Thermal decomposition of selected coal gangue,Journal of ...
2017-9-20 · Thermal decomposition of selected coal gangue. Journal of Thermal Analysis and Calorimetry ( IF 4.626 ) Pub Date : 2017-09-20, DOI: 10.1007/s10973-017-6687-4. Bohui Xu,Qinfu Liu,Bo Ai,Shuli Ding,Ray L. Frost. The thermal behavior of two mineral-type coal gangues under different temperature conditions was investigated by heating treatment of ...- - Inner Mongolia University2022-1-4 · Clay Sci., 2021, 213, 106238. 3. Xin Zhang, Min Li, Yiguo Su, Chunfang Du *, A novel and green strategy for efficient removing Cr(VI) by modified kaolinite-rich coal gangue.
Experimental research on utilization of coal gangue as clay ...
2021-9-27 · Experimental research on utilization of coal gangue as clay for optimized formula on cement clinker calcination QIU Guo-hua, SHI Zheng-lun, YU Chun-jiang,XU Yang, QIU kun-zan,SHI Zheng-zhan, LUO Zhong-yang (State Key Laboratory of Clean EnergyMechanical Properties of Coal Gangue Used as Subgrade .. view to the gangue characteristic and the roadbed padding''s essential requirements, the improving experiments for gangues mix the clay in four coal mines along the route to the Jidong highway Huojia section were carried out. It has been studied that the compaction test, the oedometric test, the California bearing test and the direct shear test for coal gangues mixed …
Chemical composition of the starting kaolin clay ...
Coal gangue is the main industrial solid waste that is physically separated from bulk coal during coal preparation. ... High content of clay mineral in coal gangue is found to be a potential ...The composition of coal gangue is more complex, and its .. al gangue is the fixed product during the process of coal mining, washing and processing. And its chemical composition is SiO 2, Al 2O 3, Fe 2O 3, MgO, CaO, TiO 2, etc . Since the middle of the 20th century, coal gangue emissions have been increasing, and now it has become one of the industrial waste that
Thermal decomposition of selected coal gangue | …
2017-9-20 · TG-DTG-DSC. The thermal analysis curves of clay minerals could reflect the water contents, structural characteristics and crystal chemical characteristic changes in the clay minerals [9, 10].According to the thermogravimetric analysis–differential thermogravimetry–differential scanning calorimetry (TG-DTG-DSC) patterns (Fig. 1) of …Materials | Free Full-Text | Application of Coal Gangue as ...Typical coal gangue contains 50–70% clay minerals, 20–30% quartz, and 10–20% other minerals and carbon impurity. Compared with Europe and South America, the content of kaolinite in the coal gangue of China and USSR is richer, showing more potential for reuse, as kaolinite is …
Feasibility analysis on utilization of coal gangue as clay ...
Download Citation | Feasibility analysis on utilization of coal gangue as clay for cement | Samples were selected from 28 mines in 10 provinces to analyze the coal gangue characteristic in order ...Experimental research on utilization of coal gangue as clay ...2021-9-27 · Experimental research on utilization of coal gangue as clay for optimized formula on cement clinker calcination QIU Guo-hua, SHI Zheng-lun, YU Chun-jiang,XU Yang, QIU kun-zan,SHI Zheng-zhan, LUO Zhong-yang (State Key Laboratory of Clean Energy
Field study on the improvement of coal gangue filling ...
2021-5-5 · The coal gangue contains fine particles with a particle size less than 4.75mm, coarse particles larger than 4.75mm. k w is the coal gangue fine-rough grain ratio. The coal gangue fine-rough ratios after DC are 0.4032, 0.4616, and 0.5038 for tamping energies of 2000, 2500, and 3000kN.m, respectively.Extraction of alumina from alumina rich coal gangue by a ...2020-4-29 · Coal gangue is an industrial solid waste produced by coal mining and processing [1–3]. The average production of gangue accounts for 10–15% of raw coal production [4,5], making coal gangue one of the biggest solid wastes in China. At present, utilization ratio of coal gangue can reach about 60% in some countries.
