FIELD: methods for recovery of tin, lead, bismuth, zinc and some other nonferrous metals from slag formed in melting of tin concentrates and other tin-containing raw materials. SUBSTANCE: method includes adding to ground tin-containing slags alongside with sulfidizing agent and coal of calcium chloride in the amount of 1.5-2.1 kg per kg of tin contained in slag. Sublimation of tin and its associated elements is effected by chlorine sublimation annealing of mixture at temperature of 800-900 C in reducing atmosphere. EFFECT: reduced consumption of energy and excluded pollution of environment.
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Authors
Dates
1998-07-20—Published
1997-06-24—Filed