CN104789756A - Gas-solid reactor for magnetizing roasting - Google Patents
Gas-solid reactor for magnetizing roasting Download PDFInfo
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- CN104789756A CN104789756A CN201510239457.2A CN201510239457A CN104789756A CN 104789756 A CN104789756 A CN 104789756A CN 201510239457 A CN201510239457 A CN 201510239457A CN 104789756 A CN104789756 A CN 104789756A
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Abstract
The invention discloses a gas-solid reactor for magnetizing roasting, which comprises a magnetizing roasting reaction chamber, wherein the magnetizing roasting reaction chamber is provided with a fume inlet, a fume outlet, a material inlet and a material outlet; and a stirring device is installed in the magnetizing roasting reaction chamber. The gas-solid reactor for magnetizing roasting can treat both powdery materials and lump materials, and thus, has the advantages of wide material particle size range and high applicability. The gas-solid reactor for magnetizing roasting can effectively control the magnetizing roasting reaction time, so that the gas and solid roll and sufficiently contact, thereby implementing thorough magnetizing roasting, effectively enhancing the magnetisability, shortening the reaction time and enhancing the availability of reducing gas.
Description
Technical field
The invention belongs to metallurgical mine technical field, particularly relate to a kind of gas solid reactor of rhombohedral iron ore magnetizing roasting.
Background technology
Along with the high speed development of Chinese national economy, increasing to the demand of ore resource, especially iron ore deposit.At present, most of China iron ore needs import, and iron ore imports price once rose, and domestic iron and steel enterprises profit space is sharply reduced, and for realizing the Sustainable development of Chinese Iron & Steel Enterprises, must develop domestic iron ore deposit.The iron ore deposit of China 97% is lean ore, rich ore is few, and along with ore extraction amount increases, weakly magnetic ore and many iron minerals ore of more difficult choosing increase day by day, the more and more lower and foreign matter content of selected iron ore grade and quantity more and more higher, beneficiation cost also raises gradually.The efficient equipment of exploitation, reduces beneficiation cost, to promoting that the exploitation of domestic poor iron ore are significant.
Develop poor iron ore, core carries iron to fall assorted, and the technique of the poor iron ore of process has magnetizing roasting-magnetic separation process, biological process, acidleach, gravity treatment, flotation, reverse flotation etc. at present.In magnetizing roasting-magnetic separation process, core is magnetizing roasting reactor.At present, the magnetizing roasting reactor be applied in magnetizing roasting-magnetic separation process has: rotary kiln or shaft furnace, suspending magnetization roasting furnace, flash magnetization roasting stove, fluidizing furnace, fluidized-bed etc.Rotary kiln or shaft furnace have and are applicable to process lumpy material, have thermo-efficiency and utilize advantages of higher, and process granularity is the lumpy material of 15 ~ 75mm, exist and are not suitable for the shortcomings such as process pulverulent material, production cycle be long.Suspending magnetization roasting furnace, flash magnetization roasting stove, fluidizing furnace, fluidized-bed, its principle determines magnetizing roasting only can take gas-based reduction, advantages such as there is the dynamic conditions of strengthening magnetizing roasting reaction, shorten the magnetizing roasting time, enhance productivity, process granularity is little and narrow (the process granularity as fluidizing furnace is 1 ~ 3mm), exist reductive agent utilization ratio low, be not suitable for the shortcomings such as process lumpy material.Therefore, how to develop a kind ofly can process lumpy material, the magnetizing roasting reactor that can process again pulverulent material is necessary, to promoting that the development of magnetizing roasting-magnetic separation process is significant.
Summary of the invention
Object of the present invention is exactly the problem for above-mentioned prior art, provides a kind of gas solid reactor for magnetizing roasting, can process lumpy material, can process pulverulent material again, thus solves above-mentioned prior art Problems existing completely.
Object of the present invention is realized by following technical proposals:
For a gas solid reactor for magnetizing roasting, comprise magnetizing roasting reaction chamber, magnetizing roasting reaction chamber is provided with gas approach, exhanst gas outlet, material inlet and material outlet, it is characterized in that: in described magnetizing roasting reaction chamber, whipping appts is installed.
Further, described magnetizing roasting reaction chamber is piled up by refractory brick and is formed, and is coated with lagging casing at magnetizing roasting reaction chamber.
Further, described material inlet and exhanst gas outlet are arranged at magnetizing roasting reactor top, and material outlet and gas approach are arranged at bottom magnetizing roasting reaction chamber.
