前苏联专利SU1528324A3 Method of obtaining cast iron in horizontal reactor

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优先权

专利摘要:
This invention relates to metallurgy, to methods for producing pig iron in an elongated reactor, comprising bottom nozzles and blowing devices. The purpose of the invention is to reduce the loss of iron. The method is carried out in a converter with liquid iron, where coal and ore are fed, as well as oxygen through the nozzles of the bottom part. Exhaust gases burn out above the surface of the bath and are withdrawn above the reaction zone to the adjacent one, in which the temperature of the gases is maintained above the solidification temperature of the drop iron that is carried out. Then the gases are cooled in the adjacent space by mixing with cold gases, liquids, powders up to 800-900 ° C. In this case, powdered materials are ore crushed to 0.1 mm, lime, unburned magnesite, coal. 3 hp ff, 1 ill.
公开号:SU1528324A3
申请号:SU874202175
申请日:1987-03-06
公开日:1989-12-07
发明作者:Эдвин Турнер Рихард；Броцманн Карл；Пауль Моодие Йонатан
申请人:Клекнер Кра Технологи, Гмбх (Фирма)；
IPC主号:

专利说明:

This invention relates to metallurgy, to methods for producing pig iron in an extension reactor containing bottom nozzles and blowing devices.
The purpose of the invention is to reduce the loss of iron.
The drawing shows a reactor with a turf cooling tank attached, longitudinal section.
In the horizontal reactor 1 with a new lining 2 and an internal volume of 150 m there is liquid iron 3 weighing 50-120 tons, containing about 2.5% carbon and equipment, and a temperature of 1550 C. Through the tuyeres 4 fed by the hot air turbine 5, hot air to the surface of the melt with a temperature of 1,200 ° C and pa (: xo; i, oM 2000 them / min.) a mixture of coke, lime and reduced in vyusit fine ore. A mixture having a temperature of 800 s, via pipeline 6 enters the pipeline 5 hot air. The supplied amounts of the individual components are 1350 kg / min of partially reduced ore, 400 kg / min of coke, and 90 kg / min of lime. thus, at the same time, sufficient mixing of the bath is obtained.
In this way, about 1 ton of liquid iron is produced in 1 minute. 01 inlet gas with a temperature of about 1680 ° C is the shortest route through the pipeline

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This is the amount of air in the gas cooling tank 9, in which it is cooled by feeding powdered materials to approximately 800–900 ° C before the gas flow contacts the opposite wall of the tank 9.
Fine ore is fed to the injection ports 13 through the supply line 10, the fine ore is supplied in the amount of 1600 kg / min to the tank
9 for cooling gases where it is heated and recovered in FeO. About 200 kg / min of limestone are fed in downstream through the injection openings 14 of the respective supply line 11. Neutralization is carried out in the stream of hot waste gases, i.e. . splitting limestone into CaO and SOD. Finally, gas coal is supplied to the tank 9 to cool the gases through the injection ports 15, which is connected to the supply line 12.
in the amount of 520 kg / min, which is coked in the stream of hot exhaust gases,
The tank 9 for cooling gases in the zone of supply openings for the spongy material has a lining 16, and the adjacent wall 17 is cooled by water in the zone in which the flow of shdh gases can touch it.
The mixture of off-gases, dust and reactive powdered materials is collected in a hot cyclone 18, from which a pipeline of coke, FeO and CaO is transported through pipeline 6 to the feed site. The purified exhaust gas leaves the hot cyclone 18 through pipeline 19 and partially serves to produce hot air. The remaining part of about 1900 Nm / min with a heat of combustion of 840 kcal / Nm is used for outdoor applications.
If an extended reactor is used, for example a horizontal converter, the opening for the flue gases is made offset from the reaction zone of the carbon-containing fuel and thus located outside the splash and splash zone.
In the reactor, waste gases capture a large amount of fine droplets of cast iron with a size of about 0.1 mm, which is about 100,200 kg / ton of supplied coal, in most cases identifiable droplets have a diameter of 0.01-0.1 mm. The droplets enlarged by the flow of exhaust gases may settle in the pipeline for the exhaust gases and, after a relatively short operating time, lead to its blockage.
Deposits can be prevented by increasing the solidification temperature of the iron droplets, which are increased by the flow of waste gases.
The cavity is cylindrical.
forms, with the diameter of the cylinder multiple of the diameter of the pipeline for hot air.
Waste gases at the exit of the flue gas channel or after being mixed with cold gases, liquids and / or powdered materials to reduce the temperature of the flue gas stream to a value below the maximum temperature of 1000 ° C. In addition, powdered materials have the advantage that the iron droplets entrained by the exhaust gas stream are deposited on these materials. As powdered substances, for example, ores, lime, limestone, undiluted magnesite, coal, coke can be used individually or in any mixture of materials. For example, for iron ore, the grain size must be less than 0.1 mm, in order to restore the particles to the stage of yewtit during the residence time of 1 s,
Preheated air is used as the gas containing oxygen. If the air heated up to 1000-1200 ° C, t, e, hot, is blown to the surface of the bath in such a way that the gaseous reaction products are sucked into the gas space of the reactor, burned and the energy released during this process is transferred to the melt, then 40-50% of the energy produced by the oxidation of coal in
.
On
For example, under these conditions, 700 kg of coal is sufficient to produce 1 ton of liquid iron.
When applying the proposed method, the loss of pig iron with waste gases is significantly reduced and the reliability of the installation increases.
formula of

