CN114111354B - Dry cooling device for zinc-extracting rotary kiln iron slag and working method thereof - Google Patents
Dry cooling device for zinc-extracting rotary kiln iron slag and working method thereof Download PDFInfo
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- CN114111354B CN114111354B CN202111296662.4A CN202111296662A CN114111354B CN 114111354 B CN114111354 B CN 114111354B CN 202111296662 A CN202111296662 A CN 202111296662A CN 114111354 B CN114111354 B CN 114111354B
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- flue gas
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- gas pipeline
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 224
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 112
- 239000002893 slag Substances 0.000 title claims abstract description 68
- 238000001816 cooling Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 22
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 56
- 239000003546 flue gas Substances 0.000 claims abstract description 56
- 238000001035 drying Methods 0.000 claims abstract description 37
- 239000000428 dust Substances 0.000 claims abstract description 22
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 16
- 230000023556 desulfurization Effects 0.000 claims abstract description 16
- 230000009467 reduction Effects 0.000 claims abstract description 16
- 238000007599 discharging Methods 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 26
- 238000012216 screening Methods 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 238000007790 scraping Methods 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 9
- 239000011701 zinc Substances 0.000 description 9
- 229910052725 zinc Inorganic materials 0.000 description 9
- 238000010791 quenching Methods 0.000 description 6
- 230000000171 quenching effect Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
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- 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
- F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
- F27D15/02—Cooling
- F27D15/0206—Cooling with means to convey the charge
- F27D15/0213—Cooling with means to convey the charge comprising a cooling grate
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling slag
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
- F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/04—Agitating, stirring, or scraping devices
-
- 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
- F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
- F27D15/02—Cooling
- F27D15/0206—Cooling with means to convey the charge
- F27D15/028—Cooling with means to convey the charge comprising a rotary drum
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/08—Treatment of slags originating from iron or steel processes with energy recovery
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Engineering & Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Metallurgy (AREA)
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- Manufacturing & Machinery (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a dry cooling device for zinc-extracting rotary kiln iron slag and a working method thereof, comprising a grate cooler and a rotary kiln drying furnace, wherein a box body is fixedly connected to the grate cooler, a feed bin and a reduction rotary kiln are respectively arranged on two sides of the top of the box body, a first flue gas pipeline and a second flue gas pipeline are respectively communicated to the box body and the rotary kiln drying furnace, the first flue gas pipeline and the second flue gas pipeline are connected to a dust removal desulfurization system through induced fans, the box body is arranged on the grate cooler, the feed bin and the reduction rotary kiln are respectively arranged on two sides of the top of the box body, and the grate cooler is provided with working surfaces for placing iron ore blocks and a high-temperature wear-resisting layer of Wen Tiezha.
Description
Technical Field
The invention belongs to the field of waste treatment and utilization in the metallurgical industry, and particularly relates to a dry cooling device for zinc extracting rotary kiln iron slag and a working method thereof.
Background
Iron slag is a main solid waste produced by iron and steel enterprises, a high Wen Tiezha is produced in the process of treating dust-removing ash, fuming and recycling zinc by a rotary kiln, the slag temperature is 900-1300 ℃, the heat of each ton of iron slag is about 50kg of heat of standard coal which is completely combusted, the cooling mode of the iron slag is generally mainly carried out by water quenching, a large amount of water mist is produced during water quenching, the field environment is extremely influenced, meanwhile, the energy is extremely wasted, and the water resource is lost, and the iron slag reduced by the rotary kiln is further oxidized by water due to the influence of the water quenching of the iron slag, so that the metallization rate of iron in the iron slag is reduced; on the other hand, the water content of the iron ore agglomerate used in blast furnace ironmaking is sometimes more than 14%, and the iron ore agglomerate can be used only by drying.
