CN1073212A - Entirely flow continuous steelmaking and iron-smelting method and equipment - Google Patents
Entirely flow continuous steelmaking and iron-smelting method and equipment Download PDFInfo
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- CN1073212A CN1073212A CN 92114669 CN92114669A CN1073212A CN 1073212 A CN1073212 A CN 1073212A CN 92114669 CN92114669 CN 92114669 CN 92114669 A CN92114669 A CN 92114669A CN 1073212 A CN1073212 A CN 1073212A
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Abstract
The present invention discloses a kind of entirely flow continuous steelmaking and iron-smelting method and equipment.Mainly by the reactor of an integrally closed, fine iron breeze and flux add from reactor head for it, and it is reduced to iron protoxide by forward high-temperature gas, be melted again in the bottom, after enter the redox district of reactor arranged transversely.Coal dust that is blown in the reduction zone and oxygen finally are reduced to iron with iron protoxide, by one section settling region iron are dripped with slag and separate, and the passage that molten iron is flowed through on the dam enters oxidation zone, and last molten steel and slag are discharged from tap hole and slag notch respectively.Coal gas enters waste heat boiler through smelting gas flue, and waste heat is converted to steam with generating, and the coal gas after the part dedusting can be used for the reduction of fine iron breeze through reheat.
Description
The present invention is continuous ironmaking, method for making steel and an equipment.
The steelmaking process of large integrated enterprise is produced molten iron and oxygen converter steelmaking with blast furnace at present.Modern blast furnace is a huge facility, and building needs great amount of investment, and for example the blast furnace of daily output 5 kiloton molten iron needs 200,000,000 dollars investment approximately.Blast furnace coke is made fuel and reductive agent, what is more important, coke works to support furnace charge in blast furnace, it can allow furnace gas by and do not produce too high pressure and fall.But the construction of pit kiln is a very big investment, causes the serious environmental pollution problem simultaneously again.The coke oven of daily output 3 kiloton coke needs about 200,000,000 dollars investment approximately.The preparation of blast furnace iron ore also needs a very big investment cost.The required investment of sintering plant of monthly output 5 kiloton pig iron is about 100,000,000 dollars.
The huge investment that blast furnace, coke oven and sintering plant are required, and the serious environmental pollution that coking plant and sintering plant caused, it is impossible to make that newly-built blast furnace ironmaking facility almost becomes.
The purpose of this invention is to provide a kind of integrated direct flow type continuous iron-smelting, method for making steel and equipment, be to come coke for replacing and directly fine iron breeze is added the shaft-type furnace reactor with coal, the reactor branch divides prereduction district, reduction zone and oxidation zone into, add raw material at top, prereduction district, the thermal reduction gas heating that is sprayed into by top is reduced into iron protoxide (Fu Shi body) and melts in the shaft-type furnace bottom.The iron protoxide of fusing flows to the melting and reducing part, and coal gas and the oxygen reduction that is sprayed into also is fused into liquid iron, and liquid iron flows into oxidation zone, and impurity such as the carbon that contains in the liquid iron, brick and phosphorus are oxidized to steel or half steel at the industrial oxygen that oxidation zone is blown into.
The shaft-type furnace reactor that provides with the integrally closed of fine iron breeze and the steel-making of coal dust direct ironmaking is provided in the present invention, and this reactor comprises a shaft-type furnace, i.e. the reduction zone and the oxidation zone of a vertical unfolded prereduction district and a horizontal spreading.Reduction zone and oxidation zone are separated by the dam that refractory materials is built into, and the reduction zone is further divided into reaction zone and settling region again, is provided with in the reduction zone to spray into coal dust and oxygen unit, drips with slag at settling region iron and separates, and slag is emitted by cinder notch.Between oxidation zone and reduction zone, be provided with the dam that refractory materials is built into, build, protrude from the surface of slag, passage is arranged on boiler bridge, so that molten iron flows into oxidation zone from the reduction zone in furnace bottom.
