CN102277463A - Reduction furnace and device for producing direct reduced iron - Google Patents
Reduction furnace and device for producing direct reduced iron Download PDFInfo
- Publication number
- CN102277463A CN102277463A CN2011102377263A CN201110237726A CN102277463A CN 102277463 A CN102277463 A CN 102277463A CN 2011102377263 A CN2011102377263 A CN 2011102377263A CN 201110237726 A CN201110237726 A CN 201110237726A CN 102277463 A CN102277463 A CN 102277463A
- Authority
- CN
- China
- Prior art keywords
- reduction
- gas
- heater
- furnace
- air
- 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.)
- Granted
Links
Images
Classifications
-
- Y02W30/54—
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention provides a reduction furnace and a device for producing direct reduced iron. The device for producing the direct reduced iron comprises a coal gas generator, a reduction furnace connected with the coal gas generator, a flue gas dust collector connected with the reduction furnace, a cooling heat exchanger, a magnetic separator, a crushing machine and a screening machine, wherein the reduction furnace comprises a furnace body which is provided with a coal gas and air spraying inlet and a flue gas outlet, in which a combustion chamber is formed and of which the inner wall is provided with a refractory thermal insulation layer. The reduction furnace is characterized in that: a sealing reduction tank in which a cavity is formed is arranged in the combustion chamber of the furnace body, both ends of the sealing reduction tank pass through the wall of the furnace body and are arranged outside the furnace respectively, end covers are arranged at two external ports of the sealing reduction tank respectively, and one of the end covers is provided with a vent hole. Materials cannot be crushed in the reduction process, so the problems that a furnace lining is damaged, accidents are caused, the speed of reduction reaction is reduced, the energy consumption is increased and the like because the materials are crushed and easily molten and bonded in the reduction process are completely solved; meanwhile, reducing gas can be recycled, the environment is not polluted, sulfur is also recovered, and the comprehensive energy-saving effect is remarkable.
Description
Technical field
The present invention relates to a kind of reduction furnace, relate in particular to the coal-based direct reduction iron production equipment that comprises reduction furnace, belong to direct-reduced iron production unit technical field.
Background technology
The production of existing direct-reduced iron mainly is divided into gas base method and coal-based method.Wherein adopting coal-based method to produce direct-reduced iron and can make scale on the output, therefore is the at first method of producing direct-reduced iron.The production technique of coal-based method direct-reduced iron and equipment mainly contain following several:
1, revolution cellar for storing things production technique: revolution cellar for storing things technology is the main flow technology that coal-based method direct-reduced iron is produced at present.Krupp process (Krupp-CODIR) and Lurgi process (SL/RN), the Nasuh Akar method (ACCAR) of India, Xi Erfa (Si 11), terraced Di Erfa (TDR), and the Dai Weifa of Britain (DRC) or the like that Germany is arranged.Wherein, the CODIR method of Germany is the typical case the most; in coal-based method direct-reduced iron, occupied critical role; its advantage is as follows: product goes out the cellar for storing things after magnetic separation can improve the grade of iron; quality product is better; become one of clean source of iron of electrosmelting high-quality steel; can be continuous; stably carry out large-scale production; equipment operation rate is higher, have comparatively outstanding advantage in the technology of various revolutions cellar for storing things, and technology reaches its maturity; but the shortcoming and the deficiency of its existence have: furnace charge is very easily made broken when rotating with the cellar for storing things body; thereby regular meeting damages furnace lining because of powder and coal ash stick on the body of cellar for storing things and form " ring formation ", causes the accident, and makes operating rate decline; be subjected to the influence of " ring formation " simultaneously; can cause reduction temperature on the low side, top temperature can only reach about 1100 ℃, also can influence reduction rate in addition; and ature of coal requires too high; require the ash fusion point of coal must be higher than 1280 ℃, otherwise can continue " ring formation ", influence the throughput of single device.China has built up and the revolution cellar for storing things technology that comes into operation has three kinds; Single stage method, two step method and cold bound pellet method.Single stage method is earlier the iron ore concentrate of fine grinding to be made ball, dry on the drying grate, directly send into the revolution cellar for storing things after being preheating to 900 ℃ and carry out fixed and reduction, all process steps is finished on a streamline continuously.Two step method is earlier the iron ore concentrate of fine grinding to be made ball, makes acid pellet behind 1300 ℃ high temperature oxidation roasting, sends into the revolution cellar for storing things again and reduces, and makes finished product.The cold bound pellet method is to add a small amount of compound binding agent to make ball in fine powder of magnetite, behind drying and consolidating under 200 ℃ the low temperature, sends into the revolution cellar for storing things again and reduces, and has omitted the process of high-temperature roasting oxidation concretion.
