PRODUCTION OF AMMONIUM VANADATE

of low alkali content is prepd. by precipitating solns. of sodium vanadate and sulphate with ammonium sulphate at pH 7.5 to 9 and at 25-35 degrees C, pref. with vigorous stirring. Higher purity of prod. reduces losses in aluminothermic redn. of V2O5 to vanadium, caused by Na2O, which consumes more A...

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Hauptverfasser:	HUBERT BINGS, ROLANDE THOME
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F INORGANIC CHEMISTRY METALLURGY
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creator	HUBERT BINGS ROLANDE THOME
description	of low alkali content is prepd. by precipitating solns. of sodium vanadate and sulphate with ammonium sulphate at pH 7.5 to 9 and at 25-35 degrees C, pref. with vigorous stirring. Higher purity of prod. reduces losses in aluminothermic redn. of V2O5 to vanadium, caused by Na2O, which consumes more Al and is reduced to sodium, which causes the dust produced in the process to contain appreciable amts. of vanadium. Yield in the pptn. is raised from 83% to 97%.
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title	PRODUCTION OF AMMONIUM VANADATE
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