MTW European Type Trapezium Mill
Input size:30-50mm
Capacity: 3-50t/h
LM Vertical Roller Mill
Input size:38-65mm
Capacity: 13-70t/h
Raymond Mill
Input size:20-30mm
Capacity: 0.8-9.5t/h
Sand powder vertical mill
Input size:30-55mm
Capacity: 30-900t/h
LUM series superfine vertical roller grinding mill
Input size:10-20mm
Capacity: 5-18t/h
MW Micro Powder Mill
Input size:≤20mm
Capacity: 0.5-12t/h
LM Vertical Slag Mill
Input size:38-65mm
Capacity: 7-100t/h
LM Vertical Coal Mill
Input size:≤50mm
Capacity: 5-100t/h
TGM Trapezium Mill
Input size:25-40mm
Capacity: 3-36t/h
MB5X Pendulum Roller Grinding Mill
Input size:25-55mm
Capacity: 4-100t/h
Straight-Through Centrifugal Mill
Input size:30-40mm
Capacity: 15-45t/h
Schist low strength crushing
Study of the behaviour of schist grains under crushing
Hand specimens indicated the samples were homogeneous and the different schists could be identified by their colour (Alkama 2003): brown (clayey schist), black mottled (sericitoschist) and black with greenish tint (mottled/spotted schist) The results of the thin section analyses are given in Tables 1, 2, 3 The petrographic study 展开2024年10月8日 Specimens with a schistosity angle of 0° or 90° exhibit higher dynamic compressive strength under dynamic loading, with axial splitting and schistosity splitting as Study on Dynamic Mechanical Properties and Failure Pattern of 2021年11月13日 By performing the comparative analysis of the pomegranate biotite schist, a reasonable strain rate range of 7875 s1~8251 s1 and a reasonable crushing energy Study on the Fractal Characteristics of the Pomegranate Biotite 2021年11月13日 By performing the comparative analysis of the pomegranate biotite schist, a reasonable strain rate range of 7875 s 1 ~8251 s 1 and a reasonable crushing energy Study on the Fractal Characteristics of the Pomegranate Biotite
Improvement of the selective comminution of a lowgrade schist
2018年9月17日 In this study, the EPF technology was applied to a lowgrade schist ore containing cassiterite, in order to investigate its influence on the selectivity of the fragmentation2024年1月1日 Considering the “soft” and “fractured” geological features of chlorite schist in the Lianchengshan Tunnel, a multilayered and staged support system is developed with A rational construction method and deformation control system of PF technology was applied to a lowgrade schist ore containing cassiterite, in order to investigate its influence on the selectivity of the fragmentation The impact of EPF on subsequentIMPROVEMENT OF THE SELECTIVE COMMINUTION OF A LOW 2021年9月25日 Energy evolution curves can be used to quickly and accurately determine the CCS of specimens, including the initiation, closure, and damage strength of cracks This Effect of loading direction on the critical characteristic strength
Experimental Study on Dynamic Mechanical Properties of
2012年4月1日 In order to investigate rock dynamic mechanical properties of amphibolites, sericitequartz schist and sandstone under the different strain rates varying from 30 s1 to 150 2021年1月3日 For low shear stresses, crushing is limited to angularities and crumbling in the form of flaking at the grain contact zones The crushing of the grains increases with increasing Statistical study of the crushing of limestone grains under shearing 2018年9月17日 Electric pulse fragmentation (EPF) is an innovative technology that uses highvoltage pulsed power (HVPP) for the selective comminution of the treated materialImprovement of the selective comminution of a lowgrade schist 32 Analysis of Dynamic Strength Characteristics The test results showed that the dynamic compressive strength of the pomegranate biotite schist was significantly affected by the strain rate As shown in Figure 4, the dynamic compressive strength of the rock increased from 15020MPa to 20906MPa as the strain rate increased from approximatelyStudy on the Fractal Characteristics of the Pomegranate Biotite Schist
Which Crusher Is Suitable for Your Hard Rock? Fote
2023年2月15日 Soft rock has a low uniaxial compressive strength of less than 30MPa It mainly includes phyllite, schist, mudstone, slate, tuff, and marble rock 3 Extremely soft rock Extremely soft rock has a very low uniaxial compressive 2011年8月1日 Quartz mica schist, which is a highly anisotropic metamorphic rock, usually presents a geotechnical challenge in construction projects To ensure a safe and economical design, a comprehensive in Engineering properties of quartz mica schist ResearchGate2019年11月1日 The schist rocks usually have a high level of openness along their schistosity, foliation, and crushing Intact schist is usually created under deep, highpressure, Also, the behavior of schist is transformed from a brittle state with high strength to a Assessing the effect of freezingthawing cycles on the results of 2020年11月1日 The stressstrain relationship, shear strength behavior and the influence of water on strength and deformation under low confining pressures are analyzed detailedly via largescale triaxial test(PDF) Study of Sericite Quartz Schist CoarseGrained Soil by Large
