Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 27    No. 11    November 2017

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Removal of tungsten from molybdate solution by Fe-Mn binary oxide adsorbent
Yun-feng SONG1, Li-hua HE1,2, Xing-yu CHEN1, Zhong-wei ZHAO1

1. School of Metallurgy and Environment, Central South University, Changsha 410083, China; 2. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China

Abstract:Considering the different geochemical enrichment behaviors of W and Mo, Fe-Mn binary oxide (FMBO), ferric hydroxide (Fe(OH)3) and manganese dioxide (MnO2) were studied to separate W from molybdate solution, respectively. The experimental results demonstrated that Fe-Mn binary oxide (FMBO) was the most suitable adsorbent for the separation. Under a wide pH (6.9-11.3) region, more than 80%W removal efficiency and less than 3%Mo loss could be obtained. In addition, the Fe-Mn binary oxide adsorbent can be regenerated by treating with 3 mol/L NaOH, and the W adsorption efficiency was retained after five adsorption-desorption-regeneration cycles. All these indicate that the Fe-Mn binary oxides have the potential for the separation of W from molybdate solution.

 

Key words: tungsten removal; molybdate solution; Fe-Mn binary oxide; adsorption

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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