METHOD FOR PRECIPITATION OF ELEMENTAL SELENIUM FROM SE (VI)

FIELD: chemical technology of rare elements. ^ SUBSTANCE: method involves addition of metallic iron in sulfate solution in the presence of titanium (III) salts and the concentration of titanium in solution is maintained as 0.5-2 g/dm3 at pH > 0.7 and the process temperature 80°C, not above. In pa...

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Hauptverfasser:	GLAZUNOVA GALINA VLADIMIROVNA, TER-OGANESJANTS ALEKSANDR KARLOVICH, GREJVER TAT'JANA NAUMOVNA, ANISIMOVA NINA NIKOLAEVNA, LASTOCHKINA MARINA ANDREEVNA, SHNEERSON JAKOV MIKHAJLOVICH
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	CHEMISTRY COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS
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creator	GLAZUNOVA GALINA VLADIMIROVNA TER-OGANESJANTS ALEKSANDR KARLOVICH GREJVER TAT'JANA NAUMOVNA ANISIMOVA NINA NIKOLAEVNA LASTOCHKINA MARINA ANDREEVNA SHNEERSON JAKOV MIKHAJLOVICH
description	FIELD: chemical technology of rare elements. ^ SUBSTANCE: method involves addition of metallic iron in sulfate solution in the presence of titanium (III) salts and the concentration of titanium in solution is maintained as 0.5-2 g/dm3 at pH > 0.7 and the process temperature 80°C, not above. In particular case, pH value of solution is maintained in the range 1.0-1.7 and the process temperature is 60-70°C. Method provides effective precipitation of selenium in its elemental form from weakly acid solutions with the high content of selenium. Invention can be used for extraction of selenium from sulfate solutions containing selenium in its hexavalent state. ^ EFFECT: improved method for selenium precipitation. ^ 3 cl, 3 dwg, 9 ex
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In particular case, pH value of solution is maintained in the range 1.0-1.7 and the process temperature is 60-70°C. Method provides effective precipitation of selenium in its elemental form from weakly acid solutions with the high content of selenium. 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In particular case, pH value of solution is maintained in the range 1.0-1.7 and the process temperature is 60-70°C. Method provides effective precipitation of selenium in its elemental form from weakly acid solutions with the high content of selenium. Invention can be used for extraction of selenium from sulfate solutions containing selenium in its hexavalent state. ^ EFFECT: improved method for selenium precipitation. ^ 3 cl, 3 dwg, 9 ex</abstract><oa>free_for_read</oa></addata></record>
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subjects	CHEMISTRY COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS
title	METHOD FOR PRECIPITATION OF ELEMENTAL SELENIUM FROM SE (VI)
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