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现代矿业 ›› 2023, Vol. 39 ›› Issue (03): 154-157.

• 矿物加工工程 • 上一篇    下一篇

哥伦比亚某高硫氰化尾渣回收锌试验研究

沈卫卫1,2 刘鹏2 赵军生2 汪鹤鸣2   

  1. 1. 新疆紫金锌业有限公司;2. 紫金矿业集团股份有限公司
  • 出版日期:2023-03-25 发布日期:2023-05-05

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

SHEN Weiwei1,2 LIU Peng2 ZHAO Junsheng2 WANG Heming2   

  1. 1. Xinjiang Zijin Zinc Industry Co.,Ltd.;2. Zijin Mining Group Co.,Ltd.
  • Online:2023-03-25 Published:2023-05-05

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。

关键词: 氰化尾渣, 预处理, Inco法, 锌回收

Abstract: 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 condition 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.

Key words: cyanide tailings, pre-processing, Inco-method, zinc recovery