2, rotary hearth furnace production technique: rotary hearth furnace is because its speed of response is fast, plurality of advantages such as adaptability to raw material is strong, be rapidly developed in recent years, rotary hearth furnace mainly contains these three kinds of Fastmet, Inmeto, Comwet, what wherein mechanize, level of automation were higher is the Fastmet method, have advanced person, economy, advantage reliably, the direct-reduced iron method that develops the sixties by U.S. Midrex direct-reduced iron company and Japanese kobe steel.Its advantage is: can make the ore deposit in the raw material, coal dust is combined closely, at high temperature only need 10-20min to get final product fast restore, with short production cycle, raw material does not move at furnace bottom, can move ahead with furnace bottom, event can not made broken, to the ore deposit, coal dust ball requirement of strength is not high, the capacity usage ratio height, reduzate C0 emits a large amount of heat energy through right burning of secondary, this heat energy is equivalent to half (being reported as three minutes two abroad) of aggregate supply heat, the detrimental impurity (zinc that contains in the raw material, plumbous, arsenic) can be partly in rotary hearth furnace or most volatilization enter in the flue gas, help from flue gas, obtaining reclaiming, in the stove is little negative pressure system, no flue gas releases, no industrial pollution water, S0 in the flue gas
2Quantity discharged is significantly less than agglomerate, and cost of investment is lower than equal production-scale revolution cellar for storing things production technique.Its shortcoming is: rotary hearth furnace product ferrous grade low (TFe＜85%), sulfur-bearing height (sulphur O.1～O.2%), product are difficult to directly as the STEELMAKING PRODUCTION raw material, can only be as the little content of starting materials of blast furnace ironmaking, promptly when add-on hour, can improve furnace processor, reduce coke ratio, but when add-on is big, may exert an influence to blast-furnace smelting, the equipment operation parts are many in addition, and the running maintenance difficulty is big, and the quality of product and stability remain to be investigated.In a word, the application of rotary hearth furnace reduction device just further changes the general layout that China's direct-reduced iron is produced, and presents good greatly development upsurge.
3, cellar for storing things, tunnel production technique: domestic except that adopting revolution cellar for storing things production direct-reduced iron, also adopt the cellar for storing things, tunnel to produce direct-reduced iron, plan is built more than 100 and is turned round the cellar for storing things, and annual production reaches 4,000,000 tons, and it is existing that oneself builds up 70, and reduced iron output is 300,000 tons.Cellar for storing things, tunnel process using powdered iron ore is reduced with the mode of going back the raw coal indirect heating, its shortcoming is: thermo-efficiency is low, energy consumption is high, direct-reduced iron per ton will consume the reduction coal of 500-650Kg, also to consume the heating coal of 450-550Kg, production cycle long (48-76h), it is seriously polluted that (solid waste such as reduction coal ash, useless reduction jar are many, dust is many), unstable product quality, unit throughput are difficult to enlarge, therefore, cellar for storing things, tunnel technology is not the direction of China's direct-reduced iron development from now on.
Summary of the invention
All deficiencies at above-mentioned prior art exists the invention provides a kind of iron transformation efficiency height, the reduction furnace that coal consumption is low.
Another object of the present invention is to provide a kind of cleaning type direct-reduced iron production equipment that comprises reduction furnace.
The present invention is to provide a kind of like this reduction furnace, comprise and establish combustion gas on it, the air entrance, exhanst gas outlet, establish combustion chamber in it, its inwall is established the body of heater of fire resistant heat preserving thermofin, it is characterized in that being provided with in the body of heater combustion chamber sealing reduction jar of band cavity in it, and the two ends of sealing reduction jar are passed furnace body wall respectively and are placed outside the stove, and establish end cap in two external port of sealing reduction jar respectively, wherein an end cap is provided with venting hole, so that material to be restored and reductive agent are put into the cavity that seals the reduction jar, and after covering two end cap, combustion gas is sprayed into the intravital combustion chamber internal combustion of stove through spout, replenish combustion air simultaneously, so that a sealing reduction jar interior material is added thermal reduction.
