• captcha

中国科技核心期刊

美国化学文摘社(CAS)数据库

美国EBSCO学术数据库

日本科学技术振兴机构数据库(JST)

期刊导读

首页   >    选矿与冶炼

难处理金矿石加压氧化—氰化提金技术研究

  • 许晓阳
  • 作者单位:
  • 厦门紫金矿冶技术有限公司&低品位难处理黄金资源综合利用国家重点实验室
  • 基金项目:

  • isnull
  • 详细信息:

  • 作者简介:
  • 许晓阳(1986—),男,福建厦门人,工程师,从事有色金属冶金工作;福建省厦门市翔安火炬园舫山南路3号,厦门紫金矿冶技术有限公司,361101;E-mail:378796466@qq.com
  • 通讯作者:
  • isnull
  • 此文档没有上传!

Research on extracting gold from refractory gold ore by POX-cyanidation technique

  • English Author:
  • Xiamen Zijin Mining and Metallurgy Technology Co.,Ltd.&State Key Laboratory of Comprehensive Utilization of Low-grade Refractory Gold Ores
  • Unit:
  • 摘要
  • 在线预览
  • 参考文献

摘要:

贵州某卡林型难处理金矿石高硫高砷,且有机碳含量高,金主要嵌布于硫化物中,采用常规氰化工艺,金浸出率仅为10 %。针对该矿石性质,采用加压氧化—氰化工艺进行处理,小型试验金浸出率提高至94.0 %以上。在小型试验基础上进行中试连续试验,结果表明:在温度220 ℃,矿浆浓度16.4 %~19.0 %,氧分压0.6~0.8 MPa,停留时间45~60 min时,硫氧化率>95.0 %,且不论氧化液是否返回,金浸出率平均可达94.0 %以上。

关键词:

难处理金矿;加压氧化;碳质物;卡林型;氰化;中试连续试验

Abstract:

A refractory gold ore in Guizhou contains high arsenic,sulphur and organic carbon content,and the gold is mainly embedded in the sulfide minerals which leads to a low gold leaching rate 10 % by traditional cyanidation process.According to the ore property,the refractory gold ore was treated by POX-cyanidation process,and the leaching rate of gold can increase to over 94.0 %.The pilot continuous test based on small-scale test shows that with the temperature of 220 ℃,pulp density of 16.4 %-19.0 %,oxygen partial pressure of 0.6-0.8 MPa and retention time of 45-60 min,the oxidation rate of S can be over 95.0 %,and the leaching rate of gold can be over 94.0 % whether the oxidation liquid is recycled or not.

Keywords:

refractory gold ore;POX;carbonaceous material;carlin type;cyanidation;pilot continuous test