CN101643807A - Melting and iron-smelting device of heat storage type electric arc furnace - Google Patents
Melting and iron-smelting device of heat storage type electric arc furnace Download PDFInfo
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- CN101643807A CN101643807A CN200910075372A CN200910075372A CN101643807A CN 101643807 A CN101643807 A CN 101643807A CN 200910075372 A CN200910075372 A CN 200910075372A CN 200910075372 A CN200910075372 A CN 200910075372A CN 101643807 A CN101643807 A CN 101643807A
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Abstract
The invention provides a melting and iron-smelting device of a heat storage type electric arc furnace, which comprises a furnace body of the electric arc furnace and matched equipment, at least one pair of combustion chambers and at least one pair of heat storage devices, the device is further provided with at least one pair of gasification boxes which are arranged between the furnace body of theelectric arc furnace and the combustion chambers, and at least one layer of coal grid is arranged in each gasification box. Each gasification box is provided with a bypass, and valves are arranged onan outlet, an inlet and the bypass of each gasification box. The device aims at preventing reduced substances at the gas inlet from being oxidized after that circulating gas or air enters the electricarc surface; oxygen-containing gas preheated by the heat storage devices, in particular to the air, firstly enters the combustion chambers to be mixed with fuel sprayed into the combustion chambers for burning before entering the electric arc furnace, and high-temperature flue gas is exhausted from the combustion chambers and then enters the gasification boxes to carry out gasification reaction with coal in the coal grids for generating CO, thereby forming a reducing atmosphere, optimizing the environment of melting, reducing and iron-smelting of the electric arc furnace, being conductive tothe reducing process of the reduced substances, improving the quality of reduced iron products and reducing environmental pollution.
Description
Technical field
The present invention relates to a kind of device of deoxy iron-smelting, be specifically related to a kind of device that has the heat storage type electric arc furnace deoxy iron-smelting of gasification case.
Background technology
Fused reduction iron-smelting is the important component part of Iron and Steel Production, its principal feature is as the disposable energy and reductive agent with mill coal, the oxide compound of iron is reduced under molten state, have briquet replacing coke, flow process is short, environmental pollution is little, construction investment is few, advantages such as production cost is low, by extensively good in the industry field, the iron and steel enterprise of various countries competitively researchs and develops.The method of existing fused reduction iron-smelting mainly contains COREX method (CN1010323B), DIOS method (CN1035136A), HISELT method (CN1037542A).COREX method suitability for industrialized production wherein, other two kinds of methods are still under test.But all ironmaking technique of fusion and reduction, since aspects such as energy consumption height, production cost height, difficult and blast furnace technology competition.
Granted publication number is that the Chinese patent of CN2697565Y discloses a kind of " electric-arc furnace steelmaking continuous charging scrap preheater ", its electric arc furnace has body of heater and electrode to constitute, its continuous charging steel scrap preliminary heating device is made up of preheating channel, water-cooled feeding trough etc., high-temperature flue gas in the electric arc furnace and the raw material in the preheating channel directly carry out heat exchange, can improve the preheating temperature of charging, save the energy.But this method is only utilized the sensible heat in the flue gas, can't utilize the chemical energy of the CO that produces in the steelmaking process.
The applicant provides a kind of method and apparatus of fused reduction iron-smelting in for 200810079661.2 application for a patent for invention at application number, with natural nugget ore deposit or ore agglomerates is raw material, the coal gas that produces with reduction process is as reductive agent and thermal barrier, raw material enters end reducing furnace and carries out whole reduction reaction after reacting through pre-electric arc furnace.Enter end reducing furnace after bubbing process gas treatment equipment processing of coming out in pre-reducing furnace top and the high temperature heat exchanger heating.The device of fused reduction iron-smelting includes pre-reducing furnace, gas treatment equipment and at least one end reducing furnace.Make full use of waste heat, save the energy; Use two end reducing furnace alternate runs, production efficiency height, but continuous large-scale production; The coal gas that production process is saved is supplied raw materials with course of gas for other.The applicant provides " a kind of method and apparatus of smelting iron in arc furnace " at application number for another application for a patent for invention of 2008100799930.5, includes body of heater, bell, electrode, feeding equipment and discharging equipment.Described device also comprises at least one pair of combustion chamber and at least one pair of thermophore; The combustion chamber is connected with the body of heater of electric arc furnace by Link Port; One end of thermophore is connected with the combustion chamber, and the other end is connected with blowdown system, blower fan and gas treatment equipment respectively.Patent application of the present invention makes full use of the bubbing that smelting reduction process produces, and makes the heat storage in the bubbing burning heating thermophore, by gas circulation heat is brought in the body of heater from thermophore again, makes Btu utilization reach optimizing.But the circulation of this technical gas is when thermophore is brought into heat in the body of heater, owing to contain aerobic in the gas that enters, the thing oxidation appears being reduced in ingress easily that be connected with the combustion chamber in electric arc furnace, influence reduction quality product problem, the present invention is the improvement on foregoing invention patent application basis.
