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Article | REF: M2369 V1

Gallium metallurgy

Authors: Pierre BLAZY, El-Aïd JDID

Publication date: March 10, 2011

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7. Gallium recovery processes

  • By far the most abundant source of gallium is bauxite, whose Bayer process liquors have gallium concentrations that can sometimes exceed 200 mg/L.

  • The second source is electrolytic zinc residues.

  • The third source is fly ash produced by coal combustion.

    In all three cases, treatment is essentially hydrometallurgical.

7.1 Gallium recovery as a by-product of alumina production

The most industrially important gallium production processes involve recovering it from Bayer liquors. During the precipitation of aluminum trihydrate (

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