Strength Control Factors of Chlorite Schist under Schistose IIETA
2020年5月5日 The main results are as follows: Chlorite schist is a lowanisotropy rock mass, whose compressive strength exhibited a Vshaped trend with the growing bedding angle; the schistose structure is the internal cause of the deformation and the anisotropic or transversely isotropic strength of the schist; the schistose structure is reshaped and 2015年7月1日 where I s is the uncorrelated point load strength, P is the peak load, D e is the equivalent core diameter, F is the size correction factor, and A is the minimum crosssectional area of the fracture plane A minimum of eight valid point load tests were performed in each loading direction, and the mean values were calculated The point load strength I s (50) in the Using the Point Load Test to Analyze the Strength Anisotropy of 2012年4月1日 In order to investigate rock dynamic mechanical properties of amphibolites, sericitequartz schist and sandstone under the different strain rates varying from 30 s 1 to 150 s 1 , the specimens were subjected to axial impact at different projectile speeds by using the split Hopkinson pressure bar (SHPB) of 100 mm in diameter The optimal experimental size of rock Experimental Study on Dynamic Mechanical Properties of Amphibolites permeability of the mica schist varied by up to 50 000 times depending on the direction of flow Crystalline, compact and indurated rocks such as granite, basalt, schist and crystalline limestone usually exhibit low permeabilities under laboratory conditions, yet 4 resistance Rock strength and Springer
Study of the behaviour of schist grains under crushing
2008年5月1日 The particlecrushing property of the decomposed granite soil examined in this study is compared with that of a sand under high pressures (Miura et ah, 1977), and it is concluded that the particle SchistVariation in StrengthA Case Study Sukhdev Singh P S K Murthy ScientistC ScientistC It shows that GMS1 failed at very low strengths compared to GMS2 (around 15%) Figure 1(a) and 1(b) shows failure pattern of the tested samples for GMS1 and GMS2 respectively And figure 5(c) shows the variation of SchistVariation in StrengthA Case StudySchist is a foliated metamorphic rock made up of plateshaped mineral grains that are large enough to see with an unaided eye Its abundant mica grains and its schistosity make it a rock of low physical strength, usually unsuitable for use Schist: Metamorphic Rock Pictures, Definition2023年9月16日 The indirect tension test is an important laboratory test for rock characterization The presence of rock fabric, such as schistosity, complicates the assessment of test results One hundred and fortyfive indirect tension tests were conducted on mica schist specimens to investigate the effect of schistosity orientation on failure mode and tensile strength Tensile Influence of Schistosity Orientation on Failure Mode and Indirect
Shear strengths of mica schist and dry granite as a function of
Shear strengths of mica schist and dry granite as a function of temperature calculated from coe ffi cients for powerlaw behaviour of rheology (Kirby Kronenberg 1987; Shea Kronenberg 1992)2015年6月4日 Estimating compressive strength General rock failure criterion can be reduced to a few parameters dependent on lithology (m) and the uniaxial compressive strength (C 0)Lithology is commonly derived during log analysis, so m may be estimated (Table 1)What is needed still is an initial measure of rock strength provided by C 0 C 0 can be estimated from Compressive strength of rocks PetroWikiRequest PDF On Mar 1, 2020, Yu Song and others published Crushing Behavior and Crushing Strengths of LowDensity Foam Concrete Find, read and cite all the research you need on ResearchGateCrushing Behavior and Crushing Strengths of LowDensity Foam Download scientific diagram Dynamic compressive strength versus strain rate for pomegranate biotite schist from publication: Study on the Fractal Characteristics of the Pomegranate Biotite Dynamic compressive strength versus strain rate for pomegranate
