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序言六十年代以来,国外对熔盐电解稀土氧化物制取稀土金属的研究较多,並取得了很大进展。据报导:美国稀土公司七三年已完成了中间工厂试验,并开始迠造年产25万磅混合稀土金属的2万安培工业电解槽;日本三德金属公司自七○年以来,由国外进口的粗氯化稀土受到限制,而改为从美国大量进口氟碳铈精矿(品位60～70％R_2O_3),把稀土氯化物电解改为稀土氧化物电解,同时造造了几个2万安培的工业电解槽进行生产。
Preamble Sixty years since the foreign countries, rare earth oxides from molten salt electrolysis rare earth metal research and made great progress. It has been reported that Rare earths companies in the United States have completed intermediate factory tests in 1973 and started to manufacture 20,000-amp industrial electrolyzers with an annual output of 250,000 pounds of mixed rare earth metals. Japan’s Sande Metal Company has been importing from abroad since 1970 Of crude chlorinated rare earth was restricted, but instead of importing a large number of bastnaesite concentrate (grade 60-70% R_2O_3) from the United States, the rare earth chloride electrolysis to rare earth oxide electrolysis, while creating a few 20,000 amperes Industrial cell for production.