METHOD OF LEANING CONVERTER SLAG OF NICKEL-COBALT PROCESS

摘要

FIELD: metallurgy of nickel and cobalt. ^ SUBSTANCE: proposed method includes reducing-sulfidizing melting in heated unit in presence of sodium sulfate sulfidizing agent. Converter slag is leaned in any heated unit at temperature of from 1350°C to 1500°C. Sodium sulfate is introduced into melt in the amount of 10 to 12%; carbonic reductant is introduced in the amount of 13-15% of mass of slag being leaned. Viscosity of melt and mass of slag are reduced due to reduced melting point. ^ EFFECT: increased extraction of nickel and cobalt into sulfide melt. ^ 3 tbl, 3 ex