CN101805811B - Method and device for smelting iron by using pure-oxygen and hydrogen-rich gas - Google Patents
Method and device for smelting iron by using pure-oxygen and hydrogen-rich gas Download PDFInfo
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- CN101805811B CN101805811B CN2010101464433A CN201010146443A CN101805811B CN 101805811 B CN101805811 B CN 101805811B CN 2010101464433 A CN2010101464433 A CN 2010101464433A CN 201010146443 A CN201010146443 A CN 201010146443A CN 101805811 B CN101805811 B CN 101805811B
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- 239000007789 gas Substances 0.000 title claims abstract description 141
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 238000003723 Smelting Methods 0.000 title claims abstract description 88
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 48
- 239000001257 hydrogen Substances 0.000 title claims abstract description 39
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 39
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 18
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 title abstract description 6
- 239000000571 coke Substances 0.000 claims abstract description 84
- 239000002893 slag Substances 0.000 claims abstract description 64
- 239000000428 dust Substances 0.000 claims abstract description 58
- 238000005453 pelletization Methods 0.000 claims abstract description 46
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000001301 oxygen Substances 0.000 claims abstract description 41
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 41
- 238000005245 sintering Methods 0.000 claims abstract description 34
- 238000002347 injection Methods 0.000 claims abstract description 25
- 239000007924 injection Substances 0.000 claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 239000008188 pellet Substances 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000011084 recovery Methods 0.000 claims abstract description 7
- 239000003034 coal gas Substances 0.000 claims description 41
- 238000012546 transfer Methods 0.000 claims description 37
- 230000001172 regenerating effect Effects 0.000 claims description 27
- 238000005469 granulation Methods 0.000 claims description 22
- 230000003179 granulation Effects 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000010248 power generation Methods 0.000 claims description 17
- 239000007921 spray Substances 0.000 claims description 16
- 238000007908 dry granulation Methods 0.000 claims description 10
- 238000010304 firing Methods 0.000 claims description 9
- 238000010791 quenching Methods 0.000 claims description 9
- 230000000171 quenching effect Effects 0.000 claims description 9
- 230000002550 fecal effect Effects 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 8
- 238000000746 purification Methods 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 230000003139 buffering effect Effects 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 4
- 235000009508 confectionery Nutrition 0.000 claims description 3
- 238000006392 deoxygenation reaction Methods 0.000 claims description 3
- 239000003345 natural gas Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 230000009467 reduction Effects 0.000 abstract description 23
- 239000003245 coal Substances 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 8
- 239000002994 raw material Substances 0.000 abstract description 7
- 238000004134 energy conservation Methods 0.000 abstract description 5
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000010168 coupling process Methods 0.000 abstract description 4
- 238000005859 coupling reaction Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000007664 blowing Methods 0.000 abstract 1
- 238000003763 carbonization Methods 0.000 abstract 1
- 238000006722 reduction reaction Methods 0.000 description 28
- 230000002829 reductive effect Effects 0.000 description 10
- 238000004939 coking Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000001465 metallisation Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 3
- 235000011089 carbon dioxide Nutrition 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005255 carburizing Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to a method and a device for smelting iron by using a pure-oxygen and hydrogen-rich gas, which belong to the technical field of ironmaking and energy sources. The process for smelting iron by using a pure-oxygen and hydrogen-rich gas comprises the steps of: performing in-parallel coupling operation of coal carbonization, sintering, pelletizing and an iron-fining furnace; conveying and charging hot coke, agglomerate and pellets to the oxygen iron-fining furnace by conveying equipment and charging equipment at high temperature without cooling; and arranging an oxygen tuyere and a gas injection facility at the lower part of the furnace for blowing in oxygen and coke oven gas at a certain temperature towards the furnace to achieve the aims of energy conservation and emission reduction. The device comprises a raw material system, a stock gas system, a coke oven gas injection system, a dust injection system, a slag dry-method pelletizing and afterheat recovery system and an oxygen system. The method and the device have the advantages that: high-temperature furnace charges are adopted to enter the furnace directly, so that the investments of cooling equipment are saved, the layout is more compact, and the land resources and investments are saved; and the pure-oxygen and hydrogen-rich gas injection technology is adopted to achieve the effects of cleaner production, high efficiency, energy conservation, energy conservation and emission reduction.
Description
Technical field
The invention belongs to ironmaking and energy technology field, a kind of total oxygen hydrogen-rich gas iron smelting method and device thereof particularly are provided, realize the rich hydrogen total oxygen ironmaking of iron-smelting raw material hot delivery and hot charging and low-carbon (LC).
Background technology
Along with the continuous acceleration of modern industrialization process, the global energy mass consumption, CO2 emissions increases severely, and atmospheric pollution that is caused and Greenhouse effect have seriously threatened human global environment of depending on for existence.The CO2 emissions of China Steel industry is only second to electric power, building materials, occupies the 3rd.Therefore, the reduction of discharging of carbonic acid gas is the bounden weighty responsibility of iron and steel industry.It then is the primary goal of energy-saving and emission-reduction that energy consumption accounts for the ironmaking system of whole Iron and Steel Production total energy consumption more than 70%, but coking, sintering, pelletizing and the energy-saving and emission-reduction that each operation can accomplish under the existing processes technical qualification of smelting iron are very limited, therefore must have the innovation on the Technology could realize significantly energy-saving and emission-reduction.
