MTW European Type Trapezium Mill
Input size:30-50mm
Capacity: 3-50t/h
LM Vertical Roller Mill
Input size:38-65mm
Capacity: 13-70t/h
Raymond Mill
Input size:20-30mm
Capacity: 0.8-9.5t/h
Sand powder vertical mill
Input size:30-55mm
Capacity: 30-900t/h
LUM series superfine vertical roller grinding mill
Input size:10-20mm
Capacity: 5-18t/h
MW Micro Powder Mill
Input size:≤20mm
Capacity: 0.5-12t/h
LM Vertical Slag Mill
Input size:38-65mm
Capacity: 7-100t/h
LM Vertical Coal Mill
Input size:≤50mm
Capacity: 5-100t/h
TGM Trapezium Mill
Input size:25-40mm
Capacity: 3-36t/h
MB5X Pendulum Roller Grinding Mill
Input size:25-55mm
Capacity: 4-100t/h
Straight-Through Centrifugal Mill
Input size:30-40mm
Capacity: 15-45t/h
Methods for testing various physical properties of coal gangue
Experimental study of thermophysical properties of coal gangue at
2020年12月5日 In this paper, the thermophysical properties of CG were investigated by transient plane source method The correlations and sensitivity analysis were performed to characterize 2020年2月5日 Physical properties assist in classifying coal gangue for geotechnical engineering applications The physical properties considered are specific gravity, grain size distribution, Characterization studies on coal gangue for sustainable geotechnics2023年12月8日 Before coal is used, coal and gangue must be effectively separated to reduce the gangue content in the raw coal and improve the efficiency of coal utilization This study introduces a classification method for Coal and Gangue Classification Based on Laser 2024年9月7日 This paper provided a comprehensive review of various modification methods (including mechanical, chemical, microbiological, thermal, hydrothermal and composite Opportunities, challenges and modification methods of coal
Effect of Physical and Chemical Properties of Coal Gangue Under
2020年4月30日 The Xray diffraction (XRD) test, water absorption test, apparent density test, crushing index test of aggregates and the compressive strength test of concretes were 2024年2月28日 In this paper, through laboratory tests and numerical simulations, the bearing characteristics and deformation damage of gangue are deeply investigated and analyzed from Study on the macro–micro evolution of compaction Nature2022年4月6日 The physical, chemical, mineralogical, geotechnical, environmental (trace metal mobilization and lifecycle assessment) characteristics of CG are comprehensively evaluated The Sustainable Utilization of Coal Gangue in Geotechnical and 2023年12月15日 Subsequently, microscopic analysis techniques such as TGDTG, XRD, and SEMEDS are employed to determine the mineral structure and chemical composition of coal The influence of carbon imperfections on the physicochemical
Effect of coal gangue grading characteristics on cemented paste
Studies in the field of concrete [6], [7], [8], the characteristics of various aggregates, such as size, content, grading, and shape, have a distinct impact on the rheological properties of concreteGeiker et al [9] and colleagues have revealed that an increase in the volume fraction of coarse aggregate leads to a substantial rise in yield stress and viscosity of concrete2024年9月1日 Traditional sorting methods mainly use the physical properties of gangue for sorting They lack recognition and data processing, which limits advancements in accuracy and automation In contrast, underground intelligent coal gangue sorting is based on accurate detection of physical or chemical properties using smart sensorsResearch and prospect of underground intelligent coal gangue 2019年12月1日 The accumulation of considerable coal gangue not only occupies a great deal of land resource, but also results in serious environmental problems, eg, soil pollution, air pollution, and geologic hazards (Stracher and Taylor, 2004)The heat continues to accumulate during the accumulation process, which leads to spontaneous combustion with the oxidization of coal Comprehensive utilization and environmental risks of coal gangue: A According to the Technical Regulations for the Application of Foam Concrete (JGJ /T341–2014), the compressive strength of foam concrete with 300 density grade is about 03–07 MPaZhang et al [15] analyzed the effects of CG levels, waterbinder ratios, fly ash levels on the physicalmechanical properties and pore structure of coal gangue foam concrete (CGFC)Preparation of coal gangue foam concrete modified by
Microstructure, Characterization and Mechanical Properties of Coal
2023年2月25日 Among them, five papers focus on the damage evolution and failure characteristics of coal and coallike materials under different conditions Four papers have studied the physical and chemical properties of new rock mass materials (coal gangue, coal tar pitch, freeze–thaw sandstone and anchored bedding rock mass)2020年2月20日 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 oxygenCoal gangue is likely to cause largescale fire and blast disasters, and produce a significant amount of toxic emissions Reactivity activation of waste coal gangue and its impact on the 2024年3月14日 With the continual advancement of coal resource development, the comprehensive utilization of coal gangue as a byproduct encounters certain constraints A substantial amount of untreated coal gangue is openly stored, particularly acidic gangue exposed to rainfall The leaching effect of acidic solutions, containing heavy metal ions and other Environmental impact assessment of acidic coal gangue2024年1月1日 Moreover, tests on the thermal properties of coal gangue concrete between room temperature and 800 °C were conducted The formulae for estimating the hightemperature residual strength and thermal properties of coal gangue concrete are provided in the study based on the results of the experimental tests 2 Experimental program21 MaterialsEffect of temperature on thermal properties and residual strength
Mechanical properties and micro characterization of coal slime