Utilization of coal gangue and copper tailings as clay for ...
2011-12-20 · In order to avoid environmental pollution from Coal gangue (CG) and copper tailings (CT), the utilization as cement clinker calcinations was experimentally investigated. Low-calcium limestone was also selected as another raw material. The clinker component and microstructure were analyzed by XRD and SEM. The experimental results showed that qualified cement …-【】- ...Study on Clay Coal Gangue Strengthening Technology PDF ,、,2.36~4.75 mm、4.75~9.5 mm。1 h,, ...
The composition of coal gangue is more complex, and its ...
Coal gangue is the fixed product during the process of coal mining, washing and processing. And its chemical composition is SiO 2, Al 2O 3, Fe 2O 3, MgO, CaO, TiO 2, etc . Since the middle of the 20th century, coal gangue emissions have been increasing, and now it has become one of the industrial waste thatField study on the improvement of coal gangue filling ...2021-5-5 · The coal gangue contains fine particles with a particle size less than 4.75mm, coarse particles larger than 4.75mm. k w is the coal gangue fine-rough grain ratio. The coal gangue fine-rough ratios after DC are 0.4032, 0.4616, and 0.5038 for tamping energies of 2000, 2500, and 3000kN.m, respectively.
High Strength Glass-Ceramics Fabricated With Coal …
2019-8-24 · Coal Gangue Bauxite Clay Steatite Limestone 1# 60 30 5 3 2 2# 55 35 5 3 2 3# 50 40 5 3 2 4# 45 45 5 3 2 5# 40 50 5 3 2 Mullite (Al 6 Si 2 O 13) generally has high strength and so was designed as main crystal phase. Combine with utilization rate of the coal gangue; the basic prescriptions were designed as listed in Table 2.RECYCLING OF COAL GANGUE TO PREPARE LOW …2019-7-18 · alumina content. Coal gangue is a hazardous by-product of the coal mining industry, and the average production of coal gangue is about 10 - 15 % of raw coal production [15]. The main composition of coal gangue is also SiO 2 and Al 2 O 3. The properties of ceramic proppants obtained by flint clay and coal gangue should be in some respects
Comprehensively utilizing waste coal gangue to fabricate ...
Coal gangue Bauxite Clay Steatite Limestone 1# 60 30 5 3 2 2# 55 35 5 3 2 3# 50 40 5 3 2 4# 45 45 5 3 2 5# 40 50 5 3 2. Comprehensively utilizing waste coal gangue to fabricate high strength glass-ceramics 71 illustrate the properties of the glass-ceramics formed atAdvantages of Coal Gangue Brick making2017-12-12 · The coal gangue brick adopts high-intensity vacuum extruder method.on the process of raw materials, it uses the process such as hammer breaking,coarse,high-speed fine breaking, screen and so on which increase the compactness of the brick (a new brick product can stand a 90-100kg weight people).
China Coal Gangue, Coal Gangue Manufacturers, Suppliers ...
China Coal Gangue manufacturers - Select 2022 high quality Coal Gangue products in best price from certified Chinese Block Making Machine, Block Machine suppliers, wholesalers and factory on Made-in-China coal-gangue - WinnerMacMeanwhile, gangue could replace clay as raw material of brick making to save fertile farmland, and coal resource could be saved. Gangue could replace clay to be material of cement and lightweight aggregate, and be used to produce low-heat value gas, ceramic, soil conditioner, or applied for road paving, underground filling, ground filling.
Experimental research on utilization of coal gangue as clay ...
2021-9-27 · Experimental research on utilization of coal gangue as clay for optimized formula on cement clinker calcination QIU Guo-hua, SHI Zheng-lun, YU Chun-jiang,XU Yang, QIU kun-zan,SHI Zheng-zhan, LUO Zhong-yangGlass-ceramics fabricated by efficiently utilizing coal …2020-3-17 · Using coal gangue of 75% and coal gangue to clay ratio of 3/1 made the mechanical properties optimal. The sintering temperature of 1370 °C was found to be optimal because mullite and spinel become the main crystal phase and thereby realizing high strength, low water absorbance, and low density for the sintered glass-ceramics.
