WEBAug 27, 2023 · The interaction between kaolinite and saline water in affecting the microstructure, rheology and settling of coal flotation products. Powder Technol. 2020, 372, 76–83. [Google Scholar] Zhang, N.; Chen, X.; Nicholson, T.; Peng, Y. The effect of saline water on the settling of coal slurry and coal froth. Powder Technol. 2019, 344, 161
WEBDec 1, 2022 · In order to compare the effect of glycerol in improving the water retention capacity of coal seams and eliminate the influence of porosity differences on the water retention rate, a material similar to Yangquan lean coal was prepared by mixing coal powder, cement, sand and water at a ratio of 6:2:1:1.
WEBApr 8, 2021 · The effect of burner tilt was investigated by analyzing the effect on gas flow, temperature distribution, coal particle trajectories and NOx emissions. The results suggest that a downward tilt of the burner (− 15°) has a significant effect on the particle trajectories and the residence time of the particle in the high temperature burner zone.
WEBJan 1, 2022 · [Show full abstract] efficiency of the boiler declines slightly with the mixing ratio of biomass increasing, and the exhaust SO2 is much lower than expected. The cocombustion of biomass with coal ...
WEBApr 15, 2024 · 1. Introduction. In the world, the main energy source to support economic development is coal [1].Currently, the country with the largest coal reserves is China, with more than half being in the form of lowrank coal (LRC) [2], producing large quantities of LRC slurry, due to its high moisture, high ash, low calorific value, and other attributes.. .
WEBMay 5, 2023 · Also, the oil–water interfacial tension and viscosity of oil droplets decrease as the temperature rises, while the diffusion ability increases. These increase the volume of oil droplets that penetrate into the pores, resulting in poor spreadability of oil droplets on the coal surface.
WEBJan 1, 2018 · Chemical compositions of the coal ash, pellet powder and mixed powders are listed in Table powder has a low content of CaO (%) while a high content of SiO 2 (%), indiing the pellet is a kind of acid pellet, a common pellet in China. The contents of SiO 2 and Al 2 O 3 are both increased with the addition of coal ash. For the .
WEBApr 1, 2023 · The amount of kerosene adsorbed in the concentrates was analyzed by FTIR measurements. The results showed that oilinwater with g Span 80 had the largest concentrate yield and combustible recovery, while waterinoil had had larger ash content, flotation rate constant, and recovered water.
WEBThis work aimed to experimentally compare the effects of blended fuels (C2H6, C2H4, CO, and H2 mix in different proportions) on the explosion pressure behavior of methane and blended fuels in air.
WEBApr 3, 2020 · Coal–water slurry or coal–water mixture (CWS or CWM) is a complex solid–liquid dispersion. Several research works have been done concerning the production and use of CWSs being developed worldwide in several different governmental, industrial and academic facilities. In the present paper, studies on the developments achieved in .
WEBThe statedependent properties of coal mining wastes (, water retention, hydraulic conductivity, shear strength) are found to be governed by complex factors such as coal content, particle size ...
WEBJan 1, 2024 · Coal seam water injection is vital in mitigating dust pollution in coal mining operations. To investigate water imbibition and adsorption behavior on the coal surface following injection into coal seams, as well as the impact of surfactants, coal particles with sizes of 6–8 mm, 3–5 mm, and – mm were selected from the Dongtan Coal Mine .
WEBSep 15, 2014 · Based on the obtained results in comparison to the reference mix ( a mix containing limestone powder) the coal waste and its ash resulted in higher stability and resilient modulus. Furthermore, the combination of coal waste and limestone powders in equal proportion resulted in a desirable mix with high water resistance.
WEBJan 1, 1984 · Dry screened coal eras found to have become more hydrophobic due to aging. Ovendrying af fects the surface tension of only the dry screened samples of ail coals. INTRODUCTION Beneficiation and utilization of coal powders involves processes such as froth flotation and mixing the coal powders with oil or water.
WEBJan 1, 2022 · 1. Introduction. In China, lowrank coal (LRC) is an important part of thermal coal and coal for the coal chemical industry. With the improvement of coal mining and coal preparation mechanization, LRC is prone to produce a large amount of slime in coal mining and processing due to its porous and fragile characteristics [[1], [2], [3]].These fine .
WEBFeb 15, 2024 · The compressive strength test sample is consisted of cement, CGS, coal gangue, activators and water, among which the ratio of cement, CGS, coal gangue and water was 1:7:2:, and the ratio of coarse, medium and fine coal gangue was 1:1:3 [21]. The prepared slurry was poured into the cylindrical molds with a size of 50*100 mm, .
WEBNov 2, 2021 · The particle sizes of the two types of MDS are smaller than those of the dust and sludge from the common iron and steel metallurgical process. 45 This indies that SFD and WOS are more conducive to mixing with coal and there are more contact points after mixing with pulverized coal, which is beneficial for improving the alytic effect.
WEBOct 1, 2021 · According to molecular depolymerization theory, rapid preheating relaxes the macromolecular structure of coal, thereby enhancing its fluidity during thermoplastic stage. After preheating coking coal, the cold and hot strengths of coke are commonly improved. In this review, the shortcomings and future research scope of the rapid preheating are ...
WEBSep 15, 2014 · The main objective of this research was to investigate the effect of coal waste powder as filler material in hot mix asphalt. After sampling the coal waste material from a coal washing plant, it was processed to achieve natural coal waste filler. Furthermore, after incinerating the natural coal waste powder at 750 °C, the coal waste .
WEBApr 1, 2021 · 1. Introduction. Coal is the second largest fuel in the energy mix with a share of 27% in global consumption and still remains the dominant fuel for power generation accounting to 38% at the global level in 2018, and these values were far higher in the Asia Pacific region [1].However, the coal usage has resulted in environmental problems such .
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