摘要
采用硫化物作助剂还原浸出硫酸烧渣中的三价铁。采用L9(43)四因素三水平正交试验,考察助剂用量、硫酸用量、温度、时间对浸出效果的影响,并确定最佳配比。结果表明:影响的显著顺序为助剂用量>时间>硫酸用量>温度。在下述最佳条件下铁浸取率可以达到87.8%:起始液固比2∶1、搅拌转速1 300r/min、助剂用量17.2g、硫酸23mL、85℃反应3h。
The ferric iron was reductive leached from sulfate slag with sulfide. The effects of leaching agent dosage, sulfuric acid consumption, reaction temperature and time on leaching rate of iron were investigated with L9 （43） orthogonal test. The results show that the sequence of effecting is leaching agent dosage, reaction time, sulfuric acid consumption and reaction temperature. The iron leaching rate reaches 87.8% on the following optimum conditions, ratio of liquid to solid of 2 ： 1, stirring rate of 1 300 r/min, leaching agent dosage of 17.2 g, sulfuric acid consumption of 23 mL, leaching temperature of 85 ℃ and leaching time of 3 h.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2012年第1期9-12,共4页
Nonferrous Metals（Extractive Metallurgy)
基金
国家高技术研究发展计划(863)项目(2006AA06Z132)
上海市重点学科建设项目(B604)
关键词
硫酸烧渣
还原酸浸
硫化物
铁
正交试验
sulfate slagl reductive leachingl sulfide
ironl orthogonal test
