crushed coal particle size
Effect of particle size on re-crushing characteristics of crushed coal
2022年7月1日Crushed coal is enclosed in a self-designed steel cylinder. The charging height and internal diameters of the cylinder are 0.29 and 0.14 m, respectively. A loading piston is used to deliver axial stress from the testing press. The steel cylinder provides a
进一步探索Study of the internal re-breaking characteristics of brokeIEEE Transactions on Instrumentation and MeasuremenIEEE Sensors Journal IEEE XploreJournal of Sensors HindawiIEEE Sensors Council Biweekly Scientific Journal根据热度为您推荐•反馈
Experimental study on the permeability of crushed coal medium
2021年11月29日In this test, the coal blocks were taken from Heyang coal mine, and the coal crystals of different grain sizes (including four grain sizes 0.5 mm, 1.0 mm, 1.5 mm,
Float-Sink (Washability) Test, Coal Analysis, Kentucky Geological
2023年1月5日Coal has relatively low density or specific gravity (1.2 to 1.5) compared to other rocks such as shale (2.4 to 2.8) or minerals such as pyrite (4.9 to 5.2). Hence, float-sink analyses are usually run in liquids
Effect of particle size on re-crushing characteristics of crushed
2022年6月1日A larger particle deforms more easily and results in more AE counts and energy under the same compression; 2) crushed coal exhibits layered re-crushing
Research on Particle Size and Energy Consumption Law of Hard
2023年2月5日The dynamic uniaxial compression test adopted cylinder standard specimens that were 50 mm in size and 25 mm in diameter and height. These
Standard method of sieve analysis of crushed bituminous coal
A sieve method of analysis for determining the particle size of crushed bituminous coal is described. The method is applicable to coal less than 1/sup 1///sub 2/ in. (38.1 mm) in
Study on the distribution pattern of particle re-crushing in the
2022年1月18日Considering that crushed coal and rock masses can deform in the pressure-bearing process, large particles can experience cracking, crushing, grinding
Effect of particle size on re-crushing characteristics of crushed coal
2022年6月1日DOI: 10.1016/j.powtec.2022.117675 Corpus ID: ; Effect of particle size on re-crushing characteristics of crushed coal during axial loading
Research on Energy Dissipation Laws of Coal
2021年6月21日The fractal model and crushed coal particle size distribution data fitted, and a kinetic equation was formulated to describe the particle size distribution for two types of coal . The effect of impact
Experimental study on particle size distribution of impact crushed coal
2022年10月1日Five standard screens with apertures of 3 mm, 1 mm, 0.25 mm, 0.2 mm, and 0.074 mm were used to screen the crushed coal samples. The coal samples with the particle size of 1 ∼ 3 mm were used as coal particles containing gas in the crushing experiment [34].
Research on Particle Size and Energy Consumption Law of Hard Coal
2023年2月5日To study the particle size distribution and energy variation law of hard coal under a load, an impact compression test of hard coal specimens under different impact loading conditions was carried out using a Φ50 mm diameter Separate Hopkinson Press Bar (SHPB) test system. We implemented the theory of dynamic impact energy of rock to
Re-crushing process and non-Darcian seepage characteristics of
2021年5月31日According to the rock mechanics test requirements, that is, the ratio of the sample diameter D to the maximum particle diameter d should satisfy D/d ≥ 5, so the maximum particle size of this
Effect of particle size on re-crushing characteristics of crushed coal
2022年6月1日The 15-20 mm particle size of broken rock is constant during the process of bearing deformation test, at the end of test, the content of broken rock (particle size is smaller than 15 mm) increases
Standard method of sieve analysis of crushed bituminous coal
Square-hole sieves of the following sizes are used: 3.35 mm, 4.75 mm, 6.7 mm, 9.5 mm, 13.2 mm. 19.0 mm, and 26.5 mm. Detailed instructions are given for the collection of the gross sample and preparation of the laboratory sample. Publication Date: Sat Jan 01 00:00:00 EST 1977 OSTI Identifier: Resource Type: Journal Article Journal Name:
Study on the distribution pattern of particle re-crushing in
where d is the particle size of the broken coal gangue, mm; D is the largest particle size of the broken gangue, mm; M d is the mass of broken gangue in the rock sample with a particle size smaller than or equal to d, g; M t is the total mass of broken gangue in the sample, g; and n is the Talbol power exponent. 2.2 Test procedure The above crushed
Influence of coal particle size on coal adsorption and
Influence of coal particle size on coal adsorption and desorption characteristics Lei Zhang China University of Mining and Technology Naj Aziz they confirmed the that the crushed size fraction has a more rapid methane uptake and reaches equilibrium more quickly than their solid samples, the similar relationship was reported by Perkins and
Drop-weight impact fragmentation of gas-containing coal particles
We found that the Fractal particle size distribution model can most effectively describe the crushed coal particle sizes. The equilibrium pressure and type of gas can influence the Fractal distribution parameter. The crushing energy is composed of energy to create new surfaces and other forms of energy that are dissipated but the equilibrium