Summary of the invention
For overcoming above-mentioned the deficiencies in the prior art, the invention provides a kind of device of heat storage type electric arc furnace deoxy iron-smelting,, enter electric arc furnace with the circulation gas after being preheated or waste gas after the air combustion and coal reaction generation CO, form reducing atmosphere, improve the quality of going back original product.
The device of heat storage type electric arc furnace deoxy iron-smelting provided by the invention comprises body of heater, electrode, the bell of electric arc furnace and the equipment that matches, feeding equipment and discharging equipment, and 2～8 combustion chambers and 2～8 thermophore are equipped with heat storage in the thermophore.One end of thermophore is connected with the combustion chamber, and the other end is connected with gas blower with blowdown system respectively.Described device also is provided with 2～8 gasification casees, is installed between electric arc furnace body of heater and the combustion chamber, is provided with 1～8 layer of coal grid in the gasification case, and coal dust or lump coal or honeycomb briquette are housed in the coal grid, and the top of gasification case is provided with the socket of coal grid.The gasification case is provided with bypass, and the outlet of gasification case, inlet and bypass are provided with valve.
As preferably, described device is provided with two groups of accumulation of heat/coal gasification apparatus, is positioned at the relative position of body of heater both sides, and described accumulation of heat/coal gasification apparatus comprises combustion chamber, thermophore and gasification case and connecting pipeline.Each gasification case is provided with 1～5 coal grid.The top of coal grid is provided with coal and adds inlet, and the bottom is provided with the coal ash outlet.The coal grid is a box-shaped body, makes with wire netting or ceramic orifice plate, and the preferable alloy net is a wire netting, does not get rid of the wire netting with other.
Heat storage in the described thermophore is ceramic refractory or iron and steel iron material; Heat storage be shaped as spherule or cellular polyhedron, do not get rid of heat storage with other material and other shape.The body of heater of described electric arc furnace and bell are sand seal, water jacket sealing between electrode and the bell or use the refractory materials flexible sealing, do not get rid of other seal form.Be lined with flame-proof thermal insulation material in the shell of electric arc furnace body of heater and bell, be lined with flame-proof thermal insulation material in the shell of combustion chamber, thermophore and connecting pipeline, be lined with flame-proof thermal insulation material in the shell of gas tank and bypass.Described combustion chamber is provided with burner, and described burner is solid fuel burner, liquid fuel burner, geseous fuel burner or the combination between them.Described blowdown system comprises cyclonic separator, sack cleaner, induced draft fan and chimney.
As selection scheme, the device of the described heat storage type electric arc furnace deoxy iron-smelting of 2～10 covers is installed in series together, and installation form is for being arranged side by side or being circular layout; Press close to install between two bodies of heater or be connected and installed with pipeline, be provided with connecting hole between the body of heater, the connection hole is provided with push-pull valve, and accumulation of heat/coal gasification apparatus is installed in the both wings of body of heater.Further be chosen as, described every electric arc furnace of electric arc furnace device that is circular layout is provided with a cover accumulation of heat/coal gasification apparatus.The mounting means of accumulation of heat/coal gasification apparatus is perpendicular to installing or install along each body of heater tangential direction between body of heater installation, two adjacent bodies of heater.
Except that the use electric arc furnace is made smelting furnace, can also use the combination type of furnace smelting furnace that rolls end stove, rotary hearth furnace, converter, electric arc furnace, open hearth, plasma heating furnace, iron-smelting blast furnace, resistance furnace, induction heater, Submerged-arc Furnace, electroslag furnace, melting and reducing electric arc furnace or above-mentioned stove kind.The raw material of deoxy iron-smelting of the present invention is oxide compound, natural nugget ore deposit or the ore agglomerates of block iron, various forming composition, breathe shell, partly breathe shell or unlimited shell, the perhaps mixture of above-mentioned substance.
