Other

Igor Vladimirovich Prokopov

Ellin Petrovich Bochkarev

Arkady A Belsky

Nikolai A Novikov

Alexandr V Eljutin

Askar M Kunaev

Nina Andreevna Ljubimova

Nadezhda Semenovna Gorbacheva

Vladimir N Abrjutin

Viktor Dmitrievich Ponomarev, Deceased

Boris Alexeevich Smirnov

Galina Artemievna Ivanova

Nail Z Nasyrov

Salavat Ishanovich Turakbaev

Elizaveta Ivanovna Ponomareva

Edige R Khairulin

Ljubov I Konstantinova

Elena Leonidovna Shalavina

Svetlana M Baryshnikova

Tatyana Dmitrievna Ostapenko

Mikhail S Zvyagin

Turar Baltabaevich Tursunbaev

Viktor Nikolaevich Vasiliev

Gennady Alexeevich Romanov

Arkady Ivanovich Zazubin

Boris Stepanovich Povazhny

Evgeny Nikolaevich Bespalov

According to the invention a process is proposed for purifying low-melting metals from impurities, residing in that a melt of a low-melting metal is treated with an aqueous solution of an inorganic acid or an alkali in the presence of organic compounds with ionogenic groupings. The proposed invention enhances the purity degree of the low-melting metal being purified and at the same time reduces the losses thereof.

Process for purifying low-melting metals from impurities

A process for the extraction of gallium from sodium aluminate liquors comprises extracting gallium from aluminate liquors by cementation with the aid of a liquid gallium-aluminum alloy. Aluminate liquors produced in the Bayer process, prior to cementation, are freed from various impurities. To this end, the recycle aluminate liquor is cooled to a temperature at which soda crystallizes and vanadium is retained in the liquor, whereupon the crystallized precipitate is separated, while the residual liquor is mixed with the mother aluminate liquor in the ratio of 0.1-1 to 1-0.1. The resultant liquor is cooled down to ambient temperature, and the vanadium precipitate is separated. The process is a major step towards a simpler technique of gallium extraction from aluminate liquors both high and low in gallium. Also, the process permits extracting, directly from aluminate liquors, gallium in a higher degree of purity than can be obtained in the prior art. Furthermore, the process enables valuable vanadium compounds to be recovered from liquors alongside gallium.

Process for extraction of gallium from sodium aluminate liquors

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Igor Vladimirovich Prokopov