The raw material of blast furnace ironmaking mainly comprises coke, agglomerate and pelletizing, and the furnace charge of existing blast furnace all is to pack at normal temperatures in the stove.The normal temperature furnace charge is convenient to transportation, preserves and is used, but raw material needs to drop to normal temperature by cooling apparatus from high temperature in process of production, also will reheat high temperature in the blast furnace of packing into, has both increased facility investment and occupation of land, has lost a large amount of heat energy again.
Red Jiao Wenduda 800-1200 ℃ of releasing of coke oven mainly at present adopts dry coke quenching and coke wet quenching dual mode that coke is cooled to normal temperature.No matter adopt the sort of type of cooling all can be, and cause the reduction of its intensity and yield rate because of coke produces the stress breakage under the acute variation of temperature.Be used for generating though dry coke quenching can reclaim the sensible heat of coke, energy recovery efficiency is lower; The quenching of coke quenching tower water spray is adopted in coke wet quenching, has wasted the sensible heat of coke fully, and has consumed great lot of water resources, causes certain environmental pollution.
Temperature is mainly cooled off by central cooler or belt-cooling machine at present at 800-1400 ℃ before high temperature sintering ore deposit and the pelletizing cooling, and its sensible heat produces low-pressure steam by waste heat boiler and is used, and energy recovery efficiency is also very low.
Blast furnace is being obtained good effect by high oxygen enrichment big coal injection aspect volume increase, Jie Jiao and the consumption reduction, when further raising of oxygen enrichment percentage and even pure oxygen smelting, can increase injecting coal quantity to greatest extent, reduce coke ratio, but the problem of bringing is the blast furnace gas quantity not sufficient, adds that cold burden goes into stove and cause upper temp low, influences the indirect reduction of coal gas, the proportion that causes directly reducing increases, and has increased the consumption of carbon element on the contrary.The problem of top shortage of heat, though can be by present popular technology thought, promptly being blown into coal gas of high temperature at restoration of lower stack solves, but want a certain amount of coal gas of additional combustion because there is the problem of analysing carbon in coal gas and adds heating gas in heat-processed, make this technology rest on the thought stage all the time.
The present invention is with coking, pelletizing and sintering and iron-smelting furnace coupling operation, coke with red heat, pelletizing and agglomerate are directly packed in the novel iron-smelting furnace, the employing total oxygen is smelted, the hydrogen-rich high temperature coke oven coal gas of jetting simultaneously in oxygen air port, bottom and shaft middle and lower part, both made full use of the sensible heat of iron-smelting furnace charge, the sensible heat that utilizes the High Temperature Furnaces Heating Apparatus strip to go into has again been eliminated the problem of the top shortage of heat that pure oxygen smelting causes, make iron-containing charge reach degree of metalization more than 70% by indirect reduction on top, made full use of the chemical energy of coal gas, reduce or eliminate the carbon element consumption that the direct reduction in bottom causes, realize the purpose of energy-saving and emission-reduction significantly.
Summary of the invention
A kind of total oxygen hydrogen-rich gas iron smelting method and device have been the object of the present invention is to provide, iron-smelting process and relative unit based on coking, sintering, pelletizing, iron-smelting furnace, adopt total oxygen and winding-up hydrogen-rich gas smelting technology, reach the effect of cleaner production, energy-efficient and environmental emission reduction.
The rich hydrogen iron-smelting process of total oxygen of the present invention is, with coking, sintering, pelletizing and iron-smelting furnace coupling operation, coke, agglomerate, pelletizing is without cooling, at high temperature pass through conveying and loading device hot delivery and hot charging in iron-smelting furnace, lower furnace establishes the oxygen air port and coal gas winding-up facility is blown into oxygen and the coke-oven gas with certain temperature in stove, the inflammable gas that also comprises coal and other kind, the stove middle and lower part also is blown into the coke-oven gas with certain temperature, the inflammable gas that also comprises other kind, with rich hydrogen coal combustible gas coke for replacing and coal, reach the target of energy-saving and emission-reduction.The high temperature high heating value gas that discharge on top is transferred to the coke-oven gas that sprays in the stove by heat regenerator with physics heat, also comprises the inflammable gas of other kind, uses for coke oven and pellet formation then.
