富银锰结核银锰分离的试验研究  

Research on Separating Ag and Mn from Silver-rich Manganese Nodules

作　　者：丁先胜[1] 徐本军[1] 徐育[1] 肖臻[1] 

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550003

出　　处：《矿冶工程》2012年第6期90-92,共3页Mining and Metallurgical Engineering

摘　　要：以复合还原剂A+B作为还原剂在硫酸介质下对富银锰结核进行浸出研究。考察了硫酸用量、液固比和反应时间对浸出结果的影响,并对浸出机理进行了探讨。得到最佳的Mn、Ag分离条件为:硫酸35 mL/100 g矿、液固比3∶1、反应时间4 h。在此浸出条件下,锰的浸出率达到90%以上,银的品位从原矿中274 g/t提高到浸出渣中700 g/t,且银的回收率达到95%以上。Experiment was conducted on the leaching of silver-rich manganese nodules in sulfuric acid medium by using compound reducing agent A＋B as reductant.The effects of sulfuric acid consumption,L/S ratio and reaction time on leaching results were investigated,and the leaching mechanism was also discussed.The optimum conditions for separating Mn and Ag were obtained as follows： 35 mL sulfuric acid per 100 g ore,L/S ratio of 3∶1 and reaction time of 4 hours.Under such conditions,the leaching rate of manganese reached above 90%,and the grade of silver improved from 274 g/t in the original ore to 700 g/t in the leaching residue with silver recovery rate reaching above 95%.

关 键 词：富银锰结核 复合还原剂 银锰分离 

分 类 号：TF111[冶金工程—冶金物理化学]