CN115468413B - Vertical continuous drying roasting device - Google Patents
Vertical continuous drying roasting device Download PDFInfo
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- CN115468413B CN115468413B CN202210988904.4A CN202210988904A CN115468413B CN 115468413 B CN115468413 B CN 115468413B CN 202210988904 A CN202210988904 A CN 202210988904A CN 115468413 B CN115468413 B CN 115468413B
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- drying
- pickling
- furnace body
- roasting furnace
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- 238000001035 drying Methods 0.000 title claims abstract description 73
- 239000000428 dust Substances 0.000 claims abstract description 71
- 239000007769 metal material Substances 0.000 claims abstract description 38
- 238000002386 leaching Methods 0.000 claims description 61
- 238000005554 pickling Methods 0.000 claims description 60
- 238000011084 recovery Methods 0.000 claims description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 239000002253 acid Substances 0.000 claims description 24
- 230000007246 mechanism Effects 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 20
- 238000001125 extrusion Methods 0.000 claims description 19
- 238000003756 stirring Methods 0.000 claims description 17
- 238000004140 cleaning Methods 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 238000005056 compaction Methods 0.000 claims description 4
- 238000005485 electric heating Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 27
- 230000009286 beneficial effect Effects 0.000 abstract description 7
- 238000000926 separation method Methods 0.000 abstract description 7
- 230000001590 oxidative effect Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 238000003723 Smelting Methods 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000005571 horizontal transmission Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/08—Shaft or like vertical or substantially vertical furnaces heated otherwise than by solid fuel mixed with charge
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/16—Arrangements of tuyeres
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/18—Arrangements of dust collectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B1/00—Shaft or like vertical or substantially vertical furnaces
- F27B1/10—Details, accessories, or equipment peculiar to furnaces of these types
- F27B1/20—Arrangements of devices for charging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to the technical field of drying and roasting equipment, and aims to solve the problems that in the prior art, materials enter a furnace body and fall down directly in a bulk form, dust in the materials is not beneficial to separation from metal materials, the quality of smelted products is reduced, continuous drying and roasting of the metal materials are difficult to realize, and the drying and roasting efficiency is low; the invention can not only continuously carry out the drying and roasting operation, but also discrete the materials by forming the oxidizing cyclone atmosphere and the parallel vortex airflow, thereby avoiding the materials from agglomerating and directly falling down and realizing the effective separation of dust and metal materials.
Description
Technical Field
The invention relates to the technical field of drying and roasting equipment, in particular to a vertical continuous drying and roasting device.
Background
Roasting is a process of completing a certain chemical reaction at a temperature lower than the melting temperature of materials, and is a component part for preparing furnace charges, most of the materials always exist in a solid state, so that the roasting temperature ensures that the materials are not obviously melted as an upper limit, the roasting reaction mainly comprises solid-gas reaction and sometimes has solid-solid, solid-liquid and gas-liquid interaction or action, and most of roasting is prepared in a smelting process or a leaching process in the next step;
When the existing roasting device is used for roasting, most of the materials are directly conveyed into a roasting furnace body, the materials are in a bulk shape and directly fall down after entering the furnace body, dust in the materials is not beneficial to separation of the metal materials, the difficulty of a subsequent smelting process of the metal materials is increased, the quality of a smelted product is reduced, and after roasting of a batch of metal materials is completed, the roasted materials are taken out and added into the materials to be roasted again, so that continuous drying roasting of the metal materials is difficult to realize;
In view of the above technical drawbacks, a solution is now proposed.