Described body of heater is made as right cylinder, perhaps be made as polygonal cylinder, combustion gas, air entrance are located at the body of heater middle and lower part, and link to each other with gas supply pipe, the air delivery pipe of belt controling valve on it respectively, exhanst gas outlet is located at upper of furnace body, and link to each other with the flue gas delivery pipe of belt controling valve on it, with delivery of fuel gas in stove, combustion air, and the flue gas that produces that will burn is sent.
Described body of heater is made as the body of heater of a plurality of parallel connections, the combustion gas of each body of heater, air entrance respectively by the combustion gas of belt controling valve on it be in charge of, air is in charge of links to each other with corresponding combustion gas house steward, air main, exhanst gas outlet is in charge of with the flue gas house steward by the flue gas of belt controling valve on it and is linked to each other, with by corresponding combustion gas house steward, air main delivery of fuel gas, combustion air in each body of heater, and the flue gas that each body of heater internal combustion produces sent through the flue gas house steward.
Described sealing reduction jar vertically is located in the body of heater combustion chamber, its upper/lower terminal passes the upper and lower wall of body of heater respectively and places outside the stove, and establish upper and lower end cap in upper and lower two external port of sealing reduction jar respectively, wherein upper end cover is provided with venting hole, and link to each other with the reducing gas transfer lime of belt controling valve on it, so that recycle reducing gas.
Described vertical sealing reduction jar is provided with a plurality of, and be located in the body of heater combustion chamber at interval, venting hole on its upper end cover, reducing gas by belt controling valve on it is carried to be in charge of with the reducing gas delivery manifold and is linked to each other, be pooled among the house steward so that each sealing reduction jar reducing gas that produces is carried to be in charge of through reducing gas separately, recycle with convenient.
The pipeline section that is positioned at body of heater one side of described air main places the flue gas house steward, this pipeline section is provided with air and is in charge of, air is in charge of and is passed that the flue gas house steward stretches out and combustion gas, the air entrance corresponding with body of heater links to each other, the end of going into of this pipeline section passes the flue gas house steward and stretches out and link to each other with air main, after utilizing fume afterheat to add warm air, it is right to send into the stove wife again, keeps temperature-resistant in the stove simultaneously, prevent that the energy consumption brought because of cooling from increasing, and to the influence of reduction reaction.
The present invention is to provide a kind of like this direct-reduced iron production equipment that comprises reduction furnace, comprise coal-gas producer, the reduction furnace that links to each other with coal-gas producer, the smoke duster that links to each other with reduction furnace, also comprise cooling heat exchanger, magnetic separator, crusher, sieve apparatus, wherein said reduction furnace comprises establishes coal gas on it, air entrance and exhanst gas outlet, establish combustion chamber in it, its inwall is established the body of heater of fire resistant heat preserving thermofin, it is characterized in that being provided with in the body of heater combustion chamber sealing reduction jar of band cavity in it, and the two ends of sealing reduction jar are passed furnace body wall respectively and are placed outside the stove, and establish end cap in two external port of sealing reduction jar respectively, wherein an end cap is provided with venting hole, so that material to be restored and reductive agent are put into the cavity that seals the reduction jar, and after covering two end cap, coal gas that coal-gas producer is produced and air mixed are after combustion gas, the air entrance sprays into the intravital combustion chamber internal combustion of stove, so that a sealing reduction jar interior material is added thermal reduction, the sealing reduction jar venting hole of the interior reducing gas that produces on end cap discharged, the flue gas that produces in body of heater combustion chamber emptying after outlet send smoke duster to handle, reclaim the sulphur in the flue gas simultaneously, after the sealing reduction jar interior material reduction, after discharging, port send the cooling heat exchanger cooling, reclaim heat energy simultaneously, cooled material is after crusher in crushing, magneticly elect reduced iron through magnetic separator again, material after the magnetic separation sieves through sieve apparatus, the thick coke powder reuse that must sieve, and undersized impurity send scrap yard.
