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首页   >    选矿与冶炼

含砷金精矿催化压力氧化—氰化提金试验研究

  • 作者:
  • 李健
  • 作者单位:
  • 长春黄金研究院有限公司
  • 基金项目:

  • isnull
  • 详细信息:

  • 作者简介:
  • 李健(1986—),男,吉林白城人,工程师,硕士,从事金的浸出与冶炼研究工作;长春市南湖大路6760号,长春黄金研究院有限公司选冶研究所,130012;E-mail:472263019@qq.com
  • 通讯作者:
  • isnull
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Experimental research on gold extraction from arsenic gold concentrate by catalytic pressure oxidation-cyanidation process

  • English Author:
  • Changchun Gold Research Institute Co.,Ltd.
  • Unit:
  • 摘要
  • 在线预览
  • 参考文献

摘要:

针对某含砷金精矿,进行了催化压力氧化—氰化提金工艺研究,考察了亚硝酸钠用量、氧化温度、硫酸用量、氧分压等对催化压力氧化效果的影响。结果表明:在亚硝酸钠用量50 kg/t,硫酸用量135 kg/t,氧化温度200 ℃,氧分压0.6 MPa,氧化时间2.0 h的最佳条件下,金浸出率为97.65 %;催化压力氧化过程中金溶解率为24.25 %;酸性氧化液采用活性炭吸附,金吸附率达到99.51 %。该工艺可有效处理含砷金精矿,指标较好。

关键词:

催化压力氧化;含砷金精矿;亚硝酸钠;毒砂;氰化

Abstract:

In this paper,the research on gold extraction from arsenic gold concentrate by catalytic pressure oxidation-cyanidation process was conducted,and the influence of sodium nitrite dosage,oxidation temperature,sulfuric acid dosage and oxygen partial pressure on catalytic pressure oxidation performance was investigated.The results show that with optimal conditions:sodium nitrite 50 kg/t,sulfuric acid 135 kg/t,oxidation temperature 200 ℃,oxygen partial pressure 0.6 MPa and oxidation time 2.0 h,the gold leaching rate is 97.65 %.However,the dissolution rate of gold in the process of catalytic pressure oxidation is 24.25 %.Activated carbon was used to adsorb the acid oxidation solution,and the gold adsorption rate reached 99.51 %.This process can effectively treat arsenic  gold concentrate,with good indexes.

Keywords:

catalytic pressure oxidation;arsenic gold concentrate;sodium nitrite;arsenopyrite;cyanidation