Novel oxy-fuel hydrogen-rich gas iron-smelting process provided by the invention comprises the steps:
1, the ripe red heat coke of coke oven being produced is delivered in the high temperature coke transfer feed bin with the high temperature coke e Foerderanlage, the high temperature sintering ore deposit that sinter machine is produced is delivered in the high temperature sintering ore deposit transfer feed bin by the high temperature sintering ore deposit e Foerderanlage that seals, and the high temperature pelletizing that pellet firing machine is produced is delivered in the high temperature pelletizing transfer feed bin by the high temperature pelletizing e Foerderanlage that seals;
2, with above-mentioned transfer feed bin respectively as the buffering and the insulating container of pyritous coke, agglomerate and pelletizing, the high temperature furnace charge by the high temperature scale hooper by mixing ratio successively, in batches by the sealing the High Temperature Furnaces Heating Apparatus material conveying device send in the high temperature resistant no clock furnace roof, be distributed in the stove on request by high temperature resistant no clock furnace roof again;
3, utilize the buffering and the insulation effect of 3 transfer feed bins, the charging temperature of control coke is 100-1200 ℃, and the charging temperature of agglomerate is 100-1000 ℃, and the charging temperature of pelletizing is 100-1400 ℃;
4, iron-smelting furnace is provided with two exhaust outlets, i.e. the row of the going up coal gas air port of the following deoxygenation gas air port of bottom and middle and lower part.Be blown into the oxygen of 200-600 cubic meter/ton iron and the rich hydrogen inflammable gas of 20-300 cubic meter/ton iron preheating by the oxygen air port that is provided with in the iron-smelting furnace bottom, spray into the rich hydrogen inflammable gas of 100-600 cubic meter/ton iron preheating simultaneously in the above position of soft melt zone root, the middle and lower part of iron-smelting furnace, rich hydrogen inflammable gas can be coke-oven gas or Sweet natural gas, and the temperature that sprays into of rich hydrogen inflammable gas is controlled at 600-1200 ℃;
5, the gas temperature of furnace roof discharge is at 250-1200 ℃, at first by the dedusting of furnace roof high-temperature gas duster device, reclaim by the regenerative heat-exchange device of 4-6 sensible heat again coal gas, wherein 2-3 regenerative heat-exchange device is used for preheating and sprays into rich hydrogen inflammable gas in the stove from the oxygen air port, and 2-3 regenerative heat-exchange device is used for preheating and sprays into rich hydrogen inflammable gas in the stove from the above position of soft melt zone root in addition;
6, coal gas temperature after the heat exchange of 4-6 regenerative heat-exchange device of furnace roof discharge drops to below 200 ℃, and by 4-30 the meticulous dedusting of bag-type dust collector, clean gas is used for replacing coke oven and produces incendiary coke-oven gas and pelletizing and SINTERING PRODUCTION;
7, the stove dirt of furnace roof high-temperature gas duster device and 4-30 bag-type dust collector collection sprays in the iron-smelting furnace by the dust winding-up jar oxygen air port from iron-smelting furnace, eliminates dust pollution;
8, the high-temperature liquid state slag of iron-smelting furnace generation is by slag granulation and heat-exchanger rig granulation, and the slag sensible heat of recovery produces high pressure steam by boiler, unites the generating of driving combined power generation device with the high pressure gas that furnace roof is discharged.
The present invention adopts the furnace charge hot charging, has made full use of the heat energy of furnace charge, and the upper mass strip is in the reduction reaction temperature interval fully, and furnace charge reaches more than 70% by the indirect reduction degree of metalization on top; Adopt hot charging to smelt and combine, make the heat distribution in the stove rationally balanced with total oxygen; The slag sensible heat reclaims with the recovery of furnace roof overbottom pressure and combines, and unites the driving generator for electricity generation, has improved generating efficiency.
The device of total oxygen hydrogen-rich gas ironmaking of the present invention comprises: feed circuit, iron-smelting furnace, stock gas system, coke-oven gas injection system, dust injection system, slag dry granulation and residual neat recovering system, oxygen system.Feed circuit links to each other with iron-smelting furnace by high temperature resistant no clock furnace roof; the stock gas system links to each other with iron-smelting furnace by pipeline; the coke-oven gas injection system links to each other with iron-smelting furnace by pipeline; the dust injection system links to each other with iron-smelting furnace by pipeline; the slag dry granulation links to each other with iron-smelting furnace by the slag iron runner with residual neat recovering system, and oxygen system links to each other with iron-smelting furnace by pipeline.
Feed circuit is made up of coke oven, sinter machine, pellet firing machine, high temperature coke e Foerderanlage, high temperature sintering ore deposit e Foerderanlage, high temperature pelletizing e Foerderanlage, high temperature coke transfer feed bin, high temperature sintering ore deposit transfer feed bin, high temperature pelletizing transfer feed bin, high temperature coke scale hooper, high temperature sintering ore deposit scale hooper, high temperature pelletizing scale hooper, High Temperature Furnaces Heating Apparatus material conveying device and high temperature resistant no clock furnace roof;
Coke oven links to each other with high temperature coke transfer feed bin by the high temperature coke e Foerderanlage, sinter machine links to each other with high temperature sintering ore deposit transfer feed bin by high temperature sintering ore deposit e Foerderanlage, pellet firing machine links to each other with high temperature pelletizing transfer feed bin by high temperature pelletizing e Foerderanlage, the high temperature scale hooper with link to each other by pipeline or closed chute with the transfer feed bin of corresponding coke, agglomerate and pelletizing respectively, the high temperature scale hooper links to each other with High Temperature Furnaces Heating Apparatus material conveying device pipeline or closed chute, and the High Temperature Furnaces Heating Apparatus material conveying device links to each other with iron-smelting furnace by high temperature resistant no clock furnace roof.
The stock gas system is made up of furnace roof high-temperature gas duster device, 4～6 regenerative heat-exchange devices, 4～30 bag-type dust collectors, combined power generation device, gas storage cabinets.Iron-smelting furnace links to each other with furnace roof high-temperature gas duster device by pipeline, and furnace roof high-temperature gas duster device, regenerative heat-exchange device, bag-type dust collector, combined power generation device, gas storage cabinet link to each other by pipeline order successively.
The coke-oven gas injection system is made up of coke oven, coke oven gas purification system, gas pressure blower, regenerative heat-exchange device, winding-up coal gas temperature-adjusting device.Coke oven links to each other with the coke oven gas purification system by pipeline, coal gas after purifying divides two-way, the pipeline of leading up to links to each other with gas pressure blower, regenerative heat-exchange device, winding-up coal gas temperature-adjusting device, iron-smelting furnace successively in proper order, and another road links to each other with gas pressure blower, regenerative heat-exchange device, iron-smelting furnace by pipeline order successively.
The dust injection system is made up of furnace roof high-temperature gas duster device, bag-type dust collector, dust winding-up jar.Furnace roof high-temperature gas duster device links to each other with dust winding-up jar by dust conveyer, and bag-type dust collector links to each other by dust conveyer and dust winding-up jar.Dust winding-up jar links to each other with iron-smelting furnace.