Coal gas on the described body of heater, the air entrance links to each other with coal-gas producer by the gas conveying tube of belt controling valve on it, air delivery pipe by belt controling valve on it links to each other with blower fan simultaneously, exhanst gas outlet links to each other with smoke duster by the flue gas delivery pipe of belt controling valve on it, deliver to body of heater coal gas with the coal gas that coal-gas producer is produced through transfer lime, spray into the stove internal combustion after air entrance and the air mixed sent here with air delivery pipe, and, reclaim the sulphur in the flue gas simultaneously with flue gas emptying after transfer lime is delivered to the smoke duster dedusting that the stove internal combustion produces.
Described cooling heat exchanger is positioned at sealing reduction jar below, this cooling heat exchanger comprises the chassis of Tape movement wheel, be located at its upper port material tube with cover on the chassis, be located at the be filled with water cooling cylinder or the water spray cooling cylinder of material tube periphery, the inwall of cooling cylinder of wherein spraying water is interval with annular water-supply pipe, sprinkler head is set on the annular water-supply pipe at interval, so that it is mobile trolley used to the sealing reduction jar below of reducing after finishing, open the lower end cover of sealing reduction jar below and the lid of material tube upper port, close the lid after making the reduction material fall into the material tube, by the water-cooled that the material drum outer wall is carried out the reduction heat material in the material tube is cooled off, the material that prevents from simultaneously to reduce is oxidized.
Described smoke duster, magnetic separator, crusher, sieve apparatus are conventional equipment.
The present invention compared with prior art has following advantage and effect: adopt such scheme, make a sealing reduction jar interior material can not make broken, and it is broken because of making in reduction process thoroughly to have solved material, easily fusion, bond and the damage furnace lining, cause the accident, and reduction reaction speed is reduced, increase problems such as energy consumption, by heating from a sealing reduction jar outside, direct reduction reactor can be carried out smoothly, and the transformation efficiency of gained reduced iron reaches more than 98%, and reduced iron per ton on average consumes the mark coal only for 480Kg, and can effectively control in the reduced iron carbon content in scope O.1～0.25%, the recyclable utilization of reducing gas simultaneously, flue gas is emptying again after dedusting, and reclaims the sulphur in the flue gas synchronously, both helped cleaner production, free from environmental pollution, reclaimed resource sulphur again simultaneously, the synthesis energy saving effect is remarkable.
Description of drawings
Fig. 1 is a reduction furnace structural representation of the present invention;
Fig. 2 is the sectional drawing of overlooking of Fig. 1;
Fig. 3 looks sectional drawing for the left side of Fig. 1;
Fig. 4 is a direct-reduced iron production equipment structural representation of the present invention;
Fig. 5 be among Fig. 4 cooling heat exchanger A to figure.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further.
Reduction furnace provided by the invention comprises establishes combustion gas, air entrance 6, exhanst gas outlet 7 on it, establish combustion chamber 17 in it, its inwall is established the body of heater 1 of fire resistant heat preserving thermofin 2, the sealing reduction jar 16 of band cavity 19 in it wherein is set in body of heater 1 combustion chamber 17, and the two ends of sealing reduction jar 16 are passed body of heater 1 wall respectively and are placed outside the stove, and establish end cap 15,18 in two external port of sealing reduction jar 16 respectively, end cap 15 wherein is provided with venting hole 14; Described body of heater 1 is made as the rectangular cylinder of a plurality of parallel connections, combustion gas, air entrance 6 is located at the middle and lower part of body of heater 1, combustion gas, air entrance 6 is in charge of 4 by the combustion gas of belt controling valve on it and is linked to each other with combustion gas house steward 3, combustion gas house steward 3 input terminuss link to each other with gas furnace, combustion gas simultaneously, air entrance 6 also is in charge of 5 by the air of belt controling valve on it and is linked to each other with air main 10, with by combustion gas house steward 3, air main 10 is delivery of fuel gas in each body of heater 1, combustion air, exhanst gas outlet 7 is located at the top of body of heater 1, and by belt controling valve on it or not the flue gas of belt controling valve be in charge of 8 and link to each other with flue gas house steward 9, send through flue gas house steward 9 with the flue gas that each body of heater 1 internal combustion is produced; Described sealing reduction jar 16 is provided with a plurality of, and the compartment of terrain vertically is located in body of heater 1 combustion chamber 17, the upper/lower terminal of each sealing reduction jar 16 passes body of heater 1 upper and lower wall respectively and places outside the stove, and establish upper end cover 15, lower end cover 18 in upper and lower two external port of each sealing reduction jar 16 respectively, wherein upper end cover 15 is provided with venting hole 14, the reducing gas of each venting hole 14 by belt controling valve on it carried and is in charge of 13 and links to each other with reducing gas delivery manifold 12, with by reducing gas delivery manifold 12 recycling reducing gas; The pipeline section 10 that is positioned at body of heater one side of described air main places flue gas house steward 9, this pipeline section 10 is provided with air and is in charge of 5, air is in charge of 5 and is passed that flue gas house steward 9 stretches out and the combustion gas corresponding with body of heater 1, air entrance 6 links to each other, the end of going into of this pipeline section 10 passes flue gas house steward 9 and stretches out and link to each other with air main 11, air main 11 input terminuss link to each other with blower fan 20, after utilizing fume afterheat to add warm air, it is right to send into the stove wife again, keep temperature-resistant in the stove simultaneously, prevent that the energy consumption of bringing because of cooling from increasing, and to the influence of reduction reaction, as Fig. 1, Fig. 2, Fig. 3.
