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.
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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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Gallium recovery processes
Recycling gallium from GaAs scraps
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