FIELD: metallurgy, namely manufacture of briquettes from dispersed fractions (5 mm) of silicium-containing ferroalloys. SUBSTANCE: method comprises steps of mixing charge ingredients, pressing briquettes and processing them; using as binder superfinely dispersed silica from system for gas purifying at production of silicium-containing ferroalloys in quantity equal to (3-5)% of charge mass; moistening charge up to (6-8)% for 120-180 seconds directly before pressing by 10-30% with use of water solution of caustic soda. Usage of briquettes at melting low carbon ferrochrome for afterreducing chrome from slag before tapping out of furnace, effectively lowers residual content of Cr2O3 and irreversible losses of chrome together with dump slag. EFFECT: enhanced quality of briquettes, high efficiency of their production, low degree of oxidizing elemental silicium. 1 tbl
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METHOD OF STEEL MAKING | 0 |
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Authors
Dates
2000-09-27—Published
1999-10-19—Filed