FIELD: metallurgy.
SUBSTANCE: method for producing germanium concentrate from carbon-containing raw materials, which is used as germanium-containing coal or lignite. Germanium concentrate is obtained from lignite by its heat treatment, which is carried out in a fluidized bed with an air excess coefficient α=0.5-0.6 at an air consumption of 3.5-3.8 nm3/kg with simultaneous supply of the main and additional air blast in a ratio of 2:1.
EFFECT: increased extraction of germanium from carbonaceous raw materials.
1 cl, 2 tbl
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