CN206385197U - A kind of system for handling ferrous material - Google Patents

A kind of system for handling ferrous material Download PDF

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Publication number
CN206385197U
CN206385197U CN201621195960.9U CN201621195960U CN206385197U CN 206385197 U CN206385197 U CN 206385197U CN 201621195960 U CN201621195960 U CN 201621195960U CN 206385197 U CN206385197 U CN 206385197U
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furnace
zone
fusion
decanting
fusion zone
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王欣
刘占华
陈文亮
王岩
曹志成
薛逊
吴道洪
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Jiangsu Province Metallurgical Design Institute Co Ltd
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Jiangsu Province Metallurgical Design Institute Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Abstract

The utility model discloses a kind of system for handling ferrous material, the system includes:Hybrid system, formation system, drying system, roasting system and melting furnace system;Wherein, the discharging opening of hybrid system is communicated with the feeding mouth of formation system, the discharging opening of formation system is communicated with the feeding mouth of drying system, and the discharging opening of drying system is communicated with the feeding mouth of roasting system, and the discharging opening of roasting system is communicated with the charging aperture of melting furnace system.The utility model system is suitable for the ferrous materials such as processing iron ore, lateritic nickel ore, vanadium titano-magnetite, metallurgical dust, nonferrous smelting slag, has the advantages that melting cost is low, environment-friendly, product quality is high, adaptability to raw materials is wide, the rate of recovery is high.

Description

A kind of system for handling ferrous material
Technical field
The system that the utility model is related to processing ferrous material, belongs to the process field of ferrous material.
Background technology
The slag sluicing system of ferrous material is generally realized using blast furnace and electric furnace etc. at present.Blast furnace is a kind of upright type of furnace, is fitted When being smelted iron using it, Technological Economy need to be there is using coke as raw material for handling acid pellet or sintering deposit, and also Index is good, and technique is simple, and output is big, and labor productivity is high, low power consumption and other advantages, but there is also to entering stove thing for blast furnace The requirement of material is high, coking coal, energy consumption need to be used higher and the low shortcoming of efficiency of energy utilization;Electric furnace is that the electric energy in stove is converted into Heat has furnace atmosphere to be easily controlled the heating furnace of workpiece heat, its advantage, and material heating is fast, and heating-up temperature is high, produces Journey is easier to realize mechanization and automation, and labour health condition is good, and the thermal efficiency is high, good product quality, and more environmentally-friendly, but electric furnace Obvious shortcoming is similarly there is, the problems such as such as controller switching equipment is costly, power cost is high and should be noted insulation.
Patent No. ZL200810079930.5 Chinese utility model patent provides a kind of side of smelting iron in arc furnace Method and device, smelting furnace part include body of heater 2, bell 10, charging (feeding) equipment and discharging equipment, and molten iron outflow port is arranged at the bottom of body of heater 2 9.There are three electrode jacks 12 on bell 10, electrode 1 is inserted respectively, each of three electrodes jack is in triangular distribution.Body of heater 2 is outer a pair Heating furnace 5a, 5b and a pair of storage heaters 6a, 6b, two heating furnace relative positions are arranged on the both sides outside body of heater 2.Heating furnace passes through Connector 4 is connected with the body of heater 2 of electric arc furnaces, and gas can flow back and forth in connector.Storage heater 6a, 6b one end and heating furnace Connection, the other end is connected with air blower 8 and exhaust system respectively.Heating furnace is provided with burner, combustion air pipeline and fuel conduit It is connected to burner.Four tunnels of the outlet of air blower 8 point, are connected with two heating furnaces and two storage heaters respectively, and valve is housed per road Door.The fuel conduit being connected with heating furnace and it is also equipped with valve on the exhaust pipe road being connected with storage heater.Two heating furnaces Alternate combustion fuel and bubbing, two storage heater alternating accumulation of heats and heat release.Bubbing is that metal ferriferous oxide was reduced The gas produced in journey, wherein containing substantial amounts of CO, H2.The heat storage 7 of the storage heater is ceramic ball body.The body of heater of electric arc furnaces And bell is steel construction.The body of heater 2 and bell 10, are tightly connected between electrode 1 and bell 10 for water collar.Electric arc furnaces is equipped with Pressure air defense valve 11 is used as explosion-protection equipment;Major defect present in the electric arc furnaces is as follows:
(1) in melting burner hearth, on the one hand because thermal current in heating furnace or even flame enter in smelting furnace burner hearth directly Graphite electrode is blown, it will wash away electrode material and cause consumption of electrode to accelerate;Another aspect thermal current is in smelting furnace row The stop of electrode is run on inbound path, it will cause the disorder of air-flow.
