CN201250263Y - Iron ore concentrate producing device by reducing baking of sulphuric acid cinder fluidized bed roaster - Google Patents
Iron ore concentrate producing device by reducing baking of sulphuric acid cinder fluidized bed roaster Download PDFInfo
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- CN201250263Y CN201250263Y CNU2008200274482U CN200820027448U CN201250263Y CN 201250263 Y CN201250263 Y CN 201250263Y CN U2008200274482 U CNU2008200274482 U CN U2008200274482U CN 200820027448 U CN200820027448 U CN 200820027448U CN 201250263 Y CN201250263 Y CN 201250263Y
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- roaster
- iron ore
- ore concentrate
- sulfate cinder
- furnace
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Abstract
The utility model relates to an iron ore concentrate producing device by reducing baking of sulphuric acid cinder fluidized bed roaster which belongs to the technical field of mechanized equipment. The iron ore concentrate producing device by reducing baking of sulphuric acid cinder fluidized bed roaster includes a fluosolid roaster and is characterized in that the outside of the body of the roaster is respectively provided with a sulphuric acid cinder feeder and a reducer feeder; a blower is arranged at the bottom of the roaster; the outside of an outlet flue at the lower part of the body of the roaster is connected with an afterheat boiler or a cooling device, a cyclonic collector and a temperature-reduction dust-collection device in sequence; a discharge opening at the lower part of the body of the roaster is connected with a water quenching pump slot; meanwhile the afterheat boiler, or the cooling device, the cyclonic collector and the temperature-reduction dust-collection device at the upper part are also connected with the inside of the water quenching pump slot by a connection pipeline; the outside of the water quenching pump slot is connected and provided with a globe mill and a magnetic extractor in sequence and is finally connected with a floatation machine. The utility model has the advantages of sufficient burning, stable operation, simple structure, high production efficiency, low maintenance cost and long service life.
Description
One, technical field
The utility model relates to a kind of sulfate cinder fluidizing furnace reducing roasting and produces the iron ore concentrate device, is specially adapted to vitriol works and utilizes sulfate cinder to produce iron ore concentrate, belongs to the mechanized equipment technical field.
Two, background technology
The main component of common sulfate cinder is Fe
2O
3, SiO
2, because of its economic worth is lower, generally does to store up and handle or give the cement mill and make cement additire etc. generally 30%～50% Deng, the total iron amount in the slag of burning with preceding.Owing to the shortage of iron ore deposit, utilized sulfate slag to produce extremely insider's the concern of iron ore concentrate technology, and be applied to industrialized production gradually in recent years.Utilize the method for sulfate slag production iron ore concentrate more, method commonly used has magnetic method, gravity separation method, flotation process etc.; The vitriol works that has is in order to increase the ferromagnetism Fe that burns in the slag
3O
4, the FeO composition, control reductibility calcination atmosphere in roasting process, but the content of sulphur does not reach the ironmaking requirement in the iron ore concentrate of being produced.
The factory that has adopts the method for shaft kiln roasting or rotary kiln baking, common sulfate cinder is carried out the reductibility roasting, with weak magnetic Fe
2O
3Change into ferromagnetism Fe
3O
4, FeO etc., the shortcoming of this method is that sulfate slag will be rolled into a ball ball, drying in advance, roasting also will be carried out fragmentation later on, grinds etc.; And the fuel consumption height, cost is higher.
Three, summary of the invention
The utility model purpose is to solve the weak point that above-mentioned prior art exists, and provides a kind of simple in structure, sufficient combustion, stable operation, production efficiency height, maintenance cost sulfate cinder fluidizing furnace reducing roasting low, long service life to produce the iron ore concentrate device.
The utility model is achieved through the following technical solutions:
The iron ore concentrate device is produced in the reducing roasting of sulfate cinder fluidizing furnace, comprise fluidizing reactor 2, special character is that the body of heater outside is respectively equipped with sulfate cinder feeding device 4 and reductive agent feeding device 3, furnace bottom is provided with furnace bottom gas blower 1, smoke outlet 21 outsides of upper of furnace body are connected with waste heat boiler or the water cooler 5 that is used to lower the temperature and gathers dust successively, cyclone 6 and cooling dust arrester installation 7, the discharge port 20 of body of heater bottom connects the shrend pump groove 14 that is used to cool, the waste heat boiler or the water cooler 5 on while top, cyclone 6 and cooling dust arrester installation 7 also are linked in the shrend pump groove 14 by connecting pipeline, the outside of shrend pump groove 14 is connected with ball mill 13 successively, secondary magnetic separation machine 12,11 are connected to flotation machine 10 at last;
Described cooling dust arrester installation 7 outsides also are connected with the induced draft fan 8 that is used for the dedusting smoke evacuation, and induced draft fan 8 inserts vent stack 9 again and externally carries out the flue dust emptying;
The roasting that above-mentioned sulfate cinder feeding device 4 also can be directly connected to vitriol works is provided with, the high temperature that utilizes vitriol works's sulfuric acid baking stove to produce burns slag to be added as raw material, its concrete syndeton is: the bottom of sulfuric acid baking stove 15 is provided with discharge port 22, top is provided with smoke outlet 23, the sulfate cinder that produces in the stove flows out by the set discharge port 22 in bottom, enter into by the road again in the sulfate cinder feeding device 4 of fluidizing reactor 2, the flue dust that the smoke outlet 23 on its top produces passes through set sulfuric acid waste heat boiler or water cooler 16 successively, the collection of lowering the temperature of 18 pairs of high-temperature smokes of sulfuric acid cyclone 17 and sulfuric acid electrostatic precipitator is linked in the sulfate cinder feeding device 4 of bottom fluidizing reactor 2 by pipeline then again.
