METHOD OF TREATING ZINC SELENIDE WASTES Russian patent published in 2009 - IPC C01B19/00 C01G9/00

Abstract RU 2376242 C1

FIELD: chemistry.

SUBSTANCE: method of treating zinc selenide wastes involves oxidation of zinc selenide at atmospheric pressure in an ammonium peroxodisulphate solution with concentration ranging from 35 to 37% at temperature ranging from 70 to 90°C. Further, the obtained black selenium is purified using a sulphite-cyclic method.

EFFECT: invention enables use of zinc selenide without wastes and simplifies treatment of zinc selenide wastes, formed when preparing materials in semiconductor engineering.

4 ex

Similar patents RU2376242C1

Title	Year	Author	Number
METHOD OF PROCESSING OF COPPER-ELECTROLYTE SLUDGE FLOATATION CONCENTRATE	2013	Chumarev Vladimir Mikhajlovich Upolovnikova Alena Gennad'Evna Udoeva Ljudmila Jur'Evna Selivanov Evgenij Nikolaevich Mastjugin Sergej Arkad'Evich	RU2541231C1
METHOD FOR PROCESSING CONCENTRATE CONTAINING SELENIUM AND PRECIOUS METALS	2021	Zherebtsova Olga Vladimirovna Pavlova Elena Igorevna Koritskaia Natalia Georgievna Iliashevich Viktor Dmitrievich	RU2763717C1
METHOD FOR PRODUCTION OF SELENIUM DIOXIDE OF HIGH PURITY	2004	Devjatykh Grigorij Grigor'Evich Mazavin Sergej Mikhajlovich Tikhonova Elena Leonidovna Karaksina Ehlla Vladimirovna Gavrishchuk Evgenij Mikhajlovich	RU2270166C1
PROCESSING METHOD OF COPPER ANODE SLIME	2013	Ashikhin Viktor Vladimirovich Lobanov Vladimir Gennad'Evich Mastjugin Sergej Arkad'Evich Volkova Natal'Ja Aleksandrovna Korolev Aleksej Anatol'Evich Voinkov Roman Sergeevich Khafizov Azat Tagirovich Makovskaja Ol'Ga Jur'Evna	RU2550064C2
METHOD FOR CONTROLLING COMPOUNDS AND CONDITIONS IN WET FLUE GAS DESULPHURISATION (WFGD) UNIT	2013	Devalt Richard F. Vilyams Paul Dzh. Ulbricht Sendi Braun Shennon R.	RU2655998C2
ANTIOXIDANT AGENT OF NANOSTRUCTURED SELENIUM WITH HEPATOPROTECTIVE EFFECT AND METHODS FOR PRODUCING AND USING IT	2013	Karpova Ekaterina Aleksandrovna Sukhov Boris Gennad'Evich Kolesnikova Ljubov' Il'Inichna Vlasov Boris Jakovlevich Il'Ina Ol'Ga Petrovna Artem'Ev Aleksandr Viktorovich Lesnichnaja Marina Vladimirovna Pogodaeva Natal'Ja Nikolaevna Sajvanova Svetlana Alekseevna Kuznetsov Sergej Viktorovich Trofimov Boris Aleksandrovich	RU2557992C1
METHOD FOR PRECIPITATION OF ELEMENTAL SELENIUM FROM SE (VI)	2004	Grejver Tat'Jana Naumovna Shneerson Jakov Mikhajlovich Lastochkina Marina Andreevna Glazunova Galina Vladimirovna Ter-Oganesjants Aleksandr Karlovich Anisimova Nina Nikolaevna	RU2275327C1
METHOD OF DESTRUCTING ANION OF 1-HYDROXYETHANE-1,1-DIPHOSPHORIC ACID IN PRODUCTION WASTES	2011	Afonin Evgenij Gennadievich	RU2500629C2
METHOD FOR OBTAINING METALLIC SILVER FROM ARGENTUM CHALCOGENIDE	2011	Gromov Oleg Grigor'Evich Lokshin Ehfroim Pinkhusovich Savel'Ev Jurij Alekseevich Mastjugin Sergej Arkad'Evich Kalinnikov Vladimir Trofimovich	RU2458159C1
METHOD OF TREATMENT OF COPPER ELECTROLYSIS SLIME FLOATATION CONCENTRATE CONTAINING PRECIOUS METALS	2011	Mel'Nikov Jurij Tikhonovich Losev Vladimir Nikolaevich Krinitsyn Dmitrij Olegovich	RU2451760C1

RU 2 376 242 C1

Authors

Lisichkin Isak Nokhinovich

Ivanenko Ljudmila Vladimirovna

Dates

2009-12-20—Published

2008-09-18—Filed