develop

What is thermal coal?

Broadly speaking, all coal used for power generation, locomotive propulsion, boiler combustion and other purposes. It belongs to power coal, referred to as power coal for short. Power coal mainly includes lignite, long-flame coal, unbonded coal, lean coal, gas coal and a small amount of anthracite. As far as commercial coal is concerned, it mainly includes: cleaned coal, washed coal, pulverized coal, pulverized coal and so on.

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).

From the category, power coal mainly includes lignite, long flame coal, unbonded coal and lean coal; Gas coal and a small amount of anthracite. As far as commercial coal is concerned, there are mainly washed blended coal, washed coal, pulverized coal and pulverized coal. Inferior coal mainly refers to high ash content (above 40%) and low calorific value (less than 15), which is unfavorable for boiler operation. 73 mj/kg) bituminous coal, low volatile anthracite (less than 10%), low moisture and high calorific value lignite, and high sulfur coal (more than 2%).