Mechanical Properties of Coal Gangue Used as Subgrade ...
In view to the gangue characteristic and the roadbed padding''s essential requirements, the improving experiments for gangues mix the clay in four coal mines along the route to the Jidong highway Huojia section were carried out. It has been studied that the compaction test, the oedometric test, the California bearing test and the direct shear test for coal gangues mixed …High Strength Glass-Ceramics Sintered With Coal …2019-10-14 · The utilization ratio of coal gangue, the ratio of the coal gangue with clay, mineralization agents, forming process and sintering process on the properties of the fabricated glass-ceramics were optimized. The utilization ratio of coal gangue reached 75, and the ratio of coal gangue to clay was 3/1, as an optimal property was observed. The
Influence of coal gangue mulching with various …
2021-7-28 · Coal gangue, as a type of solid waste discharged during coal mining and coal washing, occupies a large amount of land resources owing to accumulated gangue, which eventually results in ecological ...Embankment Displacement PLAXIS Simulation and ...2020-3-18 · and second layers of coal gangue subgrade boundary (A Interface), the coal gangue subgrade and the lower clay boundary (B Interface) and the clay layer and the dense sand layer boundary. The three. Minerals 2020, 10, 218 4 of 15 interface virtual thickness factors are 0.1. Since the strength of the interface is lower than that of the
Embankment Displacement PLAXIS Simulation and ...
2020-3-18 · and second layers of coal gangue subgrade boundary (A Interface), the coal gangue subgrade and the lower clay boundary (B Interface) and the clay layer and the dense sand layer boundary. The three. Minerals 2020, 10, 218 4 of 15 interface virtual thickness factors are 0.1. Since the strength of the interface is lower than that of theThermal decomposition of selected coal gangue,Journal of ...2017-9-20 · Thermal decomposition of selected coal gangue. Journal of Thermal Analysis and Calorimetry ( IF 4.626 ) Pub Date : 2017-09-20, DOI: 10.1007/s10973-017-6687-4. Bohui Xu,Qinfu Liu,Bo Ai,Shuli Ding,Ray L. Frost. The thermal behavior of two mineral-type coal gangues under different temperature conditions was investigated by heating treatment of ...
Experimental research on utilization of coal gangue as clay ...
2021-9-27 · Experimental research on utilization of coal gangue as clay for optimized formula on cement clinker calcination QIU Guo-hua, SHI Zheng-lun, YU Chun-jiang,XU Yang, QIU kun-zan,SHI Zheng-zhan, LUO Zhong-yang (State Key Laboratory of Clean EnergyHow To Effectively Use Coal Gangue?2021-10-13 · Coal gangue can partially or completely replace clay components to produce ordinary cement. Spontaneous or artificially burned coal gangue has certain activity and can be used as an active mixing material for cement to produce ordinary Portland cement (with a content of less than 20%), pozzolanic cement (with a content of 20-50%) and less ...
Feasibility analysis on utilization of coal gangue as clay ...
Download Citation | Feasibility analysis on utilization of coal gangue as clay for cement | Samples were selected from 28 mines in 10 provinces to analyze the coal gangue characteristic in order .. al-gangue - WinnerMacMeanwhile, gangue could replace clay as raw material of brick making to save fertile farmland, and coal resource could be saved. Gangue could replace clay to be material of cement and lightweight aggregate, and be used to produce low-heat value gas, ceramic, soil conditioner, or applied for road paving, underground filling, ground filling.
Extraction of alumina from alumina rich coal gangue by a ...
2020-4-29 · Coal gangue is an industrial solid waste produced by coal mining and processing [1–3]. The average production of gangue accounts for 10–15% of raw coal production [4,5], making coal gangue one of the biggest solid wastes in China. At present, utilization ratio of coal gangue can reach about 60% in some countries.Thermal decomposition of selected coal gangue,Journal of ...2017-9-20 · Thermal decomposition of selected coal gangue. Journal of Thermal Analysis and Calorimetry ( IF 4.626 ) Pub Date : 2017-09-20, DOI: 10.1007/s10973-017-6687-4. Bohui Xu,Qinfu Liu,Bo Ai,Shuli Ding,Ray L. Frost. The thermal behavior of two mineral-type coal gangues under different temperature conditions was investigated by heating treatment of ...
