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首页   >    选矿与冶炼

某含砷金精矿提金工艺试验研究

  • 作者:
  • 秦春彬|刘丹丹|郭建东|刘永胜
  • 作者单位:
  • 烟台黄金职业学院|山东国大黄金股份有限公司|山东国大黄金股份有限公司|山东国大黄金股份有限公司
  • 基金项目:

  • isnull
  • 详细信息:

  • 作者简介:
  • 秦春彬(1987—),男,山东烟台人,讲师,硕士,研究方向为机电设备及金精矿有价元素综合回收;山东省招远市滨海大道996号,烟台黄金职业学院,265400;E-mail:532584622@qq.com
  • 通讯作者:
  • isnull
  • PDF下载

Experimental study on gold extraction from arsenic-bearing gold concentrate

  • English Author:
  • Yantai Gold Vocational College|Shandong Guoda Gold Co.,Ltd.|Shandong Guoda Gold Co.,Ltd.|Shandong Guoda Gold Co.,Ltd.
  • Unit:
  • 摘要
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  • 参考文献

摘要:

?澈榻鹁蠛52.80 g/t、砷6.31 %、硫21.50 %,是典型的难处理复杂金精矿,采用直接氰化,以及氧化焙烧、两段焙烧预处理后氰化,金回收效果不理想。试验采用三级工艺,即一级还原焙烧、二级酸浸、三级氧化焙烧进行处理,并对试验条件进行了优化。结果表明:在最佳条件下,经还原焙烧—酸浸—氧化焙烧—氰化工艺处理,金浸出率达93.60 %,较两段焙烧—氰化工艺提高6.80百分点,实现了资源的高值化利用,为含砷金精矿中金的高效回收提供技术依据。

关键词:

含砷金精矿;还原焙烧;酸浸;氧化焙烧;氰化

Abstract:

An arsenic-bearing gold concentrate containing 52.80 g/t gold,6.31 % arsenic and 21.50 % sulfur is a typical refractory complex gold concentrate.The recovery of gold was not satisfactory by direct cyanidation and cyanidation after oxidation roasting and two-stage roasting pretreatment.Three-stage process (one-stage reduction roasting,two-stage acid leaching and three-stage oxidation roasting) was used in the experiment,and the experimental conditions were optimized.The results show that under optimal conditions,the gold leaching rate can be 93.60 % after reduction roasting-acid leaching-oxidation roasting-cyanidation treatment,6.80 percentage points higher than that by traditional two-stage roasting-cyanidation process,realizing the high value utilization of resources,providing technical basis for highly efficient recovery of arsenic-bearing gold concentrate.

Keywords:

arsenic-bearing gold concentrate;reduction roasting;acid leaching;oxidation roasting;cyanidation