Results 1 to 10 of about 1,406,898 (336)

Study on the Migration Pattern of Concentrated Brine in Underground Concentrated Brine Storage Reservoir: A Case Study in Ling Xin Mining Area

open access: yesGeofluids, 2022
The discharge of mine water from underground coal mines in arid areas is leading to extensive water loss and secondary pollution. To eliminate the water loss and environmental pollution, sealing the concentrated brine after the mine water treatment in ...
Xiaolong Hu   +7 more
doaj   +1 more source

Research on Three-Phase Saturation Distribution Based on Microfluidic Visualization Experiment: A Case Study of Ling Xin Mining Area

open access: yesGeofluids, 2022
Flow characteristics and phase distribution of concentrated brine storage in mining area have been core factors linking to the leakage risk assessment and ecological evaluation.
Xiaolong Hu   +9 more
doaj   +1 more source

The implementation of modified pillar method in the excavation field 2 (OP-2) in the 'Osojno-jug' RL 'Lubnica' Mine [PDF]

open access: yesPodzemni Radovi, 2015
According to the present geologic conditions, designing the modified pillar method of excavation with felling roof coaland collapsing the roof is mandatory and that is one of the goals of this method. Considering the planned growth in production in OP-2,
Dubočanin Milan
doaj   +1 more source

Stability Analysis and Derived Control Measures for Rock Surrounding a Roadway in a Lower Coal Seam under Concentrated Stress of a Coal Pillar

open access: yesShock and Vibration, 2020
Numerical simulations have often been used in close-distance coal seam studies. However, numerical simulations can contain certain subjective and objective limitations, such as high randomness and excessively simplified models.
Zhuoyue Sun   +5 more
doaj   +1 more source

Porosity of coals and coal products [PDF]

open access: yes, 1978
Different experimental approaches for characterizing porosity of coals and coal products have been described. Results of densities, surface areas and pore volume distributions for coals of different rank and the manner in which they change upon heat treatment have been discussed.
Mahajan, O. P., Walker, Jr., P. L.
openaire   +3 more sources

Surface chemical properties and pore structure of the activated coke and their effects on the denitrification activity of selective catalytic reduction

open access: yesInternational Journal of Coal Science & Technology, 2019
In order to study the mechanism of selective catalytic reduction of activated coke to remove NO in low-temperature flue gas and provide some theoretical basis for the development of related technologies.
Wei Xie   +4 more
doaj   +1 more source

THE DETERIORATION OF COAL. [PDF]

open access: yesJournal of the American Chemical Society, 1908
n ...
Parr, S. W., Wheeler, W. F.
openaire   +2 more sources

ESTIMATION OF MOISTURE CONTENT IN COAL IN COAL MILLS [PDF]

open access: yesIFAC Proceedings Volumes, 2006
For coal-fired power plants information of the moisture content in the coal is important to determine and control the dynamical behavior of the power plants. E.g. a high moisture content in the coal can result in a decreased maximum load gradient of the plant. In this paper a method for estimating the moisture content of the coal is proposed based on a
Odgaard, Peter Fogh, Mataji, B.
openaire   +4 more sources

Study on the Dephenolization of wastewater of coal chemical industry

open access: yesProceedings of the Mongolian Academy of Sciences, 2020
Coal chemical wastewater contains large number of phenolic substances, which cause great harm to the environment. The dephenolization of wastewater from coal chemical enterprises was investigated.
Jiahua Xie   +3 more
doaj   +1 more source

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