In wetlands, plants are converted into peat under the action of many bacterias, then into brown coal, and this, in turn, turns into stone coal after many years. In turn, hard coal is marked according to its property and characteristics, one of the brands, long-flame coal, is indicated by the letter "D". Grade "D" is characterized by a higher calorific value and therefore is used as a fuel.
•Electric power industry;
•Thermal power equipment of industrial enterprises;
•Department of Housing and Utilities;
•Heating systems of private houses.
Stone mineral grade "D" is considered the most suitable type of fuel that ensures the operation of furnaces and heating boilers. This is a long-flame coal, which got its name because of the formation of high flames, like firewood. It supports a long burning process and releases a large amount of heat without sintering. This type of fuel can be used in almost any system (even those not equipped with natural draft or forced air). It flares up very quickly, allows you to effectively heat private houses and medical institutions, administrative buildings