Disclosure of Invention
The invention aims to provide a dry cooling device for iron slag of a zinc extracting rotary kiln and a working method thereof, which solve the problem of great waste of energy sources in the prior art.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides a carry dry method cooling device of zinc rotary kiln iron slag, includes comb cold machine, rotary kiln dry-off oven and hot-blast furnace, fixedly connected with box on the comb cold machine, and box top both sides are installed feed bin and reduction rotary kiln respectively, communicate respectively on box and the rotary kiln dry-off oven and have first flue gas pipeline and second flue gas pipeline, first flue gas pipeline and second flue gas pipeline pass through the draught fan and connect on dust removal desulfurization system, the box is arranged in on the comb cold machine, feed bin and reduction rotary kiln are installed respectively in the both sides at the box top, have the working face of placing iron ore lump ore and high Wen Tiezha high temperature wearing layer on the comb cold machine, the bottom of reduction rotary kiln is connected with high Wen Tiezha chute, and high Wen Tiezha chute bottom is connected with iron slag discharging device, the air intake of first flue gas pipeline and second flue gas pipeline communicates respectively on box and rotary kiln dry-off oven, and the flue gas of hot-blast furnace of first flue gas pipeline carries dust removal system through the draught fan, rotary kiln dry-off oven stove bottom intercommunication has the unloading, and the crushing system and the unloading is with the kiln heat source of unloading, and the output is controlled by the control system is the stoving state intercommunication simultaneously.
Preferably, the iron slag discharging device comprises a discharging shell arranged in the box body, a filter plate arranged at the bottom of the discharging shell, a push plate for driving iron slag, and a driving motor arranged on the discharging shell, wherein one side of the inside of the discharging shell is provided with a guide wheel, the output end of the driving motor is connected with a wire winding wheel, a steel wire is wound on the surface of the wire winding wheel, and the steel wire is connected with the push plate through the guide wheel.
Preferably, the control system includes a control processor and a temperature detector mounted on the cabinet, and a detection end of the temperature detector extends to an inside of the cabinet.
Preferably, one side of the interior of the rotary kiln drying furnace is connected with a scraping plate in a sliding manner, one side of the scraping plate is connected with a pull rod, and one end of the pull rod extends to the outer side of the box body and is connected with a handle.
Preferably, the lower part of the grate cooler is provided with a water cooling device system for cooling the grate cooler body, the grate cooler and the box body are made of temperature-resistant materials, a working surface placed on the grate cooler is made of high-temperature-resistant and wear-resistant materials, the thickness of the working surface is 8-20mm, the working surface operates in a linear mode, and the operating speed is 0.5-1.5m/s.
Preferably, the induced wind pressure is 5000-12000Pa.
Preferably, the flue gas temperature of the hot blast stove is 800-1200 ℃;
the working method of the dry cooling device for the zinc-extracting rotary kiln iron slag comprises the following steps:
firstly, blanking iron ore block ore in a storage bin onto a working surface on a grate cooler to form an iron ore block ore layer, wherein the thickness of the iron ore block ore layer is 200-500mm;
step two, the reduced high Wen Tiezha of the reduction rotary kiln falls to one side of the inside of the discharge shell through a high-temperature iron slag chute, a driving motor is started again, and drives a wire winding wheel to rotate, so that steel wires can be wound, the steel wires drive the high Wen Tiezha to uniformly pass through a filter plate, a high-temperature iron slag layer is formed on an iron ore block layer, and the thickness of the high-temperature iron slag layer is 100-300mm;
step three, conveying the iron ore block ore and high Wen Tiezha materials on the working surface to a rotary kiln drying furnace through a rotating device system of a grate cooler;
step four, the materials are fully mixed and subjected to heat exchange in a rotary kiln drying furnace, so that moisture in iron ore lump ore is dried, the temperature is reduced at the moment, a temperature detector can detect the temperature in the box body at any time, and when the fact that the heat in the rotary kiln drying furnace is insufficient is detected, a hot blast furnace can be started to work through a control processor, and the hot blast furnace supplies hot air with the temperature of 800-1200 ℃ to supply heat for the drying furnace; after the drying is finished, pulling a handle, driving a scraping plate to move by a pull rod, and discharging the mixture from a rotary kiln drying furnace together by the scraping plate to enter a crushing and screening system;
fifthly, the mixed material of the iron ore block ore and the iron slag enters a crushing and screening system and then is screened to obtain iron-containing materials for blast furnace ironmaking and sintering;
step six, flue gas generated in the box and the rotary kiln drying furnace respectively enters a dust removal desulfurization system through a first flue gas pipeline and a second flue gas pipeline under the action of a draught fan, and the dust removal desulfurization system removes dust and desulfurizes the flue gas to enable the flue gas to reach the standard and then be discharged.