Feasibility study on the application of coal gangue as ...
2017-5-1 · The coal gangue used in this study was obtained from a coal field in Yulin, Shanxi Province, China. Before the permeability and batch sorption tests, the coal gangue was oven-dried at 105 °C, cooled to room temperature, and ground to pass a mesh with opening size of 1 mm (Fig. 1a). Table 1 summarizes the geotechnical properties and chemical composition of …Reactivity activation of waste coal gangue and its impact ...2020-2-20 · In the construction field, coal gangue has also been used to make bricks, concrete blocks, mosaics, fired-glazed floor tiles, lightweight aggregate and other low value-added building materials,, .At present, coal gangue can partly or completely replace clay for aluminum adjustment in cement clinker production, . In fact, the major concern of using coal gangue in …
Coal and gangue identification method based on the ...
2021-7-28 · Coal and gangue (rock) identification is the essential process in a coal preparation plant. In an actual coal preparation plant, the existing classification methods have many disadvantages in safety and identification rate. We utilized the echo intensity image (EII) of lidar for coal and gangue identification for the first time, to the best of our knowledge, and achieved …The Environmental Geochemistry of Trace Elements and ...2014-8-28 · The properties of coal gangue. The main chemical compositions of coal gangue are SiO 2, Al 2 O 3, Fe 2 O 3 and CaO, which occupies 58, …
Mechanical Properties of Coal Gangue Used as Subgrade ...
In view to the gangue characteristic and the roadbed padding''s essential requirements, the improving experiments for gangues mix the clay in four coal mines along the route to the Jidong highway Huojia section were carried out. It has been studied that the compaction test, the oedometric test, the California bearing test and the direct shear test for coal gangues mixed …Making sand and gravel aggregate from coal gangue | LZZG2021-12-23 · Coal gangue brick is made of coal gangue as raw material, mixed with a small amount of clay after being ground, pressed into shape, air-dried and then sent to the kiln for calcination. It weighs about 1400~1650kg per cubic meter. …
Influence of coal gangue mulching with various …
2021-7-28 · Coal gangue, as a type of solid waste discharged during coal mining and coal washing, occupies a large amount of land resources owing to accumulated gangue, which eventually results in ecological .. emical composition of the starting kaolin clay .. al gangue is the main industrial solid waste that is physically separated from bulk coal during coal preparation. ... High content of clay mineral in coal gangue is found to be a potential ...
Influence of coal gangue mulching with various …
2021-7-28 · Coal gangue, as a type of solid waste discharged during coal mining and coal washing, occupies a large amount of land resources owing to accumulated gangue, which eventually results in ecological ...Research on the Ecological Protection of Coal Gangue …2021-11-18 · To improve the ecological protection of coal gangue slopes, this work developed a polymer curing agent using a pure acrylic emulsion and cement as the main raw materials. By testing the workability, waterproofing, durability, and adhesion of the curing agent with different polymer-to-cement ratios, the optimum mixing ratio of the polymer curing agent was obtained, …
Thermal decomposition of selected coal gangue | …
2017-9-20 · TG-DTG-DSC. The thermal analysis curves of clay minerals could reflect the water contents, structural characteristics and crystal chemical characteristic changes in the clay minerals [9, 10].According to the thermogravimetric analysis–differential thermogravimetry–differential scanning calorimetry (TG-DTG-DSC) patterns (Fig. 1) of …Glass-ceramics fabricated by efficiently utilizing coal …2021-8-4 · ing coal gangue and clay. This work optimized the many processing parameters including the rate of using coal gangue, coal gangue to clay ratio, mineralizers, and process of forming and sintering. Using coal gangue of 75% and coal gangue to clay ratio of 3/1 made the mechanical properties optimal.