The prereduction district of reactor is the cartridge type shaft furnace, cylinder or rectangular parallelepiped that its redox district is a horizontal spreading.The redox district smelts the upper end that gas flue is positioned at the redox district, and prereduction district gas exit can be before coal gas enters the reduction zone, also can flow through redox district and together discharge after this district's coal gas mixes.
Equipment of the present invention is a reactor assembly, be again one by fine iron breeze and coal dust the method for continuous steelmaking and iron-smelting in the container of an integrally closed.In this method, fine ore and flux enter the top in cartridge type prereduction district, thermal response gas heats furnace charge and it is reduced to iron protoxide, iron protoxide in the bottom in prereduction district with the flux melting and enter the reduction zone, entering coal dust and the oxygen reduction that the iron protoxide of reduction zone sprayed into is molten iron, molten iron separates in the settling region with slag, slag is discharged by slag notch, the passage that molten iron is flowed through on the intermediary dam, redox district enters oxidation zone, and at this district decarburization, desiliconization and dephosphorization, molten steel flows out from tap hole.
Fill process comprises imports hopper from feed bin with screw feeder with fine iron breeze and ground flux, is entered the top in prereduction district again by the opening for feed of hopper bottom.Opening for feed and the junction water cooled seal of prereduction district.Enter the top that cold reducing gas that the powder in prereduction district radially is blown into is uniformly distributed in the prereduction district by opening for feed.
Industry oxygen or oxygen-rich air are imported by reduction section, and slag is discharged by the slag notch of settling region, and the bottom stirring of inert gas is used to add fast response and strengthens heat passage between gas and the slag.
In oxidation zone, with industrial oxygen decarburization, desiliconization and dephosphorization.Gas stirring also is used for oxidation zone.
The shaft of horizontal spreading should have certain obliquity, and the coal gas waste heat will be absorbed and used in waste heat boiler.Dust in the gas is further removed by the electrostatic precipitation qi exhaustion more earlier by tornado dust collector.The clean coal gas of part can be used for prereduction, and part is used to heat prereduction gas, and the gas that is left can be used for the follow-up steel course of processing.
Further describe the present invention below in conjunction with technical process and equipment synoptic diagram.
Fig. 1 technological process flow process of the present invention figure.
Fig. 2 the present invention makes steel the schematic side view of reactor.
Fig. 3 the present invention smelts iron the schematic side view of reactor.
Fig. 4 reactor A-A cross-sectional schematic.
Fig. 5 isolation dam front schematic view.
Fig. 6 feeding unit synoptic diagram.
Fig. 7 water cooled seal circle B-B cut-away view.
Referring to Fig. 2, reactor design of the present invention is three sections, redox section (B) and smelting gas flue (C) by vertical unfolded prereduction section (A), horizontal spreading are formed, the redox section is divided into reduction zone and oxidation zone again, and the reduction zone is divided into reaction zone (40) and settling region (70) again.
Referring to Fig. 2, shown in Figure 6, fine iron breeze and ground flux are respectively by screw feeder input hopper, enter the top, prereduction district of reactor after in hopper, mixing, and the high temperature reduction gas heating that is blown at this place and prereduction are iron protoxide, iron protoxide is chewed the heat that is provided in bottom, prereduction district by the fine coal burning and is dissolved, and generates the ferrous slag of high oxidation.Carbon monoxide in the prereduction gas (CO) and carbonic acid gas (CO
2) to keep certain ratio (0.5～1.5), to satisfy thermodynamics and the kinetics needs that under prereduction district temperature, fine iron breeze are reduced to iron protoxide.
Compare with other ironmaking novel process of making fuel with fine coal, the present invention adopts the whole container of sealing with iron ore concentrate prereduction with concurrent, fusion and further reduction, and it has the advantage that need not transmit the intermediate reaction thing.Other technology is made the prereduction device with shaft furnace or fluidized-bed mostly, and the hot breeze after the prereduction or the middle conveying of pellet can cause the problem of equipment and environment aspect.
