CN102703704B - Method for smelting metal ores - Google Patents
Method for smelting metal ores Download PDFInfo
- Publication number
- CN102703704B CN102703704B CN 201210204953 CN201210204953A CN102703704B CN 102703704 B CN102703704 B CN 102703704B CN 201210204953 CN201210204953 CN 201210204953 CN 201210204953 A CN201210204953 A CN 201210204953A CN 102703704 B CN102703704 B CN 102703704B
- Authority
- CN
- China
- Prior art keywords
- electrode
- gas
- furnace
- carbon monoxide
- inflator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention relates to the technical field of metal ore smelting, and discloses a method for smelting metal ores. The method comprises the following steps: raw ores and carbon are smelted in a submerged arc furnace by virtue of discharge heating by an electrode of the submerged arc furnace, furnace gas exhausted by the submerged arc furnace firstly passes through a raw material preheater for preheating the ores to be charged into the furnace, and the furnace gas is cooled down at the same time; the cooled furnace gas passes through a liquid-gas separator and a dust remover, so that moistureand dust in the furnace gas are removed; the furnace gas, of which the moisture and the dust are removed, is separated; the separated CO is transmitted to a central through hole of the electrode via an electrode gas-supply device, and is supplied into the furnace materials in smelting. The method can solve the problems of low metal smelting efficiency and high energy consumption of the existing submerged arc furnace.
Description
Technical field
The present invention relates to the metallic ore technical field of smelting, especially a kind of method of metallic ore being smelted with the hot stove in ore deposit.
Background technology
At present, the smeltery is when smelting ore, and it is to adopt the hot stove in ore deposit to smelt that a kind of method is arranged.This kind method is to adopt carbon as reductive agent, for the reduction of accelerating metal to improve the efficient of smelting, the electrode of the hot stove in ore deposit that adopts adopts the self baking electrode of hollow, and the hollow channel by electrode makes the reductive agent carbon monoxide arrive directly that the molten bath participates in reaction in the cupola well.Yet in the process of smelting, the fusing of ore, the reduction of metal can produce the waste gas that contains carbonic acid gas and materials such as carbon monoxide, nitrogen in a large number; Because the restriction of cost and technology etc. factor, the useful component in these waste gas can not get good recycling in this smelting process with mine heat furnace smelting, cause the waste of the energy, and the waste gas of Pai Chuing affects to environment simultaneously.
Summary of the invention
Technical problem to be solved by this invention provides a kind of metallic ore smelting process, and it can solve the hot stove in existing ore deposit and carry out the low and big problem of energy consumption of Metal smelting efficient.
In order to address the above problem, technical scheme of the present invention is: this metallic ore smelting process, including raw material ore deposit and carbon relies on the electrode discharge of the hot stove in ore deposit to heat the smelting of carrying out in the hot stove in ore deposit, the furnace gas that the hot fire grate in described ore deposit goes out is after overcooling, dedusting, carbon monoxide is separated from furnace gas, and the central through hole by described electrode feeds in the furnace charge of smelting again.
More specifically scheme can also be: the cooling of described furnace gas be with furnace gas by the raw material in the feed preheater, when the mineral aggregate of going into the stokehold is carried out preheating furnace gas is cooled off; After being removed moisture through air water separator, the furnace gas that obtains cooling behind the raw material preheating carries out described dedusting by tornado dust collector again.
The pressure swing adsorption technique method that described gas delivery adopts concentrates purifying carbon oxide, and adsorption temp 20-55 ℃, adsorptive pressure is 0.25-1.2MPa.
