
Sichuan sintered coal gangue powder making

Evolution mechanism of pore structure in sintered coal gangue
2023年10月1日 Preparation of highstrength densified ceramsites and porous waterretaining ceramsites to replace part of the original gravel aggregates and natural moisturizing materials, 2023年2月1日 This review summarizes and discusses various porous inorganic materials made from coal gangue, including cement‐based porous materials, porous bricks, porous ceramics (cordierite and mullite)Fabrication and application of porous materials made 2020年1月30日 Coal gangue is a solid waste with low carbon content discharged during the course of the coal mining process The resource utilization of coal gangue could solve Preparation, characteristics and mechanisms of the composite 2024年7月12日 Incorporating calcined CG powder and limestone powder to replace 30–50 % of the cement in cementitious materials generally satisfies and exceeds the performance criteria Review Highcapacity utilization of coal gangue as supplementary

Investigation on activation technology of selfheating
2023年5月26日 Coal gangue is a solid waste discharged in coal mining and dressing process Largescale decarbonization and activation treatment are key steps toward massive and 2023年2月14日 This review summarizes and discusses various porous inorganic materials made from CG, including cementbased porous materials, porous bricks, porous ceramics (cordierite and mullite) and glasses, porous Fabrication and application of porous materials made 2024年9月7日 The direct application of raw coal gangue faces challenges of low active beneficial ingredients, inadequate water and fertilizer retention, presence of potentially toxic Opportunities, challenges and modification methods of coal 2022年9月30日 To improve the performance of CG ceramsite lightweight aggregate concrete (CGCLAC), it is necessary to improve the physical and mechanical properties of coal gangue Preparation of coal gangue ceramsite highstrength concrete and

Newly Generated CaFeldspar during Sintering
2023年11月16日 This study proposed to produce highstrength thermal insulation bricks using coal gangue as the primary material and three other mineral powders as auxiliary materials, including Kfeldspar, CaCO 3 and fly ash2023年10月1日 Preparation of highstrength densified ceramsites and porous waterretaining ceramsites to replace part of the original gravel aggregates and natural moisturizing materials, respectively, is an effective way for the resource utilization of coal gangue (CG) The pore structure of ceramsites affects their strength, density, porosity, etcIn this paper, CG was used Evolution mechanism of pore structure in sintered coal gangue 2023年10月3日 Currently, research on coal gangue concrete primarily focuses on the use of coal gangue as recycled coarse aggregates and its incorporation as a gel material in concrete [ 22 30 ] Due to its lightweight and highstrength Influence of Coal Gangue Powder on the Macroscopic 2014年3月1日 Coal gangue and fly ash were selected as raw materials to prepare building sintered brick The influence of ratio of coal gangue and fly ash and sintering temperature on mineralogical composition Preparation and Properties of Sintered Brick Based on Coal Gangue

Utilization of coal gangue for the production of brick Springer
Coal gangue was used to make cementitious materials [24–27], but the highest utilization rate is just 52 % [27] To consume coal gangue in large scale and to protect the cultivated land, Chinese Government recently encourages the brickmaking enterprises to manufacture brick from coal gangue instead of clay As the chemical and mineralIron ore tailings and coal gangue powder are the main sources of industrial solid wastes, the dispose of which has become severe and urgent with the increasing demand of environmental harmony The present study firstly proposed a reasonable way to deal with the large amount of iron ore tailings and coal gangue powder by making them as the sintered bricks with sewage Preparation, characteristics and mechanisms of the composite sintered 2024年9月7日 The persistent reliance on coal has resulted in the accumulation of substantial coal gangue, a globally recognized problematic solid waste with environmental risks Given the coal gangue properties and global land degradation severity, the resourceful utilization of coal gangue as soil conditioners is believed to be a universally applicable, costeffective, high Opportunities, challenges and modification methods of coal gangue 2023年10月1日 Coal gangue (CG) is a solid waste produced during coal mining The annual emission of CG worldwide is about 1 billion tons, and is usually piled up in a large area and difficult to utilize [[1], [2], [3]]Valuation and reuse of coal mine waste is an alternative approach to solving the mine waste problemEvolution mechanism of pore structure in sintered coal gangue

