pdf on coal mining wastes

Coal mine wastes recycling for coal recovery and eco …

The mining industry is globally criticized for generating large amount of solid wastes often with a potential environmental impact. This study presents a feasible approach of recovering residual coal from coal mine waste rocks (CMWR) and reusing the derived tailings to produce ecofriendly fired bricks. The first step aims at the production of ...

(PDF) Evaluation of toxic and hazardous waste management in coal mining

Coal is a relatively abundant energy source, especially in East Kalimantan Province. PT X is one of the coal mining companies that has experienced increased demand to meet consumer needs.

Brick production and characterization containing coal mining waste

The study was conducted to examine the usability of coal mining wastes as a brick building material. The study has involved the addition of coal mining wastes obtained from different stages of coal production processes, which are pulverized by dry grinding, into the brick clay in varying proportions (0–), shaping by the pressing …

Waste management in the mining industry of metals ores, …

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 …

(PDF) Use of Coal-Mining and Processing Wastes in Production of …

The methodology considered the following steps: sampling of a coal mining waste; gravity separation of the fraction with specific gravity between 2.4 and 2.8; comminution of the material and ...

Compressive Strength of Concrete with Coal Mining Waste

Coal mining waste (CMW), a by-product of the mining and production of coal accounts for about 15% of coal production, which varies from 10 to 15% with the change in geological and mining conditions [].The majority of CMW has been dumped as cone-shaped heaps and tips, with the potential to cause environmental problems and …

(PDF) Waste disposal in coal mining—a …

Waste disposal in coal mining—a geotechnical analysis. Authors: Andrew Leventhal. GHD Geotechnics. L.P. de Ambrosis. Abstract. The disposal of waste products from coal beneficiation...

[PDF] Coal mining wastes valorization as raw geomaterials in

Coal mining wastes valorization as raw geomaterials in construction: A review with new perspectives. Thanh Vo, William Nash, +4 authors. L. Ferrara. …

Coal mining waste in Poland in reference to circular

Various examples of industries are the coal mining industry [2, 3], the phosphate mining industry [4], or a large deposit of mining wastes of an albite deposit in south Spain that could be of ...

Recycling Utilization Patterns of Coal Mining Waste in China

The average production of coal mining wastes is about. 15% of coal production, which varies from 10 to 15% with the change. of geological and mining conditions. Therefore, it is estimated that ...

(PDF) ENVIRONMENTAL IMPACTS AT COAL WASTE …

During beneficiation of coal at the coal mining area of Tula, Russia, huge volumes of coal wastes with considerable residual pyrite content are produced. These wastes that are usually disposed of without specific care in the environment are active sources of coal mine drainage generation which severely contaminates soils, surface- and ...

A systematic review exploring the utilization of coal mining …

Likewise, the mining wastes have been referred to as coal OB [35], [36], [37] or coal rejects [38], or tunnel gangue [31] by many researchers. For ease of understanding, the term "overburden" (OB) is used for the wastes generated at the time of mining, and "tailing" is used for the wastes generated during the preparation of coal, in ...

A systematic review exploring the utilization of coal mining …

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]. …

(PDF) Distribution and environmental impact of coal-mining wastes …

Distribution and environmental impact of coal-mining wastes in Upper Silesia, Poland

Soil properties in reclaimed farmland by filling

Reclaimed mining-induced subsidence area soils (RMSs) could restore soil quality and crop productivity in coal mining area. This study was conducted to evaluate the effects of mineral-processing wastes (fly ash vs coal gangue) as backfill substrates on soil chemical and microbial properties in mining-induced subsidence area.

(PDF) Recovery of Mining Wastes in Building …

In mining, mineraliz ed wastes come from three m ain sources: mining explo ita- tion, mineral proces sing and metallur gical processing. The typology of mi ning waste depend s on its origin.

Biodiversity conservation threatened by global mining …

TSFs store mining waste to avoid its interaction with the envi-ronment. However, understanding the threats their failures pose to biodiversity is important and useful to guide conservation and ...

(PDF) The potential of coal wastes in South Africa

The typical raw coal from most South African collieries has. about 25–35% ash, 22–24% volatile matter, and 44–50%. fixed carbon. In contrast, the discard coal typically has well. over 40% ...

Environmental impacts of coal mining and associated wastes…

The environmental consequences arising from coal mining voids and wastes can be summarized under five major headings: air pollution, fire hazards, ground deformation, water pollution, and water ...

(PDF) Environmental impact of coal mining on water regime …

The sampling of coal, coal tailing, drainage water from coal tailing, factory's waste water, secondary surface minerals and river water have been carried out in summer in 2005. On the basis of geochemistry and mineralogy results indicate that the amount of Fe2O3, SO3 and heavy metal have decreased strongly in coal tailing of Zirab coal ...

Mine Waste as Resource: Indian Mining Scenario of …

3.1 Processed sand. The waste material from coal mining in India comprises mainly of sandstone, bands of clay and other metamorphic rocks. The sandstone ranges from coarse grain to fine grain. The waste rock generated to expose coal is normally backfilled, still a major volume is stacked over non coal area.

(PDF) Valorization of South African Coal Wastes …

Sustainable management of coal waste is one of the major environmental concerns for coal mining, whether active or legacy, worldwide. Coal dump deposits demand a large physical area or …

(PDF) Life-cycle assessment of coal mining wastes upcycling …

PDF | On Jun 28, 2023, S. Muller and others published Life-cycle assessment of coal mining wastes upcycling | Find, read and cite all the research you need on ResearchGate

(PDF) ENVIRONMENTAL IMPACT OF COAL MINING ON …

The sampling of coal, coal tailing, drainage water from coal tailing, factory's waste water, secondary surface minerals and river water have been carried out in summer in 2005. On the basis of geochemistry and mineralogy results indicate that the amount of Fe2O3, SO3 and heavy metal have decreased strongly in coal tailing of Zirab coal ...

2.2 Types of Mining Wastes – Hydrogeology and Mineral …

Figure 3 – Waste rock from an open pit operation has a wide range in particle size, and significant variability from one location to the next within the stockpile.. Spent Heap leach. In heap leach mining operations, rock is placed in constructed piles on the ground surface in multiple lifts and a chemical solution is repeatedly passed through the heap to dissolve …

Effect of activated coal mining wastes on the properties of …

Frías et al. [24] studied blended cement mortars with 3 different thermally activated coal waste types (ACW) in the amount of 10 and 20 wt% and reported that at 28 and 90 days all ACW blended ...

(PDF) INVESTIGATION OF GEOTECHNICAL PROPERTIES OF COAL MINE WASTE…

The methodology considered the following steps: sampling of a coal mining waste; gravity separation of the fraction with specific gravity between 2.4 and 2.8; comminution of the material and ...

(PDF) Mining Waste and Its Sustainable …

the environment has led to an increase in the research in this field. The aim of this study was to. analyze the dynamics of the research focused on mining waste and its sustainable management on ...

Management of coal combustion wastes

Management of coal combustion wastes 5 Burning coal in a coal-fired power plant produces a variety of solid residues known as coal combustion products (CCPs), coal combustion residues (CCRs) or coal combustion wastes (CCWs). CCPs are now more commonly called coal combustion by-products (CCBs) because of their increasing …

(PDF) Coal mining waste management and its …

The paper is focused on the impact assessment of coal mining waste management practices exemp-lified in different objects …