福建某铅锌浮选尾矿再选试验研究  

Experiment Research on Reselection of a Lead-Zinc Flotation Tailings in Fujian

作　　者：李鑫[1,2] 邓荣东 王锦荣[1,2] 陈钦 张承杰[2] 何环银 林建绥 刘想想 LI Xin;DENG Rongdong;WANG Jinrong;CHEN Qin;ZHANG Chengjie;HE Huanyin;LIN Jiansui;LIU Xiangxiang(School of Advanced Manufacturing,Fuzhou University,Jinjiang 362200,China;The Second Geological Exploration Institute,China Metallurgical Geology Bureau,Fuzhou 350108,China;Zijin School of Geology and Mining,Fuzhou University,Fuzhou 350116,China)

机构地区：[1]福州大学先进制造学院,福建晋江362200 [2]中国冶金地质总局第二地质勘查院,福建福州350108 [3]福州大学紫金地质与矿业学院,福建福州350116

出　　处：《金属矿山》2023年第3期127-134,共8页Metal Mine

摘　　要：福建某铅锌浮选尾矿中铅、锌、银的品位分别为0.23%、2.11%、36.3 g/t,其中锌和银有较高回收价值。该尾矿中主要金属矿物为闪锌矿、黄铁矿和方铅矿,非金属矿物以方解石和石英为主。针对矿石特点,采用优先浮选开展工艺优化试验。结果表明:在磨矿细度为-0.074 mm占69.92%的条件下,以石灰为pH调整剂,硫酸锌为抑制剂,乙硫氮为捕收剂,2#油为起泡剂,经1粗3精1扫浮铅,可获得铅品位4.56%、银品位320 g/t,铅回收率15.55%、银回收率6.63%的银铅精矿;针对选铅尾矿,以石灰为pH调整剂,硫酸铜为活化剂,丁基黄药为捕收剂,2#油为起泡剂,经1粗3精2扫浮锌,可获得锌品位37.32%、银品位152 g/t,锌回收率73.25%、银回收率18.80%的锌精矿。试验指标较好,可为该尾矿的综合利用提供数据支撑。The grades of lead,zinc and silver in a lead-zinc flotation tailings from Fujian are 0.23%,2.11%and 36.3 g/t,respectively,among which zinc and silver have high recovery value.The main metallic minerals in the tailings are sphalerite,pyrite and galena,and the non-metallic minerals are mainly calcite and quartz.According to the characteristics of ore,preferential flotation was used to carry out the process optimization test.The results showed that:under the condition of grinding finness of-0.074 mm accounting for 69.92%,using lime as pH regulator,zinc sulfate as inhibitor,ethylthio-nitrogen as collector and 2#oil as foaming agent,silver-lead concentrate with lead grade of 4.56%,silver grade of 320 g/t and lead recovery rate of 15.55%and silver recovery rate of 6.63%can be obtained through one roughing,three cleaning and one scavenging for lead flotation.With lime as pH regulator,copper sulfate as activator,butyl xanthate as collector and 2#oil as foaming agent,zinc concentrate with zinc grade of 37.32%,silver grade of 152 g/t,zinc recovery rate of 73.25%and silver recovery rate of 18.80%was obtained through one roughing,three cleaning and two scavenging for zinc flotation.The test index is good and would provide data support for the comprehensive utilization of the tailings.

关 键 词：铅锌尾矿 尾矿再选 铅锌分离 优先浮选 

分 类 号：TD926.4[矿业工程—选矿]