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
Gangue and rock strength
Strength prediction model considering material, ultrasonic and stress
2020年12月10日 Recycling gangue as the aggregate of cemented waste rock backfill (CWRB) to filling mining is the most economical, environmental and friendly method, which solves the 2 天之前 Based on the existing research work and considering the nonuniform filling effect of caving gangue, this paper analyzes the formation and evolution process and deformation and Study on the evolution mechanism of gangue filling and overlying rock 2023年8月14日 Reference 25 discusses the fluidization diffusion and rock migration laws of coal gangue slurry under different grouting speeds, void ratios, and particle sizes It is found that Diffusion law of coal gangue slurry and the application of 2020年11月23日 In this paper, the compressive strength, initial and final impacting energy, dynamic strength, and failure characteristic of concrete were obtained of singledoping coal Experimental Study on Dynamic Mechanical Properties of Coal Gangue
Effects of Fine Gangue on Strength, Resistivity,
In this study, the effects of the weight content (ranging from 20% to 60%) of fine gangue (0–5 mm) on the microscopic characteristics, resistivity, and compressive strength of CGB were investigated at 3 d and 28 d curing times, respectively2024年4月2日 The results show that physicochemical reactions will generate quartz, kaolinite, and other highstrength substances; hydration reaction between the fine particles will Analysis of strength failure in ganguebased 2023年10月11日 In this study, we analyze the permeability characteristics of coal gangue filler through a set of homemade percolation test systems and introduce fractal characteristics to Study on mechanical properties of coal gangue and fly ash2024年2月20日 The effect of particle size on the recrushing characteristics of different lithological caving crushed gangues in mine goaf is investigated in this study based on an Study of the Internal Rebreaking Characteristics of Crushed Gangue
Experimental investigation on the mixture optimization and
2024年5月1日 However, coal gangue is significantly different with rock aggregate in strength and stiffness, ie, the elastic modulus and strength of coal gangue are normally much lower than those of coal gangue Yang et al [18] investigated the mixture of backfill materials and determined an optimization ratio of cement, 2021年7月1日 Recycling gangue as the aggregate of cemented waste rock backfill (CWRB) to filling mining is the most economical, environmental and friendly method, which solves the environmental problems caused Assessment of cemented waste rock backfill for 2022年4月6日 Abstract Among coal miningrelated wastes, coal gangue (CG) is the heterogeneous waste generated during the mineral processing or coal washing phase of coal mining A thorough understanding of environmental concerns associated with the current model of The Sustainable Utilization of Coal Gangue in Geotechnical 2022年8月22日 Cemented gangue backfill piercolumn (CGBP) which was made of coal gangue, fly ash, cement, and water is the supporting component of the goaf in partial backfill mining or constructional backfill mining for controlling the surface subsidence of coal mining The widthheight ratio and rooffloor strength directly affect the bearing capacity of CGBP under axial Effects of widthheight ratio and rooffloor strength on the
The performance of autoclaved aerated concrete prepared
2024年8月30日 The use of uncalcined arenaceous rock coal gangue powder (ACP) instead of fly ash as a siliceous raw material to produce autoclaved aerated concrete (AAC) is a potential method for achieving low energy consumption and highefficiency utilisation of ACP increasing the 28d compressive strength and bending strength of the cementcoal gangue 2024年4月1日 Backfill mining is an effective way to solve environment pollute, surface subsidence, and groundwater system damage which caused by coal mining However, the complex underground environment may change the physical and mechanical properties of the backfill body, which poses a risk of strength failure This paper analyzed the failure of gangue Analysis of strength failure in ganguebased cementitiousstrength and AE characteristic parameters of the soaked gangue and establish a multiple regression model of the compression strength and the AE characteristic parameters The detailed research approach is shown in Fig 1 Experimental Sample and Equipment In the tests we use cylindrical gangue rock samplesOriginal Research Study on Mechanical and Acoustic 2020年4月14日 The strength property of limestone calcined gangue cement with 45% replacement of clinker was higher than reference cement (CEM I 425 N) on 7 and 28 days Coal gangue is a rock mixed with organic and inorganic compounds codeposited with coal during coal formation Usually in a thin layer and in the coal seam or in the top and bottom of Identification and Activation of Coal Gangue and
Damage evolution and failure characteristics of a cemented gangue