The invention has the beneficial effects that:
according to the invention, the iron ore block ore layer and the high-temperature iron slag layer double-layer material layer are formed on the working surface through the blanking of the storage bin and the reduction rotary kiln, so that the high Wen Tiezha waste heat utilization thermal efficiency can be controlled to be more than 90%, and compared with the traditional water quenching treatment of the iron slag, the field environment is improved, the waste of energy sources is reduced, the water resource is saved, the metallization rate of iron in the iron slag is improved, and the added value of the iron slag is increased.
According to the invention, the high Wen Tiezha can be evenly discharged on the iron ore block layer through the cooperation among the pull rod, the handle and the scraping plate, so that a high-temperature iron slag layer is formed, the high Wen Tiezha is paved without manual participation, and the labor is saved.
The comprehensive utilization device system has the advantages of simple process, low investment and operation cost, low accident rate, high heat efficiency and the like.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a dry cooling device for zinc-extracting rotary kiln slag.
Fig. 2 is an enlarged view of a portion of fig. 1 a in accordance with the present invention.
FIG. 3 is a system schematic block diagram of a dry cooling device for zinc-extracting rotary kiln slag and a working method thereof.
Fig. 4 is a system schematic block diagram of a control system in the working method of the dry cooling device for zinc-extracting rotary kiln iron slag.
In the drawings, the list of components represented by the various numbers is as follows:
1. a grate cooler; 2. a storage bin; 3. reducing the rotary kiln; 4. a rotary kiln drying furnace; 5. a first flue gas duct; 6. a second flue gas duct; 7. an induced draft fan; 8. a dust removal and desulfurization system; 9. a crushing and screening system; 10. hot blast stove; 11. a case; 12. a working surface; 13. a high temperature slag chute; 14. a blanking chute; 15. a discharge shell; 16. a filter plate; 17. a push plate; 18. a driving motor; 19. a guide wheel; 20. a wire winding wheel; 21. a steel wire; 22. a control processor; 23. a temperature detector; 24. a scraping plate; 25. a pull rod; 26. a handle.
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.
Referring to fig. 1-4, the invention discloses a dry cooling device for zinc extracting rotary kiln iron slag and a working method thereof, which specifically comprises the following embodiments:
example 1
The utility model provides a dry method cooling device of zinc-extracting rotary kiln iron slag, including comb cooler 1, feed bin 2, reduction rotary kiln 3, rotary kiln drying furnace 4, first flue gas pipeline 5, second flue gas pipeline 6, draught fan 7, dust removal desulfurization system 8, broken screening system 9, hot-blast furnace 10 and box 11, box 11 is arranged in comb cooler 1, feed bin 2 and reduction rotary kiln 3 install the both sides at the box 11 top respectively, have the working face 12 of placing iron ore lump ore and high Wen Tiezha high temperature wearing layer on comb cooler 1, the bottom of reduction rotary kiln 3 is connected with high Wen Tiezha chute 13, and high Wen Tiezha chute 13 bottom is connected with iron slag discharging device, the air intake of first flue gas pipeline 5 and second flue gas pipeline 6 communicates respectively on box 11 and rotary kiln drying furnace 4, and the flue gas of first flue gas pipeline 5 and second flue gas pipeline 6 is carried dust removal desulfurization system 8 through draught fan 7, rotary kiln drying furnace 4 bottom intercommunication has unloading chute 14, and broken screening system 9 and unloading chute 14 intercommunication, 10 output and rotary kiln drying furnace 4 end intercommunication, for the kiln drying furnace 4 is provided by the control system 10's the operating condition simultaneously. The iron slag discharging device comprises a discharging shell 15 arranged in the box 11, a