Japan developed from a scrap of high purity rare earth extraction technology

Tsutomu Yamaguchi, Japan Iwate University professor functionality JX Nippon Mining and Metals Corporation jointly developed the stone from scrap cars and home appliances magnet high efficiency recovery of rare earth metals technology. The waste was added boron magnet, is heated to 1200 degrees Celsius, the heating of raw material is acidified boron, a mixture of neodymium and dysprosium, iron, and carbon, nickel alloy blocks, etc., and then extracted with hydrochloric acid, such as neodymium, at a temperature of 400 ~ drying temperature of 500 degrees for 1 hour. According to the experiment, the recovered rare earth metal up to 99.5% purity.

Previously, researchers have been hand-stripped abandoned nickel, crushed after adding hydrochloric acid solution to recycle rare earth metals. However, due to hand and an acid reaction, recovery time takes a full day. The new technologies do not peel off due to nickel can be recovered with a half-time completion, and recovery costs.

Professor Yamaguchi current problem is how to remove harmful substances when recovered, once the issue is resolved that the technology will soon be able to get practical.


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