2024年2月9日 Gangue cemented backfilling mining is a safe, efficient, and environmentally friendly mining technology that has numerous benefits, as it allows improving the mineral resources utilization, treating the solid waste, controlling the surface subsidence, and protecting the ecological environment [1], [2]Cemented gangue backfill body is a backfill material based 2020年6月20日 Coal mining causes serious ecological and environmental damage The crushed gangue is backfilled into underground goaf, which not only inhibits mininginduced subsidence but also reduces accumulation of waste on the ground: however, the effects of backfilling with gangue backfill materials in goaf are affected by a combination of multiple factors To predict Prediction of compression and deformation behaviours of gangue 2024年3月27日 There is a certain relationship between the grouting volume of the collapsed zone with fragmented gangue and the rock mass dilation characteristics The dilation coefficient (k p) Li Z, Zhang L (2018) Research on strength characteristics of ganguefly ash backfilling materials with different ratios for coal mining Adv Mater Sci Eng 2018: Gangue grouting filling in subsequent space of coal green 2023年7月1日 The particle size distribution of gangue is an important factor affecting the strength of backfill body To uncover the strength deterioration law and energy dissipation characteristics of cemented backfill with different gangue particle sizes, the uniaxial compressive strength mechanical tests were carried out by scanning electron microscopy analysis Strength deterioration and energy dissipation characteristics
Mechanical properties evaluation of waste ganguebased
2023年12月11日 After solidification, GCBM provides support for the rock, and its mechanical properties determine the support effectiveness Therefore, optimizing the mechanical properties of GCBM is necessary (Li et al 2022)In engineering applications, the loadbearing capacity of GCBM on rock is typically represented by uniaxial compressive strength (UCS) (Chen et al 2021年3月23日 The strength properties of the composite samples mainly depend on the coal strength instead of the rock strength With the rock strength increasing, the peak strain of the composite samples Mechanical Properties and Energy Dissipation Characteristics Gangue is waste rock produced by coal mine excavation that has led to many environmental and social problems An ecofriendly way to make concrete is proposed in this paper that replaces Gangue strength and particle size distribution2024年1月17日 This paper proposes a fundamental investigation of coal gangue and fly ash impact on B pasteurii to enhance the properties of backfill materials The goal is to obtain effective microbial mineralization and potential mechanical properties of coal gangue and fly ash as backfill materials and to mitigate the impact of the most common binders used in the backfill Novel Understandings of Biomineralization in Backfill
Prediction of the elastic modulus of concrete with
DOI: 101016/JISTRUC202009021 Corpus ID: ; Prediction of the elastic modulus of concrete with spontaneouscombustion and rock coal gangue aggregates @article{Liu2020PredictionOT, title={Prediction of the elastic modulus of concrete with spontaneouscombustion and rock coal gangue aggregates}, author={Haiqing Liu and Qian Xu 2020年12月10日 Semantic Scholar extracted view of "Strength prediction model considering material, ultrasonic and stress of cemented waste rock backfill for recycling gangue" by Jiangyu Wu et al Skip to search form Skip to main content Skip to account menu Semantic Scholar's Logo 222,076,057 papers from all fields of science Strength prediction model considering material, ultrasonic 2021年10月18日 The strength of rock is many times higher than that of the CPBR composite The uniaxial compressive strength of the CPBR composite is related to the Ot ratio and the interface angle can be effectively used to study the mechanical strength properties and failure modes of cemented waste concretecoalgangue backfilling [47] The failure Experimental investigation on strength and failure 2020年5月1日 Strength prediction model considering material, ultrasonic and stress of cemented waste rock backfill for recycling gangue 2020, Journal of Cleaner Production The strength parameters of CWRB increase with the confining pressure and dosage of cementing material, while increase firstly and then decrease with the PSD of aggregate particles Reutilisation of coal gangue and fly ash as underground
Coal Mine Solid Waste Backfill Process in China:
2023年9月8日 Gangue is a solid grayishblack rock that contains lower coal content than coal and is commonly associated with coal formation Conversely, fly ash, a byproduct of coal combustion, accounts for producing 60–80% of the 2021年3月1日 Pre One : Particle size distribution of aggregates effects on mesoscopic structural evolution of cemented waste rock backfill Next One : Strength prediction model considering material, ultrasonic and stress of cemented waste rock backfill for recycling gangueAssessment of cemented waste rock backfill for recycling 2020年9月24日 Wang et al [11] analyzed the change of strength by changing the particle size of coal gangue in rock glue gangue fy ash fllings, and found that the increase of coal gangue particle size would Experimental Study on Properties of RockCemented Coal Gangue 2024年9月24日 This study prepares two types of layered cement filling specimens composed of different strength materials, including gangue, cement, fly ash, and water, to examine the impact of layered structure on the physical properties of gangue cement filling and fracture evolution law It conducts the uniaxial compression test on a layered filling body by combining acoustic Mechanical Properties and Fracture Evolution of Layered Gangue
Prediction of the elastic modulus of concrete with