Strength Control Factors of Chlorite Schist under Schistose
schist is a lowanisotropy rock mass, whose compressive strength exhibited a Vshaped trend with the growing bedding angle; the schistose structure is the internal cause of the deformation and the anisotropic or transversely isotropic strength of the schist; the schistose structure is reshaped and further damaged by external factors (eg water 2015年1月21日 Geotechnical study of marble, schist, and granite as dimension stone: The schists show low strength and durability values However, they show good polishing characteristics Schist(PDF) Geotechnical study of marble, schist, and granite as Request PDF On Jul 1, 2015, XiaoPing Zhang and others published Using the Point Load Test to Analyze the Strength Anisotropy of Quartz Mica Schist Along an Exploration Adit Find, read and Using the Point Load Test to Analyze the Strength ResearchGateThe high aggregate impact value for Q1 quartzite of 3637% implies that Q1 is too weak to be used for road surfacing and may affect the compressive strength of concrete negatively The low strength of Q1 quartzite is corroborated by its (PDF) Engineering Geological Characteristics of
Metamorphic Rock Types: Pictures and Descriptions
2019年5月10日 Schist is a metamorphic rock that comes in almost infinite variety, but its main characteristic is hinted at in its name: Schist comes from the ancient Greek for "split," through Latin and French It is formed by dynamic 1975年8月1日 Int, J Rock Mech Min Sci Geomech Abstr Vol 12, pp 219 228 Pergamon Press 1975 Printed in Great Britain High Pressure Shear Strength Investigation of an Anisotropic Mica Schist Rock W MARTIN McCABE* ROBERT M KOERNERt Mica schist of the Wissahickon Formation is tested in tension and compres sion in order to investigate the nature, causes and High pressure shear strength investigation of an anisotropic mica NOTES ABOUT CRUSHING SAND FROM BITUMINOUS SCHIST BY DUMITRUDRAGOS HANGANU* „Gheorghe Asachi” Technical University of Iaşi, Faculty of Civil Engineering and Building Services, Iasi, Romania Received: January 18, 2021 Accepted for publication: March 28, 2021 Abstract People have used sand and stone for foundations for thousands of yearsNOTES ABOUT CRUSHING SAND FROM BITUMINOUS SCHISTP80 (mm) P50 (mm) Schist ore before treatment 310 213 Sample after EPF preconcentration test (Test 1 – discharged energy: 65 kWh/t) 150 84 Sample after EPF crushing test (Test 2 – discharged energy: 125 kWh/t) 110 50 Conventional crushing 138 105 Fig 9 Particle size distribution for the observation range 0–1 mm of the fragments after the two EPF tests and Pilotscale investigation of two Electric Pulse Fragmentation (EPF
Engineering properties of quartz mica schist ScienceDirect
2011年8月10日 Out of the three generic categories of rocks, metamorphic rocks usually display the highest degree of anisotropy (Ramamurthy, 1993)Quartz mica schist, which is a common type of metamorphic rock, has a widespread distribution in the world, including Scottish Highlands, Norway, Sweden, China, India, Bohemia, Saxony, Brittany, the Alps, Himalayas, geological strength index (GSI) classification for very weak and sheared rock masses The case of the Athens Schist Formation E Hoek 7 P Marinos 7 M Benissi AbstractThe Athens Schist Formation includes a wide variety of metasedimentary rocks, varying from strong or medium strong rocks such as sericite metasandstone, limestone, greywacke Applicability of the geological strength index (GSI Rocscience2018年6月1日 In this study, the relationships between the physical and mechanical properties of metamorphic rocks have been investigated based on data that were collected from previous studiesPhysical and Mechanical Properties of Metamorphic Rocks2021年12月8日 (2) The reference value of penetration index of sericite schist (the vertical joint direction) is 390~777 N/mm, and the parallel joint direction is 127~299 N/mm (3) The uniaxial compressive In Situ Needle Penetration Test and Its Application in a Sericite
Mineralogical control on the intact strength of schist
2021年8月1日 Schist is highly variable in terms of intact strength, mineralogical composition and structure due to the provenance of parent rock and metamorphic conditions during formation2011年1月1日 crushing of particles, even for low confining pressures [1] and [14], when the crushing strength decreases to a value lower than the contact for ces among rock fragmentsEvaluation of Rockfill Properties Based on Index 2021年11月13日 As one kind of typical rock in the deep mine roadway envelