FIELD: metallurgy.
SUBSTANCE: method includes the following: staged loading and fusion penetration of a charge, containing a molybdenum concentrate, ferrous scale, ferrous punching, lime, ferromolybdenum slag, aluminium and separation of metal and slag. At the first stage the charge is loaded with the speed of 680-850 kg/m2·min., containing the molybdenum concentrate, ferromolybdenum slag, ferrous punching, 90-95% of lime from its mass for melting, 65-75% of ferrous scale from its weight for melting and aluminium in the amount of 0.98-1.0 of ferromolybdenum stoichiometrically required for recovery of alloy elements. At the second stage the charge is loaded with the speed of 105-125 kg/m2·min., containing 25-35% of ferrous scale from its weight for melting, 5-10% of lime from its weight for melting and aluminium in the amount of 2.6-3.0 of ferromolybdenum stoichiometrically required for recovery of alloy elements, and the melt is heated under arcs of an electric furnace of 3-5 times of charge melting.
EFFECT: invention makes it possible to increase extraction of molybdenum in an alloy and alloy quality.
6 ex, 1 tbl
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PROCEDURE FOR ALUMINIUM-SILICON-THERMAL PRODUCTION OF FERRO-TUNGSTEN | 2008 |
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METHOD FOR ALUMINOTHERMAL SMELTING OF FERROTUNGSTEN | 1990 |
|
SU1764331A1 |
METHOD FOR PRODUCING FERROMOLYBDENUM | 1994 |
|
RU2110596C1 |
METHOD FOR ALUMINOTHERMAL PRODUCTION OF FERROTITANIUM | 0 |
|
SU922170A1 |
METHOD OF PRODUCING FERROMOLYBDENUM BY METAL-THERMAL PROCESS | 0 |
|
SU1235964A1 |
Authors
Dates
2012-11-27—Published
2010-12-01—Filed