硫酸浸取法从硫铁矿烧渣中提取铁的研究

Investigation on Extracting Iron from Pyrite Cinder by Sulfuric Acid Leaching

研究了在常压下采用硫酸浸出法提取硫铁矿烧渣中铁的工艺流程及其主要的参数对铁提取率的影响。实验结果表明 ,影响铁提取率的因素按其重要性排列为 :温度、时间及硫酸质量分数。当硫酸质量分数为 5 5 %、温度 110℃、浸取在 2h以上时 ,铁的提取率近 5 0 %。本方法设备及流程简单 ,成本低 。

Extracting iron from pyrite cinder by sulfuric acid leaching at normal pressure was investigated. The result shows that the arrangement of leaching factors for iron recovery ratio are according to unportance as follows: temperature, time, and acid concentration. The iron recovery ratio is about 50% at the leaching temperature 110?℃ using 55%(w/w) sulfuric acid for 2?h. The extracting method is simple , as well as low price,and no second pollution.