filter plate 16 arranged at the bottom of the discharging shell 15, a push plate 17 used for driving iron slag, a driving motor 18 arranged on the discharging shell 15, a guide wheel 19 arranged on one side of the inside of the discharging shell 15, a wire take-up wheel 20 connected with the output end of the driving motor 18, a steel wire 21 wound on the surface of the wire take-up wheel 20, and the steel wire 21 connected with the push plate 17 through the guide wheel 19. The control system includes a control processor 22 and a temperature detector 23 mounted on the cabinet 11, and a detection end of the temperature detector 23 extends to the inside of the cabinet 11. One side of the interior of the rotary kiln drying furnace 4 is slidably connected with a scraping plate 24, one side of the scraping plate 24 is connected with a pull rod 25, and one end of the pull rod 25 extends to the outer side of the box 11 and is connected with a handle 26. The lower part of the grate cooler 1 is provided with a water cooling device system for cooling the grate cooler 1 body, the grate cooler 1 and the box 11 are made of temperature resistant materials, a working surface 12 placed on the grate cooler 1 is made of high temperature resistant and wear resistant materials, the thickness of the working surface 12 is 8mm, the working surface 12 operates in a linear mode, and the operating speed is 0.5m/s. The induced wind pressure of the induced draft fan 7 is 5000Pa. The flue gas temperature of the hot blast stove 10 is 800 ℃;
the method for utilizing the dry cooling device of the zinc extracting rotary kiln iron slag of the embodiment comprises the following specific steps:
firstly, blanking iron ore blocks in a storage bin 2 onto a working surface 12 on a grate cooler 1 to form an iron ore block layer, wherein the thickness of the iron ore block layer is 200mm;
step two, the reduced high Wen Tiezha of the reduction rotary kiln 3 falls to one side of the interior of the discharge shell 15 through the high-temperature iron slag chute 13, the driving motor 18 is started again, the driving motor 18 drives the wire take-up pulley 20 to rotate, so that the steel wire 21 can be wound, the steel wire 21 drives the high Wen Tiezha to uniformly pass through the filter plate 16, a high-temperature iron slag layer is formed on the iron ore block ore layer, and the thickness of the high-temperature iron slag layer is 100mm;
step three, conveying the iron ore block ore and high Wen Tiezha materials on the working surface 12 to a rotary kiln drying furnace 4 through a rotating device system of the grate cooler 1;
step four, the materials are fully mixed and subjected to heat exchange in the rotary kiln drying furnace 4, so that moisture in the iron ore block is dried, the temperature is also reduced at the moment, the temperature detector 23 can detect the temperature in the box 11 at any time, and when the fact that the heat in the rotary kiln drying furnace 4 is insufficient is detected, the hot blast furnace 10 can be started to work through the control processor 22, and the hot blast furnace 10 supplies hot blast up to 800 ℃ to supply heat for the drying furnace; after the drying is finished, pulling a handle 26, wherein the handle 26 drives a scraping plate 24 to move through a pull rod 25, and the scraping plate 24 drives the mixture to be discharged from the rotary kiln drying furnace 4 together and enter a crushing and screening system 9;
fifthly, the mixed material of the iron ore block ore and the iron slag enters a crushing and screening system 9 and then is screened to obtain iron-containing materials for blast furnace iron making and sintering;
step six, flue gas generated in the box 11 and the rotary kiln drying furnace 4 respectively enter the dust removal desulfurization system 8 together through the first flue gas pipeline 5 and the second flue gas pipeline 6 under the action of the induced draft fan 7, and the dust removal desulfurization system 8 removes dust and desulfurizes the flue gas to enable the flue gas to reach the standard and then be discharged.
