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Influence mechanism of pre-oxidation on the secondary oxidation characteristics of coal: insights from TG-DSC-FTIR analysis [PDF]
Scientific ReportsThe secondary oxidation behavior of coal represents a critical process governing its spontaneous combustion propensity and pollutant emissions. To elucidate the influence mechanism of pre-oxidation on the secondary oxidation characteristics of coal, this
Shaoqiang Yun +4 more
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Effects of pre-oxidation temperature and air volume on oxidation thermogravimetric and functional group change of lignite. [PDF]
PLoS ONETo investigate the impact of the oxidation temperature and variations in airflow conditions on coal spontaneous combustion characteristics, pre-oxidized coal samples were prepared using a programmed temperature rise method.
Baoshan Jia +3 more
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Explosion Characteristics and variation of oxidized coal dust
Meikuang Anquan, 2023 Oxidized coal is a coal body that has undergone the process of warming up and cooling down, and has been widely used in mine fire area start-up, stratified mining, and re-mining of residual coal, etc.
HE Jie, CHENG Kai, ZHANG Jin
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Meikuang Anquan, 2022 In order to master the relationship between the key active groups of weathered coal and oxidized coal at the characteristic temperature of coal spontaneous combustion, this paper takes the fresh coal as the reference coal to compare and analyze the ...
ZHAO Jingyu +4 more
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矿业科学学报, 2022 In order to explore the low-temperature oxidation characteristics and evolution law of oxidized coal, this paper adopted a temperature-programmed experiment system.
Chen Rongfang +3 more
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Studies of the physico-chemical properties of humic simple superphosphate obtained on the basis of Central Kyzylkum phosphorites and oxidized coal [PDF]
E3S Web of Conferences, 2023 This article presents the results of the physical and chemical properties of humic simple superphosphate obtained by decomposition of the ordinary phosphorous flour of the Central Kyzylkum with sulfuric acid and the addition of oxidized coal from the ...
Ganiev Pirnazar +4 more
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Experimental study for the effect of pre-oxidization on functional groups of coal surface
Meikuang Anquan, 2021 In order to investigate the evolution law of the functional groups of pre-oxidized coal samples, lignite from Liujia and Sitai, bituminous coal from Tongxin and anthracite from Baijigou were pre-oxidized at 50 ℃, 120 ℃ and 200 ℃ for 6 h.
SUN Yong
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Effect of Pretreatment Methods on the Yield of Humic Acid in Oxidized Coal
Kuangchan zonghe liyong, 2023 This is an essay in the field of mineral processing engineering. During the mining and storage process of coal resources, a large amount of oxidized coal is formed, resulting in waste of coal resources and environmental pollution.
Jinfeng Si, Xingming Li
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Meikuang Anquan, 2023 In order to investigate the spontaneous combustion characteristics of secondary oxidation of residual coal in the mining area, the changes of microscopic and macroscopic parameters during the secondary oxidation of raw and oxidized coals were compared ...
LIANG Wenxu +4 more
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Exploring weathered and oxidized zones of coal seams using the transient electromagnetic method
Energy Exploration & Exploitation, 2022 Once a coal seam has been weathered and oxidized, the quality of the coal is lost and the coal resources are wasted. At the same time, new risks are introduced to the safe operation of the coal mine.
Yang Yang +5 more
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