针铁矿法从铬铁合金硫酸浸出液中除铁  

Removal of Iron from Sulfuric Acid Leaching Solution of Ferrochromium Alloy by Goethite

作　　者：胡国荣[1] 李国[1] 邓新荣[1] 彭忠东[1] 曹雁冰[1] 

机构地区：[1]中南大学冶金科学与工程学院,湖南长沙410083

出　　处：《湿法冶金》2006年第4期198-201,共4页Hydrometallurgy of China

摘　　要：研究了用针铁矿法从铬铁合金硫酸浸出溶液中除铁并回收铬。考察了溶液中铬离子浓度、温度、pH对除铁率及铬损失率的影响。试验结果表明,针铁矿法除铁的最佳条件为反应温度94℃,溶液pH=2．5,溶液中铬质量浓度7．2g/L,搅拌强度200r/min,在此条件下,铁的去除率高达99%,铬的损失率仅15%。Remove of iron from sulfuric acid leaching solution of ferrochromium alloy by goethite is researched. The effects of Cr^3＋ concentration, pH, and temperature on removal of iron were examined. The results show that when Cr^3＋ concentration is 7.2 g/L, temperature is 94℃ and pH=2.5,rate of agitation is 200 r/min, more than 99% of iron is precipitated and only 15% of chromium is lost.

关 键 词：铬铁合金 浸出液 针铁矿法 铁 去除 

分 类 号：TF819.2[冶金工程—有色金属冶金]