2020年12月1日 Adopting crushed coal gangue as aggregates for new concrete production could be a sustainable alternative to natural aggregates and could reduce landfill space2023年10月11日 To alleviate the ecological environmental problems caused by coal gangue accumulation and fracture of the waterbearing layer, backfill mining technology was proposed (Liu et al 2021; Zhang and Cao 2021; Chen et al 2022)Specifically, certain solid wastes, such as tailings, rock piles, and coal gangue, are selected as filling materials to backfill directly to the Study on mechanical properties of coal gangue and fly ash2024年4月1日 Analysis of strength failure in ganguebased cementitious backfill body from a microscopic perspective PLOS ONE April 2024; 19(4):e Rock Mech Rock Eng 55, 4237–4256 (2022) https: (PDF) Analysis of strength failure in ganguebased 2022年1月25日 Preparation of test materials and samples The test material is the coal gangue from a mine in Anhui province The average uniaxial compressive strength measured by standard rock samples is 2145 MPa, and the average mass density is 235 g/cm 3In order to eliminate the influence of the gangue particle size, the maximum particle size of the gangue particle should Content and gradation of aggregates effect on compaction
Stiffness of gangue backfilling body in goaf and its influence
2023年3月18日 To study the influence mechanism of gangue backfilling material (GBM) with different particle sizes on overburden deformation, the particle movement characteristics and the mechanism of stiffness difference with different particle sizes of GBM were analysed by physical compression and particle flow numerical simulations Then, combined with a similar material 2024年5月1日 However, coal gangue is significantly different with rock aggregate in strength and stiffness, ie, the elastic modulus and strength of coal gangue are normally much lower than those of coal gangue Yang et al [18] investigated the mixture of backfill materials and determined an optimization ratio of cement, Experimental investigation on the mixture optimization and 2021年7月1日 Recycling gangue as the aggregate of cemented waste rock backfill (CWRB) to filling mining is the most economical, environmental and friendly method, which solves the environmental problems caused Assessment of cemented waste rock backfill for 2022年4月6日 Abstract Among coal miningrelated wastes, coal gangue (CG) is the heterogeneous waste generated during the mineral processing or coal washing phase of coal mining A thorough understanding of environmental concerns associated with the current model of The Sustainable Utilization of Coal Gangue in Geotechnical
Effects of widthheight ratio and rooffloor strength on the
2022年8月22日 Cemented gangue backfill piercolumn (CGBP) which was made of coal gangue, fly ash, cement, and water is the supporting component of the goaf in partial backfill mining or constructional backfill mining for controlling the surface subsidence of coal mining The widthheight ratio and rooffloor strength directly affect the bearing capacity of CGBP under axial 2024年8月30日 The use of uncalcined arenaceous rock coal gangue powder (ACP) instead of fly ash as a siliceous raw material to produce autoclaved aerated concrete (AAC) is a potential method for achieving low energy consumption and highefficiency utilisation of ACP increasing the 28d compressive strength and bending strength of the cementcoal gangue The performance of autoclaved aerated concrete prepared 2024年4月1日 Backfill mining is an effective way to solve environment pollute, surface subsidence, and groundwater system damage which caused by coal mining However, the complex underground environment may change the physical and mechanical properties of the backfill body, which poses a risk of strength failure This paper analyzed the failure of gangue Analysis of strength failure in ganguebased cementitiousstrength and AE characteristic parameters of the soaked gangue and establish a multiple regression model of the compression strength and the AE characteristic parameters The detailed research approach is shown in Fig 1 Experimental Sample and Equipment In the tests we use cylindrical gangue rock samplesOriginal Research Study on Mechanical and Acoustic
Identification and Activation of Coal Gangue and
2020年4月14日 The strength property of limestone calcined gangue cement with 45% replacement of clinker was higher than reference cement (CEM I 425 N) on 7 and 28 days Coal gangue is a rock mixed with organic and inorganic compounds codeposited with coal during coal formation Usually in a thin layer and in the coal seam or in the top and bottom of 2024年2月9日 Gangue cemented backfilling mining is a safe, efficient, and environmentally friendly mining technology that has numerous benefits, as it allows improving the mineral resources utilization, treating the solid waste, controlling the surface subsidence, and protecting the ecological environment [1], [2]Cemented gangue backfill body is a backfill material based Damage evolution and failure characteristics of a cemented gangue 2020年6月20日 Coal mining causes serious ecological and environmental damage The crushed gangue is backfilled into underground goaf, which not only inhibits mininginduced subsidence but also reduces accumulation of waste on the ground: however, the effects of backfilling with gangue backfill materials in goaf are affected by a combination of multiple factors To predict Prediction of compression and deformation behaviours of gangue