FIELD: chemistry.
SUBSTANCE: firstly ashless coal is oxidized, for example, with air, at a temperature of 150°C to a temperature not exceeding the ignition temperature of ash-free coal. The oxygen content of the oxidized ash is increased from 2.0 to 10.0%. Oxidized ash is mixed with unoxidized ash-free coal in a ratio of 60-95 parts by weight of oxidized ash-free coal per 100 parts by weight of the mixture. The resulting mixture is formed and carbonized.
EFFECT: carbon material has a high purity and density, is not deformed and does not contain cracks.
4 cl, 2 dwg, 1 tbl
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