Particle size distribution of coal and gangue after impact-crush
2017年7月9日The experimental results indicate that the Rosin-Rammler distribution could accurately describe the particle size distribution of broken coal and gangue under different impact velocities, and there is a minimum overlap region when the impact velocity is 12.10 m/s which leads to the minimum mixed degree of coal and gangue, and consequently the
Influence of mechanical grinding on characterization of
2021年5月1日The difference of total pore volume (TPV, by N 2 adsorption) between coal chunks and crushed coal indicates that the volume increases of 1–50 nm pores due to decreasing particle size gradually decreased with the increase of deformation degree (Fig. 5 ). Fig. 5 Pore volume increases caused by grinding in primary structure coals and
Research on Energy Dissipation Laws of Coal
2021年6月21日The fractal model and crushed coal particle size distribution data fitted, and a kinetic equation was formulated to describe the particle size distribution for two types of coal . The effect of impact
Research on Particle Size and Energy Consumption Law of Hard Coal
2023年2月5日The dynamic uniaxial compression test adopted cylinder standard specimens that were 50 mm in size and 25 mm in diameter and height. These specimens are made of coal sourced from the 20,303 fully mechanized mining face of Yanghupan Coal Mine in Yulin City through coring, cutting, and grinding.
Re-crushing process and non-Darcian seepage characteristics of
2021年5月31日According to the rock mechanics test requirements, that is, the ratio of the sample diameter D to the maximum particle diameter d should satisfy D/d ≥ 5, so the maximum particle size of this
Simulation experimental investigations on particle breakage
2023年3月5日According to Tyler and Wheatcraft assumptions [44], the fractal relationship between the mass and particle size of crushed gangue can be obtained, Effect of particle size on the energy evolution of crushed waste rock in coal mines. Rock Mech Rock Eng, 50 (5) (2017), pp. 1347-1354, 10.1007/s00603-016-1151-5. View in Scopus
Effect of particle size on re-crushing characteristics of crushed coal
2022年6月1日The 15-20 mm particle size of broken rock is constant during the process of bearing deformation test, at the end of test, the content of broken rock (particle size is smaller than 15 mm) increases
Influence of coal particle size on coal adsorption and
Influence of coal particle size on coal adsorption and desorption characteristics Lei Zhang China University of Mining and Technology Naj Aziz they confirmed the that the crushed size fraction has a more rapid methane uptake and reaches equilibrium more quickly than their solid samples, the similar relationship was reported by Perkins and
Particle size distribution of coal and gangue after impact-crush
2017年7月9日The broken coal and gangue particles were collected and screened by different size meshes. The particle size distributions of coal and gangue under different impact velocities were researched according to the Rosin-Rammler distribution. The relationships between View on Springer Save to Library Create Alert Cite 25 Citations
Study on the distribution pattern of particle re-crushing in
where d is the particle size of the broken coal gangue, mm; D is the largest particle size of the broken gangue, mm; M d is the mass of broken gangue in the rock sample with a particle size smaller than or equal to d, g; M t is the total mass of broken gangue in the sample, g; and n is the Talbol power exponent. 2.2 Test procedure The above crushed
Drop-weight impact fragmentation of gas-containing coal particles
We found that the Fractal particle size distribution model can most effectively describe the crushed coal particle sizes. The equilibrium pressure and type of gas can influence the Fractal distribution parameter. The crushing energy is composed of energy to create new surfaces and other forms of energy that are dissipated but the equilibrium
Influence of mechanical grinding on characterization of
2021年5月1日The difference of total pore volume (TPV, by N 2 adsorption) between coal chunks and crushed coal indicates that the volume increases of 1–50 nm pores due to decreasing particle size gradually decreased with the increase of deformation degree (Fig. 5 ). Fig. 5 Pore volume increases caused by grinding in primary structure coals and
Frontiers Research on key parameters of pipeline transportation
As the key link of coal gangue slurry filling, slurry pipeline transportation is an important guarantee to realize the slurry mixing and safe transportation of gangue from solid powder. The experimental results show that the gangue powder crushed using a cage crusher can be made into stable slurry when the particle grading size is the
Breakage law and fractal characteristics of broken coal and rock
2019年3月25日Before conducting the compaction test, the volumetric ratio of coal and sandstone was 1:1, with the particle size of 6.8-10.2 mm. After carrying out the compaction test, the sandstone particles with the particle size of 6.8-10.2 mm were significantly more than the coal particles with the same particle size in the mixed particles.