Disclosure of Invention
The invention aims to provide a vertical continuous drying and roasting device, which solves the problems that in the prior art, materials enter a furnace body, are in a bulk shape and directly fall down, are not beneficial to separating dust in the materials from metal materials, increase the difficulty of a subsequent smelting process of the metal materials, reduce the quality of smelted products, and are difficult to realize continuous drying and roasting of the metal materials, the drying and roasting efficiency is low, and the labor cost and the processing cost are increased.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The vertical continuous drying and roasting device comprises a drying and roasting furnace body, wherein the top end and the bottom end of the drying and roasting furnace body are bucket-shaped, burners extending into the inside of the drying and roasting furnace body are arranged on two sides of the middle of the drying and roasting furnace body, an oxidized dust collecting pipe is arranged at the top end of the drying and roasting furnace body, a discharge hole for outputting large particles and metal materials is formed at the bottom end of the drying and roasting furnace body, and an electric heating ring pipe is fixedly arranged in the discharge hole;
a spiral feeder is arranged on one side of the drying and roasting furnace body, one end of the spiral feeder extends into the drying and roasting furnace body and is positioned above the burner, a circle of rotational flow air pipe is obliquely arranged at the position, close to the top end, of the drying and roasting furnace body, one end of the rotational flow air pipe extends into the drying and roasting furnace body and is connected with a blast cap, and the rotational flow air pipe is positioned above the spiral feeder;
a blast pipe is arranged at one end of the drying and roasting furnace body close to the bottom end, a bucket cavity and an annular cavity are arranged in the drying and roasting furnace body, the annular cavity is positioned above the bucket cavity and communicated with the bucket cavity, and the annular cavity is positioned below the burner, one end of the blast pipe is communicated with the bucket cavity, and the bucket cavity and the annular cavity are uniformly provided with air caps in the direction facing the inside of the drying and roasting furnace body.
Further, a grate is arranged below the drying roasting furnace body, the input side of the grate is positioned right below the discharge hole, a metal material bin is arranged below the output side of the grate, and the grate is inclined downwards towards the direction of the metal material bin.
Further, one end of the oxidized dust collection pipe far away from the drying roasting furnace body extends outwards and is connected with a dust heat recovery mechanism, one side of the dust heat recovery mechanism far away from the oxidized dust collection pipe is provided with a conveying pipe, and the other end of the conveying pipe is connected with an acid pickling leaching assembly.
Further, the dust heat recovery mechanism comprises a heat recovery box, a temperature sensor is fixedly arranged on the inner wall of the heat recovery box, a water inlet pipe and a water outlet pipe are arranged on the heat recovery box, a flow rate sensor is arranged on the water inlet pipe, and electric regulating valves are arranged on the water inlet pipe and the water outlet pipe;
A serpentine heat-conducting pipe immersed in water is fixedly arranged in the heat recovery box, one end of the serpentine heat-conducting pipe is communicated with the oxidized dust collection pipe, and the other end of the serpentine heat-conducting pipe is communicated with the conveying pipe; the outer wall of the heat recovery box is fixedly provided with a control panel, a processor is arranged in the control panel, the temperature sensor and the flow rate sensor are both in communication connection with the processor, and the processor is in control connection with the electric regulating valve.
Further, the pickling and leaching assembly comprises a pickling and leaching tank, one end of the conveying pipe, far away from the dust heat recovery mechanism, is communicated with the pickling and leaching tank, the communicating part of the conveying pipe and the pickling and leaching tank is positioned above the liquid level, an acid liquid input pipe and a liquid outlet pipe are fixedly arranged on the side wall, close to the bottom, of the pickling and leaching tank, an exhaust pipe with an electromagnetic valve is fixedly arranged at the top of the pickling and leaching tank, a tubular filter is arranged in the pickling and leaching tank, filtering holes are uniformly formed in the peripheral surface of the tubular filter, and the exhaust pipe extends downwards into the tubular filter and is communicated with the inside of the tubular filter, and the tubular filter is rotationally connected with the exhaust pipe;
Install the clear stifled pipe of jet-propelled that extends into its inside on the pickling leaching tank, and the clear stifled pipe of jet-propelled is located the one end and the exhaust pipe intercommunication of pickling leaching tank, install the solenoid valve on the clear stifled pipe of jet-propelled, the fixed vertical axle that sets up in bottom of tubular filter, the outer wall of pickling leaching tank passes through the motor cabinet and sets up the rotating electrical machines fixedly, horizontal transmission shaft is installed to the output of rotating electrical machines, the one end that the rotating electrical machines was kept away from to horizontal transmission shaft extends into the pickling leaching tank and is connected with vertical axle meshing transmission through bevel gear group.
Further, the vertical shaft extends downwards into the acid liquor, a transverse stirring rod is arranged on the part of the vertical shaft located in the acid liquor, and stirring protrusions are uniformly arranged on the outer circumferential surface of the transverse stirring rod.
