If coal stocks fall in the short term, they may rebound in the future, so their trend has something to do with futures, but it is not the main reason for stock price changes.
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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.
The quality of coal used in thermal power plants is an important basis for boiler design and production process control. The characteristics of coal combustion include two aspects: one is the characteristics of coal quality, and the other is the characteristics of ash. The characteristics of coal refer to moisture, ash, volatile matter, fixed carbon, element content (carbon, hydrogen, oxygen, nitrogen and sulfur), calorific value, ignition temperature, grindability and particle size. These indexes are directly related to combustion, processing (such as grinding into pulverized coal), transportation and storage. Ash characteristics refer to the chemical composition, high temperature characteristics and specific resistance of coal ash. These characteristics have great influence on the cleanliness after combustion, the corrosiveness to steel and the removal of coal ash.
Types of power coal
Power coal mainly includes lignite, long-flame coal, unbonded coal, lean coal, gas coal and a small amount of anthracite (see annex for coal types). As far as commercial coal is concerned, there are mainly washed blended coal, washed coal, pulverized coal and pulverized coal.
Use of power coal
The proportion of coal in the world's primary energy consumption is 26.5%, lower than that of oil (37.3%) and higher than that of natural gas (23.9%). From a global perspective, the output of thermal coal accounts for more than 80% of the total coal output. More than 65% of the consumption structure of thermal coal in China is used for thermal power generation; Secondly, coal used for building materials accounts for about 20% of the consumption of power coal, and coal used for cement is the largest; The remaining heat consumption coal is distributed in metallurgical, chemical and civil fields.
Regional distribution of resources
Regionally, China's power coal resources are mainly concentrated in North China and Northwest China. The reserves of electric coal resources in North China account for 46.09% of the proven electric coal reserves in China, and the reserves in Northwest China are as high as 39.98%, that is, the reserves of electric coal resources in the "two northern regions" account for more than 80% of the country. However, industrialized East China only accounts for 1.77% of China's power coal resources reserves, while Northeast China and Central South China only account for 5.02% of China's power coal resources reserves.
Distribution of coal types of power coal
The coal types of power coal in China mainly include: non-caking coal, long-flame coal, lignite, anthracite, lean coal, weakly caking coal, natural coke and some unclassified coal types. Non-caking coal is the largest reserves of power coal in China, accounting for 2 1.83% of the proven reserves of power coal. Followed by long-flame coal, accounting for 20.07% of the proven reserves of thermal coal; The third is lignite, accounting for17.69% of the proven resource reserves of thermal coal; The fourth is anthracite, accounting for15.24% of the proven resource reserves of thermal coal; Weak caking coal reserves are the least, accounting for only 2. 18% of the identified resource reserves of thermal coal.