Hard coal is grey-black in color, but not as shiny as anthracite. It is very quick and easy to ignite. It generates a lot of heat. It is convenient to use in private housing for cookers and boilers.
Description
coloration- 4800 to 6000 kcal/kg;
fraction - 50-200 mm;
ash - from 5 to 20%;
moisture of coal from 8 to 18%;
sulfur content no higher than 0.5%
The classification is long-flame-plate-rock. The most common grade of coal used as a good, flammable fuel. It is very widely used by the population for residential heating, but also by large boiler houses for heat generation for the needs of the housing and communal services.
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