某铜锌多金属硫化矿石选矿工艺试验研究

Experimental study on the beneficiation technology for a copper-zinc polymetallic sulfide ore

某铜锌多金属硫化矿石含铜0.38%、锌1.69%、硫12.48%,铜、锌、硫为主要有价回收元素。为实现铜、锌、硫的有效分离回收,开展了选矿工艺流程及药剂制度试验研究。结果表明:采用铜锌硫顺序优先浮选工艺,即优先选铜、再选锌、最后选硫工艺,在Z-200作为选铜捕收剂,硫酸锌和亚硫酸钠组合作为锌抑制剂,石灰作为硫抑制剂,乙基黄药和丁基黄药作为选锌捕收剂的条件下,闭路试验获得了铜精矿铜品位21.95%、铜回收率80.52%,锌精矿锌品位45.29%、锌回收率83.22%,硫精矿硫品位49.79%、硫回收率85.02%的试验指标。

A copper-zinc polymetallic sulfide ore contains 0.38%copper,1.69%zinc,and 12.48%sulfur,of which copper,zinc,and sulfur are the main valuable elements for recovery.To achieve effective separation and recovery of copper,zinc,and sulfur,experimental research on the ore-dressing process and reagent regime was carried out.The results showed that using a copper-zinc-sulfur preferential flotation process,that is,separating copper first,then zinc,and finally sulfur,with Z-200 as the copper collector,zinc sulfate and sodium sulfite combination as the zinc depressant,lime as the sulfur depressant,and ethyl xanthate and butyl xanthate as the zinc collector,closed-circuit experiments obtained a copper grade of copper concentrates of 21.95%,a copper recovery rate of 80.52%;a zinc grade of zinc concentrates of 45.29%,a zinc recovery rate of 83.22%;and a sulfur grade of sulfur concentrates of 49.79%and a sulfur recovery rate of 85.02%for experimental indicators.