复杂多金属铅锌矿综合回收过程中砷锑的脱除技术研究OA

The occurrence forms of arsenic and antimony in complex polymetallic lead-zinc deposits are complicated,mainly in the form of arsenopyrite,stibnite and solid solution,which makes their migration paths diverse and difficult to be effectively removed in the process of mineral processing and metallurgy.Through systematic mineralogical analysis,flotation separation and metallurgical process research,the symbiotic relationship between arsenic and antimony and the main metal minerals and their migration and transformation mechanism were revealed.The highly selective inhibitors were innovatively used to achieve the flotation pre-removal of arsenic and antimony.The recovery rate of arsenic and antimony minerals was reduced to less than 15%,and the recovery rate of main metals was maintained above 85%.The adsorption capacity of the solution deep purification technology based on nano-adsorbent is 45 mg/g for arsenic and 38 mg/g for antimony,and the removal rate is more than 95%,which is much better than the traditional method.The high temperature curing technology forms stable FeAsO4 minerals and vitreous structure by means of mineral phase reconstruction,which makes the removal rate of arsenic and antimony more than 95%.