Contents Catalog
Gangue is solid waste generated during coal mining and coal washing. Its main components include rocks, soil and other impurities. Although it contains a small amount of coal, it has been regarded as useless in the past. With the improvement of environmental protection requirements and the advancement of comprehensive resource utilization technology, its treatment and utilization have become a hot topic in the mining, construction and energy fields. Scientific development of gangue resources can not only reduce environmental pollution, but also create significant economic and social benefits.
Main Uses of Gangue
Mine Backfill
Gangue can be used as mine backfill material to fill the voids left after mining and reduce the risk of surface subsidence and land degradation. It has good stability and filling performance, and can effectively fill the mine pit; after mine backfilling, land reclamation can also be carried out to help restore the natural ecological environment on the surface.
Building Materials
After proper processing, gangue can be used as a raw material for building materials and is widely used in the construction industry. Through screening, crushing, sintering and other processes, it can be made into building materials such as bricks and blocks; it can also be used to produce artificial sand to reduce the demand for mining natural sand and stone resources. The use of coal gangue to prepare building materials can not only reduce production costs, but also reduce the impact of building materials on the environment.
Energy utilization
Although the coal content in coal gangue is low, it can still be converted into usable energy with the help of advanced technical means. The use of pyrolysis technology can convert the coal in it into combustible gas or liquid fuel to achieve energy recovery; coal gangue can also be used as auxiliary fuel for power plants to provide supplementary energy for power production, and its potential value can be fully tapped through energy utilization.
Environmental restoration
For abandoned mining areas, reasonable treatment of coal gangue is conducive to environmental restoration and ecological improvement. By sorting, sealing and covering coal gangue, the risks of wind erosion, water erosion and acid emissions can be effectively reduced; covering can reduce soil pollution and promote vegetation recovery; scientific sealing can also help prevent harmful substances from seeping into groundwater and improve water quality.
Is the gangue processing equipment fixed or mobile?
The fixed type means that the jaw crusher, impact crusher, sand making machine and other equipment are installed on the rented site by piling and building a cement platform.
The mobile type is to integrate the crushing and sand making equipment into an integrated structure on a tire-type body or a fully hydraulic crawler chassis, so that it can directly enter and exit the site for operation.
Technical Parameters
| NK75J Mobile Station | NK100E Mobile Station | NK1213C Mobile Station | ||
| Total Power | 141.4kW | 138.5kW | 228.5 kW | |
| Total Weight | 39T | 35T | 31T | |
| Processing Capacity | 150-350t/h | 150-350t/h | 150-300t/h | |
| Feed Hopper | Volume | 6m³ | 6m³ | 6m³ |
| Width | 2500mm | 2500mm | 2500mm | |
| Vibrating Feeder | Model | FK0936 | FK0936 | FK0936 |
| Loading Width | 960mm | 960mm | 960mm | |
| Loading Length | 3600mm | 3600mm | 3600mm | |
| Crusher | Model | PE3040 Jaw Crusher | PE3040 Jaw Crusher | CI5X1213 Impact Crusher |
| Motor Power | 110kW | 110kW | 200kW | |
| Feed Depth | 760mm | 760mm | – | |
| Feed Width | 1000mm | 1000mm | – | |
| Max Feed Size | 680mm | 680mm | 550mm | |
| Discharge Opening | 70-150 | 70-150 | >30mm | |
| Discharge Conveyor | Belt Width | 1000mm | 1000mm | 1000mm |
| Discharge Height | 2950mm/3500mm | 3639mm | 3639mm | |
Advantages of comprehensive utilization of coal gangue
Reduce environmental pollution
The stacking of coal gangue not only occupies land, but also pollutes the surrounding environment. Through resource utilization, its negative impact on the environment can be effectively reduced.
Save natural resources
Using coal gangue as an alternative material can reduce the mining of natural resources such as clay, sand and gravel, and alleviate the pressure of resource shortage.
Precautions for the use of coal gangue
The composition and characteristics of coal gangue vary greatly depending on the origin and type. In practical applications, its chemical composition and physical properties must be strictly tested to ensure that it is suitable for specific purposes; before use, economic, environmental and other factors should be comprehensively considered to formulate a reasonable utilization plan; advanced processing and treatment processes should be adopted to improve utilization efficiency and product quality; environmental protection laws and regulations should be strictly observed during the use process to avoid causing new environmental pollution.
