Where Is Tungsten Oxide From?
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- Category: Tungsten Information
- Published on Thursday, 05 February 2015 10:43
- Written by cq
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Tungsten oxide is obtained from the minerals scheelite, wolframite, ferberite. It is insoluble in H2O and acids, but soluble in hot alkalis.
Intermediates, such as tungsten trioxide, tungsten blue oxide, tungstic acid, and ammonium metatungstate can be derived from APT, either by partial or complete thermal decomposition or by chemical attack.
Stoichiometric compounds such as W20O58, W18O49 or WO2 are formed intermediately during the reduction process and can be isolated by interrupting the reduction process at the selected reduction state.
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