锌阳极泥—硫化锌精矿中锰锌分离的焙烧参数研究

通过锌阳极泥与硫化锌混合焙烧—热水浸出工艺对锌阳极泥中的锰进行了提取,研究了焙烧气氛、物料配比、焙烧温度、焙烧时间等对锰提取率的影响。结果表明：锌阳极泥与硫化锌精矿质量比1∶1.5,焙烧温度760℃,焙烧时间2 h,浸出温度80℃,浸出时间2 h,液固比5∶1,锰的浸出率在80%以上。

Selective Leaching Manganese Sulfate from Zinc Electrolysis Anode by Zinc Sulfide Concentrate Reduction Roasting Method

The zinc electrolysis anode was decomposed by zinc sulfide concentrate at a certain temperature. Then manganese was selectively leached out in the form of manganese sulfate in hot water. The specific influencing factors such as particle size and the mass ratio of raw materials, roasting temperature and time, etc. were examined and discussed to obtain an optimum process condition. Results showed that zinc anode slime/zinc sulfide keeps its rate of 1：1.5 with roasting temperature 760℃, roasting time 2 h and liquid/solid ratio 5： 1. And the leaching rates of manganese is over 80%.