Slag dry granulation and residual neat recovering system comprise fecal iron separator, slag granulation and heat-exchanger rig, boiler, blower fan and combined power generation device.
Crossing trough by the effusive slag of iron-smelting furnace Tie Tong flows into and to be divided into slag liquid stream behind the fecal iron separator and molten iron flows; the molten iron trough of flowing through links to each other with the molten iron conveyer; slag liquid stream links to each other with heat-exchanger rig with slag granulation by slag runner; blower and pipeline links to each other with heat-exchanger rig with slag granulation; slag granulation links to each other with boiler by pipeline with heat-exchanger rig; boiler links to each other with combined power generation device by pipeline, and slag granulation links to each other with the slag conveyer by tremie pipe with heat-exchanger rig.
The regenerative heat-exchange device can also be a heat exchanging type heat exchanger except being heat regenerator.
Compared with prior art, the present invention has following advantage:
1, temperature is that 100-1200 ℃ coke, temperature is at 100-1000 ℃ agglomerate, heat group that temperature the is 100-1400 ℃ iron-smelting furnace of directly packing into, made full use of the sensible heat of raw material, both reduced the fluctuation of the material temperature of ironmaking operation, the investment of having saved the raw material cooling apparatus again.
Because coke without quenching, has been eliminated the environmental pollution that causes because of coke wet quenching, eliminated the stress breakage of the acute variation generation of coke Yin Wendu simultaneously, the intensity of coke is improved, M40 improves 3%-8%, and M10 reduces 0.3-0.8%, has reduced the generation of broken Jiao and breeze.
2, since raw material at high temperature pack in the stove, brought a large amount of physics heat into, press 800 ℃ of coke, agglomerate and pelletizings, ton iron consumption is respectively 0.3t, 1.28t and 0.32t calculates, the physics heat of bringing into can reach 1.59GJ, can remedy the top heat loss that iron-smelting furnace causes because of the coal gas quantity not sufficient when total oxygen is smelted.
Because the furnace charge hot charging is adopted on top, makes the whole temperature range that is in indirect reduction of iron-smelting furnace upper mass strip, make furnace charge just begin indirect reduction beginning in entering iron-smelting furnace, prolonged the time of reduction reaction relatively, improved indirect reduction.
3, be blown into from last row's coal gas air port and be preheating to 600-1100 ℃ of coke-oven gas, hydrogen-rich reducing gas is provided, improved the reduction potential of upper gas, improved top reductive dynamic conditions, the indirect reduction on top is fully developed, and furnace charge degree of metalization when entering the iron-smelting furnace bottom reaches more than 90%.Because the gaseous product of hydrogen reduction furnace charge is a water, therefore rich hydrogen reduction has also reduced CO
2Discharging.
4, traditional blast furnace adopts the hot blast air blast, and ton iron coal gas amount reaches 1600 cubic metres, wherein N
2Accounted for 1000 cubic metres, the present invention is blown into industrial oxygen from the oxygen air port of cupola well, has significantly reduced the coal gas generating capacity of cupola well, has reduced the gas permeability requirements to stock column.
Be blown into coke-oven gas simultaneously from cupola well, can utilize the methane cracking in the coke-oven gas, theoretical combustion temperature before the reduction air port, inherent hydrogen has improved the content of hydrogen in the cupola well coal gas in coal gas that cracking produces and the coke-oven gas, but hydrogen is at the direct reduction reactor of the indirect reduction part replaced C of bottom, reduce the heat that direct reduction reactor consumes, reached purpose energy-conservation, that save coke.The winding-up coke-oven gas replaces pulverized coal injection, has reduced the quantity of slag that has slag amount that coal powder fraction brings into and balance basicity to need the solvent of extra increase to bring because of a large amount of coal powder injections, can reduce a ton iron furnace quantity of slag, reaches purpose of energy saving.
5, the abundant development of iron-smelting furnace top indirect reduction, furnace charge degree of metalization before entering the melting range, bottom is reached more than 70%, except a spot of additional reduction, only need fusing and carburizing can finish iron manufacturing process basically at cupola well, because the high degree of metalization on top carries out carburization reaction in advance, also shortened the carburizing time of cupola well, the utilization coefficient of iron-smelting furnace can be significantly improved, and same heat size output can reach more than 1.5 times of conventional blast furnace.
6, lower boiling metals such as the K in the furnace charge, Na, Zn just are reduced into metal on top, outside coal gas of high temperature effusion stove, having reduced circulation accumulation, have reduced the dross phenomenon of furnace lining, do not have alkaline-earth metal powder separate out the ventilation property that has also improved stock column.
7, slag adopts dry granulation technology recovery waste heat wherein; the high pressure gas that produces steam and furnace roof by boiler is united driving TRT generating, has promptly made full use of the sensible heat of blast furnace slag, has saved water resources; the water saving of ton iron can reach more than the 0.5t, has improved the efficient of single coal gas TRT generating again.
The present invention adopts the high temperature furnace charge directly into stove coking, sintering, pelletizing and iron-smelting furnace coupling operation, has saved the investment of cooling apparatus, layout is compact more, both save land resources, saved investment again, can also reach the production effect of efficient, energy-conservation and environmental protection simultaneously.
