The chemical composition of coal gangue and other mature admixtures such as slag and fly ash were analyzed by XRF Table 2illustrates the results The three admixtures are similar in chemical composition and have more silicon and aluminum oxides; thus coal gangue has potential activity which is worthy of excitation and research
Get PriceCoal gangue is a solid waste discharged during coal mining which not only occupies large land resources but also brings about certain risks to the environment The alumina and silica minerals in coal gangue are the major resources and difficult to separate from each other which hinders the resource utilization of coal gangue The catalytic effect of various additives on the phase
Get PriceDownload scientific diagram Design and Initial Water Quality Parameters of the Coal Gangue Immersion Tests under Different Immersion Solutions from publication Effects of Coal Gangue on the
Get PriceThe future of the energy industry will involve traditional chemical engineering areas like transport phenomena and process design and advanced computational capabilities and bio catalysts and improved sensors and analytics he believes Now and in the future cost effective renewable energy sources affect processes and business
Get PriceSamples were selected from 28 mines in 10 provinces to analyze the coal gangue characteristic in order to research the feasibility on the coal gangue generation of clay to product cement Results show that the coal gangue has high ash high sulfur content and low heat value The chemical composition is the same to the clay The coal gangue includes the rich trace element and the mineral
Get PriceThe thermal behavior of coal gangue selected from Zhungeer Inner Mongolia Autonomous Region of China was investigated by X ray diffraction XRD Fourier transform infrared FT IR spectroscopy thermogravimetry TG derivative thermogravimetry DTG and scanning electron microscope SEM
Get Price4 1 Design and implementation of coal gangue detection and recognition device This study proposes an method for coal gangue detection and recognition on the basis of the DCN YOLOv3 algorithm Firstly the method collects real time video images of a conveyor belt operation through an industrial camera erected perpendicular to the conveyor belt
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Get Pricethe main research objectives of this study are as follows 1 to analyze the identification ability of multispectral spectral analysis combined with 1d cnn for coal and gangue; 2 compare the recognition effect of 1d cnn with different structures to select the best structure; 3 reasonably set the optimizer activation function and network depth …
Get PriceDOI 10 1016/j fuel 2024 125927 Corpus ID 252252359; Thermal behavior and chemical reactivity of coal gangue during pyrolysis and combustion article{ShaoThermalBA title={Thermal behavior and chemical reactivity of coal gangue during pyrolysis and combustion} author={Shuang Shao and Bao zhong Ma and Cheng Yan Wang and Yong qiang Chen} journal={Fuel} }
Get PriceThere are large areas of spontaneous coal combustion in northern and northwestern China The quantification of greenhouse gas GHG emissions resulting from spontaneous coal combustion is an important step toward determining proper management practices to reduce such emissions in the future The present study investigated the GHG emission characteristics of the spontaneous combustion of 10
Get PriceSome of the Common Tests conducted on Coal include Calorific value Gross/net Proximate analysis Moisture Volatile matter Ash and Fixed Carbon Ultimate analysis C H O N S and Ash Ash analysis Al2O3 SiO2 CaO MgO TiO2 Na2O K2O S etc Ash Fusion Temperature Coke Reactivity Hard grove Grindability Index Porosity Density
Get PriceThe chemical states of silicon and aluminum in coal gangue was studied by X ray photoelectron spectroscopy XPS The XPS analysis was carried out by Imaging Photoelectron Spectrometer AXIS Ultra Kratos Analytical with monochromatic Al Kα radiation 225 W 15 mA 15 kV and low energy electron flooding for charge compensation
Get PriceThe RSD and AE were within the range of 10% and 2% respectively when the organic matter content is <30 wt% Based on this an approximate method for the Rietveld quantitative analysis of crystalline minerals in coal gangue was established Keywords coal gangue organic matter crystalline minerals X ray diffraction Rietveld method Type
Get PriceThe content of bound to organic in Cr Cu and Hg was higher which were 13 67mg kg 1 12 52mg kg 1 10 18mg kg 1 respectively Thirdly the activity coefficient and migration coefficient of Cu in the soil in the study area were relatively large It showed strong bioavailability and posed the greatest potential harm to the environment
