More Information About Coal
The key drivers for the global coal industry include rising economic growth, increasing manufacturing base and increasing demand for electricity. Coal provides about 30% of global primary energy needs and generates more than 40% of the world’s electricity. About 70% of global steel production uses coal as the main source of energy. In the year 2013, estimated 7,823 million tons of coal was produced worldwide.
Through proximate and ultimate analyses of coal, accurate parameters are used to determine moisture, volatile matter, fixed carbon and ash contents, as well as other chemical elements such as oxygen, hydrogen, nitrogen and sulphur. Anthracite coal is the highest rank of coal and has a high carbon content of 65% to 82% and low volatile content of less than 12.5%. Bituminous coal has a carbon content of 40% to 60%; high volatile content of 20% to 36% ; a calorific value of 20 Mj/kg to 30 Mj/Kg and an inherent moisture content of 2,5% to 4%.