What are caking coals?

Coal that softens and agglomerates on heating and after volatile matter has been driven off at high temperatures; produces a hard gray cellular mass of coke. All caking coals are not good coking coals.

What is a non coking coal?

A non-coking coal is that coal which when heated in the absence of air leaves a coherent residue. This residue does not possess the physical and chemical properties of the coke and is not suitable for the manufacture of coke.

What is the difference between coke and coking coal?

Coking coal, also known as metallurgical coal, is used to create coke, one of the key irreplaceable inputs for the production of steel. There are many varieties of coal in the world, ranging from brown coal or lignite to anthracite. Coke is produced by heating coking coals in a coke oven in a reducing atmosphere.

What is caking and non-caking coal?

Caking coal is a type of coal which when heated in anaerobic conditions leaves a solid residue whereas non-caking coal when heated in similar conditions leaves a powdery residue. Peat coal is the first stage of transformation and that is why it contains more impurities and less amount of carbon.

Which types of coals are non-caking in nature?

Explanation: All coking coals are caking but not all caking coals are coking. Only that coal which has a tendency to soften, swell and stick together during strong heating in absence of air can be coked.

What type of coal is coking coal?

Metallurgical coal
Metallurgical coal, also known as coking coal, is used to produce coke, the primary source of carbon used in steelmaking. Metallurgical coal differs from thermal coal, which is used for energy and heating, by its carbon content and its coking ability.

What is coking grade coal?

Metallurgical coal or coking coal is a grade of coal that can be used to produce good-quality coke. Coke is an essential fuel and reactant in the blast furnace process for primary steelmaking. The demand for metallurgical coal is highly coupled to the demand for steel.