Recovery of platinum from spent catalysts can meet the comprehensive recycling secondary resources. and enrichment Al2O3 carrier catalyst using matte smelting for pyrite-acid leaching process were studied. In melting process, effects pyrite, CaO, quartz sand, Na2B4O7 dosage on recovery rate Pt investigated. effect H2SO4 concentration, temperature, time, liquid/solid (L/S) ratio enriching effici...