响应曲面法优化NaClO浸出贵州难浸金矿中的金  

Optimization of NaClO leaching process of gold from refractory gold ores in Guizhou by response surface methodology

作　　者：许才武 蒋中刚 唐道文[1] 袁鑫 邹涛 邱洋 XU Caiwu;JIANG Zhonggang;TANG Daowen;YUAN Xin;ZOU Tao;QIU Yang(College of Materials and Metallurgy,Guizhou University,Guiyang 550025,China;Guizhou Zijin Mining Company Limited,Qianxinan 562205,Guizhou,China)

机构地区：[1]贵州大学材料与冶金学院,贵阳550025 [2]贵州紫金矿业股份有限公司,贵州黔西南562205

出　　处：《贵金属》2023年第2期62-68,共7页Precious Metals

基　　金：贵州省科技计划项目(黔科合基础[2019]1412号)。

摘　　要：采用响应曲面法(RSM)优化NaClO浸出贵州难浸金矿中的金,探究了NaClO浓度、温度、液固比、pH值4个因素之间的交互作用及其对金浸金率的影响,并进行了参数优化。RSM分析表明,各因素对金浸出率的显著程度为:NaClO浓度>液固比>pH>温度,NaClO浓度和pH之间的交互作用较为显著;得到较优的浸金工艺条件为:反应时间3h,NaClO浓度0.9mol/L,初始pH=13.4,液固比8.2,温度27℃,在此条件下金的浸出率为93.4%。The response surface methodology(RSM)was used to optimize NaClO leaching process of gold from the refractory gold ores in Guizhou,and the interaction among four factors,namely,NaClO concentration,temperature,liquid-solid ratio and pH,and their effects on the gold leaching rate were investigated,and the parameters were optimized.RSM analysis showed that the significant order of each factor on the gold leaching rate was NaClO concentration>liquid-solid ratio>pH>temperature,and the interaction between NaClO concentration and pH was more significant.A good gold leaching rate of 93.4%were achieved under the condition as follows:a reaction time of 3 h,NaClO concentration of 0.9 mol/L,pH=13.4,liquid-solid ratio of 8.2,and temperature of 27℃.

关 键 词：难浸金矿 NACLO 响应曲面法 优化 

分 类 号：TF831[冶金工程—有色金属冶金]