The uses of coal are very diverse, and the main uses include the following:
Energy: Coal is one of the most important energy sources in the world and is widely used for power generation, heating, and industrial production. The combustion of coal releases thermal energy, which can be used in the steam power systems of power plants. At the same time, coal is also one of the important fuels for home heating.
Steel production: Coal can be used as a reducing agent at high temperatures in the iron smelting process, converting iron ore into iron and steel. Coke in coal is a key raw material in the metallurgical industry, providing fuel and reducing agent for blast furnace ironmaking.
Chemical Industry: Coal is an important raw material in the chemical industry. Through gasification technology, coal can be converted into synthesis gas, synthetic oil, and synthetic chemicals such as methanol, ammonia, and synthetic fibers. These products have wide applications in the plastics, fertilizer, textile, and pharmaceutical industries.
Basic chemical raw materials: Coal tar, coal tar oil, and coal tar gas in coal are important raw materials for producing chemical products. They can be used to produce chemical products such as dyes, paints, rubber, plastics, and asphalt.
Coal chemical industry: Through the processing and conversion of coal, coal-derived products such as coal oil, coal tar, coal gas, and coke oven gas can be obtained These products can be used as fuel, chemical raw materials, and energy sources.
Chemical fertilizer production: The coke in coal can be used to produce ammonia through the ammonia process, which can then be used to manufacture fertilizer products such as urea. Coal can also be used to produce synthesis gas through coal gasification technology, which can be used to synthesize fertilizers.
Coal for steam locomotives: Coal used for steam locomotives accounts for about 2% of the total coal used for power generation. The average coal consumption rate for steam locomotive boilers is about 100 kg/(ton-km).
Coal for construction materials: Coal used in construction materials accounts for more than 10% of the total coal used for power generation, with the largest amount being used in cement production, followed by glass, bricks, and tiles.