安徽某铜硫矿选矿工艺流程多方案对比试验研究*

安徽某铜硫矿石原矿Cu含量为0.85%、S含量为15.23%，目前生产上采用的铜硫等可浮出快铜—中矿再磨—铜硫分离流程指标不理想。为了改善分选指标，开展了铜硫混浮粗精矿再磨脱脉石—铜硫分离闭路流程、铜硫混浮出快铜—中矿再磨脱脉石—铜硫分离闭路流程以及铜硫混浮出快铜—中矿再磨—优先浮铜—铜尾浮硫闭路流程浮选效果对比试验，并从浮选指标、浮选药剂成本、现场浮选过程稳定性、选厂改造程度等多方面进行了比较分析，认为铜硫混浮出快铜—中矿再磨—优先浮铜—铜尾浮硫工艺为最佳工艺。

Comparative Experimental Study on Mineral Processing Process of a Copper sulfur Ore from Anhui Province

A copper sulfur ore containing 0.85% Cu and 15.23% S from Anhui Province was treated by "copper and sulfur iso flotation middling regrinding copper and sulfur separation" process,of which the production index was not good enough.In order to improve the production index,tests of three different technologies,"copper and sulfur bulk flotation rough concentrate regrinding copper and sulfur separation" process,"copper and sulfur bulk flotation middling regrinding copper and sulfur separation" and "copper and sulfur bulk flotation middling regrinding copper flotation sulfur flotation" were carried out,of which the tests indexes,reagent cost,stability and plant transformation were compared and analyzed.Results showed that the "copper and sulfur bulk flotation middling regrinding copper flotation sulfur flotation" process was recommended.