Description of drawings
Fig. 1 is the structural representation of apparatus of the present invention.Wherein, High Temperature Furnaces Heating Apparatus material conveying device 1, high temperature resistant no clock furnace roof 2, iron-smelting furnace 3, furnace roof high-temperature gas duster device 4, combined power generation device 5, gas storage cabinet 6, dust ejection jar 7, gas pressure blower 8, gas pressure blower 9, winding-up coal gas temperature-adjusting device 10, dust conveyer 12, dust conveyer 13, fecal iron separator 14, slag granulation and heat-exchanger rig 15, boiler 16, blower fan 17, slag conveyer 18, molten iron conveyer 19.
Embodiment
The production process of total oxygen hydrogen-rich gas iron-smelting process is implemented as follows:
Ripe red Jiao that coke oven C1 releases is delivered in the high temperature coke transfer feed bin C3 by high temperature coke e Foerderanlage C2, the high temperature sintering ore deposit that sinter machine S1 produces is delivered in the high temperature sintering ore deposit transfer feed bin S3 by high temperature sintering ore deposit e Foerderanlage S2, the high temperature pelletizing that pellet firing machine P1 produces is delivered in the high temperature pelletizing transfer feed bin P3 by high temperature pelletizing e Foerderanlage P2, high temperature scale hooper C4 is set respectively under the transfer feed bin of three kinds of furnace charges, S4, P4, three kinds of furnace charges are added on the High Temperature Furnaces Heating Apparatus material conveying device 1 successively by proportioning, by High Temperature Furnaces Heating Apparatus material conveying device 1 the high temperature furnace charge is promoted in the high temperature resistant no clock furnace roof 2, furnace charge is distributed in the iron-smelting furnace 3 by the cloth requirement by high temperature resistant no clock furnace roof 2.
Described transfer feed bin C2, S2, P2 are the steel construction feed bin, the impact-resistant thermal insulation fire-resistant material of liner or lagging material+heat-resisting liner plate, and the feed bin inlet is established sealing cover, and its side towards feed bin is established lagging material.Utilize the buffering and the insulation effect of transfer feed bin, the coke temperature that may command enters iron-smelting furnace is 100-1200 ℃, and the agglomerate temperature is 100-1000 ℃, and the pelletizing temperature is 100-1400 ℃.
High Temperature Furnaces Heating Apparatus material conveying device 1 is the high temperature chain mat machine or the sealing dolly+skew bridge of sealing.
When furnace charge reached certain height in stove after, following row's oxygen air port began oxygen blast, sprayed into a certain proportion of rich hydrogen inflammable gas simultaneously, and hydrogen-rich inflammable gas can be coke-oven gas or Sweet natural gas; When charge level reached normal stockline in the stove, last row's coal gas air port was blown into the rich hydrogen inflammable gas of preheating.Hydrogen-rich inflammable gas is a coke-oven gas in this enforcement.
The coal gas of high temperature that discharge on top is through 4 dedustings of furnace roof high-temperature gas duster device, enter regenerative heat-exchange device H1 or H3 (H1 and H3 are used alternatingly) and H2 or H4 (H2 and H4 are used alternatingly) heat exchange then, gas temperature is dropped to below 200 ℃, enter bag-type dust collector F1, F2 again, F3, F4 carry out meticulous dedusting, coal gas after the dedusting enters combined power generation device 5 generatings, coal gas finally enters gas storage cabinet 6, uses for coal gas users such as coking, sintering and pellet formation.
The dedusting ash that furnace roof high-temperature gas duster device 4 produces regularly adds in the dust ejection jar 7 by dust conveyer 12, the dedusting ash that bag-type dust collector F1, F2, F3, F4 produce is regularly delivered in the dust winding-up jar 7 by dust conveyer 13, sprays in the stove by dust winding-up jar 7.
The coke-oven gas that coke oven C produces divides two-way to spray in the iron-smelting furnace 3 after device C5 purifies.One the tunnel through gas pressure blower 8 pressurizations, then by regenerative heat-exchange device H1 or H3 heat exchange (H1 and H3 are used alternatingly), temperature is elevated to 600-1100 ℃, again through 10 temperature adjustments of winding-up coal gas temperature-adjusting device, is sprayed into by last row's coal gas air port then and guarantees to spray into iron-smelting furnace 3.Winding-up coal gas temperature-adjusting device 10 is in order to guarantee that the coal gas that row's coal gas air port sprays into has the temperature that is complementary with processing requirement.Another road gas pressure blower 9 pressurizations then by regenerative heat-exchange device H2 or H4 (H2 and H4 are used alternatingly) heat exchange, are sprayed in the iron-smelting furnace 3 by the oxygen air port of arranging down again.
The iron mouth that iron-smelting furnace 3 bottoms are provided with is discharged slag and molten iron; separate through fecal iron separator 14; molten iron enters in the molten iron conveyer 19; slag then enters in slag granulation and the heat-exchanger rig 15; slag after the granulation heat exchange transports by slag conveyer 18; the wind that the waste heat of slag is blasted by blower fan 17 is brought boiler 16 into, produces high temperature and high pressure steam, unites with stock gas to drive combined power generation device 5.
The ironmaking of employing present embodiment, useful effect below desirable the getting:
1) the ironmaking process energy consumption reduces 10-50%;
2) molten iron output improves 50-200%;
3) economize the land resource, reduce construction investment;
4) CO
2Reduce discharging 15-40%;
5) new water consumption reduces more than 80%.
The device of total oxygen hydrogen-rich gas ironmaking of the present invention comprises: feed circuit, iron-smelting furnace, stock gas system, coke-oven gas injection system, dust injection system, slag dry granulation and residual neat recovering system, oxygen system.Feed circuit links to each other with iron-smelting furnace 3 by high temperature resistant no clock furnace roof 2; the stock gas system links to each other with iron-smelting furnace 3 by pipeline; the coke-oven gas injection system links to each other with iron-smelting furnace 3 by pipeline; the dust injection system links to each other with iron-smelting furnace 3 by pipeline; the slag dry granulation links to each other with iron-smelting furnace 3 by the slag iron runner with residual neat recovering system, and oxygen system 11 links to each other with iron-smelting furnace 3 by pipeline.