Use the present invention to cause the place, gas inlet to be reduced material generation oxidation behind recycle gas or the air admission electric arc furnace for avoiding, when the oxygen-containing gas that is preheated through thermophore particularly before the air admission electric arc furnace, the fuel mix burning that is introduced into the combustion chamber and sprays into, high-temperature flue gas goes out the coal that enters in gasification case and the coal grid behind the combustion chamber and carries out coal gasification reaction generation CO, eliminate the oxygen in the recycle gas after the gasification, formed reducing atmosphere or weak oxygen atmosphere.Compared with prior art, the present invention is owing to installed the gasification case at the electric arc furnace inlet, make the gas oxygen-free gas that enters electric arc furnace or lack oxygenous, prevent the reduzate oxidation of electric arc furnace ingress, improved the environment of electric arc furnace fused reduction iron-smelting, help being reduced the reduction process of material, improve the quality of reduced iron, reduce environmental pollution.Can adopt many electric arc furnace series operations; installation can be arranged side by side; installation also can be circular layout; the bubbing that makes full use of the melting process generation is used for reduction process; the fusion process bubbing is fully utilized, saves the energy, can form large-scale production simultaneously; the saving production equipment takes up room, and improves ironmaking throughput.Use many electric arc furnace series operations operation, each reduction furnace hocket gas heating and electrically heated can rationally be arranged electric power, avoid concentrating electricity consumption, help keeping the power balance of electrical network, also can save powerful controller switching equipment.
Description of drawings
Fig. 1 is the schematic flow sheet of melting and iron-smelting device of heat storage type electric arc furnace of the present invention;
Fig. 2 is a blowdown system synoptic diagram of the present invention;
Fig. 3 is an electric arc furnace top electrodes distribution plan;
Fig. 4 is the schematic flow sheet that 3 melting and iron-smelting device of heat storage type electric arc furnace is arranged side by side and installs;
Fig. 5 is the schematic flow sheet that 3 melting and iron-smelting device of heat storage type electric arc furnace is circular layout and installs;
Fig. 6 installs the schematic flow sheet of another program for the present invention's 3 table apparatus are circular layout;
Fig. 7 installs the schematic flow sheet of third party's case for the present invention's 3 table apparatus are circular layout;
Fig. 8 installs the schematic flow sheet of cubic case for the present invention's 3 table apparatus are circular layout.
Wherein:
1-bell, 2-electrode, 3-pressure vent valve, 4,4a, 4b, 4c-body of heater, 5-bypass, 6-valve, 7-molten iron spout, 8-pipe connecting, 9a, 9b-gasification case, 10-coal grid, 11a, 11b-combustion chamber, 12a, 12b-thermophore, 13-heat storage, 14-gas blower, 15-cyclonic separator, 16-sack cleaner, 17-induced draft fan, 18-chimney, 19-electrode jack, 20-connecting hole, 21-push-pull valve, 22-electrode are hung post, 23-accumulation of heat/coal gasification apparatus.
