用硫酸从钴土矿中还原浸出钴的试验研究  

Reduction Leaching of Cobalt From Asbolite Ore Using Sulfuric Acid

作　　者：李勇火[1] 杨祥[1] 

机构地区：[1]中国地质大学材料科学与化学工程学院,湖北武汉430074

出　　处：《湿法冶金》2012年第3期149-151,共3页Hydrometallurgy of China

摘　　要：针对琼北地区某钴土矿,以硫酸亚铁和稀硫酸作浸取剂,通过一系列单因素条件试验,考察了温度、时间、硫酸初始浓度、搅拌转速和液固体积质量比对钴浸出率的影响。试验结果表明:在反应温度50℃、浸出时间2h、硫酸初始浓度1.2mol/L、搅拌转速250r/min、液固体积质量比10∶1条件下,钴浸出率可达96.1%。在优化条件下重复试验,钴平均浸出率达满意结果。Leaching of cobalt from an asbolite ore in Joan North using ferrous sulfate and dilute sulfuric acid as leaching agent has been studied by a series of single factor experiments. Effects of temperature, time, sulfuric acid initial concentration, stirring speed and liquid-solid ratio on cobalt leaching are examined. The results show that cobalt of over 96% can be leached under the conditions of reaction temperature of 50 ℃,leaching time of 2 hours,initial concentration of sulfuric acid of 1.2 tool/L, stir speed of 250 r/min and liquid-solid ratio of 10 ： 1. At the optimum conditions,the average leaching rate of cobalt is with satisfactory in the repeat leaching experiments.

关 键 词：钴土矿 硫酸 硫酸亚铁 还原 浸出 钴 

分 类 号：TF816[冶金工程—有色金属冶金]