自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 6    No. 2    December 1999

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A NEW PRODUCTION METHOD OF AMMONIUM METATUNGSTATE—DONNAN DIALYSIS METHOD
ZhouKanggen1 ChenXiaowen2

Department of Metallurgical Science and Engineering, Central South University of Technology, Changhsha 410083, China;
2.Changsha Research Institute of Environmental Science, Changhsha 410083, China

Abstract:A newmethod for production of ammonium metatungstate (AMT) directly from ammonium tungstate solution—Donnan dialysis method is advanced. Laboratory experiments are conducted by a Donnan dialysis cell with the membrane area of 140 mm ×200 mm. The result shows that the transformation rate of AMT reaches 370 g-WO3/(m2·h), the recovery ratio of AMTby the Donnan dialysis method is nearly 100%, and the loss of tungsten is less than 0.2%. It has been proved that the Donnan dialysis method is effective for production of AMT.

 

Key words: membrane separation; Donnan dialysis; tungsten; ammonium metatungstate

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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