METHOD FOR PREPARING LEAD TUNGSTATE PbWO4

FIELD: inorganic chemistry, chemical technology. SUBSTANCE: invention relates to the field of synthesis of high-purity substances, in part, lead tungstate used as scintillating agents for highly precision electromagnetic calorimetry of high energy particles. Solutions of sodium tungstate and lead ni...

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Bibliographic Details
Main Authors KUZ'MIN A.P, GROMOV O.G, LOKSHIN EH.P, KUNSHINA G.B
Format Patent
LanguageEnglish
Russian
Published 20.06.2003
Edition7
Subjects
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
INORGANIC CHEMISTRY
METALLURGY
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Summary:FIELD: inorganic chemistry, chemical technology. SUBSTANCE: invention relates to the field of synthesis of high-purity substances, in part, lead tungstate used as scintillating agents for highly precision electromagnetic calorimetry of high energy particles. Solutions of sodium tungstate and lead nitrate or acetate are fed simultaneously with equal volume rate as jets freely flowing out from diametrically arranged separating funnels. Solutions comprise equivalent amounts of parent substances and they are fed to additional liquid phase with neutral pH value. Distilled water or mother liquor obtained after separation and washing out lead tungstate precipitate. Precipitate is washed out with distilled water up to complete absence of ions NO-3 or C2H3O-2 in washing water. Method provides preparing monophase lead tungstate in crystalline form exhibiting good ability for filtration. EFFECT: improved preparing method. 5 cl, 1 dwg
Bibliography:Application Number: RU20010128481