Applied Mechanics and Materials Vol. 329 | Scientific

In a coal mine as an example,and acquisiting more irregular and different particle sizes of coal and gangue were broken by static experiments and dynamic crushing experiment, using the experimental data obtained pressure distribution and pressure distribution curve equation,by equation to solve the crushing critical force FL of the size of 50 ...

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Experimental study on the fractal characteristics of ...

Experimental results showed that crushing ratios of coal and gangue decreased with the increase of particle size and impact velocity. As the impact velocity was between 5 m/s-8 m/s and the initial ...

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Coal Gangue Crushing Production Line

Utilization of coal gangue as coarse aggregates in ...

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Coal Gangue Crushing Production Line

2021-8-20 · Coal Gangue Crushing Production Line The coal gangue crusher with crushing capacity of 10-160 tons per hour is PFL vertical compound crusher. This crusher is a new type of high-efficiency crushing equipment developed in 1990s by introducing and absorbing the technology of foreign vertical shaft hammer crusher.

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The distribution discipline of impact crushed on coal and ...

The impacting crusher was used to impact crushing test on coal and gangue from three mining with different impact velocity.The distribution function of coal and ganguethe influence of the impact ...

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Reutilisation of coal gangue and fly ash as underground ...

2020-5-1 · Therefore, gangue with a particle size below 50 mm was selected for this test, and the particle size distribution of the coal gangue sample after crushing is shown in Fig. 3. To prepare the test samples, the gangue was crushed with a hammer down to 80 mm particles and then further crushed to 50 mm particles using a small crusher.

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The working principle of the gangue to roll crusher in ...

2016-10-13 · Applicable to coal, metallurgy, mining, chemical, building materials and other industries more suitable for large coal or coal preparation plant coal (including waste rock) broken. Gear crusher crushing capacity, motor and reducer with a distance between the type of hydraulic coupling to prevent power overload, overload sensor protection, safe and reliable.

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Valorization of calcined coal gangue as coarse aggregate ...

2021-8-1 · Crushing value of CGA 450 was 4.0% lower than that of CGA raw due to the burning of carbon. Furthermore, the apparent density of CGA 750 is 30 kg/m 3 lower than that of CGA raw, mainly caused by the dehydroxylation of kaolinite during the process of calcination at 750 °C.

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Minerals | Free Full-Text | Particle-Crushing ...

In solid backfilling coal mining (SBCM), the crushed gangue backfilling material (CGBM) is generally compacted circularly by a compaction machine in order to reduce its compressibility. In this cyclic compaction process, the particles are crushed, which has a significant effect on the deformation resistance of CGBM. However, the deformation resistance of CGBM is critical for controlling ...

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The use of coal gangue and crushing equipment_Kefid …

2021-1-18 · The use of coal gangue and crushing equipment. Coal gangue is a solid waste discharged during coal mining and coal washing. It is a dark-gray rock with lower carbon content and harder than coal that is associated with coal seams during coal formation. Coal gangue is mainly used to produce gangue cement, lightweight aggregates of concrete ...

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Coal gangue – Electro Magnetic Industries

First stage. Coal gangue will be used for electricity production after primary crushing by crusher: mainly co-fire washed medium coal and washed gangue to generate electricity. The generally heating value is 3,500 kcal per kilogram.

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Particle-Crushing Characteristics and Acoustic

2018-6-7 · minerals Article Particle-Crushing Characteristics and Acoustic-Emission Patterns of Crushing Gangue Backfilling Material under Cyclic Loading Junmeng Li 1,2 ID, Yanli Huang 1,*, Zhongwei Chen 2, Meng Li 1, Ming Qiao 1 and Mehmet Kizil 2 1 State Key Laboratory of Coal Resources and Safe Mining, School of Mines, China University of Mining & Technology, Xuzhou 221116, China; …

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Field study on the improvement of coal gangue filling ...

2021-5-5 · The crushing characteristics and improving depth of coal gangue filling under different dynamic compaction conditions were determined. Dynamic compaction tests with different tamping energy were performed to improve the coal gangue filling. In addition, dynamic penetration tests and the foundation bearing capacity were conducted.

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Experimental Research on Critical Force of Crushing and ...

First, The pressure test on two actual coal mine irregular and different particle sizes of coal and gangue, through the experimental data, using MATLAB software to give a graphic simulation and assumptions test of normal distribution, by the graphics and hypothetical test confirmed that coal and gangue had obvious demarcation, namely the critical force of crushing and storing coal gangue.

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What is the application of coal gangue crusher?

2017-4-26 · Coal gangue crusher with features of large capacity and low noise can be widely used for crushing coal cinder, slag, shale, coal gangue and construction waste, which solves the problem about using gangue and cinder as the additive and internal fuel for the brickyard, and using gangue and shale to produce standard brick and air brick.

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Coal Gangue Crushing and Screening

2021-8-11 · Coal Gangue Crushing In an experiment that uses jaw crusher crush gangue, screening the crushed gangue and measure the calorific value. It is generally found that the calorific value is inversely proportional to the number of breakages. The more broken coal gangue …

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Study on Crushing and Separation of Coal and Gangue ...

Therefore, the selective crushing and separation of coal and gangue was preliminarily tested through the testing machine so as to obtain the selective crushing pressure distribution curves of coal and gangue, and then the curves were drawn based on its numerical distribution.

