FIELD: non-ferrous metallurgy, method is used for purification from arsenic of non-ferrous, rare-earth and noble metals concentrates and ores and intermediate products of their benefication. SUBSTANCE: method provides, that calcining of charge with sulfidizing agent is exercised under temperature of 600 - 700 C in atmosphere of purified circulating gasses with heat delivery by surface heaters under ratio of sulfur to arsenic in charge exceeding 1.5 : 1.0. EFFECT: improved process.
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