Journal ArticleDOI
Distribution of inorganic and organic substances in the hydrocyclone separated Slovak sub-bituminous coal
Anton Zubrik,Slavomír Hredzák,Ľudmila Turčániová,Michal Lovás,Ingo Bergmann,Klaus-Dieter Becker,Mária Lukčová,Vladimir Šepelák,Vladimir Šepelák +8 more
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TLDR
A low-rank Slovak sub-bituminous coal from the Handlova deposit was physically treated by washing in a water-only cyclone with the goal to find the separation effect for inorganic (mainly Fe-bearing minerals) and organic substances (humic acids, diterpanes).About:
This article is published in Fuel.The article was published on 2010-08-01. It has received 25 citations till now. The article focuses on the topics: Sub-bituminous coal & Coal.read more
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Recent advances in beneficiation for low rank coals
TL;DR: In this paper, a review of coal beneficiation technologies for low-rank coal is presented, including physical (gravity and magnetic separation), chemical (leaching), physico-chemical (flotation and oil agglomeration), and bio-beneficiation technologies.
Journal ArticleDOI
Exploring effect of water immersion on the structure and low-temperature oxidation of coal: A case study of Shendong long flame coal, China
TL;DR: In this paper, the effect of water immersion on the structure and low-temperature oxidation of coal, the untreated coal and soaked coal for 90 and 180 days were prepared and compared, and the surface morphology, pore structure, physical oxygen absorption and free radical parameters were characterized by scanning electron microscope (SEM), N2 adsorption, chromatography oxygen absorption, and electron spin resonance spectrometer (ESR).
Journal ArticleDOI
Hydrocyclone as a cleaning device for anaerobic sludge digesters in a wastewater treatment plant
TL;DR: In this paper, the use of the hydrocyclone technology as an alternative for desludging was described, and the coarse fraction recovered before the hydrocycle plant contained potentially biodegradable matter that could be used as soil amendment, with low concentrations of heavy metals.
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Study on the oxidation thermal kinetics of the spontaneous combustion characteristics of water-immersed coal
TL;DR: In this paper, the authors compared five different kinetic analysis methods and found that the Kissinger-Akahira-Sunose (KAS) method is more accurate and is highly recommended.
Journal ArticleDOI
Erosion effect on microstructure change and oxidation behavior of long-flame coal under different pH conditions
TL;DR: In this article, coal samples were eroded in aqueous solution of various pH values (4, 5, 7 and 8) for 30 days and the pore structure and functional groups were characterized by low-temperature N2 adsorption and Fourier transform infrared spectroscopy.
References
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Journal ArticleDOI
Analysis and significance of mineral matter in coal seams
TL;DR: A range of technologies, including but not restricted to low-temperature oxygen-plasma ashing, may be used to evaluate the total proportions of minerals and other inorganic constituents in a coal sample as mentioned in this paper.
Journal ArticleDOI
Overview of analytical methods for inorganic constituents in coal
TL;DR: In this article, analytical methods for inorganics in coal are reviewed on three fronts: (i) elemental concentrations, (ii) methods for determining the mineralogy of coals, and (iii) method for determining modes of occurrence (speciation) of trace elements in coal.
Journal ArticleDOI
Occurrence, abundance and origin of minerals in coals and coal ashes
TL;DR: The mineralogy of coal and coal ash samples from a wide variety of deposits worldwide has been studied by X-ray diffractometry, light microscopy, SEM, TEM, and DTA-TGA methods as mentioned in this paper.
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