Embodiment
The present invention is further illustrated below in conjunction with accompanying drawing
The device of heat storage type electric arc furnace deoxy iron-smelting of the present invention as shown in Figure 1, comprise body of heater 4, bell 1, feeding equipment and discharging equipment, molten iron spout 7 is arranged at body of heater 4 bottoms, as shown in Figure 3, three electrode jacks 19 are arranged on the bell 1, inserting 2, three electrode jacks of electrode respectively is in triangular distribution.Body of heater 4 outer a pair of combustion chamber 11a, 11b, a pair of thermophore 12a, 12b and a pair of gasification case 9a, 9b, two groups of accumulation of heat/coal gasification apparatus are installed in body of heater 2 outer relative both sides.Three layers of coal grid 10 are arranged in the gasification case, and the coal grid is netted rectangular configuration, makes with wire netting.The top of coal grid has coal to add inlet, and the coal ash outlet is arranged at the bottom, and coal adds inlet and the coal ash outlet has sealing cover.One end of gasification case is connected with the body of heater 4 of electric arc furnace by pipe connecting 8, and the other end is connected with the combustion chamber.Two of gas tank is connected with bypass 5, and the outlet of gas tank, inlet and bypass are provided with valve 6.One end of thermophore is connected with the combustion chamber, and the other end is connected with blowdown system with gas blower 14 respectively.The other two-way of combustion chamber is connected with fuel conduit with the combustion air pipeline respectively.The outlet of gas blower 14 divides four the tunnel, is connected with two thermophore with two combustion chambers respectively, and valve 6 is equipped with on every road.On the fuel conduit that is connected with the combustion chamber and the exhaust gas emission pipeline that is connected with thermophore valve is housed also.Blowdown system comprises cyclonic separator 15, sack cleaner 16, induced draft fan 17 and chimney 18.The combustion chamber is provided with burner, and burner is the geseous fuel burner, and combustion air and fuel conduit are connected to burner.Two combustion chamber alternate combustion produce high-temperature flue gas, and two thermophore replace accumulation of heat and heat release.Bubbing is the gas that produces in the metallic iron oxide compound reduction process, wherein contains a large amount of CO, H
2
Heat storage 13 is housed in thermophore 12a, the 12b, and heat storage is ceramic spherule.The body of heater of electric arc furnace and bell are steel construction.Described body of heater 4 and bell 1 are tightly connected for water jacket between electrode 2 and the bell 1.Electric arc furnace is equipped with pressure vent valve 3 as explosion-proof equipment.Be lined with flame-proof thermal insulation material in the shell of described gasification case 9 and bypass 5.Be lined with flame-proof thermal insulation material in the shell of electric arc furnace body of heater 4 and bell 1, be lined with flame-proof thermal insulation material in the shell of described combustion chamber, thermophore and connecting pipeline.
Principle of work of the present invention is, the material that is reduced is inserted in the electric arc furnace body of heater 4, start combustion chamber 11a earlier, open the valve of its fuel passage and air flue, make air and fuel in the combustion chamber internal combustion, the high-temperature flue gas that produces enters adjacent gasification case 9a, by three layers of coal grid in the gasification case, makes the high temperature CO in the flue gas successively
2Generate CO with the coal reaction, oxygen superfluous in the combustion air also is reduced in the gasification case, the high-temperature reductibility gas that goes out the gasification case enters in the reduction furnace and material generation reduction reaction by pipe connecting 8 again, the bypass of gasification case 9a is closed in this process, the valve closes that connects gasification case 9b in the other side of reduction furnace, corresponding bypass 5 passages are opened, the CO that produces in the reduction process enters combustion chamber 11b, in the 11b of combustion chamber, feed combustion air by burner, to go out the combustiblecomponents perfect combustion in the electric arc furnace gas, the high-temperature flue gas that produces is by thermophore 12b, after waste heat reached heat storage 13, discharge from the flue gas pipeline of thermophore afterbody, through cyclonic separator, sack cleaner, induced draft fan, chimney enters atmosphere.Along with entire equipment is worked in this manner, the flue-gas temperature that goes out thermophore raises gradually, equipment switch operation when thermophore outlet flue gas reaches the temperature of regulation.Freezing air is blasted by gas blower 14, through thermophore 12b, heat storage is wherein emitted heat and is added warm air, the high temperature air that leaves thermophore enters combustion chamber 11b, burn with the fuel mix that burner sprays into, the high-temperature flue gas that produces enters adjacent gasification case 9b, carry out gasification reaction with the coal in a plurality of coal grids among the gasification case 9b, the reducing gas that goes out 9b enters electric arc furnace body of heater 4 internal reactions by pipe connecting 8, the bypass of gasification case gasification case 9b is closed in this process, and the going out of the other side gasification case 9a of electric arc furnace, go into valve closes, its bypass 5 valves 6 are opened, the bubbing that goes out electric arc furnace enters combustion chamber 11a through bypass, with the combustion air mixed firing that enters the combustion chamber, behind the useless flue gas process of the generation thermophore 12a, heat is reached heat storage, discharge through the flue gas pipeline of thermophore afterbody again, through cyclonic separator, sack cleaner, induced draft fan and chimney enter atmosphere.Control two combustion chamber 11a, 11b by setting thermophore exhanst gas outlet temperature, the switch operation of two thermophore 12a, 12b and two gasification case 9a, 9b, after arriving design temperature, thermophore outlet flue gas changes air flow line automatically, the combustion chamber of this side is changed to combustion fuel by burning electric arc furnace bubbing.Thermophore flue gas design temperature is 70～150 ℃, and actual temp is set according to processing requirement.Whole process is controlled automatically, realizes switch operation by each valve of switch.