Get PriceAbstract With coal gangue and high alumina refractory solid wastes as raw materials needle like mullite powder with an average diameter of about 1 μm was synthesized at 1300°C by using the conventional solid state reaction method Mullite ceramics were derived from the inexpensive needle like powder
Get PriceThe ultimate analysis of the coal and the proximate analysis results based on moisture is given in Table 2 with the ash of 22 52 % fixed carbon of 40 54 % and sulfur content of 0 306 % the quality of the coal is better than the flotation feed in the actual coal preparation plant but not quite as good as the clean coal
Get PriceThe coal crusher can crush coal and gangue from 1500 mm into 5 mm and crush materials with cutting type which makes the discharging process smooth 5 Common Faults Analysis of Coal Hammer Crusher Hammer crushers for sale/Get price Coal Crusher According to the working principle coal crusher can be divided into two types hammer
Get PriceThe coal gangue was produced by the Tangshan mining area was tested for non spontaneous combustion The coal gangue powder was calcined in a muff furnace at a constant temperature of 700 °C for 2 h The main chemical compositions of precursors were analyzed by X ray fluorescence spectrometry XRF Table 1 The median sizes d 50 of the coal
Get PriceThe chemical analysis of the ARCG is shown in table 1 As seen from the table 1 the ARCG is composed chiefly of Al 2 O 3 SiO 2 Fe 2 O 3 CaO and TiO 2 and the content of alumina and silica are 44 93% and 54 13% respectively
Get PriceAbstract For comprehensive utilization of solid waste coal gangue slag of CFB and washed fly ash provided by a coal mine were evaluated on their potential as calcined kaolin Studies on these samples include the determination of chemical composition by ICP the analysis of mineralogical construction by XRD orthogonal experiments of iron leaching by acids and decarburization by calcination
Get Price2024 12 15 The main chemical composition of coal gangue was analyzed by X ray fluorescence spectrometry XRF Table 1 The coal gangue is composed of SiO 2 Al 2 O 3 iron calcium and magnesium oxide THE THERMAL TRANSMISSION BEHAVIOR ANALYSIS OF 2024 4 24 The main chemical components of coal gangue are SiO 2 Al 2 O 3 and carbon in
Get PriceAlthough the chemical composition of CG is complex CG is mainly composed of silicon and aluminum and contains more than a dozen elements Generally CG is mainly composed of oxides such as SiO 2 Al 2 O 3 Fe 2 O 3 CaO MgO NaO and K 2 O 20 22 Calcined CG is an effective method for improving the aggregate properties
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Get PriceAfter the closure of the coal mine the karst water in the goaf area and the waste gangue had a geochemical reaction and the above mentioned water rock process was simulated by an indoor static immersion experiment to explore the differences in the effect of different types of karst water on the dissolution of gangue The… Expand
Get PriceChemical Research in Toxicology 2024 34 9 2145 2156 Efficient Analysis of Non Polar Environmental Contaminants by MALDI TOF MS with Graphene as Matrix PAHs in an Area Contaminated by Coal Gangue Dump Emphasis on Concentration Profile Source and Carcinogenic Risk Sustainability 2024 14 21
Get PriceA 20% proportion of polyvinyl chloride showed the most significant promotion of co combustion with a maximum coupling coefficient of 0 00318 which was 1 11 and 1 35 times greater than that of 50% and 80% proportions respectively Co combustion can reduce the activation energy of coal gangue during the initial and end stages
Get PriceGroup II includes the iron ores containing 4 7% of gangue materials and 60 65% of Fe These correlate to the medium grade ores Finally Group III has higher contents of gangue materials >7% and between 50 63% of Fe Most of these ores correspond to low grade ores Figure 1
Get PriceCoal gangue is a gray solid waste produced in the process of coal excavation and production Coal gangue is associated with coal in the process of coal carbon formation Coal gangue produced in the process of coal mining accounts for about 10% ∼ 25% of the total [ 1 ]
Get PriceThe chemical composition of the coal gangue is SiO 2 34 58 mass%; Al 2 O 3 31 95 mass%; Fe 2 O 3 1 00 mass%; TiO 2 0 76 mass%; CaO 0 3 mass%; Na 2 O 0 42 mass%; and K 2 O 0 02 mass% The molar ratio of SiO 2 /Al 2 O 3 with 1 83 is less than the theoretical value of kaolinite
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