The hot stove in described ore deposit includes body of heater, by the described electrode of electrode grip device clamping, described electrode grip device is fixed on the supporting seat, described supporting seat is placed on the guide rail, described guide rail is fixed on the structures; Be provided with the traction screw mandrel that drives described supporting seat between described supporting seat and the described structures, described electrode grip device includes controls bracing frame, is mounted with the rubber-bag that connects the control source of the gas in the bracing frame described controlling; Described rubber-bag contacts with the surface of electrode, and described electrode passes described through hole of controlling in the bracing frame, described piston hinge of controlling bracing frame and driving cylinder, and the cylinder body of described driving cylinder is fixed on the described supporting seat;
An electrode aerating coupling device that includes described electrode is arranged, the upper end of described electrode is connected with the conical surface of an inflator, conical surface junction at described inflator and described electrode is provided with sealing-ring, outside described inflator and described electrode junction, be surrounded by gas hood, be communicated with the carbon monoxide air induction hose on the described inflator, described gas hood bottom offers the air outlet, described gas hood is communicated with the carrier gas flexible pipe, and the carbon monoxide of separating from furnace gas is to import described electrode by described carbon monoxide air induction hose; Other gas of separating from furnace gas is imported in the described gas hood to be used for the CO (carbon monoxide converter) gas that leak described inflator and described electrode junction diluted by described carrier gas flexible pipe and is discharged after becoming the gas that can not fire.
The present invention compared with prior art has following beneficial effect:
1, because the pipeline of the carbon monoxide that reclaims by the electrode middle part directly blows to the molten bath in the body of heater, play the effect of stirring, the carbon monoxide that enters simultaneously can be participated in the reduction to metal directly, thereby has accelerated the reduction of metal, improve the speed of smelting, played the effect of economize on electricity.
2, behind the incoming stock preheater of the high-temperature furnace gas that produces the raw material ore deposit is played the effect of dehumidifying, heating, the raw material ore deposit enters in the hot stove in ore deposit under less moisture, higher temperature, reduced the energy required to its heating, also improved the speed of smelting simultaneously, thereby played energy-conservation effect.
3, furnace gas has reduced grit after udst separation, carry out gas delivery through pressure-swing absorption apparatus again, other useful composition of carbon monoxide and nitrogen etc. in the furnace gas is separated recycling, particularly with the direct defeated molten bath of melting down in the body of carbon monoxide, not only energy-conservation but also reduced pollution.
4, utilize nitrogen or other residual air separated in the furnace gas directly to feed the electrode aerator, dilute the atmosphere of electrode and air-supply duct junction effectively, can prevent personnel safety accidents such as blast that electrode and air-supply duct junction are caused because carbon monoxide leaks or poisoning.
Description of drawings
Fig. 1 is A-A cross-section structure schematic flow sheet of the present invention;
Fig. 2 is distribution of electrodes synoptic diagram among the present invention;
Fig. 3 is that electrode aerator master looks diagrammatic cross-section among the present invention;
Fig. 4 is electrode aerator schematic top plan view among the present invention;
Fig. 5 is that electrode grip device master looks diagrammatic cross-section among the present invention;
Fig. 6 is electrode grip device schematic top plan view among the present invention.
Embodiment
The present invention is further described below in conjunction with drawings and Examples:
In Fig. 1, the smelting that has raw material ore deposit and carbon in the hot stove in ore deposit, to rely on the electrode 2 discharge heating of the hot stove in ore deposit to carry out in the body of heater 1, the mineral aggregate that the furnace gas that the hot fire grate in described ore deposit goes out is gone into the stokehold through venting port 16 14 pairs of incoming stock preheaters carries out preheating, makes furnace gas obtain cooling simultaneously; Carry out dedusting by tornado dust collector 18 again after cooled furnace gas removed moisture by air water separator 19.The furnace gas of removing moisture and dust is carried out gas delivery at pressure-swing absorption apparatus 17, the pressure swing adsorption technique method that gas delivery adopts concentrates purifying carbon oxide, adsorption temp 20-55 ℃, adsorptive pressure is 0.25-1.2MPa, concrete separating process is that 200810044763.0 patented method is carried out according to China Patent No., with the carbon monoxide of separating, be transported to three electrode aerators 9 respectively by CO (carbon monoxide converter) gas divider 20, CO (carbon monoxide converter) gas is transported to the central through hole of three electrodes 2, feeds in the furnace charge of smelting; Other residual air of separating is transported to three electrode aerator 9 places respectively by residual air divider 21, is used for the carbon monoxide that this place of dilution might leak.