(2) a large amount of gases will be produced in the metal oxide reduction process, it is unavoidable to produce a large amount of foamed slags, The thermal current that these foamed slags enter smelting furnace burner hearth after floating through heating furnace, which drives, to be made with Airflow obstruction ventilation shaft It is not smooth into producing.
(3) in heating furnace mainly by the bubbing in smelting furnace as combustion gas, its growing amount with material and coal, The change of the proportionings such as coke has very great fluctuation process, causes the unstability of burning, influences the control of in-furnace temperature.Due to combustible gas Body is uncontrollable in amount, is likely to result in explosion accident.
(4) fuel gas is burnt with combustion air in heating furnace, rather than is directly carried out in smelting furnace burner hearth Burning, unavoidably causes thermal loss, the not high of heat utilization ratio
Patent No. ZL201020682060.3 Chinese utility model patent discloses a kind of gas heat accumulating type melting furnace, Including calciner 1, holding furnace 10.The burner hearth bottom of calciner 1 is higher than the burner hearth bottom of holding furnace 10, the burner hearth bottom of calciner 1 Portion is connected by skewed slot 11 with the burner hearth bottom of holding furnace 10.A set of burner is respectively equipped with calciner 1 and holding furnace 10; Aluminium liquid in calciner 1 is concentrated after thawing, the inside holding of holding furnace 10 is flowed into through skewed slot 11, all using combustion in two burner hearths Gas combustion heating.Major defect present in the gas heat accumulating type melting furnace is as follows:
(1) have the shortcomings that combustion gas smelting furnace is intrinsic, using radiant heat transfer, the thermal efficiency is low, it is difficult to realize higher molten bath, Bed utilization rate is low, it is difficult to realize large-scale.
(2) it is mainly for the melting of aluminium ingot, and adaptability to raw materials is narrower, when handling the larger material of dregginess, due to molten Slag will be floated over above metal liquid phase, and slag thermal conductivity itself is very poor, it will greatly stop heat from burner hearth to metal phase Conduction, causes thermal state metal to be deteriorated with slag contacts surface mass-and heat-transfer, it is most likely that to cause thermal state metal to be separated with slag tired Difficulty, and produce the situation of metal recovery rate reduction so that productivity effect is not good.
Application No. 200910075372.X Chinese utility model patent discloses a kind of heat storage type electric arc furnace melting refining The device of iron, including electric arc furnace body (4), electrode (2), bell (1) and the equipment, charging (feeding) equipment and the discharging equipment that match, 2 Heat storage (13) is housed in~8 combustion chambers (11a, 11b) and 2~8 storage heaters (12a, 12b), storage heater;The storage heater One end be connected with combustion chamber, the other end is connected with exhaust system and air blower (14) respectively, and described device is additionally provided with 2~8 Coal gasification case (9a, 9b), between electric arc furnace body and combustion chamber, provided with 1~10 layer of coal grid (10) in coal gasification case, Coal grid is built with coal dust or lump coal or honeycomb briquette, and the top of coal gasification case is provided with the socket of coal grid;The coal gasification case is set There is bypass (5), outlet, entrance and the bypass of coal gasification case are provided with valve (6).The device institute of the heat storage type electric arc furnace deoxy iron-smelting The major defect of presence is as follows:
(1) still using electrode as heating element heater, therefore its energy consumption is still higher;
(2) fail to realize in different fusing sections, using different fusing separate modes, therefore the energy utilization ratio not It is high.
Utility model content
Main purpose of the present utility model be to provide it is a kind of handle ferrous material system, the system be suitable for iron ore, The ferrous materials such as lateritic nickel ore, vanadium titano-magnetite, metallurgical dust, nonferrous smelting slag, with melting cost it is low, environment-friendly, production The advantages of quality is high, adaptability to raw materials is wide, the rate of recovery is high.
Above-mentioned purpose of the present utility model is mainly achieved through the following technical solutions:
A kind of system for handling ferrous material, including:Hybrid system, formation system, drying system, roasting system, heating Melting furnace system;Wherein, hybrid system discharging opening is communicated with formation system feeding mouth, and formation system discharging opening enters with drying system Material mouth is communicated, and drying system discharging opening is communicated with roasting system feeding mouth, and roasting system discharging opening enters with melting furnace system Material mouth is communicated;
The melting furnace system includes furnace foundation, the refractory-lined ovens bottom being located on furnace foundation and body of heater, the body of heater Including side wall, partition wall and furnace roof;The burner hearth of body of heater is divided into fusion zone and decanting zone, partition wall by the partition wall extended downwardly from furnace roof Lower end and refractory-lined ovens bottom are at regular intervals, it is allowed to which the fluid melted in fusion zone flows to decanting zone;Wherein, decanting zone furnace bottom is less than Fusion zone furnace bottom, fusion zone furnace bottom using tilting design, and one end adjacent with decanting zone tilt down and with decanting zone phase It is logical;In fusion zone, the furnace roof away from decanting zone one end is provided with charging aperture;Burner is provided with relative both walls in fusion zone; The graphite electrode through furnace roof is provided with decanting zone, the outlet and heat supply discharged for slag are respectively equipped with the bottom of decanting zone The outlet of state metal discharge.
