The Current Situation Research on Comprehensive Utilization of Coal Gangue
Coal gangue is the largest amount of industrial solid waste in China. It caused serious damage to the ecological environment and waste resources. Therefore, it is of great significance to realize the resource utilization of coal gangue, protecting the environment and realizing the sustainable development of society. This paper …
Preparation of coal gangue ceramsite high-strength …
Coal gangue (CG) is a type of industrial solid waste produced by the process of coal excavation and separation 1,2,3.Generally, one ton of CG is discarded for every 10 tons of produced coal 4,5. ...
Comprehensive utilization and environmental risks of coal gangue…
China's total coal production in 2021 exceeded 4.13 billion tons, 52% of the world's total. Coal gangue, a solid waste of coal mining accounts for 15–20% of coal production, when directly discharged … Expand
Ministry of Coal, Government of India
The company produced 67.14 million tonnes of coal during 2022-23 as against 65.02 MT during the same period of previous year. SCCL production of coal during 2023-24 was 70.02 MT with a positive growth of 4.30%. Small quantities of coal are also produced by TISCO, IISCO, DVC and others. 2024-2025. COAL PRODUCTION AND OFFTAKE …
(PDF) Application of Coal Gangue as a Coarse Aggregate in …
Among the techniques for converting stacked coal gangue to reusable material, one of the most effective ways is to use coal gangue as a coarse aggregate in green concrete productions.
Sustainable and clean utilization of coal gangue: activation …
Coal gangue, a by-product produced during the coal processing, has a serious impact on the environment. Using coal gangue as a fertilizer has been proven …
Coal Mine Solid Waste Backfill Process in China: Current …
Coal mine solid waste backfill is a coal mining method employed to safeguard subterranean and surface geological formations, as well as water resources, against impairment. It stands as a pivotal technical approach for realizing ecologically sustainable mining endeavors, aiming to address China's predicament of 'three down' …
Cascade network for detection of coal and gangue in the production …
In view of the varied granule dimension amid actual production process, multifarious multi-scale object detection algorithms have found applications to coal-gangue detection.
Associations of Gangue Minerals in Coal Flotation …
connected with the gangue and needs to be ground to achieve further dissociation. Kaolinite (Al 2 O 3·2SiO 2·2H 2 O) and quartz (SiO 2) are two typical minerals in gangue.16−18 In the flotation process, these gangue minerals may enter into clean coal products through coating or entrainment. Numerous studies
Utilization of coal gangue sand in structural concrete as fine
Download Citation | On Feb 1, 2024, Tong Zhang and others published Utilization of coal gangue sand in structural concrete as fine aggregate towards sustainable production | Find, read and cite ...
Migration transformation, prevention, and control of typical …
Coal gangue is one of China's main industrial solid wastes, which contains various harmful heavy metal elements, such as lead (Pb). The long-term accumulation of coal gangue causes Pb to migrate to the surrounding environment due to weathering and rain erosion, eventually endangering human life and health with its continuous …
Characterization studies on coal gangue for sustainable geotechnics
Global rise in greenhouse gas emissions (GHG) is triggered mainly due to the consumption of fossil fuels for power generation and domestic usage. Among the fossil fuels, coal is a primary contributor to global GHG with substantial emissions generated during its mining and combustion process. Coal gangue, a residue produced during …
Mineral phase transformation in coal gangue by high …
Coal gangue is the solid waste from the coal mining process. About 1 billion tons of coal gangue is discharged every year in the world. Coal gangue is usually piled up in the large areas and ...
(PDF) Power Generation from Coal Gangue in China: …
The gangue production accounts for approximately 15% of the total amount of coal produced in China. China is currently the world's largest coal producer and consumer [2]. Total amount of coal gangue has reached more than 4.5 billion tons in 2007 and the number of large coal mine waste dump has reached 2600 [3].
Excess sulfur and Fe elements drive changes in soil and
Coal mining is indispensable due to the widespread use of coal, and gangue is the accumulated solid waste byproduct that persists in mined lands, even after the mines have been abandoned 1.In the ...
Sustainable and clean utilization of coal gangue: …
Coal gangue, which is the main source of citrate-soluble silicon fertilizer, is a solid waste produced in the process of coal processing and utilization. Due to the accumulation of a large amount of coal gangue and the failure to fully utilize or dispose it, it caused problems on the environment
How to Recycle and Process Coal Gangue: 7 Effective Ways
It solves the problems of weak spheroidization of iron tailings and difficult expansion of coal gangue. CGC production process: 1 Coal gangue is crushed by a jaw crusher and ground by a ball mill. Raw materials are screened using a 100-mesh vibrating screen. 2 Mix raw materials (55% coal gangue and 45% iron tailings) to make particles …
Excess sulfur and Fe elements drive changes in soil and
Coal mining is indispensable due to the widespread use of coal, and gangue is the accumulated solid waste byproduct that persists in mined lands, even …
Characterization studies on coal gangue for sustainable …
Global rise in greenhouse gas emissions (GHG) is triggered mainly due to the consumption of fossil fuels for power generation and domestic usage. Among the fossil …
COAL PRODUCTION AND DISPATCH
COAL PRODUCTION AND DISPATCH 1. Coal Production The all-India coal production for the calendar year 2023 is 968.61 Million Tonne (MT) (provisional) as compared to 864.26 MT coal during the same period of last year with a growth of about 12.07%. The Company-wise details of coal production from CIL, SCCL and Others are given below: -
Comprehensive utilization and environmental risks of coal …
When coal gangue were used to produce alumina and silicon, the contents of Al 2 O 3 and SiO 2 should be greater than 35% and 30%, respectively. It is difficult to …
Effect of Activated Coal Gangue in North China on the …
For comprehensive utilization of the coal gangue from different locations, coal gangues were calcined at temperatures of 800°C, 900°C, and 1,000°C for 2 h, respectively, and then blended in ...
Year-on-year change in coal production in China's major coal …
Year-on-year change in coal production in China's major coal producing regions by mine size, 2018-2019 - Chart and data by the International Energy Agency.
Research Progress on Comprehensive Utilization …
Coal gangue is one of the largest mine solid wastes in China, and its discharge and stockpiling have caused resource waste, environmental pollution and other problems. Starting from the resource characteristics …
Road Performance Evaluation of Unburned Coal …
At present, the cumulative storage of coal gangue in China exceeds 7 billion tons, covering an area of approximately 70 km2. The engineering application of unburned coal gangue is mainly utilized as …
The Relationship between Acid Production and the …
Coal gangue is a solid waste produced during coal mining and washing, accounting for approximately 10~15% of the total coal production . In China, more than 5 billion t of coal gangue has accumulated, and it is still growing at …
Molecular simulation of CO production and adsorption …
Through molecular simulation, Wang11 found that the adsorption amount of H2 is positively correlated with the coal rank and a ected by the chemical properties and pores of. the …
The Sustainable Utilization of Coal Gangue in Geotechnical …
Among coal mining-related wastes, coal gangue (CG) is the heterogeneous waste generated during the mineral processing or coal washing phase of coal mining. A …
Coal
Coal is a black or brownish-black sedimentary rock that can be burned for fuel and used to generate electricity.It is composed mostly of carbon and hydrocarbons, which contain energy that can be released through combustion (burning). Coal is the largest source of energy for generating electricity in the world, and the most abundant fossil fuel …
Research on the hydration process of cemented coal gangue …
Backfill mining is an effective method for solving problems caused by coal mining. Backfill mining is performed by mixing solid waste, such as coal gangue and fly …