Lin Jirong , Han Fujun, Zhao Liangzhong, Zhang Xiuyan Zhao Fei (Research Institute for Rare Earth Application Technological, Baotou 014010, China; Baotou Huali Rare Earth Co. Ltd. , Baotou 014030, China)
<正> Dy-Fe alloy replace dysprosium in the NdFeB permanent material can improve the performance and productivity and cut the cost. The electrolyte is a binary system of molten DyF3-LiF. Iron is cathode and graphite is anode. The raw material is Dy2O3 oxide. The content of dysprosium is (78 - 85)±1 % in the Dy-Fe alloy made by electroly-zing in the industry producing. In the course of electrolyzing the efficiency of current, the alloy formation and the productivity of rare earths by studying the formation of electrolyte, the electrolyzing temperature, the standards and the current density of cathode, the anode shape etc were studied. The conclusion is that we can produce Dy-Fe alloy (the content of dysprosium is (78-85)±1% ) in this condition, the efficiency of current is greater than 68% ,and the productivity of rare earth is greater than 92% . The content of oxygen, calcium, wolfram is smaller than the content by reducing.
electrolyze; Dy-Fe alloys; experiment; rate earths
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