The fused iron protoxide enters cross section be rectangular or the reduction zone of circle shape after, the fine coal reduction that is blown into by the top, reduction reaction institute heat requirement is that the secondary combustion by the partial combustion of coal and reduction carbon monoxide that produces and the industrial oxygen that sprays into is provided.The slag that the reduction zone the generates settling region of flowing through, the iron that deposition is carried secretly in slagging tap drips the back is discharged by slag notch.The molten iron passage (it is following to be positioned at slag blanket) that molten iron flows through on the boiler bridge enters oxidation zone.Bath temperature depends primarily on following factor in the reduction reaction process: the hot gas on secondary combustion degree, furnace wall thermosteresis and the slag blanket is to the molten bath heat transfer efficiency.
In smelting reduction process, the iron protoxide in the slag will be reduced by the carbon that infiltrates in the molten iron.The fine coal that top lance sprays into will constantly replenish the charcoal consumption of reduction reaction.Because charcoal and the ferrous speed of response at high temperature of liquid oxidatively are very fast, the speed of iron reduction reaction is determined to the speed of reaction interface diffusion by charcoal and iron protoxide.Therefore, the speed of reduction reaction speed depends primarily on the speed that stir the reduction zone.In addition, reduction reaction is a strong endothermic reaction, needs higher efficient of being conducted heat to the molten bath by hot gas.Consider that from this two aspect the good stirring in molten bath will play a crucial role to the production efficiency of reactor.In this invention, use top winding-up and bottom stirring of inert gas will guarantee the well blend in molten bath.
Because oxidation zone produces contains coal gas that the higher coal gas of carbon monoxide and prereduction district and reduction zone produced and merge together and comprehensively reclaim, heat energy in the coal gas and chemical energy can be fully used.Coal gas of high temperature can be used for generating, and the coal gas after the cleaning can be used for the pre-reduced iron washed ore, can reduce the consumption of total fuel so greatly.
Utilizing hotblast stove to come the preheating reducing gas is the another characteristics of this invention, and this technology has supplied the high temperature prereduction gas that can accurately control for the prereduction district.
Referring to Fig. 3, a kind of equipment of continuous steelmaking and iron-smelting, contain shaft-type furnace, reactor, whirlwind and the electrostatic precipitator (74) and the powder that it is characterized in that comprising integrally closed add equipment, wherein the integrally closed reactor is divided into prereduction section (A), the redox section (B) of setting and smelts gas flue (C), and the prereduction section is a shaft-type furnace; The redox section is the horizontal container with circle or square-section; Smelting gas flue is a vertical passage, and the outlet of passage connects waste heat boiler (72), whirlwind and electrostatic precipitator (74); The shaft-type furnace top has opening for feed (18), opening for feed is connected with the hopper outlet, furnace sidewall is provided with 2～4 thermal reduction gas inlets (32), the body of heater lower sides is provided with 1～4 fine coal burner (36), the thermal reduction gas that upper of furnace body sprays into is reduced to iron protoxide (Fu Shi body) with the iron ore concentrate branch, and iron protoxide and flux are heated; The body of heater bottom connects the reduction zone, and its top is provided with coal dust, oxygen intake (42), and the bottom is provided with inert gas entrance (58), and iron protoxide is reduced to liquid metal iron the most at last, and molten iron flows out from outlet (62), and slag is discharged from cinder notch (46).More than be to be used for ironmaking, then set up an isolation dam (54) at redox section middle part if be used for steel-making (referring to Fig. 2), the left side on dam is reduction zone (41), and the right side on dam is oxidation zone (70), the bottom on dam has passage (52), and molten iron flows into oxidation zone from passage; Oxidation zone top is provided with oxygen intake (60), and the oxidation zone bottom is provided with inert gas entrance (68), and the end of oxidation zone has tap hole (62), and side has slag outlet (66).
Referring to Fig. 6, powder adding equipment comprises hopper (16), screw feeder (20), (26), fine iron breeze feed bin (10), (12), (14) and ground flux feed bin (23), (24), and powder enters hopper through screw feeder.Powder mixes the back from shaft-type furnace its top feed mouth (18) charging in hopper; The cold reducing gas (31) of radial flow radially flows out through concentric tube (28).One slit (30) is arranged at the bottom of inlet pipe, makes the gas that penetrates by it have enough kinetic energy, so that powder is evenly distributed in the prereduction district (A) of reactor.Cartridge type fire door place also is provided with water cooler (25), is used to cool off hopper (16).