Further, the position level near bottom in described magnetizing roasting reaction chamber installs air distribution plate, and air distribution plate is offered the discharge port corresponding with material outlet.
Further, described whipping appts comprises drive-motor, rotating shaft and mixing component, and drive-motor is fixed on magnetizing roasting reactor top, and one end of rotating shaft is connected with drive-motor output shaft, and the other end vertically stretches in magnetizing roasting reaction chamber and is connected with mixing component.
Further, offer the air flue be interconnected in described rotating shaft and mixing component, arrange in magnetizing roasting reactor top the inlet pipe be communicated with air flue in rotating shaft, mixing component bottom is provided with air outlet.
Further, pedestal is set firmly in magnetizing roasting reactor top, drive-motor is arranged on pedestal, the coupling end place of rotating shaft and drive-motor output shaft offers inlet mouth, and is socketed trachea outward in roller end, trachea top and pedestal affixed, bottom end closure, rotating shaft is through this blind end, and between trachea inwall and rotating shaft outer wall, form closed air chamber, inlet pipe is connected with trachea and is communicated with air chamber.
Further, described mixing component comprises cruciform anchor and teeter column, and rotating shaft is connected with anchor crown center, and anchor bottom vertical is connected with some teeter columns, is provided with some air outlets in teeter column bottom.
Further, described material outlet place is provided with pneumavalve.
Owing to including a whipping appts in gas solid reactor provided by the invention, lumpy material or powder are under agitation, even rolling, overcome and use fixed bed mass transfer, heat transfer property poor, gas-solid reaction condition is wayward, temperature field is uneven, easily cause cold center, local or overheated shortcoming, make gas-solid contact more even simultaneously, promote the carrying out of gas-solid reaction, make magnetizing roasting more thorough, roasting product quality is higher.Particularly, have good suitability to the material of granularity-20mm, adopt reactor provided by the invention, solid materials can well mix, effectively avoid material overstand or too short in reactor, the phenomenon that magnetizing roasting is thorough, magnetizing roasting is uneven.
Compared with prior art, beneficial effect of the present invention is:
1. can process pulverulent material, also can process lumpy material, material handling size range is wide, and suitability is strong.
2. effectively can control the time of magnetizing roasting reaction, gas-solid rolling fully contact, magnetizing roasting is thorough, effectively improves susceptibility, Reaction time shorten, improves the effective rate of utilization of reducing gas simultaneously.
3., in gas solid reactor, mechanical stirring and gas stir material jointly, according to processing parameter, regulate stirring velocity and reducing gas flow, the dynamic conditions of strengthening reducing gas and rhombohedral iron ore reaction, is applicable to the rhombohedral iron ore of various granularity, and operation is reliable, simple.
Accompanying drawing explanation
Fig. 1 is the front view of the embodiment of the present invention one;
Fig. 2 is the A-A cross-sectional view in Fig. 1;
Fig. 3 is the front view of the embodiment of the present invention two;
Fig. 4 is the B-B cross-sectional view in Fig. 3;
Fig. 5 is the partial enlarged drawing at C place in Fig. 3.
Embodiment
Below in conjunction with specific embodiments and the drawings, the present invention is further illustrated.
Embodiment one
As depicted in figs. 1 and 2, a kind of gas solid reactor for magnetizing roasting, comprise magnetizing roasting reaction chamber 1, magnetizing roasting reaction chamber 1 is provided with gas approach 2, exhanst gas outlet 3, material inlet 4 and material outlet 5, in described magnetizing roasting reaction chamber 1, whipping appts is installed.
Described magnetizing roasting reaction chamber 1 is piled up by refractory brick 1-1 and is formed, and is coated with lagging casing 1-2 at magnetizing roasting reaction chamber 1.What lagging casing 1-2 adopted in the present embodiment is Steel Sheel.
Described material inlet 4 and exhanst gas outlet 3 are arranged at magnetizing roasting reaction chamber 1 top, and arrange material outlet 5 in the middle of bottom magnetizing roasting reaction chamber 1, this material outlet 5 is connected to form by inverted round stage 5-1 and cylindrical drum 5-2, and cylindrical drum 5-2 is provided with pneumavalve 6.Gas approach 2 is arranged at bottom magnetizing roasting reaction chamber 1 or on inverted round stage 5-1.
