电解锰阳极渣还原浸出锰  

Reductive leaching of manganese from manganese anode slag

作　　者：牛莎莎[1] 王志兴[1] 郭华军[1] 李新海[1] 彭文杰[1] 胡启阳[1] 张云河[1] 

机构地区：[1]中南大学冶金科学与工程学院,长沙410083

出　　处：《中国有色金属学报》2012年第9期2662-2666,共5页The Chinese Journal of Nonferrous Metals

基　　金：湖南省科技计划重大专项(2011FJ1005)

摘　　要：针对电解锰阳极渣难处理、铅含量高的缺点,提出利用桔子皮作还原剂在硫酸体系中还原浸出电解锰阳极渣工艺。以国内某电解锰厂阳极渣为原料,对桔子皮加入量、浸出时间、浸出温度以及硫酸加入量等工艺参数进行探讨和优化。结果表明:在浸出温度为80℃,时间为2 h,固液比为1:4,桔子皮/锰阳极渣质量比为1:5,酸渣质量比为1.2:1的条件下,锰的浸出率可达96%,铅的浸出率仅为0.2%,有效地实现了铅锰分离。实验证明,在硫酸体系中利用桔子皮作还原剂浸出电解锰阳极渣的方法可行。Orange peel was used as reductant for reductive leaching of manganese anode slag, which was featured by intractable treatment and lead-rich, and sulfuric acid was used as leaching solvent. By using manganese anode slag from electrolytic manganese plant as raw materials, the effects of dosage of orange peel and sulfuric acid, leaching time and temperature on the leaching ratio were studied. The results show that the leaching recovery of Mn reaches 96%, while the leaching recovery of Pb is only 0.2% under the conditions of leaching temperature 80 ℃, leaching time 2h, the ratio of solid to liquid 1：4, the mass ratio of orange peel to slag 1：5 and the mass ratio of acid to material 1.2：1. The experiment proves that extracting manganese from anode slag in sulfuric acid using the orange peel as reductant is highly effective.

关 键 词：电解锰阳极渣 桔子皮 还原浸出 

分 类 号：TF111[冶金工程—冶金物理化学]