摘要
内蒙古某金矿采用全泥氰化工艺,因原矿性质发生变化,需进行浸出条件优化试验研究。在工艺矿物学研究的基础上,采用响应曲面法考察了氧化钙用量、氰化钠用量、充气量3种因素对金浸出率的影响,建立了拟合方程与响应曲面。结果表明:氧化钙用量、氰化钠用量、充气量对金浸出率影响较大,且三者间有明显的交互作用;在磨矿细度-74μm占90%的条件下,最优浸出条件为氧化钙用量3.330 kg/t、氰化钠用量1.040 kg/t、充气量0.076 m^3/h,此时金浸出率预计可达94.75%。该研究为现场工艺优化提供了技术依据。
The experimental research on the optimization of leaching conditions is necessary for the all-sliming cyanide leaching operation in a gold mine in Inner Mongolia due to the change of raw ore properties. Based on the results of process mineralogy,the effects of CaO dosage,NaCN dosage and aeration rate on gold leaching rate were investigated by Response Surface Methodology and fitting formula and response surface are established. The results show that CaO dosage,NaCN dosage and aeration rate could affect gold leaching rate significantly and these three factors had serious interaction effect. The leaching rate is estimated to reach 94. 75 % under the optimized conditions that particles smaller than 74 μm accounts for 90 %,CaO dosage is 3. 330 kg/t,NaCN dosage is 1. 040 kg/t and aeration rate is0. 076 m3/h. This study provides technical basis for the practical process optimization.
作者
卢臣
张化武
乔永平
白云龙
马忠凯
李沛
曹钊
Lu Chen;Zhang Huawu;Qiao Yongping;Bai Yunlong;Ma Zhongkai;Li Pei;Cao Zhao(Institute of Mining Engineering,Inner Mongolia University of Science and Technology;Sunite Jinxi Gold Mining Co.,Ltd.)
出处
《黄金》
CAS
2020年第4期54-58,63,共6页
Gold
基金
内蒙古自治区2019年科技计划项目(KJJH-201901)
包头稀土高新区科技局“科技创新服务载体项目”(20191213)
内蒙古科技大学优秀青年基金(2017YQL005)。
关键词
金
氰化浸出
响应曲面法
回归分析
浸出率
gold
cyanide leaching
Response Surface Methodology
regression analysis
leaching rate
