|本期目录/Table of Contents|

[1]余荣旻.赤泥-钛白废酸综合回收中钪的萃取工艺[J].有色金属科学与工程,2017,(04):31-35.[doi:10.13264/j.cnki.ysjskx.2017.04.006]
 YU Rongmin.Technology of extracting scandium in comprehensive recovery of red mud-titanium white waste acid[J].,2017,(04):31-35.[doi:10.13264/j.cnki.ysjskx.2017.04.006]
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赤泥-钛白废酸综合回收中钪的萃取工艺(/HTML)
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《有色金属科学与工程》[ISSN:1674-9669/CN:36-1311/TF]

卷:
期数:
2017年04期
页码:
31-35
栏目:
出版日期:
2017-08-30

文章信息/Info

Title:
Technology of extracting scandium in comprehensive recovery of red mud-titanium white waste acid
作者:
余荣旻
湖南稀土金属材料研究院,长沙410126
Author(s):
YU Rongmin
Hunan Rare Earth Metal Research Institute, Changsha 410126, China
关键词:
赤泥钛白废酸除杂萃取
分类号:
TD952;X753
DOI:
10.13264/j.cnki.ysjskx.2017.04.006
文献标志码:
A
摘要:
针对赤泥-钛白废酸浸出液中钪及主要杂质的特点,采用先除杂后萃取的工艺对溶液中钪进行萃取分离. 首先,将一定量的活性炭加入赤泥-钛白废酸浸出液中,吸附去除浸出液中的硅,硅的去除率可达96.70 %,而钪的去除率仅为1.25 %,这表明活性炭吸附除杂可在保证浸出液中钪含量基本不损失的情况下除去绝大部分的硅. 除硅有效控制了浸出液的胶凝现象,有利于下一步的钪萃取工艺. 在萃取工艺过程中,具体研究了除杂后液的酸度、相比、萃取时间、萃取剂体积分数对钪萃取率的影响. 结果表明,除杂后液酸度以1.81 mol/L较优,既避免有机相乳化,又保证钪的高萃取率;相比在1/10~1/30之间时,钪萃取率达到平衡,但当相比为1/30时,发生乳化,难于分离,因此,相比1/25较优;萃取时间为15 min时,钪的萃取率达到平衡;萃取剂体积分数为15 % P204+ 6 % TBP时,钪的萃取率达到最大值. 在较优的萃取工艺条件下,钪的萃取率达98.80 %.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-02-21
基金项目:国家高技术研究发展计划(863计划)项目(2013AA031002);湖南省科技计划一般项目(2012GK3179)
通信作者:余荣旻(1984- ),女,工程师,主要从事湿法冶金、稀土高纯氧化物、稀土三基色荧光粉、有色金属分析检测方面的研究工作,E-mail: yrmgusen@163.com.
更新日期/Last Update: 2017-08-30