As a kind of preferred structure of the present utility model, in described decanting zone, relative both sides are arranged symmetrically two Fusion zone;The furnace bottom angle of inclination of fusion zone is between 3-5 °, it is ensured that the material after fusing can flow to partition wall direction, so that most Decanting zone is entered eventually.Decanting zone on furnace roof through having graphite electrode and graphite electrode is inserted into molten bath, using electric arc plus Heat is incubated and completes drastic reduction, it is ensured that the final separation of slag and thermal state metal.
As another preferred structure of the present utility model, the distance at partition wall and refractory-lined ovens bottom highly is 500~ 800mm, distance is interval interior herein, can not only ensure that melt smoothly flows into decanting zone from fusion zone, can also realize fusion zone With the isolation of decanting zone atmosphere and heat, it is ensured that the independence in two regions.If apart from too low, the stream of melt can be hindered It is dynamic;If apart from too high, the atmosphere of fusion zone and decanting zone mutually flows, and can cause the conduction of two region heats, it is impossible to right The control respectively of trip temperature and atmosphere is entered in two regions.
As another preferred structure of the present utility model, the middle and upper part of decanting zone is located at for the outlet that slag is discharged, It is respectively positioned on for the outlet that thermal state metal is discharged positioned at the bottom of decanting zone, and two outlets under the furnace bottom least significant end of fusion zone.
As another preferred structure of the present utility model, fired in fusion zone in relative both walls provided with heat accumulating type Burner, heat-storage type burner alternate blowing flame combustion, using material in high temperature conduction heating fusion zone, material starts softening simultaneously Ultimately form flowable melt.Fusion zone furnace bottom is designed using tilting, it is ensured that flowable melt to fusion zone and decanting zone it Between partition wall side flowing.Partition wall has certain gap with refractory-lined ovens bottom, it is ensured that melt is entered in decanting zone.The fusing Melting materialss heat using combustion gas and the mixed combustion of high temperature combustion air in area, and decanting zone is using graphite electrode heating fusing separation gold Category and slag, it is further preferred that the combustion gas is fuel gas with low heat value.
Described heat-storage type burner includes burner, regenerator, air blower, flue, gas pipeline, flue gas and air Common conduit, four-way reversing valve and air-introduced machine;Multiple burners are relative respectively to be located on the wall of described fusion zone opposite sides, Burner is provided with gas pipeline, the top connection of burner and regenerator.
It is preferred that, side wall, furnace roof and the furnace foundation of the body of heater are built into using refractory material and refractory brick.
It is preferred that, cooling Copper Water Jacket is set inside the refractory material of side wall and furnace roof.
The utility model further provides a kind of method for applying the system to handle ferrous material, including:
(1) ferrous material, reducing agent, additive are mixed in hybrid system;
(2) aqueous pelletizing is made in well mixed material in formation system;
(3) aqueous pelletizing is dried in drying system and obtains drying pelletizing;
(4) drying pelletizing is subjected to reduction roasting in roasting system, obtains metallized pellet;
(5) metallized pellet and additive are put into fusion zone from the charging aperture of melting furnace, is arranged on fusion zone The heat-storage type burner alternate blowing flame combustion of interior opposite sides makes material soften to form flowable melt and by partition wall Opening enters decanting zone;
Melt forms molten bath in decanting zone, is heated using the graphite electrode for inserting molten bath, at the same with melt Reduction reaction occurs for metal oxide, and slag and thermal state metal are finally recovered;Thermal state metal sinks down into bottom, by setting Put the outlet discharge in decanting zone bottom;Top is floated on slag, is discharged by being arranged on the outlet of middle and upper part of decanting zone.
By controlling heat-storage type burner in the fusion zone, it is ensured that the atmosphere in fusion zone is reducing atmosphere, so that Avoid metal to aoxidize in fusion process, influence recovering effect.
The temperature of control fusion zone is preferably 1300~1500 DEG C in step (3);
The temperature in control settlement area is preferably 1500~1800 DEG C in step (4), and residence time of the material in decanting zone is controlled It is made as 30~80min.