Further, a pressing anti-blocking mechanism is arranged in the pickling leaching tank and comprises a strip-shaped extrusion block and a cleaning brush arranged on one side of the strip-shaped extrusion block, bristles of the cleaning brush are in contact with the outer peripheral surface of the cylindrical filter, an upper fixing rod and a lower fixing rod are fixedly arranged on the inner wall of the pickling leaching tank, a movable rod is fixedly arranged on one side, facing away from the cleaning brush, of the strip-shaped extrusion block, a guide sleeve is arranged on the outer peripheral surface of the fixing rod, and the other end of the movable rod penetrates through the corresponding guide sleeve; the dead lever is towards the fixed connecting block that sets up of one end of bar extrusion piece, and fixed extrusion spring that sets up between connecting block and the bar extrusion piece.
Compared with the prior art, the invention has the beneficial effects that:
1. in the invention, the cyclone air pipe and the blast pipe supply air to the inside of the drying roasting furnace body, the spiral feeder feeds the material to the inside of the drying roasting furnace body, the oxidized dust is conveyed out by the oxidized dust collecting pipe, the granular and high-specific gravity metal material falls from the central area in the furnace in a free falling manner, and the grate machine conveys the fallen metal material into the metal material bin, thereby being beneficial to the continuous operation of the drying roasting operation of the metal material, reducing the labor cost and improving the operation efficiency;
2. According to the invention, the separation of different particles of the material is realized by adjusting the cyclone flow and the blast pipe flow, the material dispersion is facilitated by forming an oxidizing cyclone atmosphere and a parallel vortex air flow, the material is prevented from agglomerating and directly falling down, the effect of separating dust from metal materials is achieved while the drying and oxidization of the material are realized by oxidizing roasting, and the product quality after the subsequent metal smelting is ensured;
3. According to the invention, the snakelike heat conduction pipe in the dust heat recovery mechanism is used for conveying the oxidized dust gas and conducting heat in the snakelike heat conduction pipe to the aqueous solution in the heat recovery box in the conveying process, so that not only can the recycling of the heat in the oxidized dust gas be realized, but also the oxidized dust gas can be cooled to be beneficial to the subsequent pickling and leaching operation, and a large amount of evaporation of acid liquor caused by higher gas temperature in the pickling and leaching operation is avoided;
4. according to the invention, the oxidation dust gas is filtered through the tubular filter in the pickling leaching assembly, the oxidation dust is blocked outside the tubular filter and falls into the acid liquor below, and the generated oxidation dust is pickled and leached while drying and roasting are performed, so that the operation steps are optimized, the operation efficiency is improved, and the outer peripheral surface of the tubular filter is brushed by the compaction anti-blocking hole mechanism, so that the dust can fall into the acid liquor below completely, and the continuous and smooth filtering operation is prevented from being influenced by the blocking of the filtering holes.
Drawings
For the convenience of those skilled in the art, the present invention will be further described with reference to the accompanying drawings;
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the structure of a drying and roasting furnace body in the invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is a schematic view (top view) showing the connection between the drying and roasting furnace body and the cyclone air pipe in the invention;
FIG. 5 is a schematic view of a dust heat recovery mechanism according to the present invention;
FIG. 6 is a schematic diagram of the structure of the pickling and leaching assembly of the present invention;
fig. 7 is an enlarged view of the hold-down anti-blowby mechanism of fig. 6.
