Staff Service — Time-saving · Accurate · Efficient
Time-limited Offer, Timely Technical Support
Get Price Staff Service
With professional grinding technology and one-stop engineering services, Zenith helps Indian mining areas realize the value transformation of coal gangue from an environmental burden to a high quality resource. This project not only implements a proven model for high value utilization of bulk solid waste, but also fully demonstrates the brand’s core technological strength and service capabilities in solid waste grinding system integration and overseas project delivery.
Coal gangue is an industrial solid waste generated during coal mining, tunneling and coal washing processes. As one of the world’s major coal producing countries, India’s key mining regions produce massive volumes of coal gangue year round. Its historical stockpiles keep accumulating, with a high annual newly generated discharge. Gangue piles stored in the open air are likely to cause environmental problems including land occupation, dust pollution and spontaneous combustion, bringing growing pressure on solid waste disposal in mining areas.
At present, comprehensive utilization of coal gangue in India remains relatively extensive. It is mostly applied in low end fields such as road subgrade paving, common brick making and power generation by blending with low calorific value fuel. The deep processing utilization rate for high value added products is extremely low, leaving a prominent gap in resource oriented utilization. Mature and complete grinding process & equipment solutions are in urgent demand. With refined grinding and deep processing technologies, the diversified resource value of coal gangue can be fully tapped and unlocked.
What Are the Core Application Fields of Coal Gangue?
Building material Utilization: It can be processed into unfired bricks, ceramsite, cement raw meal and road base aggregate, meeting raw material demands for India’s infrastructure projects and rural construction.
Energy Recovery: Used as low calorific value fuel for power generation at pit mouth power plants and district heating in mining zones to recover energy from solid waste.
Chemical Utilization: Alumina can be extracted from aluminum rich coal gangue, and associated rare metals such as gallium, scandium and germanium can be recycled to improve the utilization rate of mineral by resources.
New material Sector: After refined grinding and deep processing, coal gangue can be made into highend functional new materials including calcined kaolin, ceramic body raw materials, refractory substrates and molecular sieves.
Ecological Restoration: It is applied to backfill goafs and treat subsidence sites in mining areas, so as to effectively mitigate ground subsidence and restore the ecological landform of mining zones.
In recent years, India has continuously improved its solid waste management policies, clarifying the coal gangue disposal responsibilities of coal mines and thermal power enterprises. This drives the shift of solid waste treatment from simple landfilling and stockpiling to resource based and eco friendly recycling.
Leveraging abundant local coal gangue resources and policy incentives, a mining site in India has launched a 100,000 TPA coal gangue grinding production line. The finished powder is mainly used as the core raw material for refractory materials. In consideration of project capacity targets, particle size specifications and on site plant conditions, Zenith customizes and optimizes the overall process layout to deliver streamlined workflows and a compact footprint, controlling investment costs while ensuring long term economic benefits for the project.
According to the material characteristics, Zenith’s technical team carried out on site sampling and composition analysis, and developed a full process customized solution covering raw material pretreatment, precision grinding, intelligent classification and environmental friendly dust collection.
Zenith MTW European Trapezium Grinding Mill is selected as the core equipment of the production line. Optimized iteratively under various solid waste grinding working conditions, the mill adapts to the complex material properties of coal gangue. It can meet the requirements of large scale, continuous and stable powder production, balancing high throughput and low energy consumption operation.
The mill is equipped with an intelligent control system, which enables realtime monitoring and dynamic adjustment of grinding parameters to ensure continuous and stable operation of the production line. The grinding rollers and grinding ring are made of highwearresistant alloy material, which greatly extends the service life of wearing parts and cuts down equipment operation and maintenance costs. Fitted with a highprecision cagetype powder classifier, the system can accurately control powder particle size and passing rate, eliminate coarseparticle residue, and guarantee uniform particle size and stable quality of finished products. The whole production line adopts a negativepressure closedloop circulating design together with a pulse dustremoval system to effectively control dust emissions and realize clean and safe production.
After the project is put into operation, the finished powder boasts regular particle shape and homogeneous composition, fully meeting the strict raw‑material specifications for refractory material manufacturing. The project can consume 100,000 tons of waste coal gangue annually, turning idle solid waste into highgrade refractory raw material. It effectively reduces bauxite mining and cuts the industrial carbon footprint, serving as a benchmark project for solidwaste recycling and lowcarbon development in India’s mining areas.
From tackling accumulated solid waste in mining areas to remanufacturing industrial powder raw materials, Zenith leverages professional grinding equipment technology and onestop project services to help customers realize the value upgrade of coal gangue from an environmental burden to a recyclable resource. As a landmark project for Zenith to explore the highvalueutilization market of bulk industrial solid waste in India, it further demonstrates the brand’s comprehensive strength in solidwaste grinding EPC contracting and onsite projectimplementation.
leave your message here, we'll send you
an Email immediately.