Experimental study on the permeability of crushed coal medium
2021年11月29日In this test, the coal blocks were taken from Heyang coal mine, and the coal crystals of different grain sizes (including four grain sizes 0.5 mm, 1.0 mm, 1.5 mm,
Float-Sink (Washability) Test, Coal Analysis, Kentucky Geological
2023年1月5日Coal has relatively low density or specific gravity (1.2 to 1.5) compared to other rocks such as shale (2.4 to 2.8) or minerals such as pyrite (4.9 to 5.2). Hence, float-sink analyses are usually run in liquids
Effect of particle size on re-crushing characteristics of crushed
2022年6月1日A larger particle deforms more easily and results in more AE counts and energy under the same compression; 2) crushed coal exhibits layered re-crushing
Research on Particle Size and Energy Consumption Law of Hard
2023年2月5日The dynamic uniaxial compression test adopted cylinder standard specimens that were 50 mm in size and 25 mm in diameter and height. These
Standard method of sieve analysis of crushed bituminous coal
A sieve method of analysis for determining the particle size of crushed bituminous coal is described. The method is applicable to coal less than 1/sup 1///sub 2/ in. (38.1 mm) in
Study on the distribution pattern of particle re-crushing in the
2022年1月18日Considering that crushed coal and rock masses can deform in the pressure-bearing process, large particles can experience cracking, crushing, grinding
Effect of particle size on re-crushing characteristics of crushed coal
2022年6月1日DOI: 10.1016/j.powtec.2022.117675 Corpus ID: ; Effect of particle size on re-crushing characteristics of crushed coal during axial loading
Research on Energy Dissipation Laws of Coal
2021年6月21日The fractal model and crushed coal particle size distribution data fitted, and a kinetic equation was formulated to describe the particle size distribution for two types of coal . The effect of impact
Experimental study on particle size distribution of impact crushed coal
2022年10月1日Five standard screens with apertures of 3 mm, 1 mm, 0.25 mm, 0.2 mm, and 0.074 mm were used to screen the crushed coal samples. The coal samples with the particle size of 1 ∼ 3 mm were used as coal particles containing gas in the crushing experiment [34].
Research on Particle Size and Energy Consumption Law of Hard Coal
2023年2月5日To study the particle size distribution and energy variation law of hard coal under a load, an impact compression test of hard coal specimens under different impact loading conditions was carried out using a Φ50 mm diameter Separate Hopkinson Press Bar (SHPB) test system. We implemented the theory of dynamic impact energy of rock to
Re-crushing process and non-Darcian seepage characteristics of
2021年5月31日According to the rock mechanics test requirements, that is, the ratio of the sample diameter D to the maximum particle diameter d should satisfy D/d ≥ 5, so the maximum particle size of this
Effect of particle size on re-crushing characteristics of crushed coal
2022年6月1日The 15-20 mm particle size of broken rock is constant during the process of bearing deformation test, at the end of test, the content of broken rock (particle size is smaller than 15 mm) increases
Standard method of sieve analysis of crushed bituminous coal
Square-hole sieves of the following sizes are used: 3.35 mm, 4.75 mm, 6.7 mm, 9.5 mm, 13.2 mm. 19.0 mm, and 26.5 mm. Detailed instructions are given for the collection of the gross sample and preparation of the laboratory sample. Publication Date: Sat Jan 01 00:00:00 EST 1977 OSTI Identifier: Resource Type: Journal Article Journal Name:
Study on the distribution pattern of particle re-crushing in
where d is the particle size of the broken coal gangue, mm; D is the largest particle size of the broken gangue, mm; M d is the mass of broken gangue in the rock sample with a particle size smaller than or equal to d, g; M t is the total mass of broken gangue in the sample, g; and n is the Talbol power exponent. 2.2 Test procedure The above crushed
Influence of coal particle size on coal adsorption and
Influence of coal particle size on coal adsorption and desorption characteristics Lei Zhang China University of Mining and Technology Naj Aziz they confirmed the that the crushed size fraction has a more rapid methane uptake and reaches equilibrium more quickly than their solid samples, the similar relationship was reported by Perkins and
Drop-weight impact fragmentation of gas-containing coal particles
We found that the Fractal particle size distribution model can most effectively describe the crushed coal particle sizes. The equilibrium pressure and type of gas can influence the Fractal distribution parameter. The crushing energy is composed of energy to create new surfaces and other forms of energy that are dissipated but the equilibrium
Particle size distribution of coal and gangue after impact-crush