The main beneficial effect of technical solutions of the utility model
(1) the utility model provides a kind of system for handling ferrous material and its application in processing ferrous material, The system includes:Hybrid system, formation system, drying system, roasting system and melting furnace system;It is new using this practicality The ferrous materials, tool such as system and method processing iron ore, lateritic nickel ore, vanadium titano-magnetite, metallurgical dust, the nonferrous smelting slag of type Have the advantages that melting cost is low, environment-friendly, product quality is high, adaptability to raw materials is wide, the rate of recovery is high.
(2) it is described heating smelting system smelting furnace using body of heater subregion set, be respectively equipped with interconnect still have every Two fusion zones of wall and a decanting zone, can be achieved the accurate control of fusion zone and decanting zone melting condition and atmosphere.Molten Change area's melting materialss, completion drastic reduction in insulation molten bath is reacted in decanting zone and so that thermal state metal is separated with slag.First by More than the 80% of consumption fusing gross energy is usually required in the fusing of solid material, so using heat-storage type burner in fusion zone Combustion gas provides heat, greatly reduces melting cost, it is to avoid be used as main heating using the expensive power energy (electric arc) Source.And furnace bottom is designed using tilting in the area, it is flow to after material melting in decanting zone, the less height of bed of material holding (< 500mm), it is to avoid fuel gas buring heats the defect of poor thermal conduction.Secondly in decanting zone by institute's calorific requirement is less, using electric arc plus Heat, it is ensured that higher melt pool height, improves smelting furnace monomer yield, it is to avoid fuel gas buring heated molten bath is highly difficult to carry High defect.
(3) heating smelting system uses regenerative combustion technology in fusion zone, first using temperature more than 1000 DEG C High-temperature air combustion promoter, greatly reduce gas consumption, smoke discharge amount substantially reduce, improve melting in-furnace temperature (>1500 DEG C), exhaust gas temperature be reduced to less than 250 DEG C, the thermal efficiency it is high.Using low heat value (<3000Kcal/m3) coal gas, coal gas, especially It can by the use of coal resources such as cheap, industrial lignite jet coals without value as coal gas raw material, its into Originally it is the 50% even lower of electricity price lattice.
(4) heating smelting system is avoided in fusion zone using the fuel combustions such as coke heating, and final products will not be made Into the pollution of objectionable impurities elements.Follow-up refining cost is greatly reduced, value-added content of product is improved.
In summary, the utility model provides a kind of processing ferrous material and its application in ferrous material, and it is System includes:Hybrid system, formation system, drying system, roasting system and melting furnace system;The melting furnace system Combine the advantage of fuel gas buring melting furnace and electric arc heated smelting furnace, it is to avoid the shortcomings of both smelting furnaces.Using It is divided into the fusion zone and decanting zone interconnected in smelting furnace, fusion zone furnace bottom uses inclined design, and furnace bottom angle of inclination is in 3- Between 5 °, and higher than decanting zone furnace bottom.The relatively thin bed of material is used in fusion zone, it is ensured that fuel gas buring heat transfer efficiency, adopted in decanting zone High molten bath operation, improves smelting furnace monomer yield.Electric arc heated is used in decanting zone as fuel using combustion gas in fusion zone Auxiliary is incubated and completes drastic reduction, greatly reduces production cost, and can obtain the lower slag of tenor, metal content more High thermal state metal product, melting cost reduction, smelting efficiency is improved, and good product quality is environment-friendly, there is very high practical valency Value.
Brief description of the drawings
The schematic diagram of the system of Fig. 1 the utility model processing ferrous material.
Fig. 2 melting furnace schematic diagrames provided by the utility model;
Contained heat-storage type burner schematic diagram in Fig. 3 the utility model melting furnaces;
Heat-storage type burner fundamental diagram after Fig. 4 commutations.
Description of reference numerals:1- furnace foundations, 2- refractory material furnace bottoms, 3- body of heater side walls, 4- partition walls, 5- furnace roofs, 6- chargings Mouthful, 7- slag exits, 8- thermal state metals outlet, 9- heat-storage type burners burner, 10- regenerator, 10a, 10b- heat-storing material stores Hot body, 11- air blowers, 12- flues, 13a, 13b- gas pipeline, 14- graphite electrodes, 15- fusion zones, 16- decanting zones, 17- solid materials, 18- molten baths, 19a, 19b- flue gas and air common conduit, 20- four-way reversing valves, 21- fume treatments dress Put, 22- air-introduced machines.
