Coal gangue is solid waste discharged from the process of coal mining and washing. It is low
carbon
dark gray rock that is much harder and associated with coal seams.
1. Coal gangue will be used for electricity production after primary crushing by crusher: mainly
co-fire
washed medium coal and washed gangue to generate electricity. The generally heating value is
3,500
kcal per kilogram; 2. Recycling coal and pyrite Method Two: recycle pyrite, washed mixing
coal
and medium coal from coal preparation jigger- shaker flow plane; 3. Recycling coal and
pyrite
Method One: By simple technology, to wash and elect high quality coal from coal gangue, at the
same
time, screen out low-quality coal and pick out pyrite. Or recycle pyrite, washed mixing coal and
medium coal from coal preparation jigger- shaker flow plane. The recycled coal can be used for
power
boiler fuel, washed gangue can be used for construction materials, and pyrite can be used as
chemical
raw materials;
4. To produce building materials: Using coal gangue for brick production instead of clay as
a raw material, by this way, can reduce fertile land dig;