Structural principle of the present utility model is: adopt the fluidized bed roasting technology, utilize fluidizing reactor, sulfate cinder and reductive agent are added in the fluidizing furnace according to certain proportioning, reductive agent also is a thermal source, and heat energy is provided during burning, controls suitable air quantity, carry out reducing roasting, with weak magnetic Fe
2O
3The red slag that burns changes into ferromagnetism Fe
3O
4Black burns slag; High temperature black burns slag and obtains qualified iron ore concentrate through shrend cooling, ore grinding, ore dressing etc.In actually operating, should adjust the add-on of reductive agent according to the original iron-holder of sulfate cinder, and ore grinding and ore dressing number of times.
The utility model has the advantages that: when utilizing the fluidization fluidized bed roasting, characteristics such as powder material and air contact area are big, mixing of materials even, sufficient combustion, stable operation, production efficiency height, adopt the form of boiling roaster, the iron ore concentrate steady quality that obtains, the rate of recovery of iron are improved; Fluidizing furnace is simple in structure, adaptability is strong, intensity of roasting is big, maintenance cost is low, long service life, than other type of furnace remarkable advantages is arranged.
Four, description of drawings
Fig. 1: iron ore concentrate device synoptic diagram is produced in the reducing roasting of sulfate cinder fluidizing furnace
Fig. 2: vitriol works utilizes high temperature to burn the reducing roasting of slag fluidizing furnace and produces iron ore concentrate device synoptic diagram
Reductive agent feeding device in the drawings, 1, the furnace bottom gas blower, 2, fluidizing reactor, 3,, 4, sulfate cinder feeding device, 5, waste heat boiler or water cooler, 6, cyclone, 7, the cooling dust arrester installation, 8, induced draft fan, 9, vent stack, 10, flotation machine, 11, magnetic separator, 12, magnetic separator, 13, ball mill, 14, shrend pump groove, 15, the sulfuric acid baking stove, 16, sulfuric acid waste heat boiler or water cooler, 17, sulfuric acid cyclone, 18, the sulfuric acid electrostatic precipitator, 19, acid accumulator plant.
Five, embodiment
Following with reference to accompanying drawing, provide embodiment of the present utility model, be used for formation of the present utility model is further specified.
Embodiment 1
As shown in Figure 1, the utility model is that iron ore concentrate device synoptic diagram is produced in the reducing roasting of sulfate cinder fluidizing furnace.This device is made up of furnace bottom gas blower 1, fluidizing reactor 2, reductive agent feeding device 3, sulfate cinder feeding device 4, waste heat boiler or water cooler 5, cyclone 6, cooling dust arrester installation 7, induced draft fan 8, vent stack 9, shrend pump groove 14, ball mill 13, magnetic separator 12, magnetic separator 11, flotation machine 10.
During the work of this device, sulfate cinder and reductive agent add in the fluidizing reactor 2 continuously by reductive agent feeding device 3 and sulfate cinder feeding device 4, adjust the air quantity of furnace bottom gas blower 1, make its fluidized bed roasting.The flue gas that is produced is collected flue dust through waste heat boiler or water cooler 5, cyclone 6, the dust arrester installation 7 of lowering the temperature, and flue dust directly enters shrend pump groove 14 and cools; The dedusting flue gas is by 9 emptying of induced draft fan 8 process vent stacks.The burning slag that fluidizing reactor 2 furnace bottoms produce enters directly also that shrend pump groove 14 mixes with flue dust, shrend is lowered the temperature, and pumps into ball mill 13 ore grindings then, passes through magnetic separator 12 and magnetic separator 11 secondary magnetic separation and flotation machine 10 refining and edulcorations and obtains qualified iron ore concentrate.
As shown in Figure 2, present embodiment is that vitriol works utilizes high temperature to burn slag fluidizing furnace reducing roasting production iron ore concentrate device synoptic diagram.It will burn slag from the high temperature of sulfuric acid stoving oven 15, and the high-temperature smoke of sulfuric acid waste heat boiler or water cooler 16, sulfuric acid cyclone 17, sulfuric acid electrostatic precipitator 18 directly adds in the sulfate cinder feeding device 4, carry out fluidized bed roasting then.The dedusting flue gas enters follow-up acid accumulator plant 19 concerned process steps.This device can be saved a large amount of heat energy, and reductive agent.
