摘要
研究了从铬渣常压硫酸浸出液中沉针铁矿的过程。考察了温度、pH值、反应时间和空气流量对除铁率及铬损失率的影响。试验结果表明,反应时间和空气流量对除铁率的影响不显著;在反应温度90℃、pH值为3、搅拌强度150r·min-1、反应时间2h、空气流量0.2m3·min-1的条件下,除铁率超过99.5%,铬的损失率仅为17%。
Precipitation process of the goethite from Chromium sulfuric acid leaching solution was investigated. The effects of temperature ,pH, reactive time and volume of air flow on removal of iron were examined; Experimental results indicated that the effect of reactive time and volume of air flow on the rate of iron removal is not significan. On the optimum condition of iron precipitation： temperature90℃ ,pH value is 3,rate of agitation is 150 r ·min^-1,reactive time is 2h,air flow is 0.2 m3·min^-1, the ratio of iron removal exceeds 99.5% ,only 17% of chromium is lost.
出处
《化学工程师》
CAS
2009年第12期60-61,71,共3页
Chemical Engineer
关键词
碱式硫酸铬
浸出液
除铁
针铁矿法
basic chromium sulfate
leaching solution
Iron Removal
goethite
作者简介
陈建（1984-），男，四川人，硕士研究生，主要研究方向：无机工艺。
导师简介：杨虎（1967-），男，四川人，教授，硕士，硕士生导师，主要研究方向：无机工艺、流态化工艺。