The hot stove in ore deposit among Fig. 1 and Fig. 2 includes body of heater 1, electrode 2, bell 3, cupola well 4, Conducting copper tile 6 and short net 7; Three electrodes 2 are connected with three-phase alternating-current supply 8 through short net 7 by Conducting copper tile 6 respectively, and for cooperating the movement of three electrodes 2, short net 7 adopts and is flexible coupling, and presets the length that will move; One end of electrode 2 is positioned at cupola well 4; The other end of electrode 2 is connected with electrode aerator 9, below electrode aerator 9, electrode 2 is by 5 clampings of electrode grip device, and electrode grip device 5 is fixed on the moving slider 10, moving slider 10 is movably arranged on the guide rail 11 that is fixed in ground, and is connected with traction screw mandrel 12; Three electrodes 2 equidistantly distribute between any two, and under the driving of traction screw mandrel 12, electrode grip device 5 is realized mobile respectively at guide rail separately 11 together with three electrodes 2, thereby change the distance between them; For cooperating the movement of three electrodes 2, above bell 3, be mounted with the fiery trim ring 13 of mobile retaining around electrode 2, the fiery trim ring 13 of mobile retaining can block the position, hole that stays owing to moving of electrode 2 effectively, avoids producing the flame phenomenon at bell 3.Body of heater 1 bottom offers iron notch 15.
Fig. 3 and electrode aerator 9 shown in Figure 4, electrode 2 upper ends are connected with the inflator 9-3 conical surface, are provided with sealing-ring 9-8 at the conical surface that is connected of inflator 9-3 and electrode 2; Inflator 9-3 upper end offers the inlet mouth that connects carbon monoxide intake ducting 9-4; Carbon monoxide intake ducting 9-4 is connected with provides the flexible pipe of CO (carbon monoxide converter) gas 9-5; Reclaiming the carbon monoxide of separating from furnace gas can be by directly arriving molten bath in the cupola well in the flexible pipe 9-5 input electrode 2.Be welded with gas hood 9-2 on the inflator 9-3, gas hood 9-2 bottom offers the air outlet, and gas hood 9-2 one side offers the residual air intake ducting 9-6 that separates is reclaimed in connection from furnace gas inlet mouth; Intake ducting 9-6 is connected with the flexible pipe 9-7 that the furnace gas residual air of separating is provided; Reclaim the residual air of separating as diluent gas from furnace gas, can flow out the carbon monoxide that dilution inflator 9-3 and electrode 2 junctions may be leaked by the air outlet that gas hood 9-2 bottom is offered by in the flexible pipe 9-7 input gas hood 9-2.
Fig. 5 and electrode grip device 5 shown in Figure 6 include controls bracing frame 5-1, is mounted with the rubber-bag 5-2 that connects the control source of the gas in controlling bracing frame 5-1; Rubber-bag 5-2 contacts with the surface of electrode 2, and electrode 2 passes the through hole of controlling among the bracing frame 5-1, controls the piston hinge of bracing frame 5-1 and driving cylinder 5-3, and the cylinder body of driving cylinder 5-3 is fixed on the moving slider 10.
Claims (2)
1. metallic ore smelting process, including raw material ore deposit and carbon relies on electrode (2) discharge of the hot stove in ore deposit to heat the smelting of carrying out in the hot stove in ore deposit, it is characterized in that: the furnace gas that the hot fire grate in described ore deposit goes out is after overcooling, dedusting, carbon monoxide is separated from furnace gas, and the central through hole by described electrode (2) feeds in the furnace charge of smelting again; The pressure swing adsorption technique method that described gas delivery adopts concentrates purifying carbon oxide, and adsorption temp 20-55 ℃, adsorptive pressure is 0.25-1.2MPa; The hot stove in described ore deposit includes body of heater (1), by the described electrode (2) of electrode grip device (5) clamping, described electrode grip device (5) is fixed on the supporting seat (10), described supporting seat (10) is placed on the guide rail (11), and described guide rail (11) is fixed on the structures; Be provided with the traction screw mandrel (12) that drives described supporting seat (10) between described supporting seat (10) and the described structures, described electrode grip device (5) includes controls bracing frame (5-1), is mounted with the rubber-bag (5-2) that connects the control source of the gas in the bracing frame (5-1) described controlling; Described rubber-bag (5-2) contacts with the surface of electrode (2), described electrode (2) passes described through hole of controlling in the bracing frame (5-1), described piston hinge of controlling bracing frame (5-1) and driving cylinder (5-3), the cylinder body of described driving cylinder (5-3) is fixed on the described supporting seat (10); An electrode aerating coupling device (9) that includes described electrode (2) is arranged, the upper end of described electrode (2) is connected with the conical surface of an inflator (9-3), conical surface junction at described inflator (9-3) and described electrode (2) is provided with sealing-ring (9-8), outside described inflator (9-3) and described electrode (2) junction, be surrounded by gas hood (9-2), be communicated with carbon monoxide air induction hose (9-5) on the described inflator (9-3), described gas hood (9-2) bottom offers the air outlet, described gas hood (9-2) is communicated with carrier gas flexible pipe (9-7), and the carbon monoxide of separating from furnace gas is to import described electrode (2) by described carbon monoxide air induction hose (9-5); Other gas of separating from furnace gas is imported by described carrier gas flexible pipe (9-7) and is discharged after the CO (carbon monoxide converter) gas dilution that is used in the described gas hood (9-2) that described inflator (9-3) and described electrode (2) junction are leaked becomes the gas that can not fire.
