Recovering RE with NH<sub>4</sub>Cl Roasting from Bastnasite Ore

The Australasian Institute of Mining and Metallurgy
Q Xin C RuÆan X Shengming Z Zhigeng a
Organization:
The Australasian Institute of Mining and Metallurgy
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4
File Size:
409 KB
Publication Date:
Jan 1, 2000

Abstract

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The optimum defluorinating conditions for Sichuan bastnasite crude ore were determined by orthogonal experiments. Over 95 per cent fluorine in the crude ore was stripped by roasting 30 minutes of the crude ore with Na2CO3/ore =0.25 at 650oC. The stripped fluorine crude ore was further treated by NH4 Cl to recover rare earth. Above 95 per cent rare earth can be leached by water after the stripped fluorine crude ore mixed NH4Cl(NH4Cl/ore =1:1) roasted 1 h at 325oC. At the same time, the rare earth leaching solution contains little Fe, Si and Al. Therefore it is propitious to further purify the solution and recover rare earth.
Citation

APA: Q Xin C RuÆan X Shengming Z Zhigeng a  (2000)  Recovering RE with NH<sub>4</sub>Cl Roasting from Bastnasite Ore

MLA: Q Xin C RuÆan X Shengming Z Zhigeng a Recovering RE with NH<sub>4</sub>Cl Roasting from Bastnasite Ore. The Australasian Institute of Mining and Metallurgy, 2000.

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