mining coal selective

Selection and analysis of mining equipment for selective coal mining …

Made available by U.S. Department of Energy Office of Scientific and Technical Information ...

Mining value from waste: Scandium and rare earth elements selective …

DOI: 10.1016/j.mineng.2021.107091 Corpus ID: 244183362; Mining value from waste: Scandium and rare earth elements selective recovery from coal fly ash leach solutions @article{Mostajeran2021MiningVF, title={Mining value from waste: Scandium and rare earth elements selective recovery from coal fly ash leach solutions}, author={Mehdi …

SELECTIVE MINING – maysahmining

Selective mining is a strategic approach that balances the economic benefits of resource extraction and blending with environmental and social considerations. It is commonly used in various types of mining, including metal mining, coal mining, and quarrying. Call Us Today ! + (678) 559-8900.

From Mining to Refining

But knowing the distribution of the different coal qualities in the coal seam, a selective mining is possible; the coal qualities are separated on face and delivered to …

Equipment selection for high selective excavation …

In the high selective mining, 4.47 million tonnes of ROM coal having an average calorific value of 1761 kcal/kg will be processed by three crushing-screening units, each with 800 tonne/h capacity. Since the coal quality for the power station is ROM there will be no further sorting or processing needs.

Improving CH4/N2 selectivity within isomeric Al‐based …

Selectively separating CH 4 from N 2 in coal-mine methane is significantly important in the chemical industry, but challenging and energy-intensive. Using porous materials as adsorbents can separate CH 4 /N 2 mixtures with low energy consumption, but most adsorbents encounter the problem of poor separation selectivity. Here, we propose …

Equipment selection for high selective excavation surface coal mining …

Made available by U.S. Department of Energy Office of Scientific and Technical Information ...

Developing selective mining capability for longwall shearers …

It has been estab-lished that with selective mining of the coal seam in one pass of the shearer in the range of the mining thickness mв min = 1.16 - 1.22 m, the entire volume of the undercut rock ...

Erosion Management of Riparian Ecosystem in Coal Mining …

The study was aimed to identify the efficient soil conserver plant species on the coal mine over burden and on the riparian ecosystem. 1.1 Coal Mining. The coal mining activity degrades major areas of land and replace the existing ecosystem with undesirable waste materials (coaly matter/shale) which gets deposited on the surface in …

Coal Subsurface Mapping for Selective Mining | IEEE …

Coal Subsurface Mapping for Selective Mining Abstract: There is a need for a reliable coal seam sensing system to provide selective mining capabilities for open-cut coal …

Coal mine gas concentration prediction model based on selective …

For the purpose of achieving accurate gas concentration prediction, and effectively preventing the occurrence of the coal mine gas accidents, a model of selective ensemble learning based on Yager norm is studied in this research, on the basis of parametric fuzzy logic operation model, via forward sequential selection strategy. Such models as …

Coal mine gas concentration prediction model based on selective …

Download Citation | On Jun 1, 2018, Rong Liang and others published Coal mine gas concentration prediction model based on selective ensemble learning | Find, read and cite all the research you ...

Reclamation of overburden and lowland in coal mining area …

Section snippets Study sites. The study was carried out at (Site A) coal mine spoil comprising 2.0 ha (20,000 m 2) area (20 m height; 30% slope) in Eastern Jharia area of Bharat Coking Coal Limited (period 2000–2003), and (Site B) lowland of about 8.4 acre (33,600 m 2) having 3–4 m depth filled with fluidized bed combustion (FBC) ash of Tata …

Equipment selection for high selective T excavation …

Equipment selection for high selective excavation surface coal mining Seyitömer Lignite Enterprise of the Turkish National Coal Board (SLE) is one of the largest coal producers in Turkey and produces 7.5 million tonnes of lignite coal per year from an opencast mine close to the city of Kütahya (Figure 1).The

Equipment Selection for High Selective Excavation …

This increases the ash content of the run of mine coal and results in lower efficiency at the power station and financial penalties for SLE. In this paper, therefore, selection of the …

Selective placement of overburden in surface coal mining

@article{osti_5399706, title = {Selective placement of overburden in surface coal mining - problems and mining planning}, author = {Chang, J L and Kelley, J H}, abstractNote = {Selective placement of overburden is one of the measures that can mitigate surface coal mining's impact on environment which is mandatory by the Public Law PL 95-87 of 1977.

