Field study on the improvement of coal gangue filling,
05-05-2021· In this study, dynamic compaction method was used to treat the gangue hill of the Xinglongzhuang coal mine in China, and the deep compaction of deep coal gangue was examined. The crushing characteristics and improving depth of coal gangue filling under different dynamic compaction conditions were determined. Dynamic compaction tests with
Direct-impact of sieving coal and gangue - ScienceDirect
01-07-2010· Received 12 December 2009; accepted 15 February 2010 *Corresponding author. Tel: 86 516 66693096 E-mail address: [email protected] doi: 10.1016/S1674-5264(09)60253-2 Direct-impact of sieving coal and gangue LI Jianping * , DU Changlong, BAO Jianwei School of Mechanical and Electrical Engineering, China University of Mining & Technology, Xuzhou
A concrete material with waste coal gangue and fly ash,
20-01-2016· Coal gangue The waste coal gangue was supplied from the Jiawang mining area in Xuzhou, Jiangsu Province. The mineral composition of coal gangue is dominated by kaolinite. Kaolinite mainly was present as flakes of scaly morphology with a partial wormlike structure. The coal gangue was not spontaneously combustible.
1000-6000T/H Coal Or Coal Gangue Crushing Station – Large,
Large pieces of coal gangue are evenly fed by the vibrating feeder through the silo, and then transported to the jaw crusher for coarse or primary crushing. After primary crushing, the coal gangue is sifted through the vibrating screen, and then transported by the belt conveyor to double roller crusher for secondary and fine crushing. Second Stage:
Radiation characteristics of natural gamma-ray from coal,
09-01-2018· Crushed coal and gangue radiation test:, School of Information and Electrical Engineering, China University of Mining and Technology, Xuzhou, 221116, China. Ningbo Zhang.
Integrated green mining technology of “coal mining-gangue,
24-08-2021· According to three under coal mining, underground gangue treatment, surface construction, and environmental protection in Tangshan Mining Branch of Kailuan (Group) Co., Ltd. (short for “Tangshan Mine”), we elaborated the integrated green mining technology of “coal mining-gangue washing-backfilling-strata control-system monitoring,” including the multi-seam
Mechanical and Acoustic Emission Behavior of Gangue,
The application of gangue concrete can be an effective method to solve the massive gangue heap and shortage of raw materials of concrete by replacing the gravel and river sand with crushed gangue. An Acoustic emission (AE) is one of the non-destructive testing methods that can be used for damage det
Journal of Cleaner Production - Cugb
area in Xuzhou, Jiangsu Province. The mineral composition of coal gangue is dominated by kaolinite. Kaolinite mainly was present as flakes of scaly morphology with a partial wormlike structure. The coal gangue was not spontaneously combustible. Before use, coal gangue was crushed and washed to remove the dust. Next, after
煤矸石破碎工艺模拟与优化-【维普期刊官网】- 中文期刊服务平台
The crushers of Pingshuo coal gangue power plant couldn＇t meet the produc-tion requirement. The equipment selection were as follows： jaw crusher power was 31 k W,the feed particles were from 300 mm to 500 mm,the discharging particles were from 10 mm to 300 mm;,
Junmeng LI | PhD. | China University of Mining and,
The crushed gangue materials which are filled into the goaf in solid-backfilling coal mining become the main body of bearing the overburden after the
Particle-Crushing Characteristics and Acoustic-Emission,
In solid backfilling coal mining (SBCM), the crushed gangue backfilling material, Particle-Crushing Characteristics and Acoustic-Emission Patterns of Crushing Gangue Backfilling Material under Cyclic, Technology, Xuzhou 221116, China Yanli Huang State Key Laboratory of Coal Resources and Safe Mining, School of Mines, China University of,
Radiation characteristics of natural gamma-ray from coal,
09-01-2018· Crushed coal and gangue radiation test:, School of Information and Electrical Engineering, China University of Mining and Technology, Xuzhou, 221116, China. Ningbo Zhang.
Integrated green mining technology of “coal mining-gangue,
24-08-2021· According to three under coal mining, underground gangue treatment, surface construction, and environmental protection in Tangshan Mining Branch of Kailuan (Group) Co., Ltd. (short for “Tangshan Mine”), we elaborated the integrated green mining technology of “coal mining-gangue washing-backfilling-strata control-system monitoring,” including the multi-seam
Journal of Cleaner Production - Cugb
area in Xuzhou, Jiangsu Province. The mineral composition of coal gangue is dominated by kaolinite. Kaolinite mainly was present as flakes of scaly morphology with a partial wormlike structure. The coal gangue was not spontaneously combustible. Before use, coal gangue was crushed and washed to remove the dust. Next, after
煤矸石破碎工艺模拟与优化-【维普期刊官网】- 中文期刊服务平台
The crushers of Pingshuo coal gangue power plant couldn＇t meet the produc-tion requirement. The equipment selection were as follows： jaw crusher power was 31 k W,the feed particles were from 300 mm to 500 mm,the discharging particles were from 10 mm to 300 mm;,
On-Site Measurement on Compaction Characteristics of Coal,
Gangue is the main backfilling material in solid backfilling mining, and its compaction characteristics determine the overburden control effect and surface subsidence. Under the action of compaction force and overburden pressure, the gangue will be broken, rotated and occluded, resulting in different compaction characteristics of gangue in the field and laboratory.