Ingress at coal dust, oxygen in this equipment all is equipped with burner.
Smelting the top that gas flue (C) is arranged on the redox district in this equipment erects.
Referring to Fig. 1, continuous steelmaking and iron-smelting method of the present invention
(1) add fine iron breeze and ground flux to the top of integrally closed reactor cartridge type stove, fine iron breeze and ground flux are along the shaft-type furnace radial distribution;
(2) the thermal reduction gas inlet from the prereduction district sprays into thermal reduction gas, with concurrent fine iron breeze is reduced to iron protoxide (Fu Shi body);
(3) bottom, prereduction district sprays into coal dust and oxygen, with iron protoxide reduction and fusion;
(4) reduction zone burner (42) sprays into coal dust and oxygen, and the fused iron protoxide is reduced into liquid iron; (48) are blown into rare gas element and stir from the air port simultaneously;
(5) settling region (50) will be involved in iron in the slag and drip with slag and separate;
(6) slag is discharged from cinder notch (46);
(7) molten iron flows out from outlet (62), and coal gas is discharged from smelting gas flue.
More than be the method for ironmaking, if steel-making except that repeating (1)～(6) step, also need increase:
(1) molten iron flow in the oxidation zone by the passage (52) of bottom, dam, and oxidation zone sprays into oxygen and removes carbon, silicon and phosphorus in the molten iron;
(2) molten steel flows out from tap hole (62), and flue gas is discharged from smelting gas flue;
(3) slag is discharged from slag-drip opening (66).
The method of continuous steelmaking and iron-smelting of the present invention has following characteristics: 1. the powder of Jia Ruing is the method for feeding in raw material to hopper from feed bin with screw feeder; 2. enter the fine iron breeze on prereduction section top and ground flux along the radially-arranged method of shaft-type furnace; 3. the part coal gas that produces in the integrally closed reactor is used for thermal reduction gas as the pre-reduced iron fine ore through the hotblast stove heating cycle.
Molten iron flows into the spray gun that is inserted by the top oxidation zone (70) back and sprays into oxygen with the carbon in the oxidation molten iron, silicon and phosphorus, and molten steel is flowed out by tap hole (62) continuously or intermittently.The oxidation zone slag is discharged by slag notch (66).For the promotes oxidn process, the bottom, molten bath is blown into rare gas element by air port (68) and stirs at this.
Can go out slag iron (steel) to the greatest extent before making blowing out, furnace bottom has the downward pitch angle of a level, and the angle of inclination should be too not big, is advisable with about 3 °.
The coal gas that prereduction district (A) and reduction-oxidation district (B) produce converges the back and discharges by smelting gas flue.The coal gas waste heat boiler (72) of flowing through with the recovery waste heat generating, is removed dust through whirlwind and electrostatic precipitator (74) again.The clean coal gas of part is used for the thermal reduction gas of prereduction fine ore after hotblast stove (76) heating.
Example:
In following column count, aforesaid device supposition is used for per hour producing 100 tons of pig iron.Table 1(a, b c) has listed the chemical analysis of iron ore concentrate, coal dust and flux.The oxygen that is used for prereduction and reduction zone is industrial oxygen, and its composition is about 95% oxygen and 5% nitrogen.
The thermosteresis in prereduction district and melting and reducing district is 10% of intake, is 40% at melting and reducing district post-combustion rate, and heat transfer efficiency is 85%.