Impact of Surface Miner Utilisation on Production Efficiency …

Presently coal accounts for 51.65% of India's energy requirement [].Nevertheless, countrywide demand for coal far exceeds its countrywide supply, despite its natural abundance, due to failure to achieve high production targets in the Indian coal mining industry, especially in opencast mines, which are responsible for 94.98% of total …

Problems of selective coal mining in the Kolubara coal …

Total coal reserves of the Kolubara mine were considered from the standpoint of selective coal mining using bucket wheel excavators and bucket chain excavators. Waste intercalations and mineable coal reservers were considered supposing various yield coefficients and optimum excavating technology. It was concluded that coal slices less …

Selective coal mine overburden treatment with topsoil and …

Overburden at a coal mine in the Hunter Valley, New South Wales, was stored in a flat-topped artificial mound with 14-degree side slopes. Topsoil was scarce, dispersive and readily eroded. A split-plot factorial experiment applied an enhanced municipal solid waste compost at 0, 60 or 100 t ha −1 to untreated overburden or to …

[PDF] Research and practice of intelligent coal mine …

International Journal of Coal Science & Technology. TLDR. The role of coal as China's basic energy source is considered and the development of the coal industry is examined, and the intelligent development of coal mines is focused on, with the "Chinese mode" of intelligent mining in underground coal mines introduced. Expand.

Classification of selective mining operation

Considering the separation accuracy (SA) and the separation thickness (ST) three areas of selective operation (a combination of ripper loader and dozer) can be distinguished, which are...

Equipment Selection for High Selective Excavation Surface Coal Mining

It was also found that high selective excavation could provide the desired coal quality at 52% lower costs when the whole process (excavation, transportation, processing, etc.) was considered ...

Developing selective mining capability for longwall …

Longwall coal mining is a full extraction underground mining method that involves the removal of coal in large blocks or panels using a mechanised shearer. ... An selective mining solution was described to aid the development of automated horizon control strategies for longwall operations. A system consisting of a thermal infrared …

(PDF) Research into the coal quality with a new …

Research into the coal quality with a new selective mining technology of the waste rock accumulation in the mined-out area. December 2022. DOI: …

Recovery of fine coal from waste streams by the selective flocculation

In the United States, a significant amount of fine, −150-μn (−100-mesh) coal is rejected because of the unavailability of an economical recovery process. In the last decade, coal companies have realized the financial and environmental potential for recovering the fine clean coal from waste streams. Selective flocculation, which has …

Selective Electroplating Speeds Parts Repair

The selective plating process fits well within concepts of sustainability in the mining industry, given its far lower impact compared to other surface coating methods. Using less solution and chemicals, and …

Efficiency of selective coal seam mining by manipulators

@misc{etde_5851246, title = {Efficiency of selective coal seam mining by manipulators} author = {Ermekov, T E} abstractNote = {Analyzes the results of performance testing of the VMF turret-type cutter with a manipulator for selective mining of coal seams. Mathematical models of coal cutting are used. The VMF cutter motion is analyzed. Accuracy of cutter …

Erosion Management of Riparian Ecosystem in Coal Mining …

This coal mine discovered in 1985 by U.S. Geological Survey team and it is only one running coal basin out of total 5 coal basins in Bangladesh. It contributes a major part of the fuel for ...

Pillar Extraction | SpringerLink

Pillar extraction, (also referred to as retreat mining; pillar recovery; stooping; pillar robbing; and bord and pillar second workings) is the practice of forming a series of pillars and then partially or totally extracting some or all of the pillars, usually with mining operations retreating out of a panel. There are a number of basic pillar extraction …

Horizon control technology for selective mining in underground coal …

Methods of selective mining are, therefore, necessary to recover only the low sulphur coal. This paper examines the methods currently in use in mines and the alternative methods that are able or ...