Coal gangue also can be used to produce low calorific value gas, make ceramics, make soil amendments, or be used for paving, underground filling, ground filling. Grass can also be planted and afforested on the spontaneous combustion waste hill to beautify the environment.
After be grind into coal gangue powder, the coal gangue powder has a very widely use as following:
1.Mineral Recovery: although the coal gangue has a less coal content, it has coal powder float on the coal gangue, and generally speaking, the coal gangue is full of pyrite, so the first use of coal gangue is use separating method to purify other minerals.
2.Electric Power Generation: after fluidized bed combustion boiler washing, the coal gangue can be mixed with medium coal up, through firing to process electric power, both coal gangue and medium coal are not very high efficiency resource, use this method, can turn waste into treasures.
3.Construction Industry: can be used as raw materials replace clay to process brick, and because the coal gangue can burn, use this method to burn bricks, also can reduce the waste of coal resources.
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