After the intravital material of electric arc furnace stove reaches certain temperature and reduction degree, close the thermophore of both sides, combustion chamber and gasification case, the electrode 2 that is positioned at the electric arc furnace roof inserts stove, continue reduction material fusing extremely fully in the heating electric arc furnace, open the molten iron spout 7 of electric arc furnace bottom, carry out next stove production after molten iron is flowed out fully.
Another embodiment of the present invention is that the devices of three cover heat storage type electric arc furnace deoxy iron-smeltings are installed in series mutually side by side and operate together, every covering device is provided with two groups of accumulation of heat/coal gasification apparatus 23, be positioned at the relative position of body of heater both sides, described accumulation of heat/coal gasification apparatus comprises combustion chamber, thermophore and gasification case and connecting pipeline.Air feed system, fuel system and exhaust emission system are shared device.Operation scheme between the electric arc furnace of each covering device, thermophore, combustion chamber, the gas tank is identical with embodiment 1.As shown in Figure 4, body of heater 4a, 4b, the 4c of three covering device electric arc furnace link together side by side, are provided with connecting hole 20 between body of heater 4a and body of heater 4b, body of heater 4b and the body of heater 4c, the connection hole is provided with plate valve 21, connect with pipeline between body of heater 4a, the 4c, and push-pull valve is set, be used for gas communication.Three bodies of heater hocket heating, reduction and melting process, when reduced material among the body of heater 4a was finished reduction process and melted, material was heating up and reduction process in other two body of heater 4b, the 4c.This moment, push-pull valve 21 was opened, and the bubbing that body of heater 4a produces enters body of heater 4b, 4c as reducing gas and combustion gases by connecting hole 20 and pipeline.Body of heater 4a finishes the fusing back and draws off molten iron and when filling with substance by molten iron spout 7, closes the push-pull valve of these body of heater both sides.When material melts among the body of heater 4b, the bubbing among the body of heater 4b by and the both sides body of heater between connecting hole 20 enter body of heater 4a, 4b.Three electric arc furnace load and unload material, reduction and melting process successively.The melting and reducing operating process of every covering device is identical with embodiment 1, repeats no more.Adopt the purpose of many electric arc furnace serial operations to be; the bubbing that makes full use of the melting process generation is used for the reduction process of reduced material in the other body of heater, and the fusion process bubbing is fully utilized, and saves the energy; can form large-scale production, improve ironmaking throughput.
Another embodiment of the present invention is that 3 electric arc furnace bodies of heater are circular layout as shown in Figure 5.It is triangular in shape that 3 electric arc furnace body of heater 4a, 4b, 4c are circular layout, and every body of heater and other two bodies of heater are pressed close to install, and are provided with connecting hole and push-pull valve 21 between per two bodies of heater.Every electric arc furnace is provided with two groups of accumulation of heat/coal gasification apparatus 23, is positioned at the both wings of body of heater, and one group of accumulation of heat/coal gasification apparatus 23 of two adjacent electric arc furnace becomes " people " font to arrange together.Air feed system, fuel system and exhaust emission system are shared device.Be provided with electrode in the middle of three bodies of heater and hang post 22, be used to hang electrode, insert electrode between body of heater in turn, carry out the reduced iron melting process.The operation scheme of present embodiment is identical with embodiment 2, and when wherein a body of heater was in fusing, other two were in intensification or reduction process, open push-pull valve 21, allow bubbing enter two adjacent bodies of heater.Finish the push-pull valve of closing this body of heater and adjacent body of heater after the melting process, carry out discharging and the new raw material of packing into, open valve then, put into that gas heats and reduction process.Adopt this kind installation form, 3 electric arc furnace use one group of electrode, and by rotating electrode, in turn the body of heater that needs are entered in the melting process inserts electrode, heating up and intercalative electrode not during reduction, to save electrode materials and investment.The employing mode that is circular layout, compact equipment installation is further saved and is taken up an area of, and further expands production capacity in limited space.
