Wang L.,Xuzhou Jinshi Pengyuan Rare Earth Material Factory |
Yan B.,Xuzhou Jinshi Pengyuan Rare Earth Material Factory |
Liu M.,Xuzhou Jinshi Pengyuan Rare Earth Material Factory
Zhongguo Xitu Xuebao/Journal of the Chinese Rare Earth Society | Year: 2015
Taking the 6 kA electrolyzer as the research object, the rare earth electrolysis cell which used different anode structure was analyzed comprehensively by using a combination of experimental verification and numerical simulation. The results showed that the oblique cutting anode could keep the technical indexes which included electrolyzer voltage, utilization ratio of oxide and product percent of pass unchanged and overcame the traditional orthogonal cutting anode that reduced the current efficiency and shortened the life of the graphite crucible with anode consumption in the process of use. The result could be a development of rare earth electrolytic cell in the technology. ©, 2015, Chinese Rare Earth Society. All right reserved.
Liu M.,Xuzhou Jinshi Pengyuan Rare Earth Material Factory |
Wang X.,Xuzhou Jinshi Pengyuan Rare Earth Material Factory |
Wu Y.,Xuzhou Jinshi Pengyuan Rare Earth Material Factory
Zhongguo Xitu Xuebao/Journal of the Chinese Rare Earth Society | Year: 2014
The experiment was mainly aimed at summarizing and analyzing the impurity metals contents at the production of dysprosium metal by controlling the argon quantity and amount of reducing agent Ca in the first reduction process, as well as controlling refining temperature and time in the secondary refining process. The results showed that if the argon gas pressure was too large or too small, there would be adverse effects on the reduction reaction. When the argon gas pressure was set at -0.07 MPa, the obtained metal yield can be controlled to more than 97.5%; if excessive 25.8% Ca was put into the process of the experiment, the obtained metal yield could be controlled to more than 97.5% and the impurities of calcium and iron in the rough metals could be controlled at a low level. When the refining time continued for 40 min and the refining temperature kept at 1500°C, the obtained metal yield reached 99.7%, and at the same time, the content of the impurities such as W, Fe in the metal was relatively low. For the production of high purity dysprosium metal, it is entirely possible to further improve the quality of the products by improving the related process parameters.