首页|Enhanced characteristics and mechanism of static magnetic field on ion-absorbed rare earth precipitation
Enhanced characteristics and mechanism of static magnetic field on ion-absorbed rare earth precipitation
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NSTL
Elsevier
Separation of ion-absorbed rare earth elements (REE) by oxalate used as a precipitator is the principal extraction process employed in the mining industry. The oxalic acid precipitator plays the key role in the precipitation process. In this paper, the enhanced effect of a static magnetic treatment applied to the precipitation process of REs was investigated. Compared to the non-magnetization, the results of magnetic processes appeared to be better and its optimal precipitation conditions was obtained at pH value of the precipitation solution at 2,RE2O3: H2C2O4 = 2.5:1, a magnetic strength 400 kA m(-1), a 20 min magnetization time in a magnetized oxalate solution. The dosage of oxalate precipitator is less 5% to that employed in conventional processes conditions with non magnetization while the purity of the rare earth still keeps stable. The electrical conductivity of the oxalate precipitator was increased by magnetization. A possible change in the electron spin of the magnetized precipitator ultimately affected the pace of rare earth precipitation crystallization and growth direction of the rare earth-bearing precipitated crystals. (C) 2016 Published by Elsevier B.V.
Ion-absorbed rare earth elementsMagnetic treatmentPrecipitation process
NSTL
Elsevier