Position level near bottom in described magnetizing roasting reaction chamber 1 installs air distribution plate 7, and air distribution plate 7 is offered the discharge port 8 corresponding with material outlet 5.
Described whipping appts comprises drive-motor 9, rotating shaft 10 and mixing component, drive-motor 9 is fixed on magnetizing roasting reaction chamber 1 top, one end of rotating shaft 10 is connected with drive-motor 9 output shaft, and the other end vertically stretches in magnetizing roasting reaction chamber 1 and is connected with mixing component.Described mixing component comprises cruciform anchor 11 and teeter column 12, and rotating shaft 10 is connected with anchor 11 crown center, and anchor 11 bottom vertical is connected with some teeter columns 12.
Operationally, high-temperature material (optimizing temperature than magnetizing roasting high 100 ~ 200 DEG C) enters in magnetizing roasting reaction chamber 1 from material inlet 4, and drive-motor 9 drives rotating shaft 10 to rotate, and then drives mixing component Stirring material.Reducing gas enters in magnetizing roasting reaction chamber 1 from gas approach 2, air distribution plate 7 makes gas be uniformly distributed in magnetizing roasting reaction chamber 1, reducing gas and mixing component stir material jointly, the dynamic conditions of strengthening magnetizing roasting reaction, and gas-solid is fully contacted, promoting reacts completely carries out and Reaction time shorten.Control material in the residence time of reaction chamber, after reaction terminates, gas is discharged from exhanst gas outlet 3, and roasting material enters inverted round stage 5-1, through material outlet 5 discharging, obtains roasting product.
Instant invention overcomes short, the magnetizing roasting reaction of the residence time in fluidization magnetizing roasting insufficient, reducing gas amount consumes the shortcomings such as high, disposable utilization ratio is low.Compared with existing flash magnetization roasting, suspending magnetization roasting reactor, this gas solid reactor requires lower than suspending magnetization roasting to mineral granularity, and the scope of application is wider.
Gas solid reactor of the present invention according to the character of ore, can regulate calcination atmosphere, gas flow, stirring velocity, control pneumavalve, is applicable to the various weak-magnetic iron ore of magnetizing roasting.The exploitation of this equipment facilitates applying of magnetizing roasting-domestic poor iron ore of magnetic separation process process greatly.
Embodiment two
As shown in Figures 3 to 5, the difference of the present embodiment and embodiment one is, the air flue 13 be interconnected is offered in described rotating shaft 10 and mixing component, arrange the inlet pipe 14 be communicated with air flue 13 in rotating shaft 10 at magnetizing roasting reaction chamber 1 top, teeter column 12 bottom in mixing component is provided with some micropores as air outlet 15.
Concretely, pedestal 16 is set firmly at magnetizing roasting reaction chamber 1 top, drive-motor 9 is arranged on pedestal 16, rotating shaft 10 offers inlet mouth with the coupling end place of drive-motor 9 output shaft, and is socketed trachea 17 outside rotating shaft 10 end, trachea 17 top and pedestal 16 affixed, bottom end closure, rotating shaft 10 is through this blind end, and between trachea 17 inwall and rotating shaft 10 outer wall, form closed air chamber, inlet pipe 14 is connected with trachea 17 and is communicated with air chamber.
Operationally, reducing gas enters in magnetizing roasting reaction chamber 1 from two-way, and a road enters from the gas approach 2 bottom magnetizing roasting reaction chamber 1; Another road enters air chamber from inlet pipe 14, the air flue 13 then in rotating shaft 10 and mixing component, enters in magnetizing roasting reaction chamber 1 from the air outlet 15 of teeter column 12 bottom.
Therefore, can strengthen the stirring action of reducing gas to material further, make gas-solid roll contact more fully, magnetizing roasting is more thorough, improves susceptibility further, Reaction time shorten, improves the effective rate of utilization of reducing gas simultaneously.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. for a gas solid reactor for magnetizing roasting, comprise magnetizing roasting reaction chamber, magnetizing roasting reaction chamber is provided with gas approach, exhanst gas outlet, material inlet and material outlet, it is characterized in that: in described magnetizing roasting reaction chamber, whipping appts is installed.
2. the gas solid reactor for magnetizing roasting according to claim 1, is characterized in that: described magnetizing roasting reaction chamber is piled up by refractory brick and formed, and is coated with lagging casing at magnetizing roasting reaction chamber.