2023年12月1日 DOI: 101016/jconbuildmat2023 Corpus ID: ; Mechanical properties and micro characterization of coal slime waterbased cementitious materialgangue filling: A novel method for cotreatment of mining wasteDownload scientific diagram Physical properties of coal gangue aggregate from different origins in China from publication: Application of Coal Gangue as a Coarse Aggregate in Green Concrete Physical properties of coal gangue aggregate from different 2021年1月25日 The coal gangue was crushed and sieved according to GB/T 146852011 [32] for the preparation of ordinary concrete The particle size of the sieved coal gangue coarse aggregates was in the range of 5 mm–35 mm The basic physical properties of natural gravel and coal gangue were tested as listed in Table 1Utilization of coal gangue as coarse aggregates in structural 2023年10月11日 Backfill mining can effectively alleviate the problems of surface collapse and ecological water pollution, in which the mechanical properties of backfill materials, including coal gangue and coal fly ash, have a decisive role in the effect of filling mining In this study, we analyze the permeability characteristics of coal gangue filler through a set of homemade Study on mechanical properties of coal gangue and fly ash
Experimental Study and Analytical Modeling on
2023年11月9日 To assess the freeze–thaw (FT) durability of coal gangue pervious concrete (CGPC) in different FT cycle media (water, 35 wt% NaCl solution), experimental studies on 36 groups of cube specimens and 6 groups 2022年11月25日 China’s total coal production in 2021 exceeded 413 billion tons, 52% of the world’s total Coal gangue, a solid waste of coal mining accounts for 15–20% of coal production, when directly discharged on the ground surface as waste heaps, it occupies large areas of land and cause environmental pollution This paper summarizes the existing gangue backfilling Underground Disposal of Coal Gangue Backfill in China MDPI2019年12月1日 This study aims to provide a highvalue and environmentally friendly method for the application of coalbased solid waste Modified fly ash/polyurethane (MFA/PU) and modified coal gangue powder Comprehensive utilization and environmental risks of coal gangue2024年6月8日 Highvalue comprehensive utilization of coal gangue solid waste, reducing synthesis cost and environmental hazards has become an important research direction for green development In this study, acid–alkali treated coal gangue was used as the silica source, and abundant cotton short staple in Xinjiang was used as the raw material of aerogel Preparation and adsorption properties of cotton linters and coalgangue
Progress in the utilization of coal gangue for soilification and the
2024年10月3日 22 Basic Properties of Coal Gangue The density of coal gangue generally ranges between 2028 g/cm³ Due to the breaking during mining and stacking, it exhibits a high porosity, facilitating the storage and transport of water and gases Coal gangue particles vary in size, from fine powders to large blocks, which directly2024年1月1日 From this study, it is found that using coal gangue alone as a precursor in geopolymer is good at improving the strength of black cotton soil but observed to be weak in durability Hence, an attempt is further made to synthesize a betterperforming geopolymer with a combination of GGBS and coal gangue, ie, effective in both strength and durability aspectsPerformance Evaluation of Coal GangueGGBS–Based 2022年9月15日 Coal gangue is one of the industrial solid wastes that may harm the human body through the ecosystem for a long time Using coal gangue in geopolymer preparation can effectively reduce cement output and meet the sustainability requirements In this paper, the physical and chemical characteristics, including the heavy metal content, of coal gangue from Activation Mechanism of Coal Gangue and Its Impact on the Properties 2019年2月25日 Cemented coal ganguefly ash backfill (CGFB), which is a mixture of coal gangue, fly ash, binder and water, is introduced and employed to fill underground minedout areas of coal mines Once placed, the CGFB mixtures should have favorable stability, which is closely relevant to the mechanical performance of the CGFBs The mechanical behavior of CGFB is Effect of Curing Temperature on Mechanical Performance and
Novel Methods for Separation of Gangue from Limestone and Coal
2016年2月26日 Ore sorting is a useful tool to remove gangue material from the ore and increase the quality of the ore The vast developments in the area of artificial intelligence allow fast processing of fullcolor digital images for the preferred investigations The associated gangue minerals from limestone and coal mines were identified using three different approaches All 2021年11月11日 Among the techniques for converting stacked coal gangue to reusable material, one of the most effective ways is to use coal gangue as a coarse aggregate in green concrete productions(PDF) Application of Coal Gangue as a Coarse 2021年2月21日 The physical properties of CG are presented in Table 1Based on gradation curve, coarse coal gangue is classified under poorly graded sand (SP) The shear strength parameters take paramount importance especially in the Utilization of Coal Gangue for Earthworks: Sustainability Perspective2020年3月3日 From the perspective of resource recovery and environmental protection, coal ganguefly ash cemented backfill coal mining has become an important direction for the green development of coal mines in recent years Analysis of the rheological parameters of backfill slurry is the basic principle to design a backfill pipeline system Coal ganguefly ash backfill slurry Experimental Study and Application of Rheological Properties of Coal
The Influence of CO2 Curing on the Properties of Coal Gangue