Reference numerals: 1. drying the roasting furnace body; 2. a burner; 3. a screw feeder; 4. a chain grate; 5. a swirl air tube; 6. a metal material bin; 7. a pickling leaching assembly; 8. a dust heat recovery mechanism; 9. an oxidized dust collection pipe; 10. an electrically heated collar; 11. a bucket cavity; 12. an annular cavity; 13. an air cap; 14. a delivery tube; 15. a blast pipe; 71. pickling and leaching the tank; 72. a bevel gear set; 73. a compaction anti-blocking hole mechanism; 731. a strip-shaped extrusion block; 732. cleaning brushes; 733. a fixed rod; 734. a movable rod; 735. a guide sleeve; 736. extruding a spring; 737. a connecting block; 74. a cylindrical filter; 75. an exhaust pipe; 76. a vertical shaft; 77. a rotating electric machine; 78. a transverse transmission shaft; 79. a transverse stirring rod; 710. stirring the protrusion; 711. air injection blocking removing pipe; 712. an acid liquid input pipe; 713. a liquid outlet pipe; 81. a heat recovery tank; 82. serpentine heat conducting pipe; 83. a water inlet pipe; 84. a water outlet pipe; 85. a flow rate sensor; 86. a temperature sensor.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
as shown in fig. 1-4, the vertical continuous drying and roasting device provided by the invention comprises a drying and roasting furnace body 1, wherein the top end and the bottom end of the drying and roasting furnace body 1 are both bucket-shaped, two sides of the middle part of the drying and roasting furnace body 1 are provided with burners 2 extending into the drying and roasting furnace body 1, the burners 2 are used for improving the temperature in the drying and roasting furnace body 1 through combustion, the top end of the drying and roasting furnace body 1 is provided with an oxidized dust collecting pipe 9, the bottom end of the drying and roasting furnace body 1 is provided with a discharge hole for outputting large particles and metal materials, and an electric heating loop 10 is fixedly arranged in the discharge hole;
A grate 4 is arranged below the drying and roasting furnace body 1, the input side of the grate 4 is positioned right below the discharge hole, a metal material bin 6 is arranged below the output side of the grate 4, and the grate 4 is inclined downwards towards the direction of the metal material bin 6; in the working process, granular and high-specific-gravity metal materials fall onto the lower chain grate 4, and large-granular and high-specific-gravity metal materials are conveyed into the metal material bin 6 by the chain grate 4, so that continuous drying and roasting operations of the metal materials are facilitated;
A spiral feeder 3 is arranged on one side of the drying and roasting furnace body 1, one end of the spiral feeder 3 extends into the drying and roasting furnace body 1 and is positioned above the burner 2, a circle of rotational flow air pipes 5 are obliquely arranged at the position, close to the top end, of the drying and roasting furnace body 1, one end of each rotational flow air pipe 5 extends into the drying and roasting furnace body 1 and is connected with a blast cap, and each rotational flow air pipe 5 is positioned above the spiral feeder 3; preferably, the angle of the swirl air tube 5 is adjustable;
The one end that is close to the bottom of dry roasting furnace body 1 installs blast pipe 15, bucket die cavity 11 and annular chamber 12 have been seted up in the dry roasting furnace body 1, annular chamber 12 is located bucket die cavity 11 top and communicates with each other with it, and annular chamber 12 is located the below of combustor 2, blast pipe 15's one end communicates with each other with bucket die cavity 11, blast pipe 15 is towards the downthehole gas of blowing in bucket die cavity 11, the gas evenly gets into bucket die cavity 11 and annular chamber 12, and bucket die cavity 11 and annular chamber 12 face the inside direction of dry roasting furnace body 1 and evenly install gas cap 13, gas cap 13 spouts the gas into dry roasting furnace body 1 in, help dust and metal material's separation.
Embodiment two:
As shown in fig. 1 and 5, the difference between this embodiment and embodiment 1 is that the oxidized dust collecting pipe 9 extends outwardly away from one end of the drying and roasting furnace body 1 and is connected to the dust heat recovery mechanism 8, the dust heat recovery mechanism 8 includes a heat recovery box 81, a serpentine heat conducting pipe 82 immersed in water is fixedly provided in the heat recovery box 81, and one end of the serpentine heat conducting pipe 82 is communicated with the oxidized dust collecting pipe 9, and the other end of the serpentine heat conducting pipe 82 is communicated with the conveying pipe 14;
The oxidized dust collecting pipe 9 conveys oxidized dust gas into the serpentine heat conducting pipe 82, the serpentine heat conducting pipe 82 conveys the oxidized dust gas and conducts heat in the oxidized dust gas into aqueous solution in the heat recovery box 81 in the conveying process, so that the heat in the oxidized dust gas can be recycled, and the oxidized dust gas can be cooled to be beneficial to subsequent pickling and leaching operation, and a large amount of acid liquor evaporation caused by higher gas temperature in the pickling and leaching operation is avoided;
The dust heat recovery mechanism 8 is provided with a conveying pipe 14 at one side far away from the oxidized dust collecting pipe 9, cooled oxidized dust gas enters the conveying pipe 14, the conveying pipe 14 conveys the oxidized dust gas out, the heat recovery box 81 is provided with a water inlet pipe 83 and a water outlet pipe 84, the water inlet pipe 83 is positioned at the bottom of the heat recovery box 81 and conveys aqueous solution to the inside of the heat recovery box, the water outlet pipe 84 is positioned at the top of the heat recovery box 81 and conveys aqueous solution in the heat recovery box out, the inner wall of the heat recovery box 81 is fixedly provided with a temperature sensor 86, the temperature sensor 86 detects the water temperature in the heat recovery box 81, the water inlet pipe 83 is provided with a flow rate sensor 85, and the flow rate sensor 85 detects the water inlet speed of the water inlet pipe 83;
Electric control valves are installed on the water inlet pipe 83 and the water outlet pipe 84, a control panel is fixedly arranged on the outer wall of the heat recovery box 81, a processor is arranged in the control panel, the temperature sensor 86 and the flow rate sensor 85 are in communication connection with the processor, the processor is in control connection with the electric control valves, when the internal water temperature is greater than a preset temperature value, the processor enables the water inlet pipe 83 to accelerate the water inlet speed, and enables the water outlet pipe 84 to accelerate the water outlet speed, so that the heat recovery effect and the cooling effect on oxidized dust gas are guaranteed.
