Results 11 to 20 of about 7,783 (291)
Effect of Secondary Oxidation of Pre-Oxidized Coal on Early Warning Value for Spontaneous Combustion of Coal [PDF]
Applied Sciences, 2023 The indicative ability of a gas indicator for the spontaneous combustion of coal is affected by the secondary oxidation of oxidized coal, from old goafs, entering a new goaf through air leakages.
Chaowei Guo +4 more
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Effect of Pre-oxidation on Coal Specific Surface Area and Pore Size Distribution
Meikuang Anquan, 2020 In order to explore the micro structure variation features of coal after pre-oxidation, the liquid nitrogen adsorption experiment was adopted to measure the specific surface area and pore structure of Liujia lignite, Sitai lignite, Tongxin bituminous ...
SUN Yong
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Thermal effect and kinetic analysis of secondary spontaneous combustion of pre-oxidized coal
Meikuang Anquan, 2022 In order to study the secondary spontaneous combustion of coal treated with different pre-oxidation temperatures, pre-oxidized coals with different temperatures were prepared by temperature programmed device.
ZHANG Wenhao, YU Tao
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Meikuang Anquan, 2020 To study the effect of pre-oxidation on the limit parameters of coal spontaneous combustion, the primary oxidation and secondary oxidation processes of coal are simulated by the program heating device, the oxygen consumption rate, gas productivity ...
WANG Kai, HE Yunzhong, SHANG Bo
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ELECTROKINETICS OF OXIDIZED COAL
Fuel Processing Technology, 1990 Electrokinetic measurements were carried out in order to determine the properties of oxidized coal surfaces over a wide pH range both in the presence and absence of various metal ions and flotation collectors.
OZBAYOGLU, G, SARIKAYA, M
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Meikuang Anquan, 2022 Deep mining in Shaanxi and Inner Mongolia mining areas is characterized by high mine pressure and high degree of broken coal. Leaving narrow coal pillars is easy to cause side air leakage along goaf, and the coal left in the adjacent gob will undergo ...
WU Jianbin +5 more
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Study on spontaneous combustion characteristics of oxidized coal in re-mining coal seam
Meikuang Anquan, 2021 According to the current situation of spontaneous combustion of coal in the re-mining coal seam, the differences of spontaneous combustion characteristics of oxidized coal in Jinggezhuang Mine with four different re-mining times are analyzed.
ZHANG Yanfang, WANG Fusheng, WANG Jiantao
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Reverse flotation of taixi oxidized coal
Energy & Fuels, 2013 X-ray photoelectron spectroscopy (XPS) was used to indicate the chemical properties of Taixi oxidized coal. The results of XPS analysis showed that Taixi oxidized coal contained many oxygen functional groups.
Yang, Jianguo, Xia, Wencheng
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Mechanism of Biodegradation and Methane Production from Low-temperature Oxidized Coal
Taiyuan Ligong Daxue xuebao[Purposes] The goaf, as the primary residual space following coal mining, boasts a vast and expansive internal space and a rich residual coal resources. This makes it an important potential site for implementing coal-bed methane bioengineering.
GAO Longzhen +4 more
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Flotation and flocculation chemistry of coal and oxidized coals [PDF]
, 1990 The objective of this research project is to understand the fundamentals involved in the flotation and flocculation of coal and oxidized coals and elucidate mechanisms by which surface interactions between coal and various reagents enhance coal ...
Somasundaran, P.
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