Direct-reduced iron production equipment provided by the invention, comprise conventional coal-gas producer 21, the reduction furnace 1 that links to each other with coal-gas producer 21 by coal gas delivery manifold 3, the conventional smoke duster 22 that links to each other with reduction furnace 1, also comprise cooling heat exchanger 26, conventional crusher 27, magnetic separator 28 and sieve apparatus 29, wherein said reduction furnace 1 comprises establishes coal gas on it, air entrance 6 and exhanst gas outlet 7, establish combustion chamber 17 in it, its inwall is established the body of heater 1 of fire resistant heat preserving thermofin 2, the sealing reduction jar 16 of band cavity 19 in it is set in body of heater 1 combustion chamber 17, and the two ends of sealing reduction jar 16 are passed body of heater 1 wall respectively and are placed outside the stove, and establish end cap 15 in two external port of sealing reduction jar 16 respectively, 18, end cap 15 wherein is provided with venting hole 14; Each coal gas on the described body of heater 1, air entrance 6 passes through the gas manifold 4 of belt controling valve on it respectively, gas main 3 links to each other with coal-gas producer 21, be in charge of 5 by the air of belt controling valve on it simultaneously, air main 10,11 link to each other with blower fan 20, exhanst gas outlet 7 is in charge of 8 by the flue gas of belt controling valve on it, flue gas house steward 9 links to each other with smoke duster 22, the smoke outlet of smoke duster 22 links to each other with chimney 23 by flue, with the flue gas emptying after dedusting is up to standard, the dust-exhausting port of smoke duster 22 links to each other with acid-base neutralisation pond 24 by pipeline, acid-base neutralisation pond 24 is with solid, liquid separate tank 25 links to each other, with the sulphur in the flue gas is converted into sulfuric acid send in the neutralization tank 24 with alkali in and after send into solid, in the liquid separate tank 25, reclaim sulphur after the sedimentation; Described cooling heat exchanger 26 is positioned at sealing reduction jar 16 belows, this cooling heat exchanger 26 comprises the chassis 262 of Tape movement wheel 261, be located at the material tube 266 of its upper port with cover 267 on the chassis 262, be located at the water spray cooling cylinder 265 of material tube 266 peripheries, the inwall of cooling cylinder 265 of wherein spraying water is interval with annular water-supply pipe 264, sprinkler head 263 is set on the annular water-supply pipe 264 at interval, so that mobile trolley used 262 sealing reduction jar 16 belows after finishing to reduction, open the lower end cover 18 of sealing reduction jar 16 belows and the lid 267 of material tube 266 upper port, close the lid 267 after making the reduction material fall into material tube 266, by the water-cooled that material tube 266 outer walls are carried out the reduction heat material in the material tube 266 is cooled off, the material that prevents from simultaneously to reduce is oxidized, as Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5.