Embodiment III:
As shown in fig. 1 and 6, the difference between this embodiment and embodiments 1 and 2 is that the pickling and leaching device 7 is further included, the pickling and leaching device 7 includes a pickling and leaching tank 71, one end of a conveying pipe 14 away from the dust heat recovery mechanism 8 is communicated with the pickling and leaching tank 71, the conveying pipe 14 conveys the oxidized dust gas into the pickling and leaching tank 71, the communicating position of the conveying pipe 14 and the pickling and leaching tank 71 is located above the liquid surface, a tubular filter 74 is installed in the pickling and leaching tank 71, and the outer peripheral surface of the tubular filter 74 is uniformly provided with filter holes;
the cylindrical filter 74 filters the oxidized dust gas, oxidized dust is blocked outside the cylindrical filter 74 and falls into acid liquor below, the filtered gas enters the cylindrical filter 74, so that the oxidized dust in the oxidized dust gas can be directly subjected to pickling leaching operation, the oxidized dust is not required to be collected and then subjected to pickling leaching through related equipment, and the generated oxidized dust is subjected to pickling leaching while drying and roasting, so that the operation steps are optimized, and the operation efficiency is improved;
The top of the pickling leaching tank 71 is fixedly provided with an exhaust pipe 75, the exhaust pipe 75 is provided with an electromagnetic valve, the exhaust pipe 75 extends downwards into the tubular filter 74 and is communicated with the inside of the tubular filter, the tubular filter 74 is rotationally connected with the exhaust pipe 75, and the exhaust pipe 75 discharges filtered gas in the tubular filter 74, so that the continuous and smooth operation of the filtering operation of oxidized dust gas is ensured; a vertical shaft 76 is fixedly arranged at the bottom of the cylindrical filter 74, a rotary motor 77 is fixedly arranged on the outer wall of the pickling leaching tank 71 through a motor seat, and a transverse transmission shaft 78 is arranged at the output end of the rotary motor 77;
In the filtering process, the rotating motor 77 rotates the transverse transmission shaft 78, the transverse transmission shaft 78 drives the vertical shaft 76 to rotate through the bevel gear set 72, so that the cylindrical filter 74 rotates in the filtering process, dust particles attached to the outer peripheral surface of the cylindrical filter 74 are separated by centrifugal action, the pickling leaching tank 71 is provided with the air injection blocking removing pipe 711 extending into the pickling leaching tank, one end of the air injection blocking removing pipe 711 positioned in the pickling leaching tank 71 is communicated with the exhaust pipe 75, the air injection blocking removing pipe 711 is provided with an electromagnetic valve, after the related operation is finished, the electromagnetic valve on the air injection blocking removing pipe 711 is opened, the electromagnetic valve on the exhaust pipe 75 is closed, the air injection blocking removing pipe 711 continuously sprays high-pressure gas into the cylindrical filter 74 through the exhaust pipe 75, dust particles blocked in the filtering hole of the cylindrical filter 74 are separated through back blowing action, the blocking removing of the cylindrical filter 74 is realized, and the subsequent use effect of the cylindrical filter 74 is ensured;
further, the vertical shaft 76 extends downwards into the acid solution, the part of the vertical shaft 76 located in the acid solution is provided with a transverse stirring rod 79, stirring protrusions 710 are uniformly arranged on the outer circumferential surface of the transverse stirring rod 79, during the filtering process, the vertical shaft 76 drives the transverse stirring rod 79 to revolve around the stirring rods, the transverse stirring rod 79 drives each group of stirring protrusions 710 to rotate, and the acid solution at the bottom of the pickling leaching tank 71 is stirred under the action of the transverse stirring rod 79 and the stirring protrusions 710, so that oxidized dust is fully contacted with the acid solution, the pickling leaching efficiency is accelerated, and the pickling leaching effect is improved;
Preferably, the side wall of the pickling and leaching tank 71 near the bottom is fixedly provided with an acid liquid input pipe 712 and a liquid outlet pipe 713, acid liquid is added into the pickling and leaching tank 71 through the acid liquid input pipe 712, the internal acid liquid is conveyed out through the liquid outlet pipe 713 after the pickling and leaching operation is finished, the use is convenient, and electromagnetic valves are arranged on the acid liquid input pipe 712 and the liquid outlet pipe 713.
