Experimental Study Of New Inhibitors Of Copper Arsenic Separation

In the wake of the continuos development and utilization of copper mineral, poverty,subsection, disarray of copper mineral resources becoming blindingly obvious,which makeminerals disseminated increasingly conmplex. It’s unfavourable to copper smelting with Copperconcentrate containing arsenic，and it also influence the recovery of valuable metal.This articlemake a copper-gold-arsenic ore as research objects,has caried out the study of a new type ofarsenopyrite inhibitors on dressing technology of the ore.The article carried through lots of experiment by using general and new-type inhibitor onchalcopyrite,minal of arsenopyrite and manually mixed ore.The researches shows that,under theciroumstances without collector and butyl xanthate in the flotation system,at pH=9, the flotabilityof differences between chalcopyrite and arsenopyrite shows obviously;Cu²⁺activatedarsenopyrite obviously,and QY-03made a preferable inhibition of the arsenopyrite whichactivated by Cu²⁺; but it has no effect on chalcopyrite; the manually mixed ore which mixed byarsenopyrite and chalcopyrite in a ration of one to one showed preferable separtion effect withQY-03,when the dosage of QY-03was more than10mg/L, we can get the product in which therecovery percent of copper was96.15%and the recovery percent of arsenopyrite was2.96%.In fact, the ore minerals embedded complex, in allusion to the fine-grained disseminated ofcopper in the ore,we carried out the research which the collector selected and regrinded, andaccording to the best technological parameter of copper and arsenic whole process closed closedcircuit trial,we can get the copper concentrate with Cu grade of22.21%,As grade of0.91%, andCu recovery rate of81.31%,As recovery rate of0.29%,achieved effective segregation betweenchalcopyrite with arsenopyrite.According to the determination of Scanning electron microscope, IR and adsorption,investigated the influence on mineral flotability and mechanism of action. The test of adsorptioncapacity shows: the chalcopyrite which influence by QY-03, arsenopyrite can also absorbed on itssurface; with the increase of PH, arsenopyrite can’t absorbed on the surface of chalcopyrite whichinfluenced by QY-03under the alkaline condition.The test of Scanning electron microscopeshows: QY-03can’t absorbed on the surface of arsenopyrite effectively, but after arsenopyriteinfluenced by QY-03,reagent can absorbed on the surface, combine with the test of adsorptioncapacity, the film of QY-03prevented the adsorption on the surface of the collector inarsenopyrite, it can control arsenopyrite from ascend. The test of IR shows: butyl xanthate canabsorbed on the surface of chalcopyrite after influenced by QY-03, but it effective less; and itmake no difference on the chalcopyrite in the butyl xanthate flotation system; QY-03can makechelation on the surface of arsenopyrite and adsorbed on it, hinder the absorbability of butyl xanthate, so that QY-03can control the rising of arsenopyrite of butyl xanthate in butyl xanthateflotation system.