Coal
Coal is made up of several basic elements: carbon, hydrogen, oxygen, nitrogen, phosphorus and sulphur. It is a sedimentary rock of plant origin, formed mainly in the Carboniferous from plant remains that became carbonised under anaerobic conditions. With the degree of coalification of the fuels, which depends on the percentage of pure carbon, it can be divided into several types: peat (approx. 39% C), lignite (approx. 46% C), flint coal (approx. 55% C), gas coal (approx. 54% C), ortho-coking coal (approx. 59% C), semi-coking coal (approx. 60% C), anthracite (69% C).
Hard coal is one of the leading fossil fuels today. Its quality depends on many parameters, including its calorific value, ash content and sulphur content. The coal we import is sourced from trusted mines that ensure the consistency of the required parameters (including high calorific value, low ash and sulphur content), making it less harmful to the environment and safe for furnaces.
