METHOD OF PROCESSING ANTIMONIC-TIN CONCENTRATE BY VACUUM DISTILLATION

摘要

FIELD: metallurgy.;SUBSTANCE: invention relates to metallurgy of non-ferrous metals and can be used in separation of components of Sb-Sn alloy (antimony-tin concentrate). Concentration of antimony-tin concentrate by vacuum distillation is performed. At that, selective separation of stibium from tin is carried out by antimony subliming during 10 hours at distillation temperature of 846–1542 K and pressure of 0.133–13.3 Pa to produce condensate of antimony and crude tin in still residue. Antimony content in the antimony condensate is 95–99.9 mol. %. and tin 7.7⋅10^-6–15.1 mol. %.;EFFECT: technical result consists in improvement of selectivity of separation of stibium and tin by vacuum distillation.;1 cl, 1 tbl