PROCESS OF RECOVERY OF SCANDIUM AND YTTRIUM FROM RED MUD OF ALUMINA PRODUCTION

摘要

FIELD: recovery of rare-earth metals, non-ferrous metallurgy. SUBSTANCE: pulp of red mud is separated by density into light and heavy fractions. Light fraction is subjected to magnetic separation under intensity of magnetic field between 400 and 1000 kA/m. Realization of process makes it feasible to reduce amount of harmful impurities in prepared concentrate and to rise degree of recovery of rare-earth metals, such as scandium and yttrium. EFFECT: increased efficiency of process. 2 tbl