METHOD OF RECOVERING GALLIUM FROM ALKALI SOLUTIONS

• Main Authors: BUKIN V.I, SITDIKOVA JU.S, REZNIK A.M, GULJAEVA N.A, MOISEEV V.V, KHATIN G.D
• Format: Patent
• Language: English; Russian
• Published: 20.11.2004
• Edition: 7
• Subjects: 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

FIELD: rare metal technology. ^ SUBSTANCE: invention relates to hydrometallurgy of rare elements, in particular gallium, and can be used for recovering gallium from alumina production solutions. Recovery comprises extraction of gallium from alkali solutions with N-(2-hydroxy-5-nonylbenzyl)-beta,beta-dihydroxyethylamine solution in n-octanol followed by separation of gallium and aluminum in the re-extraction stage using various-concentration (2 to 3 M) HCl solutions. Degree of gallium recovery achieves ~94-99% at NaOH concentration 0.5 to 5 M from individual solutions and 58% from solutions containing 0.3 g/L Ga, ~30 g/L Al, and 3.9 M NaOH. ^ EFFECT: increased gallium extraction velocity and yield. ^ 4 tbl, 6 ex