Embodiment
With reference to Fig. 1, the utility model provides a kind of system for handling ferrous material, including:Hybrid system S100, shaping System S200, drying system S300, roasting system S400 and melting furnace system S500;Wherein, hybrid system S100 goes out Material mouth is communicated with formation system S200 feeding mouth, formation system S200 discharging opening and drying system S300 feeding mouth phase Logical, drying system S300 discharging opening is communicated with roasting system S400 feeding mouth, roasting system S400 discharging opening and heating Melting furnace system S500 feeding mouth is communicated;
With reference to Fig. 2, the melting furnace system S500 includes furnace foundation 1, refractory material furnace bottom 2, built-in cooling copper water The body of heater side wall 3 being built into by refractory brick and refractory material of set, the partition wall 4 between fusion zone 15 and decanting zone 16 is located at Furnace roof 5 above burner hearth, the charging aperture 6 located at the top of 15 furnace roof of fusion zone 5, positioned at the lower section of decanting zone 16 slag exit 7 with Thermal state metal outlet 8, the heat-storage type burner burner 9 on the opposite sides wall of fusion zone 15, the accumulation of heat inside regenerator 10 Body 10a, 10b, air blower 11, flue 12, gas pipeline 13a, 13b are placed in the graphite electrode 14 of the furnace roof 5 of decanting zone 16; Smelting furnace is divided into fusion zone 15, decanting zone 16, and fusion zone 15 is arranged symmetrically in the both sides of decanting zone 16, and the furnace bottom of fusion zone 15 will height In the furnace bottom of decanting zone 16.The furnace bottom of fusion zone 15 is using tilting furnace bottom, after furnace bottom angle of inclination is melted between 3-5 ° with guarantee Material can flow to the direction of partition wall 4, so as to enter eventually into decanting zone 16.Solid material 17 puts into fusing by charging aperture 6 In area 15, the heat-storage type burner alternate blowing flame combustion of opposite sides in fusion zone 15 is molten using high temperature conduction heating Change material in area 15, material starts to soften and ultimately form flowable melt.The furnace bottom of fusion zone 15 is designed using tilting, it is ensured that Flowable melt flows to the side of partition wall 4 between fusion zone 15 and decanting zone 16.Have one with refractory-lined ovens bottom below partition wall 4 Set a distance, it is ensured that melt is entered in decanting zone 16.In decanting zone 16, by the melt composition liquid constantly entered from fusion zone 15 The molten bath 18 of state, in decanting zone 16, furnace roof 5 is through there is graphite electrode 14, and graphite electrode 14 is inserted into molten bath 18, utilizes electric arc Heating and thermal insulation simultaneously completes drastic reduction, it is ensured that the final separation of slag and thermal state metal, and the slag after separation is by the row of slag exit 7 Go out, thermal state metal is discharged by thermal state metal outlet 8.
The operation principle of regenerative combustion technology is that the combustion gas that low cost is relied primarily in fusion zone is burnt, according to By regenerative combustion technology, in-furnace temperature is that can be up to more than 1500 DEG C in the state of amount of consumed gas is relatively fewer.Store Hot type burner primary structure is as shown in figure 4, including being arranged in burner 9, regenerator 10 on the relative side wall in fusion zone, regenerator Heat storage 10a, 10b, gas pipeline 13a, 13b, flue gas and air common conduit 19a, 19b, four-way reversing valve 20, fume pipe Road 12, flue gas processing device 21, air blower 11, air-introduced machine 22.
Fig. 3 shows the operation principle of heat-storage type burner, when right side burner combustion, and arrow represents that air-flow is walked in way To.Cold conditions air enters to enter to be provided with by flue gas and air common conduit 19a after four-way reversing valve 20 via air blower 11 to be stored Hot body 10a regenerator, now heat storage 10a is in the condition of high temperature, and temperature is up to more than 1000 DEG C, and main material can be honeybee The high refractory material of the heat exchange efficiency such as nest body and Ceramic Balls.Cold conditions air is exchanged heat when passing through heat storage 10a with it, cold conditions Air is heated to form the high temperature air that temperature is up to 1000 DEG C, and heat storage 10a temperature is then gradually reduced.Now gas pipeline 13a is in open mode, and 13b is closed.The combustion gas entered by gas pipeline 13a passes through after being pre-mixed with high temperature air Burner, which is injected in fusion zone 15, to be burnt, and ignition temperature can reach more than 1500 DEG C.Due to the effect of air-introduced machine 22, melt The high-temperature flue gas changed in area's internal furnace is entered in the regenerator provided with heat storage 10b by drainage, and now heat storage 10b is in temperature Compared with low state, temperature is below 500 DEG C, and its material is identical with preceding addressed heat storage 10a.Enter out of fusion zone burner hearth High-temperature flue gas carries out the heat exchange of high-temperature flue gas and heat storage by the heat storage 10b of low temperature, and heat storage 10b is gradually heated to More than 1000 DEG C, and high-temperature flue gas is cooled to less than 250 DEG C, passes through flue gas and air common conduit 19b and four-way reversing valve Enter flue 12 after 20, air is discharged into after flue gas processing device 21.After