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·Under the condition of room temperature of 23 °C the oxide composition of coal gangue was analyzed using the ZSX primus II X ray fluorescence spectrometer of Nippon Institute of Science
·In the current study the coal gangue was modified by environmentally friendly ball milling chemical modification method and used for simultaneous adsorption heavy metal and ammonia in wastewater Both the initial and modified coal gangue were characterized for structure and composition Optimization of ball milling conditions and adsorption
·D Belkheiri et al analyzed different granulometries of the coal gangue of Jerada and identified an average composition of the gangue in oxides SiO 2 % Al 2 O 3 % as shown in Table 1 [5] Due to its high content of aluminosilicate minerals coal gangue can be effectively used as a raw material for the formation of geopolymer [6
·X ray diffraction XRD tests reveal that the main mineral composition of the coal gangue from the selected four regions in Shanxi Province is quartz followed by clay minerals Aluminum oxide in coal gangue exists in the form of clay minerals while silicon dioxide primarily exists in the form of quartz and iron oxide partially exists in the
DOI / Corpus ID 93714613; Transformation behavior of mineral composition and trace elements during coal gangue combustion article{Zhou2012TransformationBO title={Transformation behavior of mineral composition and trace elements during coal gangue combustion} author={Chuncai Zhou and Guijian Liu and
·Coal gangue CG which accounts for about 10 20 % of coal output is a kind of solid waste generated during the coal mining and washing processes According to Fig 2 the annual output of CG in China fluctuates between 600 800 million tons with a utilization rate hovering around 70 %
·The mineral composition of coal gangue from different mining areas formed in different sedimentary environments determined its chemical elemental concentration characteristics The Nanyangpo samples exhibited high SiO 2 53 68% and low Fe 2 O 3 contents % which attributed to the enrichment of quartz and rare pyrite Table 2
·The chemical composition of coal gangue is listed in Table 2 and its main components are % SiO 2 % Al 2 O 3 and % Loss on ignition LOI Additionally other components such as TiO 2 SO 3 Fe 2 O 3 K 2 O and CaO are also detected
·The thermal behavior of two mineral type coal gangues under different temperature conditions was investigated by heating treatment of kaolinite type coal gangue and illite type coal gangue based on thermal analysis X ray diffraction XRD infrared spectroscopy IR and scanning electron microscopy SEM Thermogravimetric differential
·During the extraction and processing of coal a large amount of solid waste collectively known as gangue is produced This gangue has a low carbon content but a high ash content accounting for approximately 15 to 20% of the total coal yield Before coal is used coal and gangue must be effectively separated to reduce the gangue content in the raw coal and
·Rapid Analysis of Composition of Coal Gangue Based on Deep Learning and Thermal Infrared Spectroscopy Liang Song 1 Ying Yu 1 Zelin Yan 2 Dong Xiao 2 Yongqi Sun 1 Xuanxuan Zhang 3 Xingkai Li 3
·The design of the material composition distribution ratio of coal gangue/bottom ash geopolymer double liquid grouting material is shown in Table 2 Among them in order to make the grouting material have greater liquidity to ensure its injectability while ensuring its later strength adding polycarboxylate superplasticizer accounted for 2% of
·In the composition of coal gangue SiO 2 is the main component followed by Al 2 O 3 The content of SiO 2 Al 2 O 3 and S in the weathered coal gangue was lower than that in the fresh coal gangue while the content of P was slightly higher Chemical elements contain a small amount of Mn Cu Zn Ti Ba Cl and other elements among which the
·Although the calcination based activation of coal gangue is important for its valorization in the form of cementitious materials the related works mainly focus on high quality coal gangue neglecting its low quality counterpart To bridge this gap we herein conducted the pilot scale suspension calcination of low quality coal gangue; explored the effects of
·Coal gangue used in this study was obtained from JingYang Coal Washing Plant which is located in Baotou City of China The mineralogical phase was characterized by XRD as shown in Fig indicates kaolinite Al 2 O 3 ·2SiO 2 ·2H 2 O and quartz SiO 2 are the major crystallized minerals presented in the raw coal chemical composition and
13 ·The large scale open air storage of coal gangue often leads to oxidation and decomposition due to natural weathering resulting in decreased strength and instability which limits its wider application in concrete pavement To address these issues this paper proposed a composite consolidation treatment for weathered coal gangue WCG assessing its
Download scientific diagram Chemical composition and mineral composition of different types of coal gangue from publication Using Chinese Coal Gangue as an Ecological Aggregate and Its
·The chemical composition of coal gangue varies across regions which may affect the generalizability of the findings Additionally the long term performance and durability of the materials under different environmental conditions were not extensively studied Future research should explore the use of coal gangue from various sources conduct
·Coal gangue is a kind of industrial solid waste with serious ecological and environmental implications Producing concrete with coal gangue aggregate is one of the green sustainable development requirements This paper reviews the properties and preparation methods of Chinese gangue aggregate studies the influence of gangue aggregate on
·To address the technical limitations of automatic coal and gangue detection technology in fully mechanized top coal caving mining operations the low radiation level radioactivity measurement
3 ·Using coal gangue as subgrade filler CGSF can address the accumulated issues of coal mine waste but also save the constructing costs which has the important ecological and engineering
·A large amount of coal gangue buildup may be a potential fire hazard associated with the heat released by microorganisms accumulating to the point of spontaneous combustion in the presence of unburned coal pyrite FeS 2 and gangue is likely to cause large scale fire and blast disasters and produce a significant amount of toxic emissions
