Coke is a grey, hard, and porous coal-based fuel with a high carbon content. It is made by heating coal or petroleum in the absence of air. Coke is an important industrial product, used mainly in iron ore smelting , but also as a fuel in stoves and forges .

While coal is a naturally occurring sedimentary rock, coke is produced by heating coal in the absence of air. They differ in terms of their composition, production process, energy content, and environmental impact.

2024年6月3日 · Coal and coke are materials derived from carbon-rich substances. However, they have different origins and purposes. Coal is a mixture of organic compounds, including hydrocarbons , oxygen, and nitrogen, whereas coke is mainly carbon with a small amount of ash and trace impurities.

Coke, solid residue remaining after certain types of bituminous coals are heated to a high temperature out of contact with air until substantially all of the volatile constituents have been driven off. The residue is chiefly carbon, with minor amounts of …

Metallurgical coal produces strong, low-density coke when it is heated in a low-oxygen environment. On heating, the coal softens, and volatile components evaporate and escape through pores in the mass. During coking, the material swells and increases in volume.

Coking is the process of heating coal in the absence of oxygen to a temperature above 600 °C (1,112 °F) to drive off the volatile components of the raw coal, leaving behind a hard, strong, porous material with a high carbon content called coke. Coke is predominantly carbon.

Coke production remains an important use of coal. Coke is produced by heating coal under controlled conditions in the absence of air. This drives off some of the volatile materials and concentrates the carbon content. Coke is then used as a high-carbon fuel for metal processing and other uses where an especially hot-burning flame is needed.

Difference between Coal and Coke. Coal is a fossilized material found on the earth; Coke is produced from coal through the coking process; Coke can only be used as a fuel by making it into coke and injecting it into furnaces to give heat energy; Coal can be used to produce heat energy in furnaces or to generate electricity through the burning ...

2023年1月5日 · Not surprisingly, the amount of coal mined in Kentucky to make coke has also declined. In 2014, in the United States, approximately 22,000 tons of coal was sold in the met market, which was less than three percent of the total mined coal that year (EIA, 2016 data).

2024年4月23日 · Coal is a naturally occurring fossil fuel primarily used for energy, whereas coke, a coal derivative, is primarily used as a reducing agent in iron production.