Example 2
In the dry cooling device for the iron slag of the zinc extracting rotary kiln, the thickness of a working surface 12 is 10mm, the running speed is 1m/s, the induced air pressure of an induced draft fan 7 is 8000Pa, and the flue gas temperature of a hot blast stove 10 is 1000 ℃; the rest is unchanged;
the thickness of the iron ore block ore layer formed in the method of the dry cooling device of the zinc extracting rotary kiln iron slag is 300mm, and the thickness of the high-temperature iron slag layer formed is 200mm; the stove 10 provides up to 1000 ℃; the rest is unchanged.
Example 3
The thickness of a working surface 12 in a dry cooling device of the zinc-extracting rotary kiln iron slag is 20mm, the running speed is 1.5m/s, the induced air pressure of an induced draft fan 7 is 12000Pa, and the flue gas temperature of a hot blast stove 10 is 1200 ℃; the rest is unchanged;
the thickness of the iron ore block ore layer formed in the method of the dry cooling device of the zinc extracting rotary kiln iron slag is 500mm, and the thickness of the high-temperature iron slag layer formed is 300mm; the stove 10 provides up to 1000 ℃; the rest is unchanged.
According to the embodiment, the thickness of the working surface 12 on the grate cooler 1 can be controlled within the range of 8-20mm, only the thickness of the working surface 12 is controlled within the range of 8-20m in the production and manufacturing process, the range of the thickness is relatively wide, the production and manufacturing are easy, and the difficulty of precisely designing the thickness of the working surface 12 by a manufacturer is reduced; the thickness of the formed iron ore block layer is controlled to be 200-500mm, the thickness of the iron ore block layer is controlled to be 100-300mm, and the iron ore block layer are required to have a wider operation space in the actual operation process, and the waste heat of high Wen Tiezha is reasonably utilized; meanwhile, the running speed of the working surface 12, the wind pressure of the induced draft fan 7 and the temperature of the hot blast stove 10 can be adjusted according to the actual use condition, so that the device of the invention is easy to popularize.
The functions of the structure used in the present invention are specifically as follows:
and a storage bin 2: the bin 2 is used for storing materials and discharging;
high temperature slag chute 13: the method is used for blanking high-temperature iron slag;
reduction rotary kiln 3: the reduction rotary kiln 3 enters the reduced height Wen Tiezha into the iron ore lump ore layer through a height Wen Tiezha chute 13;
the working surface 12 is used for bearing iron ore lump ore and height Wen Tiezha and is driven by a rotating device system of the grate cooler 1;
a rotary kiln drying furnace 4 for fully mixing the iron ore lump ore with the height Wen Tiezha so as to fully dry the water in the iron ore lump ore;
a discharging chute 14 for discharging the dried iron ore lump ore and the cooled height Wen Tiezha to the crushing and screening system 9;
the induced draft fan 7 is used for conveying the flue gas to the dust removal and desulfurization system 8;
the dust removal and desulfurization system 8 is used for removing dust and desulfurizing the flue gas and discharging the flue gas after reaching the standard;
the crushing and screening system 9 is used for crushing and screening the dried iron ore blocks and the cooled iron slag and screening out raw materials for blast furnace ironmaking;
the upper parts of the box body 11 and the grate cooler 1 adopt a sealing structure to prevent the flue gas from overflowing;
a hot blast stove 10 as an auxiliary heat source for providing a heat source for the rotary kiln drying furnace 4;
the invention is concretely applied as follows:
the iron ore lump ore is fed to the working surface 12 of the grate cooler 1 with 14% of water content, the feeding amount is 15t/h to form an iron ore lump ore layer with the thickness of 500mm, and the iron ore lump ore layer runs below an iron slag discharging device through the grate cooler 1;
feeding high-temperature iron slag to an iron ore block ore layer at 1200 ℃, wherein the feeding amount is 5t/h, a layer with the thickness of 200mm with the height of Wen Tiezha is formed, and the iron ore block ore are conveyed into a rotary kiln drying furnace 4 together at the speed of 1m/min through a grate cooler;
after the iron ore lump ore and the high-temperature iron slag run in the rotary kiln drying furnace 4 for 60min, the discharging temperature is 150 ℃, and the mixed materials are conveyed to the crushing and screening system 9 together;
the mixed material of the iron ore block ore and the iron slag enters a crushing and screening system 9, and then the granularity of the iron-containing material is screened out, wherein the granularity is 8-35mm and the granularity is 0-8mm and the iron-containing material is used for blast furnace iron making and granulating and sintering;
the flue gas generated in the box body 11 of the grate cooler 1 and the rotary kiln drying furnace 4 enters the dust removal desulfurization system 8 together through the first flue gas pipeline 5, the second flue gas pipeline 6 and the induced draft fan 7, the pressure of the induced draft fan 7 is 8000Pa, and no flue gas overflows in the whole process;
the dust removal and desulfurization system 8 removes dust and desulfurizes the flue gas so that the flue gas reaches the national standard and is discharged.
