Arsenic-zinc polymetallic ore processing method using waste residue

Abstract

The present application relates to a kind of processing method of arsenic-containing zinc polymetallic ore with waste residue, it is suitable for high content of pyrrhotite, arsenopyrite is closely embedded in complex polymetallic sulfide ore of marmatite and chalcopyrite.The method is through modified carbide slag slow-release type pH adjustment, hot galvanizing slag acid leaching liquid replaces zinc sulfate, humic acid sodium-citric acid-sodium silicate optimal proportion synergistic inhibition, EDTA-disodium complexing activator, carbonized sodium cyanurate-CMC-guar gum organic inhibitor and sweet potato starch-guar gum selective flocculant synergistic effect, total lime consumption in whole process is reduced to 1300~2000g / t, utilization rate of carbide slag is improved, zinc sulfate raw material cost is reduced, arsenic content in zinc concentrate is reduced to below 0.3%, zinc grade is >48%, arsenic concentrate grade is >40%, realize the beneficial effects of low alkali consumption, high selectivity, high comprehensive recovery rate and high-value utilization of industrial solid waste.