The Method for Sodium Tungstate

Technology brief description:

By supplying an oxidant constituted by sodium nitrate or sodium nitrite, the tungsten-containing material and oxidizing agent contact with each other in oxygen-containing atmosphere , so as to generate reaction product continuously and prepare sodium tungstate; Also can use this method to collect tungsten and prepare sodium tungstate.

The invention also provides: a method of preparing an aqueous solution of sodium tungstate, adding reducing agent into a solution which contains the above reaction product and subsequently it is dissolved in the water then collect he tungsten.

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