2024年6月27日 Coal gangue is a solid waste, which can cause serious pollution of the atmosphere and water sources due to its longterm accumulation In this article, the influence of CO2cured coal gangue on the slump flow, the mechanical strengths, the thermal conductivity coefficient, the chloride ion permeability, the water resistance coefficient and the leached Pb of 2023年2月27日 Preparation of CCGB involves cost control, environmental protection, and waste recycling Coal gangue was set as the aggregate, and fly ash was combined with a minimal amount of cement to form the cementitious material [4]CCGB is similar to coal gangue concrete, but its fly ash content is much higher than that of cement (usually around 2–4 times)Influence of the use of corn straw fibers to connect the interfacial 2024年3月8日 Coal gangue can satisfy the basic requirements for road engineering materials after being compacted or stabilized, which offers certain potential in road construction and rehabilitation [9, 10]The cinder gravel in Ethiopia can meet the requirements of smallvolume road specifications after testing the geochemistry and strength characteristics (California Bearing Study of Road Performance and Curing Mechanism of Coal Gangue 2023年12月15日 In order to promote the development of coal gangue aggregate concrete and the resource utilization of coal gangue solid waste, the coal gangue samples were crushed into aggregates, and then the macroscopic characteristics and microscopic structures of the aggregates were characterized through methods such as calcination, sulfuric acid solution dry The influence of carbon imperfections on the physicochemical
A review of coal gangue identification research—application to
2022年12月26日 Top coal caving is a process for the rational extraction of large amounts of coal resources However, this process readily causes release of excessive amounts of gangue during the coal release process The conventional technique, which involves visual inspection, is not only laborintensive but also can introduce inaccuracies Coal and gangue identification methods 2024年8月28日 In this study, a novel backfill material called lean cemented gangue backfill material (LCGBM) is introduced, and various experiments, including uniaxial compression tests, creep tests, CTSEM Deposition morphology and mechanical properties of lean cemented gangue Studies in the field of concrete [6], [7], [8], the characteristics of various aggregates, such as size, content, grading, and shape, have a distinct impact on the rheological properties of concreteGeiker et al [9] and colleagues have revealed that an increase in the volume fraction of coarse aggregate leads to a substantial rise in yield stress and viscosity of concreteEffect of coal gangue grading characteristics on cemented paste 2024年9月1日 Traditional sorting methods mainly use the physical properties of gangue for sorting They lack recognition and data processing, which limits advancements in accuracy and automation In contrast, underground intelligent coal gangue sorting is based on accurate detection of physical or chemical properties using smart sensorsResearch and prospect of underground intelligent coal gangue
Comprehensive utilization and environmental risks of coal gangue: A
2019年12月1日 The accumulation of considerable coal gangue not only occupies a great deal of land resource, but also results in serious environmental problems, eg, soil pollution, air pollution, and geologic hazards (Stracher and Taylor, 2004)The heat continues to accumulate during the accumulation process, which leads to spontaneous combustion with the oxidization of coal According to the Technical Regulations for the Application of Foam Concrete (JGJ /T341–2014), the compressive strength of foam concrete with 300 density grade is about 03–07 MPaZhang et al [15] analyzed the effects of CG levels, waterbinder ratios, fly ash levels on the physicalmechanical properties and pore structure of coal gangue foam concrete (CGFC)Preparation of coal gangue foam concrete modified by 2023年2月25日 Among them, five papers focus on the damage evolution and failure characteristics of coal and coallike materials under different conditions Four papers have studied the physical and chemical properties of new rock mass materials (coal gangue, coal tar pitch, freeze–thaw sandstone and anchored bedding rock mass)Microstructure, Characterization and Mechanical Properties of Coal 2020年2月20日 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 oxygenCoal gangue is likely to cause largescale fire and blast disasters, and produce a significant amount of toxic emissions Reactivity activation of waste coal gangue and its impact on the
Environmental impact assessment of acidic coal gangue
2024年3月14日 With the continual advancement of coal resource development, the comprehensive utilization of coal gangue as a byproduct encounters certain constraints A substantial amount of untreated coal gangue is openly stored, particularly acidic gangue exposed to rainfall The leaching effect of acidic solutions, containing heavy metal ions and other 2024年1月1日 Moreover, tests on the thermal properties of coal gangue concrete between room temperature and 800 °C were conducted The formulae for estimating the hightemperature residual strength and thermal properties of coal gangue concrete are provided in the study based on the results of the experimental tests 2 Experimental program21 MaterialsEffect of temperature on thermal properties and residual strength 2023年12月1日 DOI: 101016/jconbuildmat2023 Corpus ID: ; Mechanical properties and micro characterization of coal slime waterbased cementitious materialgangue filling: A novel method for cotreatment of mining wasteMechanical properties and micro characterization of coal slime Download scientific diagram Physical properties of coal gangue aggregate from different origins in China from publication: Application of Coal Gangue as a Coarse Aggregate in Green Concrete Physical properties of coal gangue aggregate from different