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本文介绍了一种仲钨酸铵的生产方法:将六甲撑四胺加入初次的钨酸铵溶液,用酸调整pH值到2左右,便生成一种主要含钨和六甲撑四胺的沉淀物。把这种沉淀物与母液分离后再溶解在氨水中,便得到二次的钨酸铵溶液,在90—100℃下加热此溶液,即生成基本上全是仲钨酸铵的沉淀物和基本上全是六甲撑四胺的母液,然后使仲钨酸铵沉淀与母液分离。
This article describes a production of ammonium paratungstate: hexamethylenetetramine added to the initial solution of ammonium tungstate, with acid to adjust the pH to about 2, then generate a precipitate containing mainly tungsten and hexamethylenetetramine. This precipitate is separated from the mother liquor and then dissolved in aqueous ammonia to give a secondary ammonium tungstate solution which is heated at 90-100 ° C to produce precipitates that are essentially all ammonium paratungstate and essentially all Hexamethylenetetramine mother liquor, and then ammonium paratungstate precipitation and mother liquor separation.