Working process is: material to be restored and reductive agent are put into the cavity 19 of sealing reduction jar 16, and cover two end cap 15, after 18, coal gas that coal-gas producer 21 is produced and air mixed are after combustion gas, air entrance 6 sprays into combustion chamber 17 internal combustion in the body of heater 1, so that sealing reduction jar 16 interior materials are added thermal reduction, the sealing reduction jar 16 interior venting holes 14 of reducing gas on end cap 15 that produce, reducing gas is carried and is in charge of 13, reducing gas house steward 12 delivers to post-order process equipment, to recycle reducing gas, the flue gas that produces in body of heater 1 combustion chamber 17 is through exhanst gas outlet 7, flue gas is in charge of 8, flue gas house steward 9 send smoke duster 22 to handle the back emptying, reclaim the sulphur in the flue gas simultaneously, simultaneously by the flue gas house steward 9 interior air delivery manifold sections 10 that are provided with, to mixing with coal gas again after the air heating and spraying in the body of heater 1, to make full use of fume afterheat, cut down the consumption of energy to greatest extent, after sealing reduction jar 16 interior materials reduce, open lower end cover 18 and fall into cooling heat exchanger 26 coolings that seal reduction jar 16 belows, afterwards after crusher 27 fragmentations, magneticly elect reduced iron through magnetic separator 28 again, material after the magnetic separation is through sieve apparatus 29 screenings, the thick coke powder reuse that must sieve, and undersized impurity send scrap yard.
Claims (9)
1. reduction furnace, comprise and establish combustion gas, air entrance, exhanst gas outlet on it, establish combustion chamber in it, its inwall is established the body of heater of fire resistant heat preserving thermofin, it is characterized in that being provided with in the body of heater combustion chamber sealing reduction jar of band cavity in it, and the two ends that seal the reduction jar are passed furnace body wall respectively and are placed outside the stove, and establish end cap in two external port of sealing reduction jar respectively, and wherein an end cap is provided with venting hole.
2. reduction furnace according to claim 1, it is characterized in that described body of heater is made as right cylinder, perhaps be made as polygonal cylinder, combustion gas, air entrance are located at the body of heater middle and lower part, and link to each other with gas supply pipe, the air delivery pipe of belt controling valve on it respectively, exhanst gas outlet is located at upper of furnace body, and links to each other with the flue gas delivery pipe of belt controling valve on it.
3. reduction furnace according to claim 1, it is characterized in that described body of heater is made as the body of heater of a plurality of parallel connections, the combustion gas of each body of heater, air entrance respectively by the combustion gas of belt controling valve on it be in charge of, air is in charge of links to each other with corresponding combustion gas house steward, air main, exhanst gas outlet is in charge of with the flue gas house steward by the flue gas of belt controling valve on it and is linked to each other.
4. reduction furnace according to claim 1, it is characterized in that described sealing reduction jar vertically is located in the body of heater combustion chamber, its upper/lower terminal passes the upper and lower wall of body of heater respectively and places outside the stove, and establish upper and lower end cap in upper and lower two external port of sealing reduction jar respectively, wherein upper end cover is provided with venting hole, and links to each other with the reducing gas transfer lime of belt controling valve on it.
5. reduction furnace according to claim 4, it is characterized in that described vertical sealing reduction jar is provided with a plurality of, and be located in the body of heater combustion chamber at interval, the venting hole on the upper end cover of each vertical sealing reduction jar is carried to be in charge of with the reducing gas delivery manifold by the reducing gas of belt controling valve on it and is linked to each other.
6. reduction furnace according to claim 3, the pipeline section that is positioned at body of heater one side that it is characterized in that described air main places the flue gas house steward, this pipeline section is provided with air and is in charge of, air is in charge of and is passed that the flue gas house steward stretches out and combustion gas, the air entrance corresponding with body of heater links to each other, and the end of going into of this pipeline section passes the flue gas house steward and stretches out and link to each other with air main.
7. direct-reduced iron production equipment, comprise coal-gas producer, the reduction furnace that links to each other with coal-gas producer, the smoke duster that links to each other with reduction furnace, also comprise cooling heat exchanger, magnetic separator, crusher, sieve apparatus, wherein said reduction furnace comprises establishes coal gas on it, air entrance and exhanst gas outlet, establish combustion chamber in it, its inwall is established the body of heater of fire resistant heat preserving thermofin, it is characterized in that being provided with in the body of heater combustion chamber sealing reduction jar of band cavity in it, and the two ends that seal the reduction jar are passed furnace body wall respectively and are placed outside the stove, and establish end cap in two external port of sealing reduction jar respectively, and wherein an end cap is provided with venting hole.
