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英国钍公司研究的分离提纯稀土元素的大多数流程采用各种形式的全回流法。全回流就是将萃取装置每端的回流比调到无限,即将离开装置的溶质再完全重新导入,相应送到进入装置的有关相中经受100%的回流。该公司把处理低品位料液的技术称作[强制进料]技术,就是将水相料液在混合澄清槽规定的一级导入,萃取槽每端的回流比调到在槽内截留选定的
Most of the processes for the separation and purification of rare earth elements studied by the Thor company in England employ various forms of total reflux. Total reflux is the infinite return of the extraction device at each end of the imminent departure from the solute and then completely re-import, corresponding to the relevant phase into the device to withstand 100% of the return. The company refers to the technology of treating low-grade liquid as [forced feeding] technology, which is to introduce the aqueous feed liquid at the level specified by the mixing and settling tank. The reflux ratio of each end of the extraction tank is adjusted to intercept the selected