| abstract |
PCT No. PCT/BE90/00016 Sec. 371 Date Sep. 25, 1991 Sec. 102(e) Date Sep. 25, 1991 PCT Filed Apr. 11, 1990 PCT Pub. No. WO90/13677 PCT Pub. Date Nov. 15, 1990.A germanium bearing sulphate solution containing indium and/or gallium is brought at pH 1-2.5 into contact with an organic phase, containing a substituted 8-hydroxyquinoline and an acid organophosphorus compound. So, in addition to germanium, indium and gallium are also extracted from the sulphate solution. |