Table 1(a) iron ore concentrate composition (weight percentage)
| Iron | Calcium oxide | Magnesium oxide | Silicon-dioxide | Aluminium sesquioxide | Manganese oxide | Phosphorus |
| 71.1 | 0.09 | 0.35 | 0.40 | 0.24 | 0.06 | 0.01 |
Table 1(b) composition (weight percentage) of coal
| Carbon | Hydrogen | Oxygen | Nitrogen | Sulphur | Ash |
| 81.2 | 4.3 | 4.4 | 1.6 | 0.6 | 8.0 |
Contain in the ash
| Silicon-dioxide | Aluminium sesquioxide | Calcium oxide | Ferric oxide |
| 5.12 | 1.84 | 0.18 | 0.50 |
Table 1(C) composition (weight percentage) of flux
| Calcium oxide | Silicon-dioxide | Carbonic acid gas |
| 98 | 0.5 | 1.5 |
According to above-mentioned supposition, the calculation result of thermal equilibrium and mass balance is listed table 2 respectively in table 5.Table 2 is for per hour producing the needed inlet amount of 100 pig iron with slag and the thermometal output at each reaction zone
The charging of each reaction zone of table 2, slag and thermometal are given birth to amount (ton/time)
| Iron ore concentrate | Flux | Coal | Slag | Thermometal | |
| The prereduction district | 136.0 | 3.55 | 14.7 | 129.7 | - |
| The reduction zone | - | - | 51.9 | 8.6 | 100 |
Table 3 is standard volume flow and the per-cent of gas each component at each reaction zone.
Table 3 gas is at the standard volume flow and the per-cent of each reaction zone
| CO | CO 2 | N 2 | H 2 | H 2O | Total amount | ||
| Prereduction district inlet | Mark cubic meter/time | 34140 | 45880 | 3258 | 11250 | 15000 | 109500 |
| Per-cent | 31.2 | 41.8 | 3.0 | 10.3 | 13.7 | 100 | |
| The outlet of prereduction district | Mark cubic meter/time | 30840 | 71950 | 4586 | 9993 | 23320 | 140700 |
| Per-cent | 21.9 | 51.1 | 3.3 | 7.1 | 16.6 | 100 | |
| The reduction zone | Mark cubic meter/time | 45020 | 30010 | 2653 | 15010 | 10010 | 102700 |
| Per-cent | 43.8 | 29.2 | 2.6 | 14.6 | 9.7 | 100 | |
| General export | Mark cubic meter/time | 75860 | 10186 | 7239 | 25000 | 33330 | 243400 |
| Per-cent | 31.1 | 41.9 | 3.0 | 10.3 | 13.7 | 100 | |
Table 4 is the oxygen-consumption of each reaction.
Table 4 oxygen consumption (mark cubic meter/time)
| The prereduction district | The reduction zone | Total amount |
| 22810 | 39770 | 62580 |
Table 5 is prereduction district and the reduction zone consumption of coal under above-mentioned false condition.
Each reaction zone of table 5 and total consumption of coal (ton/time)
| The prereduction district | The reduction zone | Total amount |
| 14.66 | 51.95 | 66.61 |
Gas outlet temperature is higher than 1500 ℃, supposes that the waste heat boiler Outlet Gas Temperature is 300 ℃, from coal gas recyclable 1.32 * 10
11The heat in card/time.Suppose 35% turnover ratio, then can generate electricity 5.37 * 10
7Watt.The electric energy of supposing to be used to make oxygen is 1.65 * 10
7Watt (suppose every production one mark cubic meter oxygen need 0.4 watt-hour) then economizes 3.72 * 10
7Watt electric energy, exportable other purpose that is used for.
Claims (10)
1, a kind of entirely flow continuous steelmaking and iron-smelting method is characterized in that:
(1) add fine iron breeze and ground flux to the top of integrally closed reactor cartridge type stove, fine iron breeze and ground flux are along the shaft-type furnace radial distribution;
(2) the thermal reduction gas inlet from the prereduction district sprays into thermal reduction gas, with concurrent fine iron breeze is reduced to iron protoxide (Fu Shi body);
(3) bottom, prereduction district sprays into coal dust and oxygen, with iron protoxide reduction and fusion;
(4) reduction zone burner (42) sprays into coal dust and oxygen, and the fused iron protoxide is reduced into liquid iron; (48) are blown into rare gas element and stir from the air port simultaneously;
(5) settling region (50) will be involved in iron in the slag and drip with slag and separate;
(6) slag is discharged from cinder notch (46);
(7) molten iron flows out from outlet (62), and coal gas is discharged from smelting gas flue.