Feed circuit is made up of coke oven C1, sinter machine S1, pellet firing machine P1, high temperature coke e Foerderanlage C2, high temperature sintering ore deposit e Foerderanlage S2, high temperature pelletizing e Foerderanlage P2, high temperature coke transfer feed bin C3, high temperature sintering ore deposit transfer feed bin S3, high temperature pelletizing transfer feed bin P3, high temperature coke scale hooper C4, high temperature sintering ore deposit scale hooper S4, high temperature pelletizing scale hooper P4, High Temperature Furnaces Heating Apparatus material conveying device 1 and high temperature resistant no clock furnace roof 2;
Coke oven C1 links to each other with high temperature coke transfer feed bin C3 by high temperature coke e Foerderanlage C2, sinter machine S1 links to each other with high temperature sintering ore deposit transfer feed bin S3 by high temperature sintering ore deposit e Foerderanlage S2, pellet firing machine P1 links to each other with high temperature pelletizing transfer feed bin P3 by high temperature pelletizing e Foerderanlage P2, high temperature scale hooper C4, S4 and P4 respectively with corresponding coke, the transfer feed bin of agglomerate and pelletizing links to each other by pipeline or closed chute, the high temperature scale hooper links to each other with High Temperature Furnaces Heating Apparatus material conveying device 1 pipeline or closed chute, and High Temperature Furnaces Heating Apparatus material conveying device 1 links to each other with iron-smelting furnace 3 by high temperature resistant no clock furnace roof 2.
The stock gas system is made up of furnace roof high-temperature gas duster device 4, regenerative heat-exchange device H1, H2, H3, H4, bag-type dust collector F1, F2, F3, F4, combined power generation device 5, gas storage cabinet 6.Iron-smelting furnace 3 links to each other with furnace roof high-temperature gas duster device 4 by pipeline, and furnace roof high-temperature gas duster device 4, regenerative heat-exchange device H1, H2, H3, H4, bag-type dust collector F1, F2, F3, F4, combined power generation device 5, gas storage cabinet 6 link to each other by pipeline order successively.
The coke-oven gas injection system is made up of coke oven C1, the C5 of coke oven gas purification system, gas pressure blower 8, gas pressure blower 9, regenerative heat-exchange device H1, H2, H3, H4, winding-up coal gas temperature-adjusting device 10.Coke oven C1 links to each other with the C5 of coke oven gas purification system by pipeline, coal gas after the C5 of coke oven gas purification system purifies divides two-way, the pipeline of leading up to links to each other with gas pressure blower 8, regenerative heat-exchange device H1, H3, winding-up coal gas temperature-adjusting device 10, iron-smelting furnace 3 successively in proper order, and another road links to each other with gas pressure blower 9, regenerative heat-exchange device H2, H4, iron-smelting furnace 3 by pipeline order successively.
Oxygen system 11 links to each other with iron-smelting furnace 3 by pipeline.
The dust injection system is made up of furnace roof high-temperature gas duster device 4, bag-type dust collector F1-F4, dust winding-up jar 7.Furnace roof high-temperature gas duster device 4 passes through dust conveyer 12 and dust winding-up jar 7 links to each other, and bag-type dust collector F1-F4 links to each other by dust conveyer 13 and dust winding-up jar 7.Dust winding-up jars 7 links to each other with iron-smelting furnace 3.
Slag dry granulation and residual neat recovering system mainly are made up of with combined power generation device 5 fecal iron separator 14, slag granulation and heat-exchanger rig 15, boiler 16, blower fan 17.
Crossing trough by the effusive slag of iron-smelting furnace 3 Tie Tong flows into and is divided into slag liquid stream behind the fecal iron separator 14 and molten iron flows; the molten iron trough of flowing through links to each other with molten iron conveyer 19; slag liquid stream links to each other with heat-exchanger rig 15 with slag granulation by slag runner; blower fan 17 links to each other with heat-exchanger rig 15 with slag granulation by pipeline; slag granulation links to each other with boiler 16 by pipeline with heat-exchanger rig 15; boiler 16 links to each other with combined power generation device 5 with afterheat of slags by pipeline, and slag granulation links to each other with slag conveyer 18 by tremie pipe with heat-exchanger rig 15.
