As its name suggests, coal comes from mines
Used mainly as fossil fuel due to its high calorific value in industrial boilers and for obtaining electricity in thermoelectric power stations. The main coals include anthracite, forge coal, lignite and peat, sorted from the highest to lowest quality. It is not considered biomass because it is highly polluting and, although its use has become less extensive due to the increase in oil and biomass by-products, it continues to be used in industry.
There is hard coal (anthracite and forge coal) and soft coal (lignite and peat).
Used mainly as fossil fuel due to its high calorific value in industrial boilers and for obtaining electricity in thermoelectric power stations.
This is a very special coal which comes from that fuel (coke) and that is why it is produced in the distillery.
Unlike charcoal, it resists higher temperatures and is essential in the iron and steel industry. It can be found in different grain sizes such as foundry coke, blast furnace coke and technological coke, is widely used for heating homes and farms because its combustion does not produce smoke and is less polluting. It is considered the last yield from oil. This fuel or residue has 90%-95% of carbon content. Nitrogen, oxygen, Sulphur and hydrogen are present in smaller quantities.
It is porous and its color is black to metallic grey. Coke is used in large amounts by blast furnaces to produce iron by taking advantage of the following chemical reactions.