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[1]荣旻.赤泥-钛白废酸综合回收中钪的萃取工艺研究余荣旻[J].有色金属科学与工程,2017,(04预):36-40.
 YU Rong-min.Technology of Extracting Scandium in the Comprehensive Recovery of Red Mud-Titanium White Waste Acid[J].,2017,(04预):36-40.
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赤泥-钛白废酸综合回收中钪的萃取工艺研究余荣旻(/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期预
页码:
36-40
栏目:
出版日期:
2017-07-30

文章信息/Info

Title:
Technology of Extracting Scandium in the Comprehensive Recovery of Red Mud-Titanium White Waste Acid
作者:
荣旻
(湖南稀土金属材料研究院,湖南 长沙410126)
Author(s):
YU Rong-min
(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:
-
DOI:
-
文献标志码:
-
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、萃取剂体积分数、相比、萃取时间对钪萃取率的影响。结果表明,除杂后液酸度以1.81 mol?L-1为最佳,既避免了有机相乳化,又保证了钪的高萃取率;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为最佳;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。在最佳的萃取工艺条件下,钪的萃取率达98.80%。

参考文献/References:

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备注/Memo

备注/Memo:
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更新日期/Last Update: 2017-04-14