2. a metallic ore smelting process includes raw material ore deposit and carbon and relies on electrode (2) discharge of the hot stove in ore deposit to heat the smelting of carrying out in the hot stove in ore deposit, it is characterized in that:
The furnace gas that the hot fire grate in described ore deposit goes out is separated carbon monoxide after overcooling, dedusting from furnace gas, the central through hole by described electrode (2) feeds in the furnace charge of smelting again; The cooling of described furnace gas be with furnace gas by the raw material in the feed preheater (14), when the mineral aggregate of going into the stokehold is carried out preheating furnace gas is cooled off; After being removed moisture through air water separator (19), the furnace gas that obtains cooling behind the raw material preheating carries out described dedusting by tornado dust collector (18) again; The pressure swing adsorption technique method that described gas delivery adopts concentrates purifying carbon oxide, and adsorption temp 20-55 ℃, adsorptive pressure is 0.25-1.2MPa; The hot stove in described ore deposit includes body of heater (1), by the described electrode (2) of electrode grip device (5) clamping, described electrode grip device (5) is fixed on the supporting seat (10), described supporting seat (10) is placed on the guide rail (11), and described guide rail (11) is fixed on the structures; Be provided with the traction screw mandrel (12) that drives described supporting seat (10) between described supporting seat (10) and the described structures, described electrode grip device (5) includes controls bracing frame (5-1), is mounted with the rubber-bag (5-2) that connects the control source of the gas in the bracing frame (5-1) described controlling; Described rubber-bag (5-2) contacts with the surface of electrode (2), described electrode (2) passes described through hole of controlling in the bracing frame (5-1), described piston hinge of controlling bracing frame (5-1) and driving cylinder (5-3), the cylinder body of described driving cylinder (5-3) is fixed on the described supporting seat (10);
An electrode aerating coupling device (9) that includes described electrode (2) is arranged, the upper end of described electrode (2) is connected with the conical surface of an inflator (9-3), conical surface junction at described inflator (9-3) and described electrode (2) is provided with sealing-ring (9-8), outside described inflator (9-3) and described electrode (2) junction, be surrounded by gas hood (9-2), be communicated with carbon monoxide air induction hose (9-5) on the described inflator (9-3), described gas hood (9-2) bottom offers the air outlet, described gas hood (9-2) is communicated with carrier gas flexible pipe (9-7), and the carbon monoxide of separating from furnace gas is to import described electrode (2) by described carbon monoxide air induction hose (9-5); Other gas of separating from furnace gas is imported by described carrier gas flexible pipe (9-7) and is discharged after the CO (carbon monoxide converter) gas dilution that is used in the described gas hood (9-2) that described inflator (9-3) and described electrode (2) junction are leaked becomes the gas that can not fire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210204953 CN102703704B (en) | 2012-06-20 | 2012-06-20 | Method for smelting metal ores |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210204953 CN102703704B (en) | 2012-06-20 | 2012-06-20 | Method for smelting metal ores |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102703704A CN102703704A (en) | 2012-10-03 |
| CN102703704B true CN102703704B (en) | 2013-09-25 |
Family
ID=46896749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210204953 Active CN102703704B (en) | 2012-06-20 | 2012-06-20 | Method for smelting metal ores |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102703704B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836984A (en) * | 2012-11-21 | 2014-06-04 | 虞文娟 | Energy-saving furnace for metal smelting |
