Investment prospect of coal gangue processing and its equipment selection

The prospect of coal gangue processing is good as solid waste; it can be easily processed and changed into profit. In fact, the coal gangue after initial processing is very wide, both for power generation and building materials, etc., comprehensive utilization is higher after the deep processing.3

Coal gangue to be pile up will not only increase the pressure of the land, affecting the ecological environment, leaching of waste water will pollute the surrounding soil and groundwater, and coal gangue contains a certain amount of combustible material which will spontaneous combustion under appropriate conditions, and emissions of sulfur dioxide, nitrogen oxides, carbon oxides, soot and other harmful gases pollution of the atmospheric environment, affecting the mining area's health.

Comprehensive utilization of coal gangue

1, As a road filling material: coal gangue has good resistance to wind erosion; The use of coal gangue in road construction especially in township roads, can reduce the rate of road construction, improve the environment and reduce the land occupied by coal gangue piled up.

2, The recovery of coal and pyrite: through the selection of low-quality coal from pyrite. Coal recovered from coal gangue can be used as a power boiler mixed with fuel for power generation or heating; washing gangue can be used as building materials; pyrite for chemical raw materials.

3, For power generation: mixed coal washing and washing coal gangue for power generation. China has used the circulating fluidized bed boiler to wash the mixture of coal washing and washing (heat about 2000 kcal per kilogram) for power generation, to use heavy oil combustion when firepower is not enough. Coal power plant and coal selection plant to be built together can realize slime and coal gangue for power generation at the same time.

4, The manufacture of building materials: coal gangue bricks instead of clay, hollow brick blocks, and the construction used light-weight aggregate, etc., and gangue can partially or entirely replace the clay for the production of ordinary cement. The use of coal gangue’s combustible when burning bricks can save coal.

From the perspective of future development, the development of high-tech content, high value-added comprehensive utilization of coal gangue technology and product, will lead to coal gangue processing equipment such as Guilin Hong Cheng jaw crusher, impact crusher, HCH ultrafine mill, ultra-fine vertical mill, vibrating screen, vibrating feeder and other follow-up industry development.

Guilin Hong Cheng coal gangue crushing equipment ultra-fine milling machine-HCH series of ultra-fine mill

(Maximum feed size): ≤10mm

(Machine power): 144-680KW

(Finished particle size): 5-45 μm

(Production capacity): 1-22t/h

(Scope of application): Widely used in ultra-fine grinding of coal gangue, talc, calcite, calcium carbonate, dolomite, potassium feldspar, bentonite, kaolin, graphite and carbon.