FIELD: electrometallurgy.
SUBSTANCE: invention relates to electrometallurgy and is intended for use in silicon and ferrosilicon smelting. Shaping materials are continuously fed into the arc ore-thermal furnace, their fusion, carbon-thermal reduction of metals, blowing of gas through hollow electrodes, periodical discharge of melting products through the tap hole of furnace and continuous evacuation of furnace gases through a throat, during melting into zone of electric arc nitrogen is continuously blown as plasma-forming gas at the following ratio: VN2=(0.05–0.20)VCO, where VN2 – the number of injected nitrogen, m3/t of silicon in alloy (0.05–0.20) – empirical coefficient, VCO – amount of furnace gas generated in the furnace, m3/t of silicon in the alloy.
EFFECT: invention makes it possible to considerably intensify the melting process and to reduce specific power consumption per ton of alloy.
1 cl, 1 tbl
Title | Year | Author | Number |
---|---|---|---|
METHOD OF SMELTING INDUSTRIAL-GRADE SILICON AND HIGH-SILICON SORTS OF FERROSILICON | 1994 |
|
RU2086696C1 |
METHOD OF HIGHLY SILICEOUS FERROSILICIUM AND TECHNICAL SILICON HEAT | 1994 |
|
RU2068008C1 |
METHOD OF MELTING HIGH-SILICON FERROALLOY | 0 |
|
SU1382867A1 |
METHOD OF PRODUCING SILICON | 1994 |
|
RU2077482C1 |
METHOD OF PRODUCING FERROSILICON IN CLOSED ORE-THERMAL FURNACES | 2019 |
|
RU2714561C1 |
ALLOY DEPHOSPHORISATION METHOD | 2006 |
|
RU2345147C2 |
METHOD OF SMELTING OF CRYSTALLINE SILICON OR HIGH- SILICON GRADES OF FERROSILICON IN ROTATING ORE-SMELTING ELECTRIC FURNACES | 1994 |
|
RU2057710C1 |
METHOD OF MELTING CARBON FERROMANGANESE FROM POOR ORES | 0 |
|
SU1157107A1 |
BATCH FOR PRODUCING FERROSILICON | 0 |
|
SU998558A1 |
METHOD OF FERROSILICON PRODUCTION | 2012 |
|
RU2509160C2 |
Authors
Dates
2020-03-17—Published
2019-10-23—Filed