Preparation of CaO–Al2O3–SiO2 glass ceramics from coal gangue
2012年1月25日 Up to 70% coal gangue was used as the staring material of glass ceramics The prepared CaO–Al 2 O 3 –SiO 2 glass ceramics has a crystal size of about 4 μm The glass ceramics has crystalline gehlenite (Ca 2 Al 2 SiO 7) as the major phase The glass ceramics shows better properties than natural marbles and granites The glass ceramics shows large Iron ore tailings and coal gangue powder are the main sources of industrial solid wastes, the dispose of which has become severe and urgent with the increasing demand of environmental harmony The present study firstly proposed a reasonable way to deal with the large amount of iron ore tailings and coal gangue powder by making them as the sintered bricks with sewage Preparation, characteristics and mechanisms of the composite sintered High Strength GlassCeramics Sintered With Coal Gangue аs а Raw Material Dang Wei1, HY C for 35 h, the powder was ground and then filtered through 80 mesh (Aperture: 0180 mm, ASTM)High Strength GlassCeramics Sintered With Coal Gangue2021年9月1日 Coal gangue was collected from Ordos mining area, China The mineral phase was characterized by XRD (Fig 1 (a))Kaolinite (Al 2 O 3 2SiO 2 2H 2 O) and quartz (SiO 2) were the main crystalline minerals in raw coal gangueThe chemical composition is listed in Table 1The mineral composition of raw coal gangue is given in Table 2Results show that the raw Performance of microwaveactivated coal gangue powder as

Particle size distribution of coal and gangue after impactcrush
2017年7月9日 Based on the separation and backfilling system of coal and gangue, the mineral material impact experiments were conducted utilizing the hardness difference between coal and gangue according to the uniaxial compression experiments The broken coal and gangue particles were collected and screened by different size meshes The particle size distributions of coal 2020年3月17日 Using coal gangue of 75% and coal gangue to clay ratio of 3/1 made the mechanical properties and low density for the sintered glassceramics concrete sewer pipes using waste glass powder andGlassceramics fabricated by efficiently utilizing 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 the2019年11月8日 Hao et al prepared a lowdensity ceramic proppant with calcined int clay (456 wt% Al 2 O 3 ) and solid waste coal gangue by solidstate sintering method; the lowdensity ceramic proppant Effect of Sintering Temperature on Property of LowDensity

Preparation, characteristics and mechanisms of the composite sintered
2020年1月30日 Coal gangue powder is another common tailing discarded after the mining and cleaning of raw coal [5] Currently, the amount of coal gangue powder stored in China reaches 5 billion tons and is growing at a rate of 015–02 billion 2023年6月15日 Herein, we report an insitu reactionbonded SiC membrane sintered at low temperature using a solid waste (ie coal gangue) as the sintering aid to form strong neck connections The effects of sintering temperature and coal gangue proportion on their properties regarding pore size, open porosity, bending strength and pure water permeability were Reactionbonded robust SiC ceramic membranes sintered at low 2023年12月1日 The accumulation of coal gangue not only occupies a vast amount of land but also poses a serious threat to the ecological environment [19, 20] However, coal gangue contains abundant aluminosilicate components, such as Al 2 O 3 and SiO 2, which have the potential to be used as raw materials for alkaliactivated cementitious materials [[21], [22 Alkaliactivated geopolymer materials prepared from coal gangue 2023年2月1日 1 Introduction Coal gangue is a byproduct of coal mining and washing process (Li et al, 2006)In China, there are 5 billion tons of coal gangue accumulated as residual waste, and this value continues to grow at the rate of 300–350 tons per year (Li and Wang, 2019; Moghadam et al, 2019)Large amount of coal gangue not only occupies farmland, but also Enhancement of coal gangue performance by surface micro

Durability of Concrete With Coal Gasification Slag and Coal Gangue Powder
with differentfineness (200, 325, 500, 1250, and 2000 mesh) on the mechanical properties, frost resistance, and chloride penetration resistance of concrete (Wang et al, 2020)2022年1月26日 (2019YFC), Sichuan Science and Technology Program (2021YJ0530), This mix proportion minimizes strength decline in coal gangue powder‐recycled aggregate concrete Durability of Concrete With Coal Gasification Slag and 2022年6月26日 The coal consumption yearonyear growth rate of the world since 2010 (data from International Energy Agency Statistics, 2020) Using Chinese Coal Gangue as an Ecological 2020年5月6日 Airvoid characteristics test for coal gangue aggregate concrete (CGAC), (a) Rapid air concrete airvoid analyzer; (b) Treated surface of CGAC before air structural testingFrost Resistance of Coal Gangue Aggregate Concrete Modified by Steel

Review Highcapacity utilization of coal gangue as supplementary
2024年7月12日 Highcapacity utilization of coal gangue as supplementary cementitious material, geopolymer, and The fineness of CG powder significantly influences the early hydration CG powder reaches a molten state Between 500 and 600°C (M2), small pieces of sintered material are formed As the temperature exceeds 600°C (M3 2022年11月1日 The present study firstly proposed a reasonable way to deal with the large amount of iron ore tailings and coal gangue powder by making them as the sintered bricks with sewage sludge and shale as Enhancement of coal gangue performance by surface micro 2023年6月15日 Reaction sintering is commonly used for lowering the sintering temperature of SiC membranes For example, Bai et al [18] sintered a SiC membrane at 1450 °C in an air atmosphere using Al 2 O 3 as the sintering aid, and the obtained disktype membrane with mullite phase as the neck connection shows a open porosity of 414%Ding et al [19] successfully Reactionbonded robust SiC ceramic membranes sintered at low 2016年6月8日 Coal gangue, an industrial solid waste discarded from coal mining and processing, was used as the sole raw material to prepare brick The coal gangue was crushed, homogenized, milled and then pressed into green compacts The dried compacts were sintered at different temperatures for 2 h The obtained brick samples were characterized with Xray Utilization of coal gangue for the production of brick