Embodiment four:
As shown in fig. 6 to 7, the difference between this embodiment and embodiment 1, embodiment 2 and embodiment 3 is that a hold-down anti-clogging mechanism 73 is provided in the pickling leaching tank 71, the hold-down anti-clogging mechanism 73 includes a bar-shaped extrusion block 731, a cleaning brush 732 is fixedly provided on one side of the bar-shaped extrusion block 731, bristles of the cleaning brush 732 are in contact with the outer circumferential surface of the cylindrical filter 74, when the oxidized dust gas is filtered, the cylindrical filter 74 and the cleaning brush 732 relatively rotate, the cleaning brush 732 brushes the outer circumferential surface of the cylindrical filter 74, so that dust particles adhered in the filtering holes of the cylindrical filter 74 can be brushed off, which is helpful for making the dust fall into the acid liquid below completely, and also for preventing the filtering holes from being clogged to affect the continuous and smooth progress of the filtering operation, and the filtering effect and the filtering efficiency are ensured;
An upper fixed rod 733 and a lower fixed rod 733 are fixedly arranged on the inner wall of the pickling leaching tank 71, a movable rod 734 is fixedly arranged on one side of the strip-shaped extrusion block 731, which is opposite to the cleaning brush 732, a guide sleeve 735 is arranged on the outer circumferential surface of the fixed rod 733, the other end of the movable rod 734 penetrates through the corresponding guide sleeve 735, and the guide sleeve 735 plays a role in guiding the movable rod 734; a connecting block 737 is fixedly arranged at one end of the fixing rod 733 facing the strip-shaped extrusion block 731, and an extrusion spring 736 is fixedly arranged between the connecting block 737 and the strip-shaped extrusion block 731; the pressing spring 736 is in a compressed state and applies a pressing force to the connection block 737, so that bristles of the cleaning brush 732 are pressed against the outer circumferential surface of the cylindrical filter 74, contributing to an improved cleaning effect of the outer circumferential surface of the cylindrical filter 74.
