In view of characteristics of close associated relationship with each other and owns complicated ore nature and fine dissemination size of valuable mineral for a copper-lead-zinc sulfide ore in Baiyu, the beneficiation tests were carried out by the process of preferential flotation of copper and lead, lead and zinc, pressure leaching of copper-lead mixed concentrate. And by regrinding rougher lead concentrate, new type special collector EM-WB-12 was added. Then, copperlead mixed concentrate mixture with Cu and Pb grade of 5. 15％ and 22. 94％ at a 85.00％ Cu recovery and 53.38％ Pb recovery, lead concentrate with Pb grade of 52. 68％ at a 30. 13％ recovery were respectively achieved. Also, the associated silver in ores was effectively enriched. Taking pressure leaching to Cu - Pb mixed concentrate, got the leaching rate of Zn at 94.36％ and Cu at 91.21％ ,the grade of Pb ofter dressing at 40％. Based on the tests of laboratory, pilot test were organized, The results fully confirm the reliability of those from laboratory tests.%四川白玉铜铅锌共生矿矿石性质复杂,铜铅矿物嵌布粒度极细,铜锌矿物致密共生,分离较为困难.采用铜铅部分混合优先浮选-选铅-选锌-铜铅混合精矿加压浸出分离工艺流程,以EM-WB-12为铜矿物捕收剂进行选矿试验,并在选铅时进行了粗精矿再磨,实验室试验可获得Cu+Pb品位28.09%,铜、铅回收率分别为85.00%、53.38%的铜铅混合精矿,铅品位和回收率分别为52.68%、30.13%的铅精矿以及锌品位和回收率分别为52.72%、73.62%的锌精矿,同时伴生银得到了有效回收.对铜铅混合精矿进行加压浸出,取得了Zn浸出率94.36%,Cu浸出率91.21%的优良指标,渣中Pb脱硫后品位达到40%.在此基础上进行了选矿扩大试验,其试验指标较好地验证了实验室试验结果.
展开▼
