FIELD: metallurgy, possibly processes for making metallurgical semicoke.
SUBSTANCE: method comprises steps of heat treatment of coal layer in vertical shaft type apparatus while igniting at side opposite to that of air supply; using as raw material coal fractions 20 - 70 mm; supplying air through coal layer at specific flow rate 70 - 99.5 m3/m 2h depending upon coal kind.
EFFECT: possibility for obtaining solid product of higher strength, with lowered ash content and larger mean size of lumps at increased yield.
1 cl, 3 ex, 1 tbl
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|---|---|---|---|
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|
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| COAL PROCESSING METHOD | 2018 |
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RU2722557C2 |
