SEMI-INDUSTRIAL TESTINGS OF THE PROCESS OF CHEMICAL BENEFICIATION OF HARDLY CONCENTRATED TIN POLYMETALLIC RAW MATERIALS

摘要

The results of semi-industrial testings of new beneficiation technology for off-grade polymetallic raw materials by chloridic fuming roasting with consequent hydrometallurgical processing of fumes are presented. It is shown that Sn, Bi, Sb, In convert in fumes as chlorides and As converts in fime as low-toxic hard-soluble sulfides during beneficiation of sulfidic-quartz tailings at finishing plant of Novosibirsk Tin Integrated Works. Candle-end doesn't content soluble and toxic compounds.