The sintering kinetics and properties of sintered glassceramics
2019年10月1日 Glassceramics can be made from discarded glass (Monich et al 2019) or a range of industrial solid wastes, including slag (Ding et al 2015;Xu et al 2021), coal gangue (Dang and He 2020; Wei and 2021年2月8日 The results showed that using WDC to manufacture sintered bricks was technically feasible, but the physical mechanical performance would significantly decrease with the increase of the replacement ratio because of the presence of less silica and excessive calcium Large amounts of waterbased drilling cuttings (WDC) would be generated during the Using waterbased drilling cuttings from shale gas development to In this study, the calcined coal gangue was mixed with Al powder at different mass fractions (5wt% 〜35wt%) After being pressed at 80MPa and sintered at 1200℃ for 2h, the coal gangue/Al cermet material was obtained The phase composition, microstructure and mechanical properties of the material were studiedPreparation and characterization of coal gangue/Al cermet 2023年10月1日 Preparation of highstrength densified ceramsites and porous waterretaining ceramsites to replace part of the original gravel aggregates and natural moisturizing materials, respectively, is an effective way for the resource utilization of coal gangue (CG) The pore structure of ceramsites affects their strength, density, porosity, etcIn this paper, CG was used Evolution mechanism of pore structure in sintered coal gangue

Influence of Coal Gangue Powder on the Macroscopic
2023年10月3日 Currently, research on coal gangue concrete primarily focuses on the use of coal gangue as recycled coarse aggregates and its incorporation as a gel material in concrete [ 22 30 ] Due to its lightweight and highstrength 2014年3月1日 Coal gangue and fly ash were selected as raw materials to prepare building sintered brick The influence of ratio of coal gangue and fly ash and sintering temperature on mineralogical composition Preparation and Properties of Sintered Brick Based on Coal Gangue Coal gangue was used to make cementitious materials [24–27], but the highest utilization rate is just 52 % [27] To consume coal gangue in large scale and to protect the cultivated land, Chinese Government recently encourages the brickmaking enterprises to manufacture brick from coal gangue instead of clay As the chemical and mineralUtilization of coal gangue for the production of brick SpringerIron ore tailings and coal gangue powder are the main sources of industrial solid wastes, the dispose of which has become severe and urgent with the increasing demand of environmental harmony The present study firstly proposed a reasonable way to deal with the large amount of iron ore tailings and coal gangue powder by making them as the sintered bricks with sewage Preparation, characteristics and mechanisms of the composite sintered

Opportunities, challenges and modification methods of coal gangue
2024年9月7日 The persistent reliance on coal has resulted in the accumulation of substantial coal gangue, a globally recognized problematic solid waste with environmental risks Given the coal gangue properties and global land degradation severity, the resourceful utilization of coal gangue as soil conditioners is believed to be a universally applicable, costeffective, high 2023年10月1日 Coal gangue (CG) is a solid waste produced during coal mining The annual emission of CG worldwide is about 1 billion tons, and is usually piled up in a large area and difficult to utilize [[1], [2], [3]]Valuation and reuse of coal mine waste is an alternative approach to solving the mine waste problemEvolution mechanism of pore structure in sintered coal gangue 2012年1月25日 Up to 70% coal gangue was used as the staring material of glass ceramics The prepared CaO–Al 2 O 3 –SiO 2 glass ceramics has a crystal size of about 4 μm The glass ceramics has crystalline gehlenite (Ca 2 Al 2 SiO 7) as the major phase The glass ceramics shows better properties than natural marbles and granites The glass ceramics shows large Preparation of CaO–Al2O3–SiO2 glass ceramics from coal gangueIron ore tailings and coal gangue powder are the main sources of industrial solid wastes, the dispose of which has become severe and urgent with the increasing demand of environmental harmony The present study firstly proposed a reasonable way to deal with the large amount of iron ore tailings and coal gangue powder by making them as the sintered bricks with sewage Preparation, characteristics and mechanisms of the composite sintered

High Strength GlassCeramics Sintered With Coal Gangue
High Strength GlassCeramics Sintered With Coal Gangue аs а Raw Material Dang Wei1, HY C for 35 h, the powder was ground and then filtered through 80 mesh (Aperture: 0180 mm, ASTM)