老挝某含砷金矿非氰浸出试验研究  

Experimental Study on Cyanide-Free Leaching of Arsenic-Bearing Gold Ore from Laos

作　　者：陈京玉 梁溢强 阚赛琼 CHEN Jingyu;LIANG Yiqiang;KAN Saiqiong(Tianjin Huakan Laos Mining Co.,Ltd.,Tianjin 300160,China;Kunming Metallurgical Research Institute Co.,Ltd.,Kunming 650031,Yunnan,China;National Key Laboratory of New Enhanced Metallurgical Technology for Nonferrous Metals,Kunming 650031,Yunnan,China)

机构地区：[1]天津华勘老挝矿业有限公司,天津300160 [2]昆明冶金研究院有限公司,云南昆明650031 [3]有色金属强化冶金新技术全国重点实验室,云南昆明650031

出　　处：《矿冶工程》2024年第5期124-127,共4页Mining and Metallurgical Engineering

基　　金：天津市“一带一路”科技创新合作项目(18PTWJHZ00080)。

摘　　要：对老挝某含砷含碳金矿进行了非氰浸出试验研究,考察了磨矿细度、矿浆pH值、矿浆浓度(质量分数)、金蝉环保型黄金选矿剂用量对金浸出效果的影响。结果表明:采用过氧化氢预处理可以提升金浸出率;在磨矿细度-0.074 mm粒级占95%、搅拌速度2000 r/min条件下,采用过氧化氢500 g/t对矿浆预氧化处理3 h,然后再添加石灰3000 g/t、金蝉环保型黄金选矿剂5000 g/t,搅拌浸出30 h,尾渣金品位0.25 g/t,金浸出率92.27%,过氧化氢预氧化能使金浸出率提高1.96个百分点。A cyanide-free leaching test was performed for the arsenic-carbon bearing gold ore from Laos,and effects of grinding fineness,pH value of pulp,concentration of slurry,and the dosage of golden cicadas environment-friendly leaching agent for gold on gold leaching effect were investigated.The results show that pre-treatment with hydrogen peroxide can improve the leaching rate of gold.With a grinding fineness of-0.074 mm 95%and an agitating speed of 2000 r/min,the pulp is pre-oxidized with 500 g/t of hydrogen peroxide for 3 h,and then treated by 30 h agitation leaching with addition of lime at an amount of 3000 g/t and golden cicadas environment-friendly leaching agent for gold at 5000 g/t,leading to the residue grading 0.25 g/t Au and gold leaching rate of 92.27%.It is shown that this pretreatment with hydrogen peroxide can make gold leaching rate up by 1.96 percentage points.

关 键 词：非氰浸出 预氧化 助浸剂 含砷金矿 金蝉环保型黄金选矿剂 过氧化氢 浸金 

分 类 号：TD952[矿业工程—选矿]