Environmental protection is China’s basic national policy, with the state environmental protection law enforcement continued to increase awareness of environmental quality requirements increase, to solve the problem of coal waste pollution has become increasingly prominent, coal gangue power generation is an effective heat full use of coal gangue ingredients, turning waste into treasure, an effective way to solve the pollution
Recycling coal and pyrite: by a simple process, from coal gangue good coal washing elect, by screening to choose the low-quality coal, but picked pyrite. Or ── shaker flow plane recovered pyrite from coal preparation used jig, wash mixed coal and coal. The recovered coal can be used for power boiler fuel, construction materials can be used for washing gangue, pyrite can be used as chemical raw materials.
For power generation: mainly used in coal washing and washing Refuse co-firing power generation. China has been washed and washed coal gangue mixture (heat about 2,000 kcal per kilogram) fluidized bed furnace combustion for power generation. Slag to produce slag brick and slag cement
Coal Mining Processing Technology and used machines:
A After the crusher used in power generation: mainly used in coal washing and washing Refuse co-firing power generation, general heat per kilogram of 3,500 kcal.
Second, the recovery of coal and pyrite Method two: recovering the plane shaking process pyrite, wash mixed coal and coal from Coal Preparation jig ──.
Three recycling coal and pyrite Method 1: Through a simple process, which were selected by screening for good coal and low-quality coal, but picked pyrite. The recovered coal can be used for power boiler fuel, construction materials can be used for washing gangue, pyrite can be used as chemical raw materials.
Four manufacture of construction materials: bricks instead of clay as a raw material, can be less fertile dig.
A large number of stacked gangue, not only occupied land pressure, ecological impacts, waste rock leaching water surrounding soil and groundwater pollution, and coal gangue contains some combustible material, spontaneous combustion occurs under suitable conditions, emissions of sulfur dioxide, nitrogen oxides , carbon oxides and soot and other harmful gases pollute the atmosphere, affecting the health of the mining area residents. “Eleventh Five-Year” period, China’s coal industry will vigorously develop the circular economy, in accordance with the reduction, reuse, recycling principles, focusing on governance and the use of coal gangue, mine water and fly ash, coal gangue and other low calorific value fuel power plant in the use of 200 million tons; the use of 090 million tons of coal gangue brick; road construction and underground coal waste reclamation and make fields filled consumptive 100 million tons or more. Produce 5 billion cubic meters of mine water, the use of 3.6 billion cubic meters, utilization rate of 70%.