8. direct-reduced iron production equipment according to claim 7, it is characterized in that coal gas, air entrance on the described body of heater link to each other with coal-gas producer by the gas conveying tube of belt controling valve on it, air delivery pipe by belt controling valve on it links to each other with blower fan simultaneously, and exhanst gas outlet links to each other with smoke duster by the flue gas delivery pipe of belt controling valve on it.
9. direct-reduced iron production equipment according to claim 7, it is characterized in that described cooling heat exchanger is positioned at sealing reduction jar below, this cooling heat exchanger comprises the chassis of Tape movement wheel, be located at its upper port material tube with cover on the chassis, be located at the be filled with water cooling cylinder or the water spray cooling cylinder of material tube periphery, the inwall of cooling cylinder of wherein spraying water is interval with annular water-supply pipe, and sprinkler head is set on the annular water-supply pipe at interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102377263A CN102277463B (en) | 2011-08-18 | 2011-08-18 | Reduction furnace and device for producing direct reduced iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102377263A CN102277463B (en) | 2011-08-18 | 2011-08-18 | Reduction furnace and device for producing direct reduced iron |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102277463A true CN102277463A (en) | 2011-12-14 |
| CN102277463B CN102277463B (en) | 2013-06-19 |
Family
ID=45103190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102377263A Expired - Fee Related CN102277463B (en) | 2011-08-18 | 2011-08-18 | Reduction furnace and device for producing direct reduced iron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102277463B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103131816A (en) * | 2013-03-25 | 2013-06-05 | 李乾宽 | Method for producing spongy iron through dual-based reduction and special chamber type smelting vertical furnace therefor |
| CN103602771A (en) * | 2013-11-19 | 2014-02-26 | 济南增元冶金科技有限公司 | Local slope type reduction ironmaking furnace and process |
| CN104630404A (en) * | 2015-03-10 | 2015-05-20 | 中冶南方工程技术有限公司 | QDF (quiescent direct furnace) direct reduction technology |
| CN105441620A (en) * | 2016-01-05 | 2016-03-30 | 李建涛 | Coal-based direct reduction furnace and reduction method |
| CN106288820A (en) * | 2015-06-05 | 2017-01-04 | 江苏志远节能炉业设备有限公司 | Reduction furnace reduction section automatically controls water-adding system |
| CN106871108A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨市三和佳美科技发展有限公司 | Environmentally friendly coal-turned-gas boiler system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2254085Y (en) * | 1996-03-15 | 1997-05-14 | 冶金工业部北京冶金设备研究院 | Tank type furnace for producing sponge iron by direct reduction |
| CN1249350A (en) * | 1998-09-28 | 2000-04-05 | 冶金工业部北京冶金设备研究院 | Technology for directly reducing iron with coal base in pot furnace |
| CN2534538Y (en) * | 2001-11-13 | 2003-02-05 | 李令杰 | Eight-chamber nine layer high-temperature roasting furnace |
| CN201166513Y (en) * | 2007-10-25 | 2008-12-17 | 李志忠 | Coal base direct-reduced iron external heating type high furnace |
| CN201520775U (en) * | 2009-05-18 | 2010-07-07 | 郑州永通特钢有限公司 | Direct reduction process pot furnace device |
| CN202201915U (en) * | 2011-08-18 | 2012-04-25 | 永仁县宏宇工贸有限公司 | Reduction furnace and directly reduced iron production device |
-
2011
- 2011-08-18 CN CN2011102377263A patent/CN102277463B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2254085Y (en) * | 1996-03-15 | 1997-05-14 | 冶金工业部北京冶金设备研究院 | Tank type furnace for producing sponge iron by direct reduction |
| CN1249350A (en) * | 1998-09-28 | 2000-04-05 | 冶金工业部北京冶金设备研究院 | Technology for directly reducing iron with coal base in pot furnace |
| CN2534538Y (en) * | 2001-11-13 | 2003-02-05 | 李令杰 | Eight-chamber nine layer high-temperature roasting furnace |
| CN201166513Y (en) * | 2007-10-25 | 2008-12-17 | 李志忠 | Coal base direct-reduced iron external heating type high furnace |
| CN201520775U (en) * | 2009-05-18 | 2010-07-07 | 郑州永通特钢有限公司 | Direct reduction process pot furnace device |
