The Effect of Inorganic Inhibitors on Separation of Lead,Zinc and Sulfur in Low Alkalinity Condition
A copper-lead-zinc mine in Sichuan belongs to the multi-metal sulfide with the feature of easy to concentration but difficult to separation.Silver associated with the minerals are mainly enriched into lead concentrate in dressing process to realize a comprehensive recovery.Due to a large number of pyrite existing in minerals,it is easily floated with the activation of copper ions generated by secondary copper sulfide,which makes lead-zinc-sulfur difficult to separate.For these problems in production,a series of lab tests,small closed-circuit tests and industrial tests are contrasted starting from choosing inorganic inhibitors.The combination of inorganic inhibitors——ZnSO4 YD was ultimately found out with a better suppression on pyrite,and its flotation mechanism was analyzed as well.
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