Raw coal produced in coal mines without washing and processing is also called raw coal. Including natural coke and inferior coal, excluding low calorific value coal. According to its carbonization degree, it can be divided into peat, lignite, bituminous coal and anthracite. Raw coal is mainly used for power generation, and part of it is used as industrial raw materials and civil raw materials.
Raw coal is screened, and lumps of different sizes are lump coal.
Blended coal is a mixture of several coals with different properties in a certain proportion. (For example, mixing coals with different calorific values in a certain proportion will produce raw coal with different calorific values and different uses)