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COKING COAL : These coals, when heated in the absence of air, form coherent beads, free from volatiles, with strong and porous mass, called coke.

• These have coking properties
• Mainly used in steel making and metallurgical industries
• Also used for hard coke manufacturing

SEMI COKING COAL : These coals, when heated in the absence of air, form coherent beads not strong enough to be directly fed into the blast furnace. Such coals are blended with coking coal in adequate proportion to make coke.

• These have comparatively less coking properties than coking coal
• Mainly used as blend-able coal in steel making, merchant coke manufacturing and other metallurgical industries

NLW COKING COAL : These coals are having inferior coking properties to the medium coking coal but produce weak coke. They are, however, useful for production of metallurgical coke in blends with matching metallurgical coals.

NON-COKING COAL : These are coals without coking properties.

• Mainly used as thermal grade coal for power generation
• Also used for cement, fertilizer, glass, ceramic, paper, chemical and brick manufacturing, and for other heating purposes

HARD COAL : Hard coke is formed from coking / semi-coking coal through the process of carbonisation.

• Mainly used in metallurgical industries
• Also used in industrial plants utilising furnaces

WASHED AND BENEFICIATED COAL : These coals have undergone the process of coal washing or coal beneficiation, resulting in value addition of coal due to reduction in ash percentage.

• Used in manufacturing of hard coke for steel making
• Beneficiated and washed non-coking coal is used mainly for power generation
• Beneficiated non-coking coal is used by cement, sponge iron and other industrial plants

MIDDLINGS : Middlings are by-products of the three stage coal washing / beneficiation process, as a fraction of feed raw coal.

• Used for power generation
• Also used by domestic fuel plants, brick manufacturing units, cement plants, industrial plants, etc.

REJECTS : Rejects are the products of coal beneficiation process after separation of cleans and / or middlings, as a fraction of feed raw coal.

• Used for Fluidized Bed Combustion (FBC) Boilers for power generation, road repairs, briquette (domestic fuel) making, land filling, etc.

CIL COKE / LTC COKE : CIL Coke / LTC Coke is a smokeless, environment friendly product of the Dankuni Coal Complex, obtained through low temperature carbonisation.

• Used in furnaces and kilns of industrial units
• Also used as domestic fuel by halwais, hotels, etc.

COAL FINES / COKE FINES : These are the screened fractions of feed raw coal and LTC coke / CIL Coke respectively, obtained from the Dankuni Coal Complex and other coke oven plants.

• Used in industrial furnaces as well as for domestic purposes

TAR / HEAVY OIL / LIGHT OIL / SOFT PITCH : These are products from Dankuni Coal Complex using low temperature carbonisation of non-coking coal in vertical retorts.

• Used in furnaces and boilers of industrial plants as well as power houses, oil, dye, pharmaceutical industries, etc.