一种复杂多金属硫化矿中硫精矿再选优化工艺  

Optimization process for re selection of sulfur concentrate in a complex polymetallic sulfide ore

作　　者：郝泽飞 鲁雯 何永利 景世妍[1] 杨丹琪 HAO Ze-fei;LU Wen;HE Yong-li;JING Shi-yan;YANG Dan-qi(Baiyin Nonferrous Metals Group Co.,Ltd.Mineral Processing Company,Baiyin 730900,China)

机构地区：[1]白银有色集团股份有限公司选矿公司,甘肃白银730900

出　　处：《世界有色金属》2024年第8期104-106,共3页World Nonferrous Metals

摘　　要：由于某多金属铅锌矿选厂脱硫一步扫尾(硫精矿)金属损失严重,脱硫二步作业流程产出的铅锌精矿2品位较低,与分离产出的铅锌精矿1混合拉低了总铅锌精矿品位。为解决这一问题,提高混合铅锌品位,脱硫一步扫尾再浮选,实验室以脱硫粗一扫尾为原矿,脱硫二步开展氧化钙、硫酸铜药剂用量试验,进一步优化脱硫二步粗、扫选工艺。铅锌2改造为活流程的方案(高原矿时铅锌2直接进入铅锌精矿,低原矿时返回脱硫一步精选作业),降低硫精矿中Cu、Pb、Zn的品位,减少金属损失,提高回收率。Due to the serious metal loss in the desulphurization one-step tailing(sulfur concentrate)of a polymetallic leadzinc ore sorting plant,the grade of the lead-zinc concentrate 2 produced by the desulphurization two-step process is low,and the mixing of the lead-zinc concentrate 1 produced by the separation reduces the grade of the total lead-zinc concentrate.In order to solve this problem and improve the grade of the mixed lead-zinc concentrate,the desulphurization one-step tailing and then flotation are adopted in the laboratory.In the second step of desulfurization,the dosage test of calcium oxide and copper sulfate was carried out to further optimize the coarse and sweeping separation process of the second step of desulfurization,and the scheme of transforming lead and zinc 2 into a live process(lead and zinc 2 directly enter the lead and zinc concentrate in the plateau ore,and return to the desulfurization one-step selection operation in the low raw ore),so as to reduce the grade of Cu,Pb and Zn in the sulfur concentrate,reduce metal losses,and improve the recovery rate.

关 键 词：多金属硫化矿 减少金属流失 脱硫硫精矿 

分 类 号：TD952[矿业工程—选矿]