权利要求:
Claims (1)
[1]
1. A method of producing pig iron in a horizontal reactor, including bottom blowing of the melt through nozzles, feeding carbon-containing fuel, iron ore and / or pre-reduced ore into the melt, burning the exhaust gases of the reaction gases with an acidic gas, which differ In order to reduce iron losses, the exhaust gases are diverted from the reaction zone to the zone adjacent to the reactor, in which the temperature of the gases which are then withdrawn through the pipeline is higher than hardening of the carried-out iron droplets and then the gases are cooled in the adjacent cavity to 800-900 ° C.
515283246
2, the method according to claim 1, characterized in that the exhaust gases in the zone immediately after leaving the pipeline are mixed with cold gases, liquids and / or powdered 10
15
20
materials until the temperature decreases in the range of 800-900 ° C.
3, the method according to claims 1 and 2, of which is based on the fact that
sedimentation of entrained droplets of guna and / or metal oxides, as a powdery material mixed with a stream of flue gases, will use fine ore, lime, limestone, raw magnesite, coal, coke separately or in any mixtures.
4, a method according to claim 4, characterized in that an ore that is crushed to a particle size less than 0.1 mm is blown into the gas stream and reduced to wustite.
materials until the temperature decreases in the range of 800-900 ° C.
3, the method according to claims 1 and 2, of which is based on the fact that
sedimentation of entrained droplets of guna and / or metal oxides, as a powdery material mixed with a stream of flue gases, will use fine ore, lime, limestone, raw magnesite, coal, coke separately or in any mixtures.
4, a method according to claim 4, characterized in that an ore that is crushed to a particle size less than 0.1 mm is blown into the gas stream and reduced to wustite.
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同族专利:

公开号 | 公开日

ES2000074A4|1987-11-16|

CZ278121B6|1993-09-15|

IN166838B|1990-07-21|

US4861368A|1989-08-29|

ES2000074B3|1990-11-01|

AU593072B2|1990-02-01|

BR8701060A|1987-12-22|

EP0236801A2|1987-09-16|

JPS62263909A|1987-11-16|

CN1005273B|1989-09-27|

JPH0214403B2|1990-04-09|

EP0236801B1|1990-07-25|

DE3763868D1|1990-08-30|

KR870009034A|1987-10-22|

ZA871639B|1987-12-30|

KR900007783B1|1990-10-20|

CZ147387A3|1993-06-16|

DE3607776A1|1987-09-17|

CN87101937A|1987-09-16|

AT54944T|1990-08-15|

CA1286505C|1991-07-23|

DE3607776C2|1988-08-25|

AU6982787A|1987-09-10|

EP0236801A3|1988-05-18|

引用文献:

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

US2865734A|1955-07-19|1958-12-23|British Iron Steel Research|Treatment of metal-containing materials|

US3028231A|1959-01-01|1962-04-03|British Iron Steel Research|Processing of metallic ores|

FR1314435A|1961-11-06|1963-01-11|Koninklijke Hoogovens En Staal|Method and device for the reduction of iron combinations|

US3186830A|1963-05-20|1965-06-01|William H Moore|Melting process|

JPS5022055Y1|1968-10-22|1975-07-03|

US3734716A|1971-11-18|1973-05-22|Fmc Corp|Steelmaking process|

US4087274A|1975-07-04|1978-05-02|Boliden Aktiebolag|Method of producing a partially reduced product from finely-divided metal sulphides|

DE2843879C2|1978-10-07|1983-11-24|Klöckner-Humboldt-Deutz AG, 5000 Köln|Device for gasifying carbon by means of a molten metal bath|

DE2936398A1|1979-09-08|1981-03-26|Ver Glaswerke Gmbh|ELECTRICALLY HEATED GLASS|

DE3133575C2|1980-08-22|1987-05-07|Kloeckner Cra Technologie Gmbh, 4100 Duisburg, De|

DE3318005C2|1983-05-18|1986-02-20|Klöckner CRA Technologie GmbH, 4100 Duisburg|Process for making iron|

DE3607774C2|1986-03-08|1988-07-28|Kloeckner Cra Technologie Gmbh, 4100 Duisburg, De|

DE3607775C2|1986-03-08|1988-08-25|Kloeckner Cra Technologie Gmbh, 4100 Duisburg, De|JP2545804B2|1986-09-08|1996-10-23|日本鋼管株式会社|High oxidation combustion type smelting reduction method|

JP2586020B2|1986-12-02|1997-02-26|日本鋼管株式会社|Smelting reduction smelting method|

JP2545814B2|1986-12-02|1996-10-23|日本鋼管株式会社|Smelting reduction smelting equipment|

DE3737271C2|1986-12-23|1991-10-10|Deutsche Voest-Alpine Industrieanlagenbau Gmbh, 4000 Duesseldorf, De|

DE327862T1|1988-02-12|1989-12-07|Kloeckner Cra Patent Gmbh, 4100 Duisburg, De|METHOD AND DEVICE FOR AFTERBURNING.|

CA2006253C|1988-12-20|1998-08-11|Rodney James Dry|Pre-reduced iron oxide|

IN175954B|1990-03-13|1995-11-25|Cra Services|

JP2918646B2|1990-07-18|1999-07-12|川崎重工業株式会社|Smelting reduction furnace|

DE4234974C2|1992-10-16|1994-12-22|Tech Resources Pty Ltd|Process for increasing the turnover of materials in metallurgical reaction vessels|

DE4234973C1|1992-10-16|1994-06-01|Tech Resources Pty Ltd|Process for protecting the refractory lining in the gas space of metallurgical reaction vessels|

AT404842B|1992-10-19|1999-03-25|Voest Alpine Ind Anlagen|METHOD FOR CONTINUOUSLY MELTING SCRAP|

DE4343957C2|1993-12-22|1997-03-20|Tech Resources Pty Ltd|Converter process for the production of iron|

US5733358A|1994-12-20|1998-03-31|Usx Corporation And Praxair Technology, Inc.|Process and apparatus for the manufacture of steel from iron carbide|

MY119760A|1998-07-24|2005-07-29|Tech Resources Pty Ltd|A direct smelting process|

US6602321B2|2000-09-26|2003-08-05|Technological Resources Pty. Ltd.|Direct smelting process|

US8016912B2|2007-09-14|2011-09-13|Barrick Gold Corporation|Process for recovering platinum group metals using reductants|

法律状态:

优先权:

申请号 | 申请日 | 专利标题

DE3607776A|DE3607776C2|1986-03-08|1986-03-08|

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