| CN103526025A (en) * | 2013-10-22 | 2014-01-22 | 河南省西保冶材集团有限公司 | Iron alloy furnace burden production system |
| CN104482764B (en) * | 2014-12-10 | 2016-04-13 | 向方贵 | Combined type protection smelting furnace and smelting process |
| CN109207784B (en) * | 2018-10-17 | 2023-06-20 | 独山金孟锰业有限公司 | Comprehensive smelting system for manganese-silicon alloy |
| CN112254526B (en) * | 2020-10-20 | 2022-12-06 | 岫岩满族自治县恒锐镁制品有限公司 | Submerged arc furnace equipment for producing macrocrystalline fused magnesia |
| CN113969351B (en) * | 2021-11-22 | 2022-09-06 | 东北大学 | Method for preparing silicon-manganese alloy by using cooperation of reduction and electrolysis through multi-loop direct current electrode arc heating |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2697565Y (en) * | 2004-03-25 | 2005-05-04 | 李振洪 | Horizontal continuous waste steel feeding preheater for arc furnace steel making |
| CN100516739C (en) * | 2006-07-31 | 2009-07-22 | 成都高威节能科技有限公司 | Method of implementing multigun directional plasma ore smelting furnace |
| CN101643807B (en) * | 2009-09-15 | 2011-06-15 | 贾会平 | Melting and iron-smelting device of heat storage type electric arc furnace |
-
2012
- 2012-06-20 CN CN 201210204953 patent/CN102703704B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102703704A (en) | 2012-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102703704B (en) | Method for smelting metal ores | |
| CN101691620B (en) | Process and device for processing liquid steel slag | |
| CN101705360B (en) | Copper-smelting thermal slag iron-extracting process and device | |
| CN102304600B (en) | Rotary hearth furnace adopting 2-3-section distribution and discharge mode for direct reduction production | |
| CN103074460A (en) | Rotary hearth furnace equipment for segment handling of iron ore and handling method | |
| CN104357655B (en) | Ore reduces continuously and send steel-smelting device with heat | |
| CN103451445A (en) | Smelting side-blowing reduction lead-zinc smelting process | |
| CN106048254A (en) | Continuous smelting device and method of nickel-containing material | |
| CN209069003U (en) | A kind of continuous charging pre-heating device | |
| CN109237950A (en) | Continuous charging pre-heating device | |
| CN105506299A (en) | Low-grade secondary lead smelting slag fuming furnace treatment system and method | |
| CN203498450U (en) | Side-blown reducing lead-zinc smelting equipment | |
| CN210656995U (en) | Iron-containing red mud recovery large system and rock wool production system comprising same | |
| CN203999762U (en) | A kind of global smelting furnace | |
| CN202643808U (en) | Copper smelting furnace | |
| CN110938744B (en) | Lead-zinc chloride separation method in steelmaking dust resource recovery process | |
| CN203810892U (en) | Coal-oxygen blowing melting separation shaft furnace | |
| CN210287396U (en) | Device and system for producing sponge iron | |
| WO2016173248A1 (en) | Flash ironmaking system and method | |
| CN204111835U (en) | Ore reduces continuously and send steel-smelting device with heat | |
| CN206204385U (en) | A kind of reduction reaction system of the aqueous pelletizing of lateritic nickel ore | |
| CN102564130B (en) | Continuous temperature control smelting system integrating rotary kiln with melting furnace | |
| CN203079998U (en) | Rotary hearth furnace equipment for performing segment treatment on iron ore | |
| CN108754057B (en) | Device for separating pre-reduced iron-containing material and application thereof | |
| CN217948213U (en) | Microwave heating reduction device capable of preprocessing iron-containing material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 545616 Huarong Road, 5 Rong Gao town, Liuzhou, the Guangxi Zhuang Autonomous Region (high tech Zone) Patentee after: Liuzhou golden screw machinery Limited by Share Ltd Address before: 545616 5 Huarong Road, West Industrial Park, Liuzhou, Luzhai County, the Guangxi Zhuang Autonomous Region Patentee before: Liuzhou Jinluo Machinery Co., Ltd. |
|
| CP03 | Change of name, title or address |