The essential difference between coal and coke is that they are formed in different ways:

1. Coal is a solid combustible mineral gradually formed by ancient plants buried underground through complex biochemical and physicochemical changes. Coal is a kind of solid combustible organic rock, which is mainly transformed from plant remains by biochemical, burial and geological processes.

2. Coke is made by heating bituminous coal to 950- 1050℃ and then drying, pyrolysis, melting, bonding, curing and shrinking. This process is called high temperature coking (high temperature dry distillation).

3. Coke obtained by high-temperature coking is used for smelting, casting and gasification in blast furnace. The recovered and purified coke oven gas produced in coking process is not only a high calorific value fuel, but also an important raw material for organic synthesis industry.

Extended data:

Distribution of coal in China:

China, with its vast territory and rich products, is an important material foundation for the Chinese nation to thrive, develop and grow, and stand among the nations of the world. Among the discovered 142 minerals, coal occupies a particularly important position, with abundant resources and wide distribution. The coalfield covers an area of about 550,000 square kilometers, ranking among the top coal-producing countries in the world.

The coal-accumulating period and coal-bearing strata in China are distributed in six coal-accumulating areas in North China, South China, Northwest China, Southwest China (Yunnan, Tibet), Northeast China and Taiwan Province Province.

In the Strategic Action Plan for Energy Development (20 14-2020) released on 20/4, the State Council decided to focus on the construction of northern Shaanxi, Jinzhong, Jindong, northern Shaanxi, Huanglong, Ningdong, Luxi, Huaibei, Yunnan-Guizhou, Jizhong, Henan, eastern Inner Mongolia and Xinjiang. The data shows that the output of 14 large coal base in 20 13 is 3.36 billion tons, accounting for 9 1% of the national total output.

References:

Baidu encyclopedia-coal

References:

Baidu encyclopedia-cola