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投稿时间：2013-12-19 修订日期：2013-12-23 录用日期：2013-12-24 网络发布日期：2014-07-21
投稿时间：2013-12-19 修订日期：2013-12-23 录用日期：2013-12-24 网络发布日期：2014-07-21
中文摘要: 用石灰石粉对硫酸法钛白废酸进行二段中和处理。一段中和至pH 1.5，产生大量白石膏；二段中和时，钪的沉淀率随二段中和终点pH、温度和陈化时间的增加而增加。二段中和最优条件为：二段中和终点pH 5.0，温度60 ℃，陈化时间1.5 h，钪沉淀率达95%。二段渣的主要物相为CaSO4?2H2O；Sc(OH)3为半透明胶状沉淀物，粒径500 nm左右，形状不规则，具有团聚、分布不均的特性。
Abstract:Waste vitriol in titanium dioxide production was treated by two-stage neutralization with limestone. A lot of white gypsum was produced in first stage neutralization with pH value of 1.5. The precipitation rate of scandium rised with increase of end-point pH value, temperature and ageing time in second stage neutralization. The precipitation rate of scandium is 95% under the optimal conditions of second stage neutralization including end-point pH value of 5.0, temperature of 60 ℃, and ageing time of 1.5 h. The main phase of second stage slag is CaSO4?2H2O. Presented as translucent and gelatinous precipitate with 500 nm in diameter, Sc(OH)3 has characteristics of irregular shape, agglomeration and non-uniform in distribution.
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基金项目:广西科学研究与技术开发计划项目（桂科攻11107021-1）
| Author Name | Affiliation | |
| Haihong Zhan | Guangxi Research Institute of Metallurgy | zhanhaihong@126.com |
| Huanlong Liang | ||
| Yanjing Fan | ||
| Taiyuan Huang | ||
| Danqi Guo |
引用文本：
詹海鸿,梁焕龙,樊艳金,黄泰元,郭旦奇.硫酸法钛白废酸二段中和处理并沉淀钪[J].有色金属（冶炼部分）,2014(8):45-47.
Haihong Zhan,Huanlong Liang,Yanjing Fan,Taiyuan Huang,Danqi Guo.Two-stage Neutralization Treatment and Precipitation Scandium from Waste Vitriol Solution in Titanium Dioxide Production[J].Nonferrous Metals (Extractive Metallurgy),2014(8):45-47.
詹海鸿,梁焕龙,樊艳金,黄泰元,郭旦奇.硫酸法钛白废酸二段中和处理并沉淀钪[J].有色金属（冶炼部分）,2014(8):45-47.
Haihong Zhan,Huanlong Liang,Yanjing Fan,Taiyuan Huang,Danqi Guo.Two-stage Neutralization Treatment and Precipitation Scandium from Waste Vitriol Solution in Titanium Dioxide Production[J].Nonferrous Metals (Extractive Metallurgy),2014(8):45-47.
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