METHOD OF CHARGE PREPARATION FOR FERROMOLYBDENUM PRODUCTION Russian patent published in 1997 - IPC

FIELD: metallurgy. SUBSTANCE: method of charge preparation for ferromolybdenum production provides for mixing of molybdenum-bearing material, iron scrap, iron-bearing material, slag forming material and reducer. Mixture in arbitrary ratio of gas flow filtration wastes products from aggregate for gas-thermal molybdenization of pieces by spraying and molybdenum slime is used as molybdenum-bearing material. Mixture of powder-shaped lime, dispersion wastes from alloy crashing and aluminum cuttings in mass ratio of 1 : 0.8 : 0.15 is used as slag forming material and reducer. Iron dust from shot-blasting apparatuses is used as iron-bearing material. The components are mixed with liquid wastes of itching reagent, for example, ferric chloride till paste-shaped state. Then paste is dried till it breaks for separate lumps, load in arc furnace under layer of iron scrap with following ratio of mixture components, mass %: gas flow filtration wastes products from aggregate for gas-thermal molybdenization and molybdenum slime 49 - 45; powder-shaped lime, dispersed wastes from alloy crushing and aluminum cuttings 7 - 24; iron dust from shot-blasting apparatuses 3 - 16; liquid wastes of itching reagent 10 - 18; iron scrap 19 - 35. EFFECT: improved process. 1 tbl