Compared with the traditional water quenching treatment of iron slag, the method provided by the invention improves the water quenching field environment, has the high Wen Tiezha waste heat utilization efficiency of more than 90%, saves water resources, improves the added value of the iron slag, and has simple process equipment and low investment and operation cost.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative and explanatory of the principles of the invention, as various modifications and additions may be made to the specific embodiments described, or similar thereto, by those skilled in the art, without departing from the principles of the invention or beyond the scope of the appended claims.
Claims (7)
1. A dry cooling device for zinc-extracting rotary kiln iron slag is characterized in that: including comb cold machine (1), rotary kiln dry-off oven (4) and hot-blast furnace (10), fixedly connected with box (11) on comb cold machine (1), and feed bin (2) and reduction rotary kiln (3) are installed respectively to box (11) top both sides, communicate respectively on box (11) and rotary kiln dry-off oven (4) has first flue gas pipeline (5) and second flue gas pipeline (6), first flue gas pipeline (5) and second flue gas pipeline (6) are connected on dust removal desulfurization system (8) through draught fan (7), be equipped with working face (12) on comb cold machine (1), the bottom of reduction rotary kiln (3) is connected with high Wen Tiezha chute (13), and high Wen Tiezha chute (13) bottom is connected with iron slag discharging device, communicate respectively on box (11) and rotary kiln dry-off oven (4) on first flue gas pipeline (5) and second flue gas pipeline (6), rotary kiln dry-off oven (4) bottom intercommunication has unloading (14), and unloading (14) are connected with hot-blast furnace (10) and are used for control heating system (10) to feed through.
2. The dry cooling device for zinc-extracting rotary kiln slag according to claim 1, wherein: the iron slag discharging device comprises a discharging shell (15), a pushing plate (17) is slidably connected inside the discharging shell (15), a driving motor (18) is fixedly arranged on one side of the top of the discharging shell (15), a filter plate (16) is arranged on the bottom wall of the discharging shell (15), a guide wheel (19) is arranged on one side of the inside of the discharging shell (15), a wire take-up wheel (20) is connected to the output end of the driving motor (18), a steel wire (21) is wound on the surface of the wire take-up wheel (20), and the steel wire (21) is connected with the pushing plate (17) through the guide wheel (19).
3. The dry cooling device for zinc-extracting rotary kiln slag according to claim 1, wherein: the control system comprises a control processor (22) and a temperature detector (23) which are arranged on the box body (11).
4. The dry cooling device for zinc-extracting rotary kiln slag according to claim 1, wherein: the rotary kiln drying furnace (4) is internally connected with a scraping plate (24) in a sliding manner, one side of the scraping plate (24) is connected with a pull rod (25), and one end of the pull rod (25) is connected with a handle (26).
5. The dry cooling device for zinc-extracting rotary kiln slag according to claim 1, wherein: the grate cooler (1) and the box body (11) are made of temperature-resistant materials, and a working surface (12) placed on the grate cooler (1) is made of high-temperature-resistant and wear-resistant materials.