2017年7月9日The experimental results indicate that the Rosin-Rammler distribution could accurately describe the particle size distribution of broken coal and gangue under different impact velocities, and there is a minimum overlap region when the impact velocity is 12.10 m/s which leads to the minimum mixed degree of coal and gangue, and consequently the
Influence of mechanical grinding on characterization of
2021年5月1日The difference of total pore volume (TPV, by N 2 adsorption) between coal chunks and crushed coal indicates that the volume increases of 1–50 nm pores due to decreasing particle size gradually decreased with the increase of deformation degree (Fig. 5 ). Fig. 5 Pore volume increases caused by grinding in primary structure coals and
Research on Energy Dissipation Laws of Coal
2021年6月21日The fractal model and crushed coal particle size distribution data fitted, and a kinetic equation was formulated to describe the particle size distribution for two types of coal . The effect of impact
Research on Particle Size and Energy Consumption Law of Hard Coal
2023年2月5日The dynamic uniaxial compression test adopted cylinder standard specimens that were 50 mm in size and 25 mm in diameter and height. These specimens are made of coal sourced from the 20,303 fully mechanized mining face of Yanghupan Coal Mine in Yulin City through coring, cutting, and grinding.
Re-crushing process and non-Darcian seepage characteristics of
2021年5月31日According to the rock mechanics test requirements, that is, the ratio of the sample diameter D to the maximum particle diameter d should satisfy D/d ≥ 5, so the maximum particle size of this
Simulation experimental investigations on particle breakage
2023年3月5日According to Tyler and Wheatcraft assumptions [44], the fractal relationship between the mass and particle size of crushed gangue can be obtained, Effect of particle size on the energy evolution of crushed waste rock in coal mines. Rock Mech Rock Eng, 50 (5) (2017), pp. 1347-1354, 10.1007/s00603-016-1151-5. View in Scopus
Effect of particle size on re-crushing characteristics of crushed coal
2022年6月1日The 15-20 mm particle size of broken rock is constant during the process of bearing deformation test, at the end of test, the content of broken rock (particle size is smaller than 15 mm) increases
Influence of coal particle size on coal adsorption and
Influence of coal particle size on coal adsorption and desorption characteristics Lei Zhang China University of Mining and Technology Naj Aziz they confirmed the that the crushed size fraction has a more rapid methane uptake and reaches equilibrium more quickly than their solid samples, the similar relationship was reported by Perkins and
Particle size distribution of coal and gangue after impact-crush
2017年7月9日The broken coal and gangue particles were collected and screened by different size meshes. The particle size distributions of coal and gangue under different impact velocities were researched according to the Rosin-Rammler distribution. The relationships between View on Springer Save to Library Create Alert Cite 25 Citations
Study on the distribution pattern of particle re-crushing in
where d is the particle size of the broken coal gangue, mm; D is the largest particle size of the broken gangue, mm; M d is the mass of broken gangue in the rock sample with a particle size smaller than or equal to d, g; M t is the total mass of broken gangue in the sample, g; and n is the Talbol power exponent. 2.2 Test procedure The above crushed
Drop-weight impact fragmentation of gas-containing coal particles
We found that the Fractal particle size distribution model can most effectively describe the crushed coal particle sizes. The equilibrium pressure and type of gas can influence the Fractal distribution parameter. The crushing energy is composed of energy to create new surfaces and other forms of energy that are dissipated but the equilibrium
Influence of mechanical grinding on characterization of
2021年5月1日The difference of total pore volume (TPV, by N 2 adsorption) between coal chunks and crushed coal indicates that the volume increases of 1–50 nm pores due to decreasing particle size gradually decreased with the increase of deformation degree (Fig. 5 ). Fig. 5 Pore volume increases caused by grinding in primary structure coals and
Frontiers Research on key parameters of pipeline transportation
As the key link of coal gangue slurry filling, slurry pipeline transportation is an important guarantee to realize the slurry mixing and safe transportation of gangue from solid powder. The experimental results show that the gangue powder crushed using a cage crusher can be made into stable slurry when the particle grading size is the
Breakage law and fractal characteristics of broken coal and rock
2019年3月25日Before conducting the compaction test, the volumetric ratio of coal and sandstone was 1:1, with the particle size of 6.8-10.2 mm. After carrying out the compaction test, the sandstone particles with the particle size of 6.8-10.2 mm were significantly more than the coal particles with the same particle size in the mixed particles.