Mechanical Properties of Furnace Slag and Coal Gangue,
22-11-2021· After screening, however, the crushing value (the ability of a material to resist crushing) of furnace slag was lower than that of coal gangue, and the majority of the furnace slag particles had rough and irregular surface shapes, similar to the appearance of medium sand (i.e., sand with fine moduli of 3.0–2.3 and an average grain size of 0.5 mm).
Prediction of compression and deformation behaviours of,
20-06-2020· Coal mining causes serious ecological and environmental damage. The crushed gangue is backfilled into underground goaf, which not only inhibits mining-induced 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
Junmeng LI | PhD. | China University of Mining and,
The crushed gangue materials which are filled into the goaf in solid-backfilling coal mining become the main body of bearing the overburden after the tamping process.
Acoustic Emission and Ultrasonic Characteristics in the,
concrete-coal gangue backfilling (CWCGB) with 600 days of curing time were studied under uniaxial loading conditions. Waste concrete particles of 5mm acting as fine aggregates substituted for 30% and 50% fine coal gangue in the cemented coal gangue backfilling (CGB).
Particle-Crushing Characteristics and Acoustic-Emission,
In solid backfilling coal mining (SBCM), the crushed gangue backfilling material, Particle-Crushing Characteristics and Acoustic-Emission Patterns of Crushing Gangue Backfilling Material under Cyclic, Technology, Xuzhou 221116, China Yanli Huang State Key Laboratory of Coal Resources and Safe Mining, School of Mines, China University of,
Monitoring and measurement analysis of key indexes for the,
07-01-2022· After crushing and screening, the mixture of gangue and fly ash is transported underground. The backfilling materials are gangue, fly ash, water, and additives. The gangue crushed to a certain particle size is made into cement or paste according to the specified ratio and pumped underground through the pipeline. Vertical feeding system
The role of gangue on the mitigation of mining-induced,
Gangue, produced from coal mining and washing process, is a serious threat to the ground environment. Gangue backfilling mining method can solve this problem and reduce mining-induced hazards, e.g., controlling surface subsidence and preventing water inrush from seeping into goaf by cracks in overly
Radiation characteristics of natural gamma-ray from coal,
09-01-2018· Crushed coal and gangue radiation test:, School of Information and Electrical Engineering, China University of Mining and Technology, Xuzhou, 221116, China. Ningbo Zhang.
煤矸石破碎工艺模拟与优化-【维普期刊官网】- 中文期刊服务平台
The crushers of Pingshuo coal gangue power plant couldn＇t meet the produc-tion requirement. The equipment selection were as follows： jaw crusher power was 31 k W,the feed particles were from 300 mm to 500 mm,the discharging particles were from 10 mm to 300 mm;,
Integrated green mining technology of “coal mining-gangue,
24-08-2021· According to three under coal mining, underground gangue treatment, surface construction, and environmental protection in Tangshan Mining Branch of Kailuan (Group) Co., Ltd. (short for “Tangshan Mine”), we elaborated the integrated green mining technology of “coal mining-gangue washing-backfilling-strata control-system monitoring,” including the multi-seam
On-Site Measurement on Compaction Characteristics of Coal,
Gangue is the main backfilling material in solid backfilling mining, and its compaction characteristics determine the overburden control effect and surface subsidence. Under the action of compaction force and overburden pressure, the gangue will be broken, rotated and occluded, resulting in different compaction characteristics of gangue in the field and laboratory.
Mechanical Properties of Furnace Slag and Coal Gangue,
22-11-2021· After screening, however, the crushing value (the ability of a material to resist crushing) of furnace slag was lower than that of coal gangue, and the majority of the furnace slag particles had rough and irregular surface shapes, similar to the appearance of medium sand (i.e., sand with fine moduli of 3.0–2.3 and an average grain size of 0.5 mm).
Prediction of compression and deformation behaviours of,
20-06-2020· Coal mining causes serious ecological and environmental damage. The crushed gangue is backfilled into underground goaf, which not only inhibits mining-induced 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
Acoustic Emission and Ultrasonic Characteristics in the,
concrete-coal gangue backfilling (CWCGB) with 600 days of curing time were studied under uniaxial loading conditions. Waste concrete particles of 5mm acting as fine aggregates substituted for 30% and 50% fine coal gangue in the cemented coal gangue backfilling (CGB).
