Sun et al. [24] activated a mixture of coal gangue and straw in KOH and H2O2 solutions to prepare silicon fertilizer, but the Si that was finally available in the activated coal gangue …
Introduction. Coal, a solid, flammable mineral buried underground by ancient plants that underwent complex biochemical and physical chemical changes to gradually form, has been one of the major energy sources used by the human world since the eighteenth century and is a major source of energy (Lv et al. Citation 2022; Rocha, …
Coal gangue is a kind of solid waste with a low calorific value produced in the process of coal mining and washing. According to statistics, by the end of 2019, China's accumulated amount of ...
Coal gangue is a rock formed by co deposition with coal during the coal formation process. It is a solid waste discharged during excavation, mining, and coal washing processes [12] . At present, China has accumulated over 50 billion tons of coal gangue, and an additional about 500 to 800 million tons of coal gangue will be …
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 …
Coal gangue is the largest form of solid waste emitted during coal mining and coal washing, accounting for more than 20% of China's total industrial solid waste. Among the solid wastes in power plants, the emission of bottom ash is …
Coal-based solid wastes, including coal gangue and fly ash, are produced during coal mining and power generation. These solid wastes accumulate and settle, thereby forming solid waste mountains. Thus, a mass of limited land resources is wasted.
Mixed incineration of municipal solid waste (MSW) in existing coal gangue power plant is a potentially high-efficiency and low-cost MSW disposal way. In this paper, the co-combustion and ...
Abstract. Coal mining and washing is accompanied by the production of large amounts of coal gangue, which exerts a notable influence on the natural environment. …
Coal gangue is a kind of industrial solid waste with serious ecological and environmental implications. Producing concrete with coal gangue aggregate is one of the green sustainable development …
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 h ... 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.
Introduction. Coal, a solid, flammable mineral buried underground by ancient plants that underwent complex biochemical and physical chemical changes to gradually …
Coal gangue is the solid waste produced during coal mining and accounting for about 10–20% of total coal output. It is estimated that about 0.8–1.6 billion tons of coal gangue is produced globally in 2019. However, only less than 30% of coal gangue is utilized [1], most of which is usually piled up in the large areas. Coal gangue contains ...
Coal gangue is the main industrial solid waste that is physically separated from bulk coal during coal preparation. In China, the deposition amount of coal gangue is over 500 million tons with an annual production of more than 70 million tons. Extensive studies have been carried out to find a feasible way to reuse coal gangue in cement …
Coal mining and washing is accompanied by the production of large amounts of coal gangue, which exerts a notable influence on the natural environment. However, as a form of solid waste, coal gangue exhibits a wide range of potential applications in the field of recycling. Nowadays, 'the utilization rate and quality of coal gangue are …
AbstractAmong coal mining-related wastes, coal gangue (CG) is the heterogeneous waste generated during the mineral processing or coal washing phase of …
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 …
The reuse of coal gangue for energy recovery is developing rapidly in China, due to its advantage in achieving both economic and environmental benefits. Low-quality coal is often added to elevate the calorific value of the fuel. In this paper, the combustion characteristics as well as pollutant emissions (SO2 and NO) of coal …
Coal gangue, a solid waste of coal mining accounts for 15–20% of coal production, when directly discharged on the ground surface as waste heaps, it occupies large areas of land and cause ...
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 …
Coal gangue, as a type of solid waste discharged during coal mining and coal washing, occupies a large amount of land resources owing to accumulated …
Coal gangue (CG), an industrial solid waste with high contents of Li and Ga, has attracted the attention of researchers. However, the utilization of CG remains an economic challenge. Pre-enrichment of Li and Ga by flotation was carried out with a view to improving the comprehensive utilization of CG. Mineral composition, time-of-flight …
Mixed incineration of municipal solid waste (MSW) in existing coal gangue power plant is a potentially high-efficiency and low-cost MSW disposal way. In this paper, the co-combustion and pollutants emission characteristic of MSW and coal gangue was investigated in a circulating fluidized bed (CFB) combustor. The effect of MSW blend …
Coal gangue is a kind of industrial solid waste with serious ecological and environmental implications. Producing concrete with coal gangue aggregate is one of the green sustainable development requirements. This paper reviews the properties and preparation methods of Chinese gangue aggregate, studies the influence of gangue …
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 .
Coal gangue as one of the largest industrial solid wastes in China brings about very serious environmental, social and economic problems. Comprehensive utilization of coal gangue is of importance to sustainable development of society and economy. China has made great progress in comprehensive utilization of coal gangue in the latest 40 years …
Coal gangue is a solid waste discharged in coal mining and dressing process. Large-scale decarbonization and activation treatment are key steps toward massive and efficient utilization of coal gangue. In this paper, a new process for the preparation of a cement admixture from coal gangue by effectively utilizing its calorific …
Coal gangue (CG) is a solid waste discharged in coal mining and coal washing, resulting in approximately 8–20% of the total coal output in China [1]. It is the most accumulated industrial waste and occupies the most space [2].
Coal gangue is one of the solid waste materials produced during the production and processing of coal. By 2022, the accumulated amount of coal gangue stockpiles in China reached over 5 billion tons, covering 12,000 ha. It is estimated that it will further increase by 300 million tons per year [15]. Presently, coal gangue is commonly …
DOI: 10.1016/j.pnsc.2024.02.012 Corpus ID: 268401715; Environmental hazards and comprehensive utilization of solid waste coal gangue @article{Zheng2024EnvironmentalHA, title={Environmental hazards and comprehensive utilization of solid waste coal gangue}, author={Qinwen Zheng and Yi Zhou and Xin Liu …
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 of coal gangue, this paper systematically discusses the ways and research status of coal gangue resource …
Coal gangue, produced during coal mining and processing [1, 2], is one of the most extensively produced solid wastes in China [1, 3], accounting for …
Coal gangue is one of the industrial solid wastes that may harm the human body through the ecosystem for a long time. Using coal gangue in geopolymer preparation can effectively reduce cement output and meet the sustainability requirements. In this paper, the physical and chemical characteristics, including the heavy metal content, of …
The aggregate is composed of coal gangue sourced from Daizhuang Coal Mine, Shandong, China. Coal gangue is typically employed as a filling aggregate in coal mines, with a maximum particle size of 25 mm (1 in), frequently requiring preliminary crushing and screening via jaw crusher [14].The CPB for coal mines belongs to the …
Coal gangue is a kind of solid waste produced in the process of coal mining and washing. Its silicon aluminum silicon aluminum oxide content is high, respectively, which are suitable for resource utilization as raw materials for Si–Al molecular sieving. In this paper, a novel, simple, low-cost, and environmentally friendly process was carried ...
Currently the main method of mine solid waste disposal and utilization is to apply gangue to underground filling. For the grading characteristics of coal gangue in the hollow zone in underground ...
Coal gangue is a rock mixed with organic and inorganic compounds co-deposited with coal during coal formation. Usually in a thin layer and in the coal seam or in the top and bottom of the coal seam, gangue is typical solid waste discharged when coal is excavated and washed in the production. In China, the total of accumulative stockpile …