FIELD: mining industry. SUBSTANCE: metal-containing sulfides and arsenides are subjected to suspension burning at 600-750 C in reactor space where finely divided lime for absorbing mainly all sulfur and arsenic oxides formed under burning is homogeneously suspended all over the reaction space. Sulfur and arsenic oxide absorption is improved by maintaining minimum quantity of free oxygen in off-gas. EFFECT: enhanced efficiency of process. 6 cl, 4 dwg, 3 tbl
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