江西某铜硫矿石浮选工艺研究

Flotation Process of a Copper-Sulfide Ore in Jiangxi Province

江西某大型铅锌矿山在深部接替资源勘查中探获了资源量达到中型规模以上的铜硫矿石资源。为了合理开发利用该矿石资源,在矿石性质研究和探索试验基础上,采用铜硫混合浮选—铜硫分离浮选工艺对其进行了选矿试验。试验结果表明:原矿磨至-0.074 mm占75%后以石灰为pH调整剂、丁黄药为捕收剂、2号油为起泡剂进行1粗2扫混合浮选,所获混合精矿再磨至-0.038 mm占80%后以石灰为pH调整剂、LP-01为捕收剂进行1粗2精2扫抑硫浮铜分离浮选,可获得铜品位为14.22%、铜回收率为87.58%的铜精矿和硫品位为34.01%、硫回收率为80.84%的硫精矿,从而使矿石中的铜、硫得到较好的综合回收。

A medium-scale copper-sulfide mineral resource was found by deep resources exploration in a large-scale Lead-zinc Mine. In order to exploit them efficiently, beneficiation tests are carried out by adopting the process of copper-sulfide bulk flotation and copper-sulfide separating flotation based on its mineral properties and probe experiments. The results showed that with the grinding fineness of 75% passing 0. 074 ram,lime as pH regulator,butyl xanthate as collector,2＂ oil as frother, mixed concentrate was achieved through one roughing, two-scavenging bulk flotation operation. Copper concentrate with copper grade of 14. 22%, recovery of 87. 58%, and sulfur concentrate with sulfur grade of 34. 01%, recovery of 80. 84% was obtained respectively through one roughing, two cleaning, two scavenging of copper flotation and sulfur depression process at the grinding fineness of 80% -0. 038 mm, with lime as pH regulator, LP-01 as collector. Thus copper and sulfur resources were comprehensively recovered.