Method for producing ammonium paratungstate from tungsten-containing wastes

The invention relates to the technical field of ammonium paratungstate production. The invention relates to a method for producing ammonium paratungstate from tungsten-containing wastes. The method comprises the following steps: calcining the tungsten-containing waste and sodium carbonate in a calci...

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Bibliographic Details
Main Author WU YIDE
Format Patent
LanguageChinese
English
Published 20.11.2020
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Summary:The invention relates to the technical field of ammonium paratungstate production. The invention relates to a method for producing ammonium paratungstate from tungsten-containing wastes. The method comprises the following steps: calcining the tungsten-containing waste and sodium carbonate in a calcining furnace, discharging after caking, then grinding and crushing the calcined waste, then, puttingthe crushed powder into a stirring barrel to be stirred, boiling and filtering the stirred solution, filtering the solution after standing by a filter to remove impurities, carrying out evaporative crystallization on the solution subjected to impurity removal by utilizing an evaporative crystallization reaction kettle, then carrying out solid-liquid separation by utilizing a separator, taking outan ammonium paratungstate crystal, and finally, storing the dried ammonium paratungstate in batches. According to the method for producing the ammonium paratungstate from the tungsten-containing waste, the tungsten-containing
Bibliography:Application Number: CN202010753591