高铁含锌烟尘浸出工艺研究

对锌烟尘硫酸浸出提取锌工艺条件进行了研究,分别采用正交试验与单因素试验考察浸出酸浓度、液固比、浸出时间、浸出温度对锌烟尘中锌、铁的浸出率的影响。结果表明:较优浸出工艺条件为硫酸浓度150 g/L、液固比7∶1、浸出时间3 h、浸出温度90℃,在较优浸出条件下,锌浸出率可达95%以上。

Study on Leaching Process of High-iron Zinc Dust

The leaching of zinc dust using sulfuric acid as lixivium was studied. The orthogonal experiments and the mono-factor experiments were made to investigate the influence of concentration of sulfuric acid, liquid-to-solid ratio,leaching time, leaching temperature on zinc, iron acid-leaching performance of the zinc dust. The optimal pro- cessing conditions of leaching as follows the concentration of sulfuric acid is 150 g/L,liquid-to-solid ration is 7： 1, leaching temperature is 90℃,leaching time is 3 h. Under these conditions, the leaching percent of zinc is 95%.