Claims (2)
1. total oxygen hydrogen-rich gas iron smelting method, it is characterized in that: processing step is:
The ripe coke that a, coke oven (C1) are produced is without quenching, directly be delivered in the high temperature coke transfer feed bin (C3) by high temperature coke e Foerderanlage (C2), the high temperature sintering ore deposit that sinter machine (S1) is produced is without belt-cooling machine or central cooler cooling, high temperature sintering ore deposit e Foerderanlage (S2) by sealing is delivered in the high temperature sintering ore deposit transfer feed bin (S3), the high temperature pelletizing that pellet firing machine (P1) is produced cools off without belt-cooling machine or central cooler, is delivered in the high temperature pelletizing transfer feed bin (P3) by the high temperature pelletizing e Foerderanlage (P2) that seals;
B, with above-mentioned 3 kinds of transfer feed bins respectively as the buffering and the insulating container of pyritous coke, agglomerate and pelletizing, the high temperature furnace charge by 3 high temperature scale hoopers (C4, S4, P4) by proportioning successively, in batches by the sealing High Temperature Furnaces Heating Apparatus material conveying device (1) send in the high temperature resistant no clock furnace roof (2), be distributed in the stove on request by high temperature resistant no clock furnace roof (2) again;
C, utilize buffering and the insulation effect of 3 transfer feed bins (C3, S3, P3), the charging temperature of control coke is 100-1200 ℃, and the charging temperature of agglomerate is 100-1000 ℃, and the charging temperature of pelletizing is 100-1400 ℃;
D, iron-smelting furnace (3) are provided with two exhaust outlets, are respectively the following deoxygenation gas air port of bottom and the row of the going up coal gas air port of middle and lower part; Be blown into the oxygen of 200-600 cubic meter/ton iron and the rich hydrogen inflammable gas of 20-300 cubic meter/ton iron preheating by the following deoxygenation gas air port that is provided with in the iron-smelting furnace bottom, spray into the rich hydrogen inflammable gas of 100-600 cubic meter/ton iron preheating simultaneously in the above position of soft melt zone root, the middle and lower part of iron-smelting furnace (3), rich hydrogen inflammable gas is coke-oven gas or Sweet natural gas, and the temperature that sprays into of rich hydrogen inflammable gas is controlled at 600-1200 ℃;
The gas temperature that e, furnace roof are discharged is at 250-1200 ℃, at first by furnace roof high-temperature gas duster device (4) dedusting, 4-6 regenerative heat-exchange device reclaims the sensible heat of coal gas again, wherein 2-3 regenerative heat-exchange device is used for preheating and sprays into rich hydrogen inflammable gas in the stove from the oxygen air port, and 2-3 regenerative heat-exchange device is used for preheating and sprays into rich hydrogen inflammable gas in the stove from the above position of soft melt zone root in addition;
Coal gas temperature after the heat exchange of 4-6 regenerative heat-exchange device that f, furnace roof are discharged drops to below 200 ℃, and by 4-30 the meticulous dedusting of bag-type dust collector, clean gas is used for replacing coke oven and produces incendiary coke-oven gas and pelletizing and SINTERING PRODUCTION;
G, furnace roof high-temperature gas duster device (4) spray in the iron-smelting furnace (3) by the oxygen air port of dust winding-up jar (7) from iron-smelting furnace with the stove dirt that 4-30 bag-type dust collector collected, and eliminate dust pollution;
The high-temperature liquid state slag that h, iron-smelting furnace (3) produce is by slag granulation and heat-exchanger rig (15) granulation, and the slag sensible heat of recovery produces high pressure steam by boiler (16), unites driving combined power generation device (5) generating with the high pressure gas that furnace roof is discharged.
2. a device of realizing the described method of claim 1 is characterized in that, comprises feed circuit, stock gas system, coke-oven gas injection system, dust injection system, slag dry granulation and residual neat recovering system, oxygen system; Feed circuit links to each other with iron-smelting furnace (3) by high temperature resistant no clock furnace roof (2), the stock gas system links to each other with iron-smelting furnace (3) by pipeline, the coke-oven gas injection system links to each other with iron-smelting furnace (3) by pipeline, the dust injection system links to each other with iron-smelting furnace (3) by pipeline, the slag dry granulation links to each other with iron-smelting furnace (3) by the slag iron runner with residual neat recovering system, and oxygen system (11) links to each other with iron-smelting furnace (3) by pipeline;
Feed circuit is by coke oven (C1), sinter machine (S1), pellet firing machine (P1), high temperature coke e Foerderanlage (C2), high temperature sintering ore deposit e Foerderanlage (S2), high temperature pelletizing e Foerderanlage (P2), high temperature coke transfer feed bin (C3), high temperature sintering ore deposit transfer feed bin (S3), high temperature pelletizing transfer feed bin (P3), high temperature coke scale hooper (C4), high temperature sintering ore deposit scale hooper (S4), high temperature pelletizing scale hooper (P4), High Temperature Furnaces Heating Apparatus material conveying device (1) and high temperature resistant no clock furnace roof (2) are formed;
Coke oven (C1) links to each other with high temperature coke transfer feed bin (C3) by high temperature coke e Foerderanlage (C2), sinter machine (S1) links to each other with high temperature sintering ore deposit transfer feed bin (S3) by high temperature sintering ore deposit e Foerderanlage (S2), pellet firing machine (P1) links to each other with high temperature pelletizing transfer feed bin (P3) by high temperature pelletizing e Foerderanlage (P2), high temperature scale hooper (C4, S4, P4) respectively with corresponding coke, the transfer feed bin of agglomerate and pelletizing links to each other by pipeline or closed chute, high temperature scale hooper (C4, S4, P4) link to each other with High Temperature Furnaces Heating Apparatus material conveying device (1) pipeline or closed chute, High Temperature Furnaces Heating Apparatus material conveying device (1) links to each other with iron-smelting furnace (3) by high temperature resistant no clock furnace roof (2);
