Method for Preparing Ammonium Tungstate by Treating Waste Tungsten Oxide

The invention discloses a method for preparing ammonium tungstate by treating waste tungsten oxide, which comprises the following steps of:

Adopting an ammonia water pressure cooking method to dissolve waste tungsten trioxide, blue tungsten oxide, and other tungsten oxide to prepare an ammonium tungstate solution, ammonium paratungstate, ammonium metatungstate and other ammonium tungstate.

Compared the method that caustic soda or soda ash digestion or melting-poaching is adopted to dissolve the tungsten oxide to prepare a sodium tungstate solution, and the method that a solvent extraction or ion exchange process is adopted to prepare the sodium tungstate solution in the prior art, the method has the advantages and characteristics that the procedure process can be simplified, the auxiliary raw materials can be saved, energy saving and emission reduction can be realized, the environmental pollution can be relieved, and the production cost can be reduced.


Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email:   sales@chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Tungsten News & Tungsten Prices, WML Version: http://m.chinatungsten.com

The above is reproduced from: Application Technology Network, if in doubt, please contact the content belongs website.

• < Prev
• Next >