certain time, gas pipeline 13a first Close, four-way reversing valve 20 commutates afterwards, and operation principle is as shown in figure 4, the cold conditions air blasted by air blower 11 passes through four-way Enter flue gas after reversal valve 20 with being entered after air common conduit 19b in the regenerator provided with heat storage 10b, due to four-way Heat storage 10b has been heated to more than 1000 DEG C before reversal valve 20 commutates, and cold conditions air occurs after passing through heat storage 10b with it Heat exchange, cold conditions air, which is heated to 1000 DEG C or so, turns into high temperature air, and heat storage 10b is then gradually cooled down.Now Gas Pipe Road 13b is opened, and combustion gas starts burning after being mixed with high temperature air, and combustion flame temperature can be up to more than 1500 DEG C.Due to drawing High-temperature flue gas in the effect of blower fan 22, the burner hearth of fusion zone 15 is entered in the regenerator provided with heat storage 10a, temperature noted earlier The heat storage 10a of degree reduction is exchanged heat with high-temperature flue gas, and heat storage is gradually heated to more than 1000 DEG C, and high-temperature flue gas is then Be gradually cooled as it passes through the cooler to less than 250 DEG C, by after four-way reversing valve 20 after by flue 12, it is net in flue gas processing device 21 Discharged after change.As described above, the regenerator burner alternation of left and right two, four-way reversing valve 20, gas pipeline 13 etc. are adopted Use Automated condtrol.Arrangement of the regenerator burner on the side wall of fusion zone 15 is also used and is in tilted layout, the gradient and fusion zone 15 Furnace bottom is consistent, it is ensured that burner 9 keeps optimum distance with material, improves heat conduction efficiency.
Embodiment one
A kind of system for handling iron ore, iron ore and reduction coal is well mixed in hybrid system S100, in formation system S200 be made after pelletizing in drying system S300 dry, the pelletizing after drying in roasting system S400 after reduction roasting, Melting is carried out in input melting furnace system S500.Melting furnace system S500 structures as shown in figure 3, including furnace foundation 1, Refractory material furnace bottom 2, the body of heater side wall 3 being built into by refractory brick and refractory material of built-in cooling Copper Water Jacket, positioned at fusion zone 15 Partition wall 4 between decanting zone 16, the furnace roof 5 above burner hearth, the charging aperture 6 located at the top of 15 furnace roof of fusion zone 5, position Slag exit 7 and thermal state metal outlet 8 in decanting zone 16,5 groups of heat storage type combustions on the opposite sides wall of fusion zone 15 Heat storage 10a, 10b inside device burner 9, regenerator 10, air blower 11, flue 12, gas pipeline 13a, 13b are placed in The graphite electrode 14 of the furnace roof 5 of decanting zone 16.
Smelting furnace is divided into fusion zone 15, decanting zone 16, and fusion zone 15 is arranged symmetrically in the both sides of decanting zone 16, fusion zone 15 Furnace bottom is higher than the furnace bottom of decanting zone 16.Solid material 17 is put into fusion zone 15 by charging aperture 6, relative in fusion zone 15 The heat-storage type burner alternate blowing flame combustion of both sides, using material in high temperature conduction heating fusion zone, material starts softening And ultimately form flowable melt.
The furnace bottom of fusion zone 15 using tilting design, its angle design be 3 °, it is ensured that flowable melt to fusion zone 15 with The distance at the side of partition wall 4 flowing between decanting zone 16, partition wall 4 and refractory-lined ovens bottom 2 is 500mm, it is ensured that melt enters sedimentation In area 16.
In decanting zone 16, by the molten bath 18 of the melt composition liquid constantly entered from fusion zone 15, in the stove of decanting zone 16 Top 5 is through there is graphite electrode 14, and graphite electrode 14 is inserted into molten bath 18, is incubated using electric arc heated and is completed drastic reduction, Ensure the final separation of slag and thermal state metal, the slag after separation is discharged by slag exit 7, and thermal state metal is gone out by thermal state metal Mouth 8 is discharged, and obtains the higher thermal state metal product of the lower slag of tenor, metal content.
Embodiment two
A kind of system for handling copper ashes, by copper ashes, reduction coal and lime stone according to a certain percentage in hybrid system S100 It is well mixed, dried after pelletizing is made in formation system S200 in drying system S300, the pelletizing after drying is in roasting system S400 is melted reduzate with addition of a certain amount of quick lime input melting furnace system S500 after reduction roasting Refining.Melting furnace system S500 structures are as shown in Figure 3:Including furnace foundation 1, refractory material furnace bottom 2, built-in cooling Copper Water Jacket The body of heater side wall 3 being built into by refractory brick and refractory material, the partition wall 4 between fusion zone 15 and decanting zone 16, positioned at burner hearth The furnace roof 5 of top, the charging aperture 6 located at the top of 15 furnace roof of fusion zone 5, positioned at the lower section of decanting zone 16 slag exit 7 with it is hot Metal outlet 8,3 groups of heat-storage type burner burners 9 on the opposite sides wall of fusion zone 15, the accumulation of heat inside regenerator 10 Body 10a, 10b, air blower 11, flue 12, gas pipeline 13a, 13b are placed in the graphite electrode 14 of decanting zone furnace roof.