Another embodiment of the present invention such as Fig. 6, Fig. 7 and shown in Figure 8 are that the body of heater of 3 electric arc furnace devices is circular layout.It is triangular in shape that 3 electric arc furnace body of heater 4a, 4b, 4c are circular layout, and every electric arc furnace body of heater and other two bodies of heater are pressed close to install, and are provided with connecting hole and push-pull valve 21 between per two bodies of heater.Every electric arc furnace is provided with one group of accumulation of heat/coal gasification apparatus 23.Shown in Figure 6, the accumulation of heat/coal gasification apparatus of every electric arc furnace is installed perpendicular to body of heater, is 120 degree uniform distribution between three equipment.Shown in Figure 7, accumulation of heat/coal gasification apparatus is arranged along each body of heater tangential direction, makes the air-flow interior material of equiflux heater more.Figure 8 shows that accumulation of heat/coal gasification apparatus is installed between two adjacent bodies of heater, is beneficial to further save the space.Air feed system, fuel system and exhaust emission system are shared device.Be provided with electrode in the middle of three bodies of heater and hang post 22, be used to hang electrode, insert electrode between body of heater in turn, carry out reduced iron and melting process.
When work, at first start accumulation of heat/coal gasification apparatus of body of heater 4a and body of heater 4b, the push-pull valve that connects simultaneously on body of heater 4a and the body of heater 4b is opened, the connecting path of body of heater 4a and body of heater 4c is closed, the connecting path of body of heater 4b and body of heater 4c is closed, make body of heater 4a and 4b be linked to be a whole back and add thermal reduction according to the mode described in the embodiment 1, after body of heater 4a and body of heater 4b heating finishes, connect body of heater body 4a, the path blockade of 4b, connect body of heater 4a, the path of 4c is opened, make body of heater 4a and body of heater 4c connect into an integral body, accumulation of heat/coal gasification apparatus of body of heater 4a and body of heater 4c is started working and is heated, and in this process, body of heater 4b begins to carry out the heated by electrodes melting, when the melting of body of heater 4b electrode, the inflammable gas that produces can enter body of heater 4a, burning acts as a fuel and the part of reductive agent among the 4c, and the qualified molten iron after body of heater 4b finishes melting is flowed out by iron notch spout 7, again to the body of heater 4b new raw material of packing into.After body of heater 4a and body of heater 4c finish gas heating, body of heater 4a enters the arc melting stage, the connecting path of body of heater 4c and body of heater 4b is opened, make it connect into an integral body, accumulation of heat/coal gasification apparatus of corresponding body of heater 4b and body of heater 4c is started working, and body of heater 4a carries out the electrically heated melting, and finish the process of discharging and charging, according to this mode of operation, three smelting furnaces are in electrically heated state of two gas heating in turn, can realize the non-stop run of continuous production and electrode.
Two bodies of heater simultaneously by the process of gas heating in, the body of heater of finishing gas heating in the last flow process is in the condition of high temperature, and the body of heater of new clothes material is in lesser temps, in the high-temperature furnace body, the demand that air-flow is added heat is little, and for the body of heater of lesser temps, the heated air and the storeroom temperature difference are big, and it is strong to conduct heat.Entire equipment is operation automatically under PLC control, and concrete working parameter can be regulated according to production technique.
Claims (10)
1, a kind of device of heat storage type electric arc furnace deoxy iron-smelting, comprise electric arc furnace body of heater (4), electrode (2), bell (1) and the equipment that matches, feeding equipment and discharging equipment, 2～8 combustion chambers (11a, 11b) and 2～8 thermophore (12a, 12b), heat storage (13) is housed in the thermophore; One end of described thermophore is connected with the combustion chamber, the other end is connected with gas blower (14) with blowdown system respectively, it is characterized in that: described device also is provided with 2～8 gasification casees (9a, 9b), be installed between electric arc furnace body of heater and the combustion chamber, be provided with 1～10 layer of coal grid (10) in the gasification case, coal dust or lump coal or honeycomb briquette are housed in the coal grid, and the top of gasification case is provided with the socket of coal grid; Described gasification case is provided with bypass (5), and the outlet of gasification case, inlet and bypass are provided with valve (6).