2, by the described continuous steelmaking and iron-smelting method of claim 1, it is characterized in that:
(1) add fine iron breeze and ground flux to the top of integrally closed reactor cartridge type stove, fine iron breeze and ground flux are along the shaft-type furnace radial distribution;
(2) the thermal reduction gas inlet from the prereduction district sprays into thermal reduction gas, with concurrent fine iron breeze is reduced to iron protoxide (Fu Shi body);
(3) bottom, prereduction district sprays into coal dust and oxygen, with iron protoxide reduction and fusion;
(4) reduction zone burner (42) sprays into coal dust and oxygen, and the fused iron protoxide is reduced into liquid iron; (48) are blown into rare gas element and stir from the air port simultaneously;
(5) settling region (50) will be involved in iron in the slag and drip with slag and separate;
(6) slag is discharged from cinder notch (46);
(7) molten iron flows out from outlet (62), and coal gas is discharged from smelting gas flue;
(8) molten steel flows out from tap hole (62), and coal gas is discharged from smelting gas flue;
(9) slag is discharged from slag-drip opening (66).
3,, it is characterized in that the powder that adds is the method for feeding in raw material to hopper from feed bin with screw feeder by claim 1,2 described continuous steelmaking and iron-smelting methods.
4,, it is characterized in that entering the fine iron breeze on prereduction section top and ground flux along the radially-arranged method of shaft-type furnace by claim 1,2 described continuous steelmaking and iron-smelting methods.
5,, it is characterized in that the part coal gas that produces in the integrally closed reactor is used for thermal reduction gas as the pre-reduced iron fine ore through process furnace heating and circulation by claim 1,2 described continuous steelmaking and iron-smelting methods.
6, a kind of equipment of entirely flow continuous steelmaking and iron-smelting, it is characterized in that it is reactor, whirlwind and electrostatic precipitator (74) and the powder adding equipment of integrally closed, wherein the integrally closed reactor is divided into prereduction section (A), the redox section (B) of setting and smelts gas flue (C), and the prereduction section is a shaft-type furnace; The redox section is the horizontal container with circle or square-section; Smelting gas flue is a vertical passage, and the outlet of passage connects waste heat boiler (72), whirlwind and electrostatic precipitator (74); The shaft-type furnace top has opening for feed (18), opening for feed is connected with the hopper outlet, furnace sidewall is provided with 2～4 thermal reduction gas inlets (32), the body of heater lower sides is provided with 1～4 fine coal burner (36), the thermal reduction gas that upper of furnace body sprays into is reduced to iron protoxide (Fu Shi body) with the iron ore concentrate branch, and iron protoxide and flux are heated; The body of heater bottom connects the reduction zone, and its top is provided with coal dust, oxygen intake (42), and the bottom is provided with inert gas entrance (58), and iron protoxide is reduced to liquid metal iron the most at last, and molten iron flows out from outlet (62), and slag is discharged from cinder notch (46).
7, press the equipment of the described continuous steelmaking and iron-smelting of claim 6, it is characterized in that it is reactor, whirlwind and electrostatic precipitator (74) and the powder adding equipment of integrally closed, wherein the integrally closed reactor is divided into prereduction section (A), the redox section (B) of setting and smelts gas flue (C), and the prereduction section is a shaft-type furnace; The redox section is the horizontal container with circle or square-section; Smelting gas flue is a vertical passage, and the outlet of passage connects waste heat boiler (72), whirlwind and electrostatic precipitator (74); The shaft-type furnace top has opening for feed (18), opening for feed is connected with the hopper outlet, furnace sidewall is provided with 2～4 thermal reduction gas inlets (32), the body of heater lower sides is provided with 1～4 fine coal burner (36), the thermal reduction gas that upper of furnace body sprays into is reduced to iron protoxide (Fu Shi body) with the iron ore concentrate branch, and iron protoxide and flux are heated; The body of heater bottom connects the reduction zone, and its top is provided with coal dust, oxygen intake (42), and the bottom is provided with inert gas entrance (58); Set up an isolation dam (54) at redox section middle part, the left side on dam is reduction zone (41), and the right side on dam is oxidation zone (70), and the bottom on dam has passage (52), and molten iron flows into oxidation zone from passage; Oxidation zone top is provided with oxygen intake (60), and the oxidation zone bottom is provided with inert gas entrance (68), and the end of oxidation zone has tap hole (62), and side has slag outlet (66).
