Economic benefits brought by the coal gangue
8 March, 2013 at 5:57 am in Buy & Sell
Coal Gangue Crusher is used for crushing alloy, ferrosilicon powder, caps, cans, PCB, mobile battery and brittle metal material .According to sources are classified according to the coal gangue output that can be divided into the source of coal gangue gangue washing, coal roadway, roadway, gangue gangue gangue and gangue hand selected stripping, some on the spontaneous combustion gangue as well as by category in a class.
Coal gangue was activated by means of calcination in seven temperature ranges. Domestic and foreign coal gangue comprehensive utilization of all countries in the world pay much attention to the treatment and utilization of coal gangue. Since the nineteen sixties, coal gangue comprehensive utilization has attracted a lot of national attention, to 70 time, France, Germany and other countries of the coal gangue utilization rate has reached 30% 50%. Part of coal gangue utilization rate has reached loo%.
The coal gangue can be differentiated and crushed by breakage and grinding equipment, such asjaw crusher, impact crusher, grinding machine, they can be utilized to achieve economic benefit in roughly five aspects:
1. Filling the colliery. The coal gangue can be used as filling materials in underground coal cavity directly or after processing.
2. Filling the ground such as road building.
3. Generating power. Coal gangue containing rich carbon and high calorific value is used for fluidized bed and circulating fluidized-bed power generation.
4. Building materials. The coal gangue is made into gangue brick, cement and lightweight aggregate to act as building materials.
5. Extracted sulfur ore or other chemical products from coal gangue and other
All these utilizations need crushing by jaw crusher, impact crusher, Raymond milling machine, High pressure suspension grinding mill, micro-powder mill.
Treatment and utilization of coal gangue
1. Recovery of coal and pyrite. Through simple techniques, from the gangue in the coal crusher washing well chosen, selected by screening from low quality coal, and pick out of pyrite. Recovery of coal can be powered by fuel, washing waste rock crusher can be used for building materials, and pyrite can be used for chemical raw materials.
2. Used for power generation.
3. Manufacture of building materials: bricks instead of clay as raw material can be dug less fertile. Brick, the use of coal fuel itself, can save coal.
4. Coal can also be used to produce low calorific value gas, manufacturing ceramics, making soil amendment, or used for paving, underground filling, filling the ground to create farmland. After the waste dump on the spontaneous combustion can also be planting crusher grass, landscaping. Comparing with other traditional stone crusher, coal gangue crusher has excellences for fine crushing, high productions and low maintenance. The long force arm designed into the cone crusher provides greater crushing force. And the spring release system generates more opposing force than other traditional stone crushers. So coal gangue crusher is used widely in coal gangue processing industry.
chemical kiln: http://www.china-hxjq.com/p66.html