A NEW PRODUCTION METHOD OF AMMONIUM METATUNGSTATE—DONNAN DIALYSIS METHOD
来源期刊：中南大学学报(英文版)1999年第2期
论文作者：Zhou Kanggen Chen Xiaowen
文章页码：78 - 81
Key words：membrane separation; Donnan dialysis; tungsten; ammonium metatungstate
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 AMT by 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.