The stock gas system is made up of furnace roof high-temperature gas duster device (4), 4～6 regenerative heat-exchange devices, 4～30 bag-type dust collectors, combined power generation device (5), gas storage cabinets (6); Iron-smelting furnace (3) links to each other with furnace roof high-temperature gas duster device (4) by pipeline, and furnace roof high-temperature gas duster device (4), regenerative heat-exchange device, bag-type dust collector, combined power generation device (5), gas storage cabinet (6) link to each other by pipeline order successively;
The coke-oven gas injection system is made up of coke oven (C1), coke oven gas purification system (C5), first gas pressure blower (8), second gas pressure blower (9), regenerative heat-exchange device, winding-up coal gas temperature-adjusting device (10); Coke oven (C1) links to each other with coke oven gas purification system (C5) by pipeline, coal gas after coke oven gas purification system (C5) purifies divides two-way, the pipeline of leading up to links to each other with first gas pressure blower (8), regenerative heat-exchange device, winding-up coal gas temperature-adjusting device (10), iron-smelting furnace (3) successively in proper order, and another road links to each other with second gas pressure blower (9), regenerative heat-exchange device, iron-smelting furnace (3) by pipeline order successively;
The dust injection system is made up of furnace roof high-temperature gas duster device (4), bag-type dust collector, dust winding-up jar (7); Furnace roof high-temperature gas duster device (4) links to each other with dust winding-up jar (7) by first dust conveyer (12), bag-type dust collector links to each other with dust winding-up jar (7) by second dust conveyer (13), and dust winding-up jar (7) links to each other with iron-smelting furnace (3);
Slag dry granulation and residual neat recovering system comprise fecal iron separator (14), slag granulation and heat-exchanger rig (15), boiler (16), blower fan (17) and combined power generation device (5); Crossing trough by the effusive slag of iron-smelting furnace (3) Tie Tong flows into and to be divided into slag liquid stream behind the fecal iron separator (14) and molten iron flows; the molten iron trough of flowing through links to each other with molten iron conveyer (19); slag liquid stream links to each other with heat-exchanger rig (15) with slag granulation by slag runner; blower fan (17) links to each other with heat-exchanger rig (15) with slag granulation by pipeline; slag granulation links to each other with boiler (16) by pipeline with heat-exchanger rig (15); boiler links to each other with combined power generation device (5) by pipeline, and slag granulation links to each other with slag conveyer (18) by tremie pipe with heat-exchanger rig (15).
Priority Applications (16)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101464433A CN101805811B (en) | 2010-04-14 | 2010-04-14 | Method and device for smelting iron by using pure-oxygen and hydrogen-rich gas |
| PCT/CN2010/076462 WO2011063672A1 (en) | 2009-11-24 | 2010-08-30 | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof |
| RU2012110031/02A RU2535103C2 (en) | 2009-11-24 | 2010-08-30 | Method of cast-iron manufacture using oxygen and hydrogen-rich gas, and equipment for its implementation |
| JP2012539166A JP5638621B2 (en) | 2009-11-24 | 2010-08-30 | Total oxygen hydrogen rich coal gas iron making method and apparatus |
| MX2012002313A MX348755B (en) | 2009-11-24 | 2010-08-30 | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof. |
| AU2010324338A AU2010324338B2 (en) | 2009-11-24 | 2010-08-30 | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof |
| CA2773589A CA2773589C (en) | 2009-11-24 | 2010-08-30 | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof |
| EP10832579.6A EP2505674B1 (en) | 2009-11-24 | 2010-08-30 | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof |
| US13/497,855 US8986601B2 (en) | 2009-11-24 | 2010-08-30 | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof |
| KR1020127011580A KR101324254B1 (en) | 2009-11-24 | 2010-08-30 | Method and apparatus for ironmaking using full-oxygen hydrogen-rich gas |
| BR112012005690-5A BR112012005690B1 (en) | 2009-11-24 | 2010-08-30 | HYDROGEN RICH IRON GAS IRON PRODUCTION METHOD AND APPARATUS, AND USED FOR HOT TRANSFER AND HOT LOADING OF THE HYDROGEN IRON AND IRRESHIUM IRON PRODUCTION IRON PRODUCTION MATERIAL OXYGEN AND, AND APPARATUS AND METHOD USED FOR HOT TRANSFER AND HOT LOADING OF IRON PRODUCTION MATERIAL. |
| MYPI2012000733A MY161677A (en) | 2009-11-24 | 2010-08-30 | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof |
| SA110310833A SA110310833B1 (en) | 2009-11-24 | 2010-11-06 | Method and apparatus for ironmaking using full-oxygen hydrogen-rich gas |
| ARP100104302 AR079117A1 (en) | 2009-11-24 | 2010-11-23 | METHOD AND APPARATUS FOR THE MANUFACTURE OF IRON USING A GAS RICH IN HYDROGEN AND TOTAL OXYGEN |
| ZA2012/01421A ZA201201421B (en) | 2009-11-24 | 2012-02-27 | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof |
| US14/622,105 US9581387B2 (en) | 2009-11-24 | 2015-02-13 | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof |
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| MY161677A (en) | 2009-11-24 | 2017-05-15 | Central Iron & Steel Res Inst | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof |
| TWI447229B (en) * | 2010-10-15 | 2014-08-01 | Central Iron & Steel Res Inst | Method and method for hot rolling and feeding of ironmaking raw materials, iron - rich gas - fired iron - making device and method thereof |
| CN102213547A (en) * | 2011-04-18 | 2011-10-12 | 吴道洪 | Regenerative melting furnace and method thereof for smelting black, colored or non-metallic ores |
| CN104152609B (en) * | 2014-08-20 | 2016-03-02 | 重庆赛迪热工环保工程技术有限公司 | blast furnace slag waste heat recycling system |
| CN113774178B (en) * | 2021-10-14 | 2023-07-04 | 新疆八一钢铁股份有限公司 | Production system for coupling European smelting furnace and hydrogen-rich carbon circulating blast furnace |
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| CN2450219Y (en) * | 2000-11-25 | 2001-09-26 | 刘明德 | Blast furnace for iron-smelting and parkerising |
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