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某金精矿焙烧氧化—氰化浸金试验研究

  • 霍明春|陆兆锋|杨晓龙|赵国惠
  • 作者单位:
  • 中国黄金集团有限公司|中国黄金集团有限公司|中国黄金集团有限公司|长春黄金研究院有限公司
  • 基金项目:

  • isnull
  • 详细信息:

  • 作者简介:
  • 霍明春(1986—),男,高级工程师,硕士,从事科研项目管理工作;E-mail:huomingchun@163.com
  • 通讯作者:
  • isnull
  • PDF下载

Experimental study on the roasting oxidation-cyanidation gold leaching process for a gold concentrate

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

摘要:

对甘肃某复杂难处理金精矿进行焙烧氧化—氰化浸金试验研究。通过条件优化试验,确定最佳氧化焙烧工艺参数。在金精矿磨矿细度-0.074 mm占79.24 %,一段焙烧温度为550 ℃、充气含氧量为10 %、焙烧时间为1.0 h,二段焙烧温度为650 ℃、充气含氧量为21 %、焙烧时间为1.0 h的条件下,焙砂中砷、碳和硫的脱除率分别为89.22 %、72.05 %和95.51 %,金浸出率为83.76 %。

关键词:

金精矿;焙烧预处理;氰化浸出;含硫;含砷

Abstract:

Experimental study was carried out on the roasting oxidation-cyanidation gold leaching process for the treatment of a complex and refractory gold concentrate in Gansu.Through condition optimization test,the optimal parameters for the oxidative roasting  are determined.When the gold concentrate has a grinding fineness of -0.074 mm accounting for 79.24 %,the first-stage roasting is conducted at a temperature of 550 °C,with an oxygen content of 10 % in aeration and a roasting time of 1.0 h.The second-stage roasting is conducted at a temperature of 650 °C,with an oxygen content of 21 % in aeration and a roasting time of 1.0 h.Under these conditions,the arsenic,carbon,and sulfur removal rates in the roasted slag 89.22 %,72.05 %,and 95.51 %,respectively,and the gold leaching rate is 83.76 %.

Keywords:

gold concentrate;roasting pre-treatment;cyanidation leaching;sulfur-containing;arsenic-containing