The working process and principle of the invention are as follows:
When the device is used, firstly, the burner 2 is started to enable the temperature in the furnace to rise to 400-650 ℃, then the cyclone air pipe 5 and the blast pipe 15 are started, the cyclone air pipe 5 and the blast pipe 15 start to supply air to the drying roasting furnace body 1, after the air flow in the furnace is stable, the screw feeder 3 starts to feed the materials into the drying roasting furnace body 1, the materials are burnt and oxidized, the oxidized dust materials are sent to the oxidized dust collection pipe 9 above by the cyclone air, the granular and specific gravity metal materials fall to the inner bottom of the drying roasting furnace body 1 from the central area in the furnace in a free falling manner, and fall to the grate 4 below through the electric heating ring pipe 10, and the large granular and metal materials are conveyed to the metal material bin 6 by the grate 4, so that the continuous drying roasting operation of the metal materials is facilitated, the labor cost is reduced, and the operation efficiency is improved;
The separation of different particles of material is realized through adjusting cyclone flow and blast pipe 15 flow, dust material is carried out through oxidation dust collecting pipe 9 after through oxidizing roasting, metal material gets into in the metal material feed bin 6, the metal material of collection can directly send into the smelting furnace and carry out reduction smelting, the hood of device inside is certain angle, multiunit hood combined action forms swirl fluid from bottom to top, help the material discrete through forming oxidizing cyclone atmosphere and parallel swirl air current, avoid the material to agglomerate and direct whereabouts, and oxidizing roasting still reaches the effect of dust and metal material separation when realizing the dry oxidation of material, product quality after the follow-up metal smelting has been guaranteed.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (1)
1. The vertical continuous drying and roasting device comprises a drying and roasting furnace body (1), wherein the top end and the bottom end of the drying and roasting furnace body (1) are bucket-shaped, and burners (2) extending into the inside of the drying and roasting furnace body are arranged on two sides of the middle of the drying and roasting furnace body (1), and the vertical continuous drying and roasting device is characterized in that an oxidized dust collecting pipe (9) is arranged at the top end of the drying and roasting furnace body (1), a discharge hole for outputting large particles and metal materials is formed in the bottom end of the drying and roasting furnace body (1), and an electric heating ring pipe (10) is fixedly arranged in the discharge hole;
a spiral feeder (3) is arranged on one side of the drying and roasting furnace body (1), one end of the spiral feeder (3) extends into the drying and roasting furnace body (1) and is positioned above the burner (2), a circle of rotational flow air pipe (5) is obliquely arranged at a position, close to the top end, of the drying and roasting furnace body (1), one end of the rotational flow air pipe (5) extends into the drying and roasting furnace body (1) and is connected with a blast cap, and the rotational flow air pipe (5) is positioned above the spiral feeder (3);
A blast pipe (15) is arranged at one end, close to the bottom end, of the drying and roasting furnace body (1), a bucket cavity (11) and an annular cavity (12) are formed in the drying and roasting furnace body (1), the annular cavity (12) is positioned above the bucket cavity (11) and is communicated with the bucket cavity, the annular cavity (12) is positioned below the burner (2), one end of the blast pipe (15) is communicated with the bucket cavity (11), and the bucket cavity (11) and the annular cavity (12) are uniformly provided with an air cap (13) facing the direction inside the drying and roasting furnace body (1);
A chain grate (4) is arranged below the drying and roasting furnace body (1), the input side of the chain grate (4) is positioned right below the discharge hole, a metal material bin (6) is arranged below the output side of the chain grate (4), and the chain grate (4) is inclined downwards towards the direction of the metal material bin (6);
One end of the oxidized dust collection pipe (9) far away from the drying and roasting furnace body (1) extends outwards and is connected with a dust heat recovery mechanism (8), one side of the dust heat recovery mechanism (8) far away from the oxidized dust collection pipe (9) is provided with a conveying pipe (14), and the other end of the conveying pipe (14) is connected with an acid pickling leaching assembly (7);
the dust heat recovery mechanism (8) comprises a heat recovery box (81), wherein a temperature sensor (86) is fixedly arranged on the inner wall of the heat recovery box (81), a water inlet pipe (83) and a water outlet pipe (84) are arranged on the heat recovery box (81), a flow rate sensor (85) is arranged on the water inlet pipe (83), and electric regulating valves are arranged on the water inlet pipe (83) and the water outlet pipe (84);
A serpentine heat-conducting pipe (82) immersed in water is fixedly arranged in the heat recovery box (81), one end of the serpentine heat-conducting pipe (82) is communicated with the oxidized dust collection pipe (9), and the other end of the serpentine heat-conducting pipe (82) is communicated with the conveying pipe (14); the outer wall of the heat recovery box (81) is fixedly provided with a control panel, a processor is arranged in the control panel, a temperature sensor (86) and a flow rate sensor (85) are both in communication connection with the processor, and the processor is in control connection with an electric regulating valve;
the pickling and leaching assembly (7) comprises a pickling and leaching tank (71), one end of a conveying pipe (14) far away from a dust heat recovery mechanism (8) is communicated with the pickling and leaching tank (71), the communicating part of the conveying pipe (14) and the pickling and leaching tank (71) is positioned above the liquid level, an acid liquid input pipe (712) and a liquid outlet pipe (713) are fixedly arranged on the side wall, close to the bottom, of the pickling and leaching tank (71), an exhaust pipe (75) with an electromagnetic valve is fixedly arranged at the top of the pickling and leaching tank (71), a cylindrical filter (74) is arranged in the pickling and leaching tank (71), filtering holes are uniformly formed in the peripheral surface of the cylindrical filter (74), the exhaust pipe (75) downwards extends into the cylindrical filter (74) and is communicated with the inside of the cylindrical filter, and the cylindrical filter (74) is rotationally connected with the exhaust pipe (75).