Smelting furnace is divided into fusion zone 15, decanting zone 16, and fusion zone 15 is arranged symmetrically in the both sides of decanting zone 16, fusion zone 15 Furnace bottom is higher than the furnace bottom of decanting zone 16.Solid material 17 is put into fusion zone 15 by charging aperture 6, relative in fusion zone 15 The heat-storage type burner alternate blowing flame combustion of both sides, using material in high temperature conduction heating fusion zone, material starts softening And ultimately form flowable melt.
The furnace bottom of fusion zone 15 using tilting design, its angle design be 4 °, it is ensured that flowable melt to fusion zone 15 with The distance at the side of partition wall 4 flowing between decanting zone 16, partition wall 4 and refractory-lined ovens bottom 2 is 650mm, it is ensured that melt enters sedimentation In area 16.
In decanting zone 16, by the molten bath 18 of the melt composition liquid constantly entered from fusion zone 15, in the stove of decanting zone 16 Top 5 is through there is graphite electrode 14, and graphite electrode 14 is inserted into molten bath 18, is incubated using electric arc heated and is completed drastic reduction, Ensure the final separation of slag and thermal state metal, the slag after separation is discharged by slag exit 7, and thermal state metal is gone out by thermal state metal Mouth 8 is discharged, and obtains the higher thermal state metal product of the lower slag of tenor, metal content.
Embodiment three
A kind of system for handling nickel slag, mixes equal in hybrid system S100 according to a certain percentage by nickel slag, semi-coke and soda ash It is even, it is made after pelletizing and is dried in drying system S300 in formation system S200, the pelletizing after drying is in roasting system S400 After reduction roasting, reduzate is put into melting furnace system S500 with addition of a certain amount of fluorite and carries out melting.Heating Melting furnace system S500 structures are as shown in Figure 3:Including furnace foundation 1, refractory material furnace bottom 2, built-in cooling Copper Water Jacket by fire resisting The body of heater side wall 3 that brick and refractory material are built into, the partition wall 4 between fusion zone 15 and decanting zone 16, above burner hearth Furnace roof 5, the charging aperture 6 located at the top of 15 furnace roof of fusion zone 5, the slag exit 7 positioned at the lower section of decanting zone 16 goes out with thermal state metal Mouthfuls 8,4 groups of heat-storage type burner burners 9 on the opposite sides wall of fusion zone 15, the heat storage 10a inside regenerator 10, 10b, air blower 11, flue 12, gas pipeline 13a, 13b are placed in the graphite electrode 14 of decanting zone furnace roof.
Smelting furnace can be divided into fusion zone 15, decanting zone 16, and fusion zone 15 is arranged symmetrically in the both sides of decanting zone 16, fusing The furnace bottom of area 15 is higher than the furnace bottom of decanting zone 16.Solid material 17 is put into fusion zone 15 by charging aperture 6, the phase in fusion zone 15 To the heat-storage type burner alternate blowing flame combustion of both sides, using material in high temperature conduction heating fusion zone, material starts soft Change and ultimately form flowable melt.
The furnace bottom of fusion zone 15 using tilting design, its angle design be 5 °, it is ensured that flowable melt to fusion zone 15 with The distance at the side of partition wall 4 flowing between decanting zone 16, partition wall 4 and refractory-lined ovens bottom 2 is 800mm, it is ensured that melt enters sedimentation In area 16.
In decanting zone 16, by the molten bath 18 of the melt composition liquid constantly entered from fusion zone 15, in the stove of decanting zone 16 Top 5 is through there is graphite electrode 14, and graphite electrode 14 is inserted into molten bath 18, is incubated using electric arc heated and is completed drastic reduction, Ensure the final separation of slag and thermal state metal, the slag after separation is discharged by slag exit 7, and thermal state metal is gone out by thermal state metal Mouth 8 is discharged, and obtains the higher thermal state metal product of the lower slag of tenor, metal content.
