萃取工艺复杂原液体系除铝效果研究

Study on Aluminum Removal Effect of Complex Solution System in Extraction

以铷铯萃取工艺为例,介绍了萃取前工序萃取原液除铝效果的研究情况,在已使用萃取作为主体工艺的生产中,若再加入不同萃取剂进行除铝的工序,将增加整条生产线的复杂性及成本。认为萃取工艺中宜采用化学法除铝,在总结前人除铝方法的基础上,对适于萃取工艺的复杂溶液体系除铝效果进行研究,通过对除铝试剂的选择、除铝pH范围的确定、氢氧化铝沉淀与再溶解现象的分析等方面进行试验,考察了铝的去除特性,对湿法冶金工业中常用的除铝处理技术的应用方式,提出建议及思路。

Taking the rubidium-cesium extraction process as an example,the research situation of aluminum removal effect of extraction stock solution in pre-extraction process was introduced.In the production that has used extraction as the main process,if different extraction agents are added to remove aluminum,it will increase the complexity and cost of entire production line.It is believed that the chemical method should be used to remove aluminum in the extraction process.Therefore,on the basis of summarizing the previous methods of aluminum removal,the aluminum removal effect of complex solution system suitable for the extraction process in the industrial production of hydrometallurgy was studied.Through experiments on selection of aluminum removal reagents,the determination of pH range of aluminum removal,analysis of aluminum hydroxide precipitation and re-dissolution phenomena,removal characteristics of aluminum were investigated.The suggestions and ideas are put forward for application methods of aluminum removal treatment technology commonly used in hydrometallurgical industry.