Lignite is characterized by high water content, high volatile matter, easy weathering and crushing in air and low ignition point. Lignite, also known as firewood, is a mineral coal with the lowest coalification degree on the market at present, and it is also a low-grade coal. Due to the strong chemical reaction of lignite, it is easy to be weathered and broken in the air, and it is difficult to transport and store, so it has strong market limitations.

Characteristics of lignite

The low coalification degree of lignite leads to a large amount of black ash floating during combustion. Burning lignite in large quantities without coal washing and refining is easy to cause serious air pollution.

The ignition point of lignite is not high, about 270? About, in dry and hot places, storage for about two months may easily lead to spontaneous combustion. In order to prevent too much loss, lignite is generally not more than two meters high when stacked.