从钛白水解废酸中回收钪及钪钛的分离研究
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- 英文论文题名：Study on Scandium Recovery from Hydrolyzed Sulfuric Acid of Titanium Dioxide Production and Separating Titanium from the Scandium-loaded Organic Solvent
- 论文作者：李玉华 ; 李青刚
- 英文论文作者：Li Yu-hua ; Li Qing-gang ; School of Metallurgy & Environment ; Central South University
- 年：2016
- 作者机构：中南大学冶金与环境学院;
- 论文关键词：钛白水解废酸 ; 萃取 ; 钪 ; 钛 ; 洗脱
- 英文论文关键词：hydrolyzed sulfuric acid of titanium dioxide production ; extraction ; scandium ; titanium ; elution
- 会议召开时间：2016-09-06
- 会议录名称：2016全国稀土冶炼与环境保护技术交流会会刊
- 语种：中文
- 分类号：TF845;TF823
- 学会代码：ZGXT
- 会议名称：2016全国稀土冶炼与环境保护技术交流会
- 会议地点：中国广西南宁
- 主办单位：中国稀土学会环境保护专业委员会、中国稀土学会化学和湿法冶金专业委员会、中国稀土学会火法冶金专业委员会
- 学会名称：中国稀土学会
- 页数：5
- 文件大小：431k
- 原文格式：O
- 会议级别：全国
摘要
研究了从模拟钛白水解废酸中回收钪及钪与钛的分离。试验考察了料液酸度、萃取剂浓度、相比、萃取平衡时间、温度等因素对钪萃取的影响,测出了钪的萃取等温线,在此基础上进行了串级逆流萃取模拟试验。针对主要含钪钛的负载有机相,发现了合适的洗脱剂EL,并进行了串级逆流洗脱试验。试验结果表明:P204+TBP+煤油的萃取体系基本可以实现钪的回收富集,而且初步分离了料液中的钛,铁等杂质金属元素。在后续的洗脱试验中,经过三级逆流洗脱,钛的洗脱率可达到98%,而钪的损失率仅为4%,钪钛的分离效果明显。
Scandium recovery from hydrolyzed sulfuric acid of titanium dioxide production and separating titanium from the scandium-loaded organic solvent has been studied.The effects of acidity of solution,the concentration of extractant,equilibrium time,temperature on the extraction of scandium are investigated,and the isothermal of scandium is measured.Based on the single stage extraction experiments,the experiments extraction by batchwise countercurrent multi-stage operation are conducted.According to scandium and titanium-loaded organic solvent,find suitable eluent,the experiments elution by batchwise countercurrent multistage operation are conducted.The results indicate that the di-(2-ethylhexyl) phosphoric acid(P204)-tributyl phosphate(TBP)-sulfonated kerosene system not only could realize recovery and enrichment of scandium but also preliminarily separates other metallic elements,such as titanium,iron and so on.In the experiments of elution,the titanium elution efficiency can reach 98%through 3 stage countercurrent elution,while the scandium loss ratio is 4%,the separation effect of scandium and titanium is obvious.
Scandium recovery from hydrolyzed sulfuric acid of titanium dioxide production and separating titanium from the scandium-loaded organic solvent has been studied.The effects of acidity of solution,the concentration of extractant,equilibrium time,temperature on the extraction of scandium are investigated,and the isothermal of scandium is measured.Based on the single stage extraction experiments,the experiments extraction by batchwise countercurrent multi-stage operation are conducted.According to scandium and titanium-loaded organic solvent,find suitable eluent,the experiments elution by batchwise countercurrent multistage operation are conducted.The results indicate that the di-(2-ethylhexyl) phosphoric acid(P204)-tributyl phosphate(TBP)-sulfonated kerosene system not only could realize recovery and enrichment of scandium but also preliminarily separates other metallic elements,such as titanium,iron and so on.In the experiments of elution,the titanium elution efficiency can reach 98%through 3 stage countercurrent elution,while the scandium loss ratio is 4%,the separation effect of scandium and titanium is obvious.
引文
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[3]陈华,田从学.国内硫酸法钛白生产现状及存在问题[J].攀枝花学院学报,2014,31(1):99-102.
[4]邹建新.中国钛白产业发展回顾及未来20年市场展望[J].钛工业进展,2011,(3):1-5.
[5]唐振宁钛白粉的生产与环境治理[M].北京:化学工业出版社,2000.
[6]T建伟.钛白废酸综合利用的研究[D].哈尔滨工业大学,2009.
[7]张益都.硫酸法钛白粉生产技术创新[M].化学工业出版社,2010.
[8]刘卫,杨泱,崔小震.钛白废酸提钪工艺中锆钪分离的研究[J].稀土,2014,35(6):79-82.
[9]袁海滨,廖军,乐晓兵等.提高钛白废酸提钪萃取选择性的研究[J].无机盐工业,2014,46
[10]徐廷华,邓佐国,李伟.从钨渣浸出液中提取钪的研究[J].江西有色金属,1997,11(4):
[11]钟学明.伯胺萃取法提取氧化钪的工艺研究[J].稀有金属,2002,26(6):527-529.
[12]冯彦琳,王靖芳,王海林.用萃取法从硫酸法钛白废酸中提取钪[J].稀土,1997,18(2):
[13]张超.从钛白水解母液中富集钪[J].煤炭与化工,2013,36(7):80-81.
[14]Weiwei Wang.Yoko Pranolo,Chu Yong Cheng.Recovery of scandium from synthetic red mud leach solutions by solvent extraction with D2EHPA[J].Separation and Purification Technology,2013,(108):96-102.
[15]徐铜文.乳状液膜法提取硫酸法钛白废液中微量钪的研究[J].稀有金属,1994,18(4):245-248.
[16]詹海鸿,梁焕龙,樊艳金等.硫酸法钛白废酸二段中和处理并沉淀钪[J].有色金属,2014,(8):45-47.
[17]李海,童张法,陈志传等.钛白废酸中钪的提取工艺改进[J]无机盐工业,2006,38(9):51-53.