The fuel gas buring and electric arc combined heat smelting furnace are used to handle fusion point of material by 1-3 with reference to embodiments Method be described further:
Embodiment 1
Certain iron ore, Iron grade 55%;Reducing agent uses reduction coal, and its fixed carbon is 73%, and amount of allocating is the 25% of iron ore. Pelletizing is made after iron ore, reduction coal are well mixed and dries, the pelletizing after drying is calcined under reducing atmosphere, is metallized Pelletizing, its degree of metalization is 87%.Metallized pellet is added into molten point of stove, 1300 DEG C of fusion zone temperature, sedimentation by charging aperture 1500 DEG C of area's temperature, soaking time 80min.The Iron grade 97.72% of final molten point of iron, the iron content of slag is 2.94%.
Embodiment 2
Certain copper ashes, its Iron grade 40%;Certain reduction coal, fixed carbon content 76%;Certain lime stone, CaO contents 50%.Will Copper ashes:Reduction coal:Lime stone=100:22:10 proportioning is well mixed to be made pelletizing and dries, and the pelletizing after drying is gone back Original roasting, obtains metallized pellet, degree of metalization 80%.
Metallized pellet and its quick lime of quality 10% are put into fusion zone, fusion zone temperature 1400 by charging aperture DEG C, 1600 DEG C of decanting zone temperature, soaking time 50min.Final to melt the Iron grade 96.72% for dividing iron, the iron content of slag is 2.11%.
Embodiment 3
Certain nickel slag, its Iron grade 36%;Certain semi-coke, fixed carbon content 82%;Certain soda ash, Na2CO3Content 95%.By nickel Slag:Semi-coke:Soda ash=100:18:2 proportioning is well mixed to be made pelletizing and dries, and the pelletizing after drying carries out reduction roasting, Obtain metallized pellet, degree of metalization 83%.
Metallized pellet and its fluorite of quality 2% are put into rotary hearth furnace by charging aperture, 1500 DEG C of fusion zone temperature, 1800 DEG C of decanting zone temperature, soaking time 30min.The Iron grade 96.91% of final molten point of iron, the iron content of slag is 1.53%.
Simply a kind of embodiment of the present utility model, but protection domain of the present utility model is not limited to described above This.It can also be realized by following several ways.
1. double heat storage type combustion technology can be used in heat-storage type burner, both using high temperature air, also using high temperature Combustion gas, heat both is from high-temperature flue gas in smelting furnace fusion zone.
2. setting high temperature fume dust removal device before heat storage can be entered by high-temperature flue gas in smelting furnace, for protecting accumulation of heat Body, is not etched or blocks.
3. can be burnt using oxygen-enriched as combustion-supporting gas by heat-storage type burner, combustion gas use can be further reduced Amount, and improve melting in-furnace temperature.
4. melted in fusion zone using multigroup heat storage.

Claims (6)

1. a kind of system for handling ferrous material, it is characterised in that including:Melting furnace system (S500);Wherein, it is described to add Smelting furnace system (S500) includes furnace foundation (1), the refractory material furnace bottom (2) and body of heater being located on furnace foundation (1), should Body of heater includes side wall (3), partition wall (4) and furnace roof (5);The burner hearth of body of heater is divided into by the partition wall (4) extended downwardly from furnace roof (5) Fusion zone (15) and the part of decanting zone (16) two;Wherein, decanting zone (16) furnace bottom is less than fusion zone (15) furnace bottom, fusion zone (15) furnace bottom is designed using tilting, and the furnace bottom close to decanting zone (16) is relatively low;In fusion zone (15) away from decanting zone (16) The furnace roof of one end is provided with charging aperture (6);Heat-storage type burner is provided with relative both walls in fusion zone (15);In decanting zone (16) graphite electrode (14) through furnace roof (5) is provided with, the slag exit (7) for slag discharge is respectively equipped with decanting zone (16) And the thermal state metal discharged for thermal state metal exports (8).
2. system according to claim 1, it is characterised in that partition wall (4) lower end and refractory-lined ovens bottom are at regular intervals, For making material from fusion zone (15) inflow decanting zone (16).
3. system according to claim 1, it is characterised in that the furnace bottom angle of inclination of the fusion zone (15) 3-5 ° it Between.
4. system according to claim 1, it is characterised in that be located at decanting zone for the slag exit (7) of slag discharge (16) middle and upper part, the bottom of decanting zone (16) is located at for the thermal state metal outlet (8) that thermal state metal is discharged, and two outlets are equal Under fusion zone (15) furnace bottom least significant end.
5. system according to claim 1, it is characterised in that in side wall (3) and the built-in cooling Copper Water Jacket of furnace roof (5).
6. system according to claim 1, it is characterised in that in the relative both sides in described decanting zone (16) in symmetrical cloth Put two fusion zones (15).
CN201621195960.9U 2016-10-28 2016-10-28 A kind of system for handling ferrous material Active CN206385197U (en)

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