The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 23, 1979
Filed:
Dec. 19, 1977
Khoren A Badaliants, Pikalevo Leningradskoi oblasti, SU;
Arkady A Belsky, Moscow, SU;
Leonid M Butorin, Leningrad, SU;
Anna E Danilina, Moscow, SU;
Alexandr V Eljutin, Moscow, SU;
Isaak A Zatulovsky, Pikalevo Leningradskoi oblasti, SU;
Arkady I Zazubin, Alma-Ata, SU;
Raisa V Ivanova, Moscow, SU;
Evgeny A Isakov, Pikalevo Leningradskoi oblasti, SU;
Ivan M Kostin, Pikalevo Leningradskoi oblasti, SU;
Askar M Kunaev, Alma-Ata, SU;
Teodor G Milberger, Pikalevo Leningradskoi oblasti, SU;
Petr F Minin, Pikalevo Leningradskoi oblasti, SU;
Nikolai A Novikov, Moscow, SU;
Tatyana D Ostapenko, Alma-Ata, SU;
Alexandr V Peredereev, Moscow, SU;
Garegin A Peikarov, Pikalevo Leningradskoi oblasti, SU;
Gennady A Romanov, Alma-Ata, SU;
Anatolia T Simanova, Pikalevo Leningradskoi oblasti, SU;
Natalya V Tishevetskaya, Alma-Ata, SU;
Georgy P Tkachenko, Moscow, SU;
Elena L Shalavina, Alma-Ata, SU;
Leonid I Finkelshtein, Achinsk Krasnoyarskogo kraya, SU;
Nikolai S Shmorgunenko, Leningrad, SU;
Other;
Abstract
A process for recovering gallium from alkali aluminate solutions which consists in that the starting alkali aluminate solution is neutralized to a concentration of the caustic alkali of from 0.1 to 10 g/l, whereafter the neutralized liquor is evaporated to a concentration of the caustic alkali therein of from 30 to 150 g/l. Then the evaporated solution is corrected to obtain the ratio between the alkali metal oxide and alumina of above 2.0. The corrected solution is treated with a liquid alloy of gallium containing an element possessing an oxidizing potential exceeding that of gallium to give a concentrate containing more than 90% of gallium by mass, wherafter gallium of a higher purity grade is recovered from the resulting concentrate by the electrochemical method. The process according to the present invention makes it possible to recover gallium from alkali solutions resulting from the treatment of nephelines with the production of a 90% gallium concentrate, wherefrom gallium of an increased purity is obtained at relatively low cost. Processing of the concentrate with the production of gallium is simple, it is not encountered with any additional expenses and requires no additional equipment. Another advantage of the process resides in a more comprehensive utilization of low-grade aluminum-containing ores.