SU369146A1 - - Google Patents
Info
- Publication number
- SU369146A1 SU369146A1 SU1367134A SU1367134A SU369146A1 SU 369146 A1 SU369146 A1 SU 369146A1 SU 1367134 A SU1367134 A SU 1367134A SU 1367134 A SU1367134 A SU 1367134A SU 369146 A1 SU369146 A1 SU 369146A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- charge
- manganese
- mixture
- reduction
- heated
- Prior art date
Links
Classifications
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- 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]
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- 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Description
dd
Изобретение относитс к ферросплавному производству.This invention relates to ferroalloy production.
Известен способ подготовки шихты, при котором рудный концентрат вместе с флюсами распла1вл ют и восстанавливают в циклонной печи. Температура процесса может достигать 1900°С. Однако получаема шихта при последующей плавке требует введени большого дополнительного количества восстановителей и высокого удельного расхода электроэнергии.A known method for the preparation of the charge in which the ore concentrate together with the fluxes is melted and reduced in a cyclone furnace. The process temperature can reach 1900 ° C. However, the resulting mixture during subsequent smelting requires the introduction of a large amount of additional reducing agents and a high specific energy consumption.
По предлагаемому способу в шихту ввод т железорудные концентраты в количестве 9-13% и твердый углерод в количестве 5-10% от веса шихты, а восстановление ведут до получени передельного шлака с образованием 6-10% металлической фазы. Это позвол ет сократить расход электроэнергии И кокса при последуюшей плавке. According to the proposed method, iron ore concentrates in the amount of 9-13% and solid carbon in the amount of 5-10% by weight of the mixture are introduced into the charge, and reduction is carried out to obtain pig slag with the formation of 6-10% of the metal phase. This reduces power consumption and coke during subsequent smelting.
Шихта, состо ш.а из марганцевых и железных концентратов, угл или коксовой мелочи , состав которой задаетс технологическим режимом, сначала подогреваетс до температуры 550-600°С. При этом удал етс влага шихты и летуч.иб, если в шихту был задан уголь, и диссоциирует МпОа. Затем подогрета шихта вводитс в поток гор чих колошниковых газов, которые отсасываютс из печи и частично дожигаютс на техническом кислороде. Здесь шихта подогреваетс The mixture consisting of manganese and iron concentrates, coal or coke breeze, the composition of which is set by the process conditions, is first heated to a temperature of 550-600 ° C. This removes the moisture of the charge and volatility, and if coal has been given into the charge, and MpOa dissociates. The preheated mixture is then introduced into a stream of hot flue gases, which are sucked off from the furnace and partially burned out with technical oxygen. Here the charge is heated
до 800-900°С и благодар восстановительной атмосфере высшие окислы марганца и железа восстанавливаютс до закиси. Если в шихту задаютс карбонатные марганцевыеto 800-900 ° C and due to the reducing atmosphere, the higher oxides of manganese and iron are reduced to nitrous oxide. If carbonate manganese is set into the charge
концентраты, то благодар восстановительной газовой среде карбонат марганца диссоциирует с образованием закиси марганца.the concentrates, then due to the reducing atmosphere, manganese carbonate dissociates to form manganese oxide.
Дальнейшее восстановление закиси металлов производитс в циклонной печи, отаплиБаемой гор чим конверсированным природным газом, конверси которого производитс в специальной муфельной горелке на техническом кислороде или гор чем воздушном дутье, обогашенном кислородом. В циклонной печи заканчиваетс восстановление высших окислов до закиси металла, а последн восстанавливаетс частично до металла за счет твердого углерода шихты. В результате образуетс высокофосфористый марганцевыйFurther reduction of the metal oxide is carried out in a cyclone furnace, heated with hot converted natural gas, which is converted in a special muffle burner using technical oxygen or hot air blowing, enriched with oxygen. In a cyclone furnace, the reduction of higher oxides to metal oxide is completed, and the latter is partially reduced to metal due to the solid carbon of the charge. The result is a highly phosphorus manganese.
сплав и малофосфористый передельный шлак, который накапливаетс в горне циклонной печи и выдаетс в электропечь.alloy and low-phosphorus conversion slag, which accumulates in the hearth of the cyclone furnace and is discharged into the electric furnace.
Предмет изобретени Subject invention
2525
Способ подготовки марганцевой шихты,The method of preparation of manganese mixture,
заключаюшийс в подогреве смеси шихтовыхheated mixture of charge
материалов и последуюш,ем ее распитавленииof materials and its subsequent consumption
30 н восстановлении при 1600-1800°С в циклонной печи, отличающийс тем, что, с целью сокращени расхода электроэнергии И кокса при последующей пла1вке, в щихту ввод т Жёлезорудные концентраты в количестве 9-13% и твердый углерод в количестве от веса шихты, а восстаиовление ведут до получени передельного щлака с образование-м 6-10% металлической фазы.30n reduction at 1600-1800 ° C in a cyclone furnace, characterized in that, in order to reduce the consumption of electricity and coke during subsequent commissioning, 9.5 to 13% iron ore concentrates and solid carbon in quantity, are introduced into and the reduction is carried out to obtain a dross slag with a formation of 6-10% of the metallic phase.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1367134A SU369146A1 (en) | 1969-10-03 | 1969-10-03 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1367134A SU369146A1 (en) | 1969-10-03 | 1969-10-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
SU369146A1 true SU369146A1 (en) | 1973-02-08 |
Family
ID=20447639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1367134A SU369146A1 (en) | 1969-10-03 | 1969-10-03 |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU369146A1 (en) |
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1969
- 1969-10-03 SU SU1367134A patent/SU369146A1/ru active
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