Coking coal is mainly used in blast furnace ironmaking and smelting of nonferrous metals such as copper, lead, zinc, titanium, antimony and mercury, and plays the role of reducing agent, heating agent and material column skeleton.

Power coal is used as power raw materials for power generation, locomotive propulsion and boiler combustion.

2. Different characteristics

Coking coal has strong cohesiveness, high smelting strength, large particle size, high strength and few cracks.

The requirements of thermal coal for calorific value, volatile matter and ash content are not as high as those of chemical coal (such as coking coal for steelmaking). But considering the economic benefits of electric power technology, thermal coal should also have certain quality requirements.

Coal classification

According to the China coal classification scheme recommended by the State Science and Technology Commission, China coal can be divided into ten categories. Generally, lean coal, coking coal, fat coal, gas coal, weakly bonded, unbonded and long-flame coal are collectively referred to as bituminous coal; Lean coal is called semi-anthracite coal; More than 40% of the volatile matter is called lignite.

Anthracite can be used to make gas or directly as fuel, while bituminous coal can be used in coking, coal blending, power boiler and gasification industry. Lignite is generally used in gasification, liquefaction industry, power boilers and so on.