The main application value of coal and its impact on China's economy and the world
China is a major producer of coke, but also a major exporter of coke in the world. In 2003, global coke production was 3.9 tons, China's coke production reached 1.78 tons, accounting for about 46% of global output. In terms of exports, in 2003 China's exports of coking coal 14 million 750 thousand tons, of which exports to the EU of 4 million 580 thousand tons, accounting for about 1/3. In 2004, China exported 14 million 720 thousand tons of coke, which is equivalent to about 56% of the global coke trade. 2008 China's total coke production of about 327 million tons, from January 2009 to September coke production of 252 million 768 thousand and 700 tons.
coking coalAlthough our country is rich in coal resources, coking coal resources are relatively small, coking coal reserves account for only 27.65% of China's total coal reserves. Coking coal includes coal (13.75%), (3.53%) coal, coking coal, lean coal (5.81%) (4.01%), the other is divided into grades of coal (0.55%); non coking coal includes anthracite (10.93%), coal (5.55%), alkaline coal (1.74%) do not pay, coal (13.8%), coal (12.52%), brown (12.76%), natural coke (0.19%), not the grades of coal (13.80%) and grade of coal is not clear (1.06%). Coking coal is the main purpose of coke, coke from the coking coal or mixed coal smelting from high temperature, generally about 1.3 tons of coking coal to refine a ton of coke. Coke is mainly used for steelmaking, is the main raw material for the production of iron and steel and other industries, has been hailed as the basic food industry".
The use of coal is very extensive, according to the purpose of its use for two main purposes: (1) power coal, (2) coking coal.The main use of power coal in china:Steam coal1) coal for power generation: more than 1/3 of coal in China is used to generate electricity, and the average power consumption is 370g/ (kW / h). The power plant uses the calorific value of coal to convert heat energy into electrical energy. 2) steam locomotive coal: accounts for about 2% of the power coal, the average coal consumption of the boiler is 100kg/ (10000 tons / km). 3) coal for building materials: accounts for more than 10% of the power coal, with the largest amount of cement, followed by glass, brick, tile, etc.. 4 general industrial boiler coal: in addition to the thermal power plant and large heating boiler, the general enterprise and the heating of the industrial boiler model, large quantity and scattered, coal accounts for about 30% of the coal. 5) living with coal: the number of living coal is also large, accounting for about 20% of fuel coal. 6 metallurgical power coal: Metallurgical power coal is mainly used for sintering and blast furnace coal injection, the amount of less than 1% of the coal used for power.