3. the gas solid reactor for magnetizing roasting according to claim 1, it is characterized in that: described material inlet and exhanst gas outlet are arranged at magnetizing roasting reactor top, material outlet and gas approach are arranged at bottom magnetizing roasting reaction chamber.
4. the gas solid reactor for magnetizing roasting according to claim 3, is characterized in that: the position level near bottom in described magnetizing roasting reaction chamber installs air distribution plate, and air distribution plate is offered the discharge port corresponding with material outlet.
5. the gas solid reactor for magnetizing roasting according to any one of claim 1-4, it is characterized in that: described whipping appts comprises drive-motor, rotating shaft and mixing component, drive-motor is fixed on magnetizing roasting reactor top, one end of rotating shaft is connected with drive-motor output shaft, and the other end vertically stretches in magnetizing roasting reaction chamber and is connected with mixing component.
6. the gas solid reactor for magnetizing roasting according to claim 5, it is characterized in that: in described rotating shaft and mixing component, offer the air flue be interconnected, arrange in magnetizing roasting reactor top the inlet pipe be communicated with air flue in rotating shaft, mixing component bottom is provided with air outlet.
7. the gas solid reactor for magnetizing roasting according to claim 6, it is characterized in that: set firmly pedestal in magnetizing roasting reactor top, drive-motor is arranged on pedestal, the coupling end place of rotating shaft and drive-motor output shaft offers inlet mouth, and is socketed trachea outward in roller end, trachea top and pedestal affixed, bottom end closure, rotating shaft is through this blind end, and between trachea inwall and rotating shaft outer wall, form closed air chamber, inlet pipe is connected with trachea and is communicated with air chamber.
8. the gas solid reactor for magnetizing roasting according to claim 6 or 7, it is characterized in that: described mixing component comprises cruciform anchor and teeter column, rotating shaft is connected with anchor crown center, anchor bottom vertical is connected with some teeter columns, is provided with some air outlets in teeter column bottom.
9. the gas solid reactor for magnetizing roasting according to claim 8, is characterized in that: described material outlet place is provided with pneumavalve.
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| CN201510239457.2A CN104789756A (en) | 2015-05-12 | 2015-05-12 | Gas-solid reactor for magnetizing roasting |
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| CN201510239457.2A CN104789756A (en) | 2015-05-12 | 2015-05-12 | Gas-solid reactor for magnetizing roasting |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3297429A (en) * | 1963-10-28 | 1967-01-10 | Allis Chalmers Mfg Co | Controlled atomsphere magetic roasting of iron ore |
| JP2007322110A (en) * | 2006-06-05 | 2007-12-13 | Toyota Motor Corp | Stirring mechanism for treating object in cylindrical container, and sand roasting furnace |
| CN102329948A (en) * | 2011-09-30 | 2012-01-25 | 中国科学院过程工程研究所 | Refractory poor iron ore pulsating fluidized bed magnetizing roasting device and roasting method |
| CN102534191A (en) * | 2012-01-20 | 2012-07-04 | 彭武星 | Two-section calcining device for extracting vanadium pentoxide |
| CN104562061A (en) * | 2015-01-21 | 2015-04-29 | 中冶南方工程技术有限公司 | Roasting furnace |
| CN204589267U (en) * | 2015-05-12 | 2015-08-26 | 成都利君实业股份有限公司 | A kind of gas solid reactor for magnetizing roasting |
-
2015
- 2015-05-12 CN CN201510239457.2A patent/CN104789756A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3297429A (en) * | 1963-10-28 | 1967-01-10 | Allis Chalmers Mfg Co | Controlled atomsphere magetic roasting of iron ore |
| JP2007322110A (en) * | 2006-06-05 | 2007-12-13 | Toyota Motor Corp | Stirring mechanism for treating object in cylindrical container, and sand roasting furnace |
| CN102329948A (en) * | 2011-09-30 | 2012-01-25 | 中国科学院过程工程研究所 | Refractory poor iron ore pulsating fluidized bed magnetizing roasting device and roasting method |
| CN102534191A (en) * | 2012-01-20 | 2012-07-04 | 彭武星 | Two-section calcining device for extracting vanadium pentoxide |
| CN104562061A (en) * | 2015-01-21 | 2015-04-29 | 中冶南方工程技术有限公司 | Roasting furnace |
| CN204589267U (en) * | 2015-05-12 | 2015-08-26 | 成都利君实业股份有限公司 | A kind of gas solid reactor for magnetizing roasting |
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Application publication date: 20150722 |