| CN202201915U (en) * | 2011-08-18 | 2012-04-25 | 永仁县宏宇工贸有限公司 | Reduction furnace and directly reduced iron production device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103131816A (en) * | 2013-03-25 | 2013-06-05 | 李乾宽 | Method for producing spongy iron through dual-based reduction and special chamber type smelting vertical furnace therefor |
| CN103131816B (en) * | 2013-03-25 | 2014-08-06 | 李乾宽 | Method for producing spongy iron through dual-based reduction and special chamber type smelting vertical furnace therefor |
| CN103602771A (en) * | 2013-11-19 | 2014-02-26 | 济南增元冶金科技有限公司 | Local slope type reduction ironmaking furnace and process |
| CN103602771B (en) * | 2013-11-19 | 2015-04-08 | 山东大学 | Local slope type reduction ironmaking furnace and process |
| CN104630404A (en) * | 2015-03-10 | 2015-05-20 | 中冶南方工程技术有限公司 | QDF (quiescent direct furnace) direct reduction technology |
| CN106288820A (en) * | 2015-06-05 | 2017-01-04 | 江苏志远节能炉业设备有限公司 | Reduction furnace reduction section automatically controls water-adding system |
| CN106288820B (en) * | 2015-06-05 | 2018-06-12 | 孙荣华 | Reduction furnace reduction section automatically controls water-adding system |
| CN106871108A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨市三和佳美科技发展有限公司 | Environmentally friendly coal-turned-gas boiler system |
| CN105441620A (en) * | 2016-01-05 | 2016-03-30 | 李建涛 | Coal-based direct reduction furnace and reduction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102277463B (en) | 2013-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104911356B (en) | A kind of solid waste gas ash, the comprehensive recycling process of vanadium slag containing zinc-iron | |
| CN102277463B (en) | Reduction furnace and device for producing direct reduced iron | |
| CN104846209B (en) | A kind of system and method for step-by-step reduction recovery ferrum and coal gasification recovery waste heat from molten copper slag | |
| CN100463975C (en) | Production of sponge iron | |
| CN106564900B (en) | A kind of cooling calcium carbide powder technique processed of the molten state calcium carbide of clean and effective safety | |
| CN102061350A (en) | Short-process comprehensive red mud utilization method and equipment | |
| CN106282546B (en) | A kind of smoke gas circulating type prereduction sintering process | |
| CN206219613U (en) | A kind of dry type blast-furnace cement sensible heat recovery system | |
| CN105441687A (en) | Dust recycling process and system for iron and steel plant | |
| CN109306407B (en) | Device and method for treating and utilizing metallurgical zinc-containing dust | |
| CN109097588A (en) | A kind of device and method that iron content solid wastes recycling containing zinc utilizes | |
| CN209039549U (en) | A kind of device that iron content solid wastes recycling containing zinc utilizes | |
| CN105112577A (en) | Dry granulating blast furnace slag waste heat recovery device and blast furnace slag waste heat recovery method | |
| CN107091569A (en) | Rotary kiln and the polygenerations systeme that metal hydride is produced using the rotary kiln | |
| CN202201915U (en) | Reduction furnace and directly reduced iron production device | |
| CN107779534B (en) | Process for treating zinc-containing and iron dust and mud in iron and steel plant by shaft furnace method | |
| CN106191345A (en) | A kind of converter melts red slag heat recovering device and exhaust heat recovering method | |
| CN105331800A (en) | Reducing roasting process for low-grade high-iron manganese ore | |
| CN108754056A (en) | A kind of high density total oxygen short flow high efficiency cleaning iron-smelting process | |
| CN110127628A (en) | A kind of tank furnace formula vulcanized sodium industrialized production equipment and technique | |
| CN205999400U (en) | A kind of converter melts red slag heat recovering device | |
| CN108130426A (en) | Lead cadmia residual neat recovering system | |
| CN110343878B (en) | Energy-saving and environment-friendly production method of nickel-iron alloy | |
| CN210399936U (en) | Clean sintering system based on fuel preparation and roasting control | |
| CN110229939A (en) | A kind of non-burnt iron-smelting device of two sections of kiln processes |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20140818 |
|
| EXPY | Termination of patent right or utility model |