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Value of coal: Coal is one of the most important energy in the world. Ever since 1880s, coal has been used for generation of electricity. Till now, most of the electricity plants are still based on coal as fuel. Meanwhile, for the quick development of cities, there is a large consumption of steel and cement. Here coal is a fuel for both extraction of iron from iron ores in steel industry and for cement production.
Coal mining: coal mining is to extract coal from underground or from a mine. There are several methods of mining. Based on the different depths of coal reservation, there are surface mining and underground mining. Both the surface mining and underground mining need a washing for the extracted coals to reach some certain characters. Where the washing is done is called coal preparation plant.
During the mass usage of coal, lots of problems occurred such as environment pollution, global warming and dirty air. A good and efficient coal preparation and tailing of coal mines could help to reduce such problems.
Vibrating screens in coal preparation: In a coal preparation plant, there are several different kind of processing machines, including crusher, cyclones, magnetic separator and several sets of vibrating screens. In a coal preparation plant, vibrating screens always serve for the wet separation during the coal beneficiation and classification, like the sizing vibrating screens, dewatering and rinsing. For those purposes, all GN vibrating screen types could be involved, from the high frequency vibrating screens to the stack vibrating screens, and also the middle sized and large sized of vibrating screens. GN has a professional engineer team who can help with choosing the most suitable vibrating screen type and model.
Besides the roles GN vibrating screens play in coal preparation, the same or similar GN vibrating screens and GN decanter centrifuges are widely used in coal mine tailing projects, too. Tailing helps to minimize the impact on environment, meanwhile, maximize the coal mines' output.