钛渣酸解液制取水合TiO_2及杂质行为研究  

Research on the Preparing Hydrated TiO_2 from Acid-Leach Liquor of Ti-bearing Slag and the Behavior of Impurities

作　　者：刘晓华[1] 隋智通[2] 

机构地区：[1]内蒙古工业大学化工学院,内蒙古呼和浩特010062 [2]东北大学材料与冶金学院,辽宁沈阳110006

出　　处：《矿产综合利用》2005年第6期12-16,共5页Multipurpose Utilization of Mineral Resources

基　　金：国家自然科学基金资助项目(50234040)

摘　　要：研究了直接水沸法从含钛高炉渣和硫酸反应得到的酸解溶液中提取水合TiO2的新工艺,并通过正交实验确定了最佳工艺条件,即水解温度100℃、陈化时间20h、酸度系数1.1、陈化温度20℃、TiO2浓度101.50g/L、水解时间140m in。水解后溶液用于循环酸解,除去杂质富集浓缩后可得到硫酸铝产品,其纯度以A l2O3计为16.5%。A new technology for extracting hydrated TiO2 by boiling acid-leach liquor produced by H2SO4 leaching of Ti-bearing BF slag was researched. The optimal technological conditions determined by orthogonal experiment were as follows ：hydrolyzing temperature 100℃, ageing time 20h ,acidity coefficient 1. 1, ageing temperature 20℃, TiO2 concentration 101.50g/L, hydrolyzing time 140min. The Al2O3 in the solution was enriched when the acid-leach solution is recycling used in leaching process. The qualified Al2 （SO4 ）3 product, whose purity reached 16.5 % Al2O3 is obtained.

关 键 词：含钛高炉渣 水沸法 硫酸铝 

分 类 号：TF823.2[冶金工程—有色金属冶金]