8, press the equipment of claim 6,7 described continuous steelmaking and iron-smeltings, it is characterized in that powder adding equipment comprises hopper (16), screw feeder (20), (26), fine iron breeze feed bin (10), (12), (14) and ground flux feed bin (23), (24), powder enters hopper through screw feeder.
9, by the equipment of claim 6,7 described continuous steelmaking and iron-smeltings, it is characterized in that the ingress of coal dust, oxygen all is equipped with burner.
10,, it is characterized in that smelting the top setting that gas flue is arranged on the redox district by the equipment of claim 6,7 described continuous steelmaking and iron-smeltings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92114669 CN1029411C (en) | 1992-12-23 | 1992-12-23 | Entirely flow continuous steelmaking and iron-smelting method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92114669 CN1029411C (en) | 1992-12-23 | 1992-12-23 | Entirely flow continuous steelmaking and iron-smelting method and apparatus |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94104011 Division CN1031206C (en) | 1994-04-14 | 1994-04-14 | Method and equipment for integrated direct flow type continuous iron-smelting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1073212A true CN1073212A (en) | 1993-06-16 |
| CN1029411C CN1029411C (en) | 1995-08-02 |
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ID=4947049
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92114669 Expired - Fee Related CN1029411C (en) | 1992-12-23 | 1992-12-23 | Entirely flow continuous steelmaking and iron-smelting method and apparatus |
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| CN (1) | CN1029411C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665849B (en) * | 2008-09-04 | 2011-04-06 | 莱芜钢铁集团有限公司 | Continuous steel making process for iron ore |
| CN102137915A (en) * | 2008-09-26 | 2011-07-27 | 株式会社神户制钢所 | Method of coal gasification and direct ironmaking and system therefor |
| CN103154652A (en) * | 2010-08-18 | 2013-06-12 | 特诺恩股份公司 | Method and control and tracking system of the charge of material transported by a continuous supply conveyor of a metallurgical furnace, particularly an electric furnace for the production of steel |
| WO2015131438A1 (en) * | 2014-03-04 | 2015-09-11 | 北京科技大学 | Device for online modification of thermal-state smelting slag |
| CN108374067A (en) * | 2018-04-09 | 2018-08-07 | 东北大学 | A kind of device and method of reduction direct steelmaking at full speed |
-
1992
- 1992-12-23 CN CN 92114669 patent/CN1029411C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665849B (en) * | 2008-09-04 | 2011-04-06 | 莱芜钢铁集团有限公司 | Continuous steel making process for iron ore |
| CN102137915A (en) * | 2008-09-26 | 2011-07-27 | 株式会社神户制钢所 | Method of coal gasification and direct ironmaking and system therefor |
| CN103154652A (en) * | 2010-08-18 | 2013-06-12 | 特诺恩股份公司 | Method and control and tracking system of the charge of material transported by a continuous supply conveyor of a metallurgical furnace, particularly an electric furnace for the production of steel |
| CN103154652B (en) * | 2010-08-18 | 2015-05-27 | 特诺恩股份公司 | Method and control and tracking system of the charge of material transported by a continuous supply conveyor of a metallurgical furnace |
| WO2015131438A1 (en) * | 2014-03-04 | 2015-09-11 | 北京科技大学 | Device for online modification of thermal-state smelting slag |
| CN108374067A (en) * | 2018-04-09 | 2018-08-07 | 东北大学 | A kind of device and method of reduction direct steelmaking at full speed |
| CN108374067B (en) * | 2018-04-09 | 2019-07-02 | 东北大学 | A kind of device and method of reduction direct steelmaking at full speed |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1029411C (en) | 1995-08-02 |
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