6. The dry cooling device for zinc-extracting rotary kiln slag according to claim 1, wherein: the induced draft pressure of the induced draft fan (7) is 5000-12000Pa.
7. The working method of the dry cooling device for the zinc-extracting rotary kiln slag according to any one of claims 1 to 6, which is characterized by comprising the following steps:
firstly, blanking iron ore blocks in a storage bin (2) onto a working surface (12) on a grate cooler (1) to form an iron ore block layer;
step two, enabling the high Wen Tiezha reduced by the reduction rotary kiln (3) to form a high-temperature iron slag layer on the iron ore block ore layer through a high-temperature iron slag chute (13) and an iron slag discharging device;
step three, conveying the iron ore block ore and high Wen Tiezha materials on the working surface (12) to a rotary kiln drying furnace (4) through a rotating device system of a grate cooler (1);
step four, the materials are fully mixed and subjected to heat exchange in a rotary kiln drying furnace (4), and a hot blast furnace (10) is started to work according to a control system, and the hot blast furnace (10) supplies hot air to the drying furnace for supplying heat; after the drying is finished, discharging the mixture from the rotary kiln drying furnace (4) into a crushing and screening system (9);
fifthly, the mixed material of the iron ore block ore and the iron slag enters a crushing and screening system (9) and then is screened to obtain iron-containing materials for blast furnace iron making and sintering;
step six, flue gas generated in the box body (11) and the rotary kiln drying furnace (4) respectively enters the dust removal desulfurization system (8) together through the first flue gas pipeline (5) and the second flue gas pipeline (6) under the action of the induced draft fan (7), and the dust removal desulfurization system (8) removes dust and desulfurizes the flue gas to enable the flue gas to reach the standard and then be discharged.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101977866A (en) * | 2008-03-20 | 2011-02-16 | 杰富意钢铁株式会社 | Cooling treatment system and cooling treatment method of molten slag |
| CN202415574U (en) * | 2011-12-20 | 2012-09-05 | 南京凯盛开能环保能源有限公司 | Molten slag quenching and dry granulating and sensible heat recovery power generation system |
| KR20130060083A (en) * | 2011-11-29 | 2013-06-07 | 현대제철 주식회사 | Device for recovering valuable metal and producing of multi-functional aggregate using slag |
| CN103930573A (en) * | 2012-06-27 | 2014-07-16 | 新日铁住金株式会社 | Slag supply container for electric furnace for steel slag reduction |
| CN104307628A (en) * | 2014-09-19 | 2015-01-28 | 河南金利金铅有限公司 | Method for comprehensive utilization of fuming furnace slag from lead and zinc smelting |
| CN204824932U (en) * | 2015-07-15 | 2015-12-02 | 南京凯盛开能环保能源有限公司 | Power generation system is retrieved to high slag integrated treatment and sensible heat |
-
2021
- 2021-11-03 CN CN202111296662.4A patent/CN114111354B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101977866A (en) * | 2008-03-20 | 2011-02-16 | 杰富意钢铁株式会社 | Cooling treatment system and cooling treatment method of molten slag |
| KR20130060083A (en) * | 2011-11-29 | 2013-06-07 | 현대제철 주식회사 | Device for recovering valuable metal and producing of multi-functional aggregate using slag |
| CN202415574U (en) * | 2011-12-20 | 2012-09-05 | 南京凯盛开能环保能源有限公司 | Molten slag quenching and dry granulating and sensible heat recovery power generation system |
| CN103930573A (en) * | 2012-06-27 | 2014-07-16 | 新日铁住金株式会社 | Slag supply container for electric furnace for steel slag reduction |
| CN104307628A (en) * | 2014-09-19 | 2015-01-28 | 河南金利金铅有限公司 | Method for comprehensive utilization of fuming furnace slag from lead and zinc smelting |
| CN204824932U (en) * | 2015-07-15 | 2015-12-02 | 南京凯盛开能环保能源有限公司 | Power generation system is retrieved to high slag integrated treatment and sensible heat |
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