METHOD OF TELLURIUM PURIFICATION FROM IMPURITIES

FIELD: inorganic chemistry, metals. SUBSTANCE: technical tellurium is dissolved in hydrogen peroxide following by boiling of prepared acid at tellurium addition and isolation of purified tellurium by electrolysis. Solution purified by ionic exchange is crystallized before electrolysis, and mother li...

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Bibliographische Detailangaben
Hauptverfasser:	GERASIMOVA T.A, NIKOLAEVA G.V, ARTEM'EVA N.P, GERASIMOV V.S
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS FERROUS OR NON-FERROUS ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	FIELD: inorganic chemistry, metals. SUBSTANCE: technical tellurium is dissolved in hydrogen peroxide following by boiling of prepared acid at tellurium addition and isolation of purified tellurium by electrolysis. Solution purified by ionic exchange is crystallized before electrolysis, and mother liquor is recovered at dissolving stage. Mother liquor formed by electrolysis is recovered at the stage of potassium tellurate preparing up to the content of potassium tellurate in solution 50-60 g/l. EFFECT: improved method of tellurium purification. 2 dwg Использование: очистка теллура от примесей. Сущность: растворяют технический теллур в перекиси водорода, проводят кипячение полученной кислоты при добавлении теллура и последующее выделение очищенного теллура электролизом раствора теллурата калия, причем очищенный ионным обменом раствор перед электролизом кристаллизуют с возвратом маточника на стадию растворения, а образовавшийся при электролизе маточник возвращают на стадию приготовления раствора теллурата калия до содержания в растворе теллурата калия 50-60 г/л. 2 ил.