The pickling leaching tank (71) is provided with an air injection blocking removal pipe (711) extending into the pickling leaching tank, one end of the air injection blocking removal pipe (711) located in the pickling leaching tank (71) is communicated with an exhaust pipe (75), the air injection blocking removal pipe (711) is provided with an electromagnetic valve, the bottom of the cylindrical filter (74) is fixedly provided with a vertical shaft (76), the outer wall of the pickling leaching tank (71) is fixedly provided with a rotating motor (77) through a motor base, the output end of the rotating motor (77) is provided with a transverse transmission shaft (78), and one end of the transverse transmission shaft (78) far away from the rotating motor (77) extends into the pickling leaching tank (71) and is in meshed transmission connection with the vertical shaft (76) through a bevel gear group (72);
The vertical shaft (76) extends downwards into the acid liquor, a transverse stirring rod (79) is arranged on the part of the vertical shaft (76) positioned in the acid liquor, and stirring protrusions (710) are uniformly arranged on the outer peripheral surface of the transverse stirring rod (79);
The pickling leaching tank (71) is internally provided with a compaction anti-blocking hole mechanism (73), the compaction anti-blocking hole mechanism (73) comprises a strip-shaped extrusion block (731) and a cleaning brush (732) arranged on one side of the strip-shaped extrusion block (731), bristles of the cleaning brush (732) are in contact with the outer peripheral surface of the cylindrical filter (74), an upper fixing rod (733) and a lower fixing rod (733) are fixedly arranged on the inner wall of the pickling leaching tank (71), and a movable rod (734) is fixedly arranged on one side of the strip-shaped extrusion block (731) opposite to the cleaning brush (732);
an outer circumferential surface guide sleeve (735) of the fixed rod (733), and the other end of the movable rod (734) penetrates through the corresponding guide sleeve (735); a connecting block (737) is fixedly arranged at one end of the fixing rod (733) facing the strip-shaped extrusion block (731), and an extrusion spring (736) is fixedly arranged between the connecting block (737) and the strip-shaped extrusion block (731).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210988904.4A CN115468413B (en) | 2022-08-17 | 2022-08-17 | Vertical continuous drying roasting device |
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| CN202210988904.4A CN115468413B (en) | 2022-08-17 | 2022-08-17 | Vertical continuous drying roasting device |
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| CN115468413B true CN115468413B (en) | 2024-07-16 |
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| JPH11179124A (en) * | 1997-12-19 | 1999-07-06 | Mitsubishi Heavy Ind Ltd | Dust removing apparatus |
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| JP6565803B2 (en) * | 2016-06-24 | 2019-08-28 | 住友金属鉱山株式会社 | Nickel oxide manufacturing method, fluid roasting furnace |
| WO2018049718A1 (en) * | 2016-09-13 | 2018-03-22 | 昆明理工大学 | Environmentally-friendly high-temperature gas-solid reaction blast furnace with high efficiency and low energy consumption, and production technique therefor |
| CN108149006B (en) * | 2017-12-25 | 2019-10-08 | 东北大学 | Molybdenite concentrate self-heating eddy flow roasting technique and equipment |
| JP2019152384A (en) * | 2018-03-05 | 2019-09-12 | 住友金属鉱山株式会社 | Fluidization roasting furnace |
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| JP2008089235A (en) * | 2006-10-02 | 2008-04-17 | Kigyo Kumiai Shizuoka Kikai Seisakusho | Heating treatment device |
| CN205133692U (en) * | 2015-10-30 | 2016-04-06 | 嵩县开拓者钼业有限公司 | A fluidized bed furnace device for oxidizing roasting draws rhenium |
| CN112915715A (en) * | 2021-04-13 | 2021-06-08 | 张军 | Ultra-low emission treatment equipment for flue gas of tubular furnace |
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