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About 50 million tonnes/year of waste rock from coal-mining is generated in the limited area of the thickly populated Upper Silesian Coal Basin (USCB) in Poland. There are 380 coal-mining waste dumps, including 76 active dump sites covering over 2,000 ha. About 15-16 million tonnes/year of waste rock is being reused for civil engineering purposes in …
Mining and metallurgical processes produce significant amounts of waste. In South Africa, mining and metallurgical wastes constitute one of the biggest challenges to the environment.
PDF | Mechanized mining of hard coal results in generating waste estimated at 30-50% of coal output. Although not considered a hazardous waste, it is... | Find, read and cite all the research you ...
Wastes produced during coal preparation (removal of undesired materials from coal through coal washing, crushing, …
Using Dongtan (DT), Nantun (NT) and Xinglongzhuang (XLZ) coal mines as examples, the components of coal mining wastes and their potential pollution contribution to soil, surface water and ground...
The term mine waste implies that the material has no current economic value and is an unwanted by-product of mining. However, some mine wastes can be useful and this has been recognized since the beginning of mining and smelting . For example, the use of slag in road construction can be traced back to the very early days when the …
Studies on coal mining by-products have been conducted with materials from different origins, such as landfills (10)(11)(12), collected directly from washing plants (13) or coal sludge wastes (10,14).
A total of 32 arsenic resistant bacterial strains were isolated and identified from the mining wastes of Shangrao coal mine of China and analysis of 16S rDNA revealed that they belong to 4 different phylogenetic Clades. A total of 32 arsenic resistant bacterial strains were isolated and identified from the mining wastes of Shangrao coal mine of China. …
The situation of coal mining wastes disposal at Yanzhou coal mining area The total raw coal production produced by Yanzhou Coal Mining Company from 1977 to 2005 is 461.58 million tons.
Mining and processing wastes comprise the largest group of industrial wastes generated and deposited in Poland. Among these, wastes from hard coal mining and processing traditionally constitute the most important group, currently generated at a level of 29-33 million Mg per year, with approx. 85% being utilised. Hard coal wastes …
AMD solution obtained from another local coal mine was percolated over the coal samples packed in 1 m and 6 m columns, until the pH of the accumulated drainage solution measured approximately pH 7.
This paper consists of the evaluation in regards to the ecotoxicological effectiveness of a treatment applied to a coal mining waste. The treatment consisted of separating the particles based on gravimetric concentration in spirals, generating three fractions: heavy, intermediate, and light, with high, moderate, and low pyrite content, …
This chapter focuses on the coal mining waste situation globally and describes efforts to reuse coal mining waste and recover lost coal. Case studies on a …
Surface/open cast mining and deep underground mining are considered two basic methods for coal extraction globally. The rising trend of coal mining activities has resulted in the accumulation of mining and processing wastes with low carbon levels over the past few decades [6]. Fig. 1 presents different life cycle stages of coal with details of …
37 coal mining wastes have been viewed as problematic geomaterials. They are chemically Journal of Cleaner Production, Submitted Oct 2021; Published Dec 2021.
Mineral waste can be defined as a material leftover from exploration, mining and quarrying operation that cannot find a productive use. It is the high-volume material that originates from the excavation and physical and chemical processing of a wide range of metalliferous and non-metalliferous minerals by opencast and deep shaft methods [].The …
Mine wastes are unwanted, currently uneconomic, solid and liquid materials found at or near mine sites. Mining waste originates from the processes of excavation, dressing and further physical and chemical processing of wide range of metalliferous and non-metalliferous minerals by opencast and deep shaft methods.
Improperly managed waste can leach contaminants into nearby water bodies, affecting aquatic life and potentially entering the food chain. The environmental impact of coal …
Waste from coal mining is managed, however only in 44%. Among the waste related to coal mining and processing, the following types of waste are distinguished: …
The book emphasizes characterization, prediction and monitoring of problematic mine wastes; Focusing on environmental impacts; Case studies from around the world; Includes supplementary material: …
The state-dependent properties of coal mining wastes (e.g., water retention, hydraulic conductivity, shear strength) are found to be governed by complex factors such as coal content,...
View PDF; Download full issue; Search ScienceDirect. Fuel. Volume 373, 1 October 2024, 132341. Review article. ... Coal mining wastes and coal processing by-products, being rejected from the production processes of the commercial coal products, contain high amounts of impurities, especially sulphur, various heavy metals and mineral matter. ...
Annual volumes of the coal-mining and processing wastes st ored on the territory of Russia are approximately 15 million tonnes [1,2]. As a rule, during surface mining one ton of coal leaves 4 tons ...
The co-disposal of fine and coarse mine wastes by combined pumping to an impoundment has the potential to significantly reduce the problems associated with the conventional separate disposal of ...
Download Free PDF. Download Free PDF. Optimizing the formulation of coal gangue planting substrate using wastes: The sustainability of coal mine ecological restoration ... Soil properties in reclaimed farmland by filling subsidence basin due to underground coal mining with mineral wastes in China. Trans. Nonferrous Metals Soc. China 24 (8 ...
A typology of the known impacts arising from mine voids and wastes in coal mining districts has been developed, which recognizes many subcategories of impacts under five major headings: air ...
The results implied that soil catalase activity in NSA and ureases activity in the 20–40 cm soil layer of NSA and OSA were significantly enhanced after vegetation restoration, and that long-term plant restoration could improve soil fertility and soil microbial community diversity in coal mining areas.
Mine wastes are the largest volume of materials handled in the world (ICOLD, 1996). The generation of acidic drainage and the release of water containing high concentrations of dissolved metals ...
This study probe the probable impacts of coal mining pollution and its impacts on human's health and environment. A total of 144 samples including coal and coal wastes, soil, plants, foods, and water were collected from the Hancheng county and countryside of Shaanxi, China.
Long-Term Application of Organic Wastes Improves Soil Carbon and Structural Properties in Dryland Affected by Coal Mining Activity May 2021 Sustainability 13(10):5686