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| Research of leaching process and design of leaching equipment for NdFeB waste |
| HUANG Wei-ling，WANG Zhong-feng |
| Faculty of Applied Science， Jiang’xi University of Science and Technology， Ganzhou 341000， China |
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Abstract Since the low automation degree for retrieving rare earths from NdFeB waste and the large fluctuation of product purity at present， it is difficult to ensure safety of production process and running reliability， leading to low recovery index of rare earth. Recycling of rare earths from NdFeB waste relying on hydrochloric priority dissolution method was conducted. The purification process that greatly influences the rare earth leaching loss was experimentally studied， and the technical measures to improve the leaching rate were summarized. The NdFeB waste leaching process was also studied， and finally the extraction equipment was designed. The purity of rare earth recovery is stabilized， the recovery rate is improved， and the production cost is reduced， which has positive signification for automation and green production of NdFeB waste leaching process.
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Received: 06 April 2016
Published: 15 December 2016
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2016, Vol. 26 
