Purification of APT

Directed to a process for producing a tungsten product of enhanced purity from ammonium paratungstate (APT) with a minimum number of processing steps which comprises mixing the APT with an ammonium solution, autoclaving the mixture at a temperature above the boiling point thereof to dissolve the APT...

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Bibliographic Details
Main Authors KEARNS; TOM C, BECKSTEAD; LEO W, CHOU; EDDIE C
Format Patent
LanguageEnglish
Published 16.10.1990
Subjects
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
INORGANIC CHEMISTRY
METALLURGY
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Summary:Directed to a process for producing a tungsten product of enhanced purity from ammonium paratungstate (APT) with a minimum number of processing steps which comprises mixing the APT with an ammonium solution, autoclaving the mixture at a temperature above the boiling point thereof to dissolve the APT and recrystallizing APT from the solution to yield an APT product of enhanced marketability.
Bibliography:Application Number: US19890412062