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金属矿山 ›› 2008, Vol. 38 ›› Issue (03): 103-105+137.

• 矿物工程 • 上一篇    下一篇

含硫试剂对某难处理金精矿的浸出研究

周军,张秋利,兰新哲,宋永辉   

  1. 西安建筑科技大学
  • 出版日期:2008-03-15 发布日期:2011-07-21
  • 基金资助:

    国家“九五”重点科技攻关项目(编号:95-521-03-01)。

Leaching of Refractory Gold Concentrate by Sulfur-Containing Reagents

Zhou Jun,Zhang Qiuli,Lan Xinzhe,Song Yonghui   

  1. Xi'an University of Architecture and Technology
  • Online:2008-03-15 Published:2011-07-21

摘要: 在对某难处理金精矿进行工艺矿物学研究的基础上,用硫脲、硫代硫酸盐、硫氰酸盐和改性石硫合剂等含硫试剂对其进行了浸出试验研究。结果表明,该精矿属典型的黄铁矿与毒砂包裹的难处理金矿,约20%的金被包裹,改性石硫合剂可部分将矿物的包裹氧化,浸出率达80%以上,适用于此矿的浸出,并分析推测了浸出试剂与矿物的作用机理。

关键词: 含硫试剂, 难处理金精矿, 浸出

Abstract: Based on the process mineralogy study of a certain refractory gold concentrate, leaching test was made on this ore by using sulfur-containing reagents such as thiourea, thiosulfate, thiocyanate and modified lime-sulfur synthetic solution (ML). The results show that this ore belongs to typical refractory ore with about 20% gold being enclosed by pyrite and arsenopyrite. ML can partially oxidize the enclosing minerals, resulting in an over 80% gold leaching rate, and therefore, is suitable for the leaching of this ore. The mechanism of the reaction between the leaching agent and the minerals is analyzed and postulated.

Key words: Sulfur-containing agent, Refractory gold concentrate, Leaching