化工进展Issue(1)：169-173,186,6.DOI:10.3969/j.issn.1000-6613.2014.01.029
超声波作用下溶剂萃取法分离镧铈元素
Separation of lanthanum and cerium elements by solvent extraction under the effects of ultrasonic
摘要
Abstract
Aiming at the excess ammonia discharge caused by methods of solvent extraction and separation of rare earth elements using ammonia or sodium hydroxide as the saponification agent,this paper investigated the method of using ultrasonic unsaponifiable P204 to extract and separate the lanthanum and cerium elements. This paper examined the effects of the acidity of the feed liquid,the ultrasonic intensity,the ultrasonic intensity on the distribution ratio of lanthanum and cerium,the separation factor of lanthanum and cerium and the saturation extraction capacity respectively. The results showed that when the feed acidity was 5,ultrasonic intensity was at 20 W/cm2,ultrasonic frequency was at 30 kHz,the distribution ratio of lanthanum and cerium,the saturation extraction capacity of lanthanum and cerium and the separation factor between lanthanum and cerium reached the maximum. The saturation extraction capacity were 35 g/L and 19 g/L,and the maximum separation factor between the lanthanum and the cerium was 4.63. The results under infrared spectroscopy showed that ultrasound caused hydrogen bond break in P204 in the solvent extraction and separation of lanthanum and cerium,resulting in, more monomer P204 react with rare earth in the extraction process. Therefore,the saturation extraction capacity of lanthanum and cerium with ultrasonic was greater than that without ultrasonic.关键词
超声波/溶剂萃取/镧/分离系数/饱和萃取容量Key words
ultrasonic/solvent extraction/lanthanum/separation coefficient/saturation extraction capacity分类
化学化工引用本文复制引用
常宏涛,季尚军,李梅,柳召刚,张福顺..超声波作用下溶剂萃取法分离镧铈元素[J].化工进展,2014,(1):169-173,186,6.基金项目
国家杰出青年基金（51025416）、教育部创新团队计划（IRT1065）、国家973计划前期研究专项（2011CB411911）、内蒙古自治区高等学校创新团队发展计划（NMGIRT1104）项目。 （）