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Russia 300TPH Coal Gangue Crushing Line

2021-5-10 · Coal Gangue Crushing Project Profile. The project was located in an extremely cold place in Russia. Because of low temperature ( The temperature in some places is around -67.7℃), the hydraulic oil would reach the pour point easily which then increases the fluidity pressure, heat and reduces the efficiency. Meanwhile, the low temperature badly ...

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coal gangue crushing equipment in macau

2020-9-23 · 10006000TH Coal Or Coal Gangue Crushing Station – Large. 10006000TH Coal Or Coal Gangue Crushing Station Coal crushing production line is designed by our company which solve the needs of receiving feeding crushing screening transportation temporary storage and other operations for large and mediumsized openpit coal mining. Get Price

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Impactive crushing and separation experiment of coal and ...

Experimental results showed that crushing ratios of coal and gangue decreased with the increase of particle size and impact velocity. As the impact velocity was between 5 m/s-8 m/s and the initial ...

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Do You Know Coal Gangue Processing Machines

 · Do You Know Coal Gangue Processing Machines. The supply of coal gangue: Coal gangue would be the common term of solid waste materials coming from coal mine construction, coal production method widely typical in the construction, development diving, coal mining and coal washing process with exhaust carbon rock. Three aspects of coal gangue source.

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Characterizations of macroscopic deformation and particle ...

2019-2-1 · The change rules of crushing ratio and newly added fine particle content with the cyclic loading times were similar. This is due to that the crushing forms of the gangue block in CGPM samples are mainly edges fracture and corners fracture. In this two crushing forms, gangue blocks in CGPM are mostly crushed into fine particles (0–10 mm).

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Propagation of stress wave and fragmentation ...

2021-7-21 · During the model building process, water, coal, and gangue were represented by different sets of particles with their own material properties, and the random defects were simulated using Wang''s (Wang et al., 2020b) method for pre-cracking. In this paper, the propagation law of stress waves in coal with gangue is described in Section 2.

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Direct-impact of sieving coal and gangue

2010-7-1 · Table 1 Hardness of the material Liangzhuang Mine Daliu Mine Jiahe Mine Material Coal Gangue Coal Gangue Coal Gangue Hardness coefficient 1.14 3.27 1.54 3.82 2.65 6.57 2.2.2 Method At present, research into rock fragmentation con- sist largely of experiments, both domestically and elsewhere, in direct crushing mechanism of single blocks of ...

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2019-8-21 · The hammer crusher can crush coal gangue into required size. A sand maker can also be configured to produce sand. It has also been promoted in the market by utilizing coal gangue to make bricks. First Stage Coarse crushing: the raw materials of coal gangue are firstly fed by the vibrating feeder into hammer crusher for primary crushing.

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Effect of Physical and Chemical Properties of Coal Gangue ...

2020-4-30 · The compressive strength is higher in the coal gangue with low water absorption, high apparent density, and low crushing index. The coal gangue with more SiO 2 content is more suitable to produce concrete aggregate. With the increase of replacement ratio of coal gangue coarse aggregate, the compressive strength of CGC decreases obviously, while ...

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Particle-Crushing Characteristics and Acoustic-Emission ...

Particle-Crushing Characteristics and Acoustic-Emission Patterns of Crushing Gangue Backfilling Material under Cyclic Loading Junmeng Li, Yanli Huang, Zhongwei Chen, Meng Li, Ming Qiao, ... State Key Laboratory of Coal Resources and Safe Mining, School of Mines, China University of Mining & Technology, Xuzhou 221116, China

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Experimental study on the fractal characteristics of ...

2013-7-15 · Source: Journal of China Coal Society, Volume 38, Number 6, 15 July 2013, pp. 1089-1094 (6) To calculate the distribution of particle size of crushing coal and ganguea mathematical model was built according to fractal theory additiona comparison was made between Weibull distribution and fractal distributionin order to ascertain the ...

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Particle-Crushing Characteristics and Acoustic

2018-6-7 · Abstract:In solid backfilling coal mining (SBCM), the crushed gangue backfilling material (CGBM) is generally compacted circularly by a compaction machine in order to reduce its compressibility. In this cyclic compaction process, the particles are crushed, which has a significant effect on the deformation resistance of CGBM.

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Recent Patents on Roll Crushing Mills for Selective ...

Recent Patents on Roll Crushing Mills for Selective Crushing of Coal and Gangue. Background: Gangue is the concomitant product of coal mining. The traditional approach for gangue treatment is to transport it from underground to ground level to accumulate and form gangue hills. Objective: On the basis of summarizing previous research results ...

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Utilization of coal gangue as coarse aggregates in ...

2021-1-25 · In China, coal gangue accounting for 1/10, even 1/5 of coal production, is one of the major industrial and mineral residues. The stock of coal gangue in China has reached a billion level, with an increasing rate of 150–200 million per year, . How to utilize the stacked coal gangue is a serious topic in mining industry and construction industry.

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Micro‐pore structure characteristics and …

Coal gangue ceramsite is processed from coal gangue produced in a coal mine in the Shenmu area (Shaanxi province, China), with a particle size of 4–8 mm, the apparent density of 1650 kg m−3, the water absorption rate of 6.68%, and crushing index of 20.8%. The chemical composition of coal gangue

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Preparation and Properties of Porous Mullite Refractory ...

2015-6-1 · Porous mullite refractory aggregates were successfully fabricated via recycling of coal gangue and bauxite at temperatures ranging from 1100 to 1350°C, with chaff as the pore former. The phase compositions, microstructures, pore characterization, and cold crushing strength of the aggregates were systematically studied by means of X-ray diffraction (XRD), scanning electron microscopy (SEM ...

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