Above embodiment all can realize the purpose of this utility model, when utilizing the fluidization fluidized bed roasting, characteristics such as powder material and air contact area are big, mixing of materials even, sufficient combustion, stable operation, production efficiency height, adopt the form of boiling roaster, the iron ore concentrate steady quality that obtains, the rate of recovery of iron are improved.Fluidizing furnace is simple in structure, adaptability is strong, intensity of roasting is big, maintenance cost is low, long service life, than other type of furnace remarkable advantages is arranged.When especially directly using the utility model in vitriol works, tangible power savings advantages is arranged, it can make full use of the high-temperature residual heat of about 800 ℃ of sulfate cinders, reduces the consumption of reductive agent or other fuel, reduces cost, increases the benefit.
Claims (3)
1, the iron ore concentrate device is produced in the reducing roasting of sulfate cinder fluidizing furnace, comprise fluidizing reactor (2), be characterised in that the body of heater outside is respectively equipped with sulfate cinder feeding device (4) and reductive agent feeding device (3), furnace bottom is provided with furnace bottom gas blower (1), outside waste heat boiler or the water cooler (5) that is used to lower the temperature and gathers dust that be connected with successively of the smoke outlet of upper of furnace body (21), cyclone (6) and cooling dust arrester installation (7), the discharge port of body of heater bottom (20) connects the shrend pump groove (14) that is used to cool, the waste heat boiler or the water cooler (5) on while top, cyclone (6) and cooling dust arrester installation (7) also are linked in the shrend pump groove (14) by connecting pipeline, the outside of shrend pump groove (14) is connected with ball mill (13) successively, secondary magnetic separation machine (12), (11) be connected to flotation machine (10) at last.
2, produce the iron ore concentrate device according to the reducing roasting of the described sulfate cinder fluidizing furnace of claim 1, it is characterized in that the outside induced draft fan (8) that is used for the dedusting smoke evacuation that also connects of described cooling dust arrester installation (7), induced draft fan (8) inserts vent stack (9) again.
3, produce the iron ore concentrate device according to the reducing roasting of the described sulfate cinder fluidizing furnace of claim 1, it is characterized in that the roasting that described sulfate cinder feeding device (4) is directly connected to vitriol works is provided with, the bottom of sulfuric acid baking stove (15) is provided with discharge port (22), top is provided with smoke outlet (23), the sulfate cinder that produces in the stove flows out by the set discharge port (22) in bottom, be connected to by the road again in the sulfate cinder feeding device (4) of fluidizing reactor (2), the flue dust that the smoke outlet on its top (23) produces passes through set sulfuric acid waste heat boiler or water cooler (16) successively, sulfuric acid cyclone (17) and sulfuric acid electrostatic precipitator (18) are linked into by pipeline in the sulfate cinder feeding device (4) of bottom fluidizing reactor (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200274482U CN201250263Y (en) | 2008-09-04 | 2008-09-04 | Iron ore concentrate producing device by reducing baking of sulphuric acid cinder fluidized bed roaster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200274482U CN201250263Y (en) | 2008-09-04 | 2008-09-04 | Iron ore concentrate producing device by reducing baking of sulphuric acid cinder fluidized bed roaster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201250263Y true CN201250263Y (en) | 2009-06-03 |
Family
ID=40745935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200274482U Expired - Fee Related CN201250263Y (en) | 2008-09-04 | 2008-09-04 | Iron ore concentrate producing device by reducing baking of sulphuric acid cinder fluidized bed roaster |
Country Status (1)
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|---|---|
| CN (1) | CN201250263Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094122A (en) * | 2010-12-01 | 2011-06-15 | 何侠 | Roasting method for preparing metal iron and temperature-resistant metal from sulfuric acid slag |
| CN102660673A (en) * | 2012-05-23 | 2012-09-12 | 铜陵有色金属集团控股有限公司铜冠冶化分公司 | Process and device for roasting reinforced high-sulfur pyrite ore concentrate in fluidized bed roaster |
-
2008
- 2008-09-04 CN CNU2008200274482U patent/CN201250263Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094122A (en) * | 2010-12-01 | 2011-06-15 | 何侠 | Roasting method for preparing metal iron and temperature-resistant metal from sulfuric acid slag |
| CN102660673A (en) * | 2012-05-23 | 2012-09-12 | 铜陵有色金属集团控股有限公司铜冠冶化分公司 | Process and device for roasting reinforced high-sulfur pyrite ore concentrate in fluidized bed roaster |
| CN102660673B (en) * | 2012-05-23 | 2014-04-09 | 铜陵有色金属集团控股有限公司铜冠冶化分公司 | Process and device for roasting reinforced high-sulfur pyrite ore concentrate in fluidized bed roaster |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 |