哥伦比亚某高硫氰化尾渣回收锌试验研究  

Experimental Study on Recovery of Zinc from High Sulfur Cyanide Tailings in Colombia

作　　者：沈卫卫 刘鹏 赵军生 汪鹤鸣[2] SHEN Weiwei;LIU Peng;ZHAO Junsheng;WANG Heming(Xinjiang Zijin Zinc Industry Co.,Ltd.;Zijin Mining Group Co.,Ltd.)

机构地区：[1]新疆紫金锌业有限公司 [2]紫金矿业集团股份有限公司

出　　处：《现代矿业》2023年第3期154-157,161,共5页Modern Mining

摘　　要：哥伦比亚某氰化尾渣含硫50.52%、含锌1.62%、含金0.79 g/t、含银16.1 g/t,若直接抛废,将造成金属资源的浪费。为回收该氰化尾渣中的锌,采用预处理—浮选工艺流程,通过Inco法预处理矿浆,矿浆中的氰根离子浓度从0.35 g/L降至0.005 g/L以下,减少了氰根离子对后续锌浮选的影响。氰化尾渣预处理后选锌,在1粗1精1扫条件下,获得的锌精矿含锌40.06%、含金3.73 g/t、含银176.90 g/t、锌作业回收率93.42%、金回收率3.03%、银回收率28.00%,实现了氰化尾渣中有价金属的综合回收。A cyanidation tailings in Colombia contains 50.52%sulfur,1.62%zinc,0.79 g/t gold and 16.1 g/t silver.If it is directly discarded,it will cause waste of metal resources.In order to recover zinc from cyanide tailings,a pretreatment-flotation process was adopted.The pulp was pretreated by Inco method.The concentration of cyanide ion in the pulp was reduced from 0.35 g/L to less than 0.005 g/L,which reduced the influence of cyanide ion on subsequent zinc flotation.After pretreatment of cyanide tailings,under the condi⁃tion of one roughing,one cleaning and one scavenging for zinc separation,the zinc concentrate containing zinc 40.06%,gold 3.73 g/t,silver 176.90 g/t,zinc recovery 93.42%,gold recovery 3.03%and silver recovery 28.00%was obtained.The comprehensive recovery of valuable metals in cyanide tailings was realized.

关 键 词：氰化尾渣 预处理 Inco法 锌回收 

分 类 号：TF813[冶金工程—有色金属冶金] X75[环境科学与工程—环境工程]