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第三冶炼厂一分厂,试验成功了用胺型萃取剂N—235的液-液萃取技术,代替了原来的一般化学净化、压滤、离子交换除杂质的净化流程。在用镍基合废料生产镍的过程中,由于采用了N—235作萃取剂,使产品质量由原来的2号镍上升到1号镍,并且消除了大量的铁、钴、铜渣,生产周期大大缩短,金属镍的直接回收率比原来提高了30％左右,同时为净化操作过程的机械化自动化提供了良好的条件。
A third smelter plant, the successful test with amine-based extractant N-235 liquid - liquid extraction technology, instead of the original general chemical purification, pressure filtration, ion exchange purification of impurities in the process. In the production of nickel-based scrap nickel, due to the use of N-235 as extractant, so that the quality of the product from the nickel up to nickel No. 1, and eliminate a lot of iron, cobalt, copper slag, production The cycle is greatly shortened, and the direct recovery rate of nickel metal is about 30% higher than that of the original one. At the same time, good conditions are provided for mechanization and automation of purification operation.