2, the device of heat storage type electric arc furnace deoxy iron-smelting according to claim 1, it is characterized in that: described device is provided with two groups of accumulation of heat/coal gasification apparatus (23), be positioned at the relative position of body of heater both sides, described accumulation of heat/coal gasification apparatus comprises combustion chamber, thermophore and gasification case and connecting pipeline.
3, the device of heat storage type electric arc furnace deoxy iron-smelting according to claim 1 and 2 is characterized in that: described gasification case is provided with 1～5 layer of coal grid; The top of described coal grid is provided with coal and adds inlet, and the bottom is provided with the coal ash outlet, and described coal grid is a box-shaped body, makes with wire netting or ceramic orifice plate; Described wire netting is a wire netting.
4, the device of heat storage type electric arc furnace deoxy iron-smelting according to claim 1 is characterized in that: described heat storage (13) is ceramic refractory or ferrous materials; Described heat storage be shaped as spherule or cellular polyhedron.
5, the device of heat storage type electric arc furnace deoxy iron-smelting according to claim 1 is characterized in that: the device of the described heat storage type electric arc furnace deoxy iron-smelting of 2～8 covers is combined and installed together, and installation form is for being arranged side by side or being circular layout; Press close to install between two electric arc bodies of heater or be connected and installed with pipeline, be provided with connecting hole (20) between the body of heater, the connection hole is provided with push-pull valve (21).
6, the device of heat storage type electric arc furnace deoxy iron-smelting according to claim 1 is characterized in that: the described electric arc furnace device that is circular layout, and every electric arc furnace is provided with a cover accumulation of heat/coal gasification apparatus (23); The mounting means of accumulation of heat/coal gasification apparatus is perpendicular to installing or install along each body of heater tangential direction between body of heater installation, two adjacent bodies of heater.
7, the device of heat storage type electric arc furnace deoxy iron-smelting according to claim 1 is characterized in that: body of heater of described electric arc furnace (4) and bell (1) are the sealing of sand seal or water jacket between electrode (2) and the bell (1) or use the refractory materials flexible sealing.
8, the device of heat storage type electric arc furnace deoxy iron-smelting according to claim 1, it is characterized in that: be lined with flame-proof thermal insulation material in the shell of described electric arc furnace body of heater (4) and bell (1), be lined with flame-proof thermal insulation material in the shell of described combustion chamber, thermophore and connecting pipeline, be lined with flame-proof thermal insulation material in the shell of described gasification case and bypass, the outside is provided with thermal insulation layer.
9, the device of heat storage type electric arc furnace deoxy iron-smelting according to claim 1 is characterized in that: described process furnace is provided with burner, and described burner is solid fuel burner, liquid fuel burner, geseous fuel burner or the combination between them.
10, the device of heat storage type electric arc furnace deoxy iron-smelting according to claim 1 is characterized in that: described blowdown system comprises cyclonic separator (15), sack cleaner (16), induced draft fan (17) and chimney (18).
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| CN200910075372XA CN101643807B (en) | 2009-09-15 | 2009-09-15 | Melting and iron-smelting device of heat storage type electric arc furnace |
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| CN200910075372XA CN101643807B (en) | 2009-09-15 | 2009-09-15 | Melting and iron-smelting device of heat storage type electric arc furnace |
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| CN101864505A (en) * | 2010-07-13 | 2010-10-20 | 贾会平 | Combined method and device for smelting reduction ironmaking |
| CN102703704A (en) * | 2012-06-20 | 2012-10-03 | 柳州市金螺机械有限责任公司 | Method for smelting metal ores |
| CN106196038A (en) * | 2016-08-05 | 2016-12-07 | 中国航天空气动力技术研究院 | The auxiliary combustion equipment of coal-fired gasification furnace |
| CN110775999A (en) * | 2019-11-29 | 2020-02-11 | 云南锡业锡化工材料有限责任公司 | Equipment and process for producing low-iron tin dioxide |
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| CN1109510A (en) * | 1994-03-26 | 1995-10-04 | 河南省冶金研究所 | Oxygen coal-gas base directly reducing technology |
| CN2270887Y (en) * | 1996-09-17 | 1997-12-17 | 翟龙甫 | Raw coal gasification combustion device |
| CN1624159B (en) * | 2003-12-05 | 2010-11-03 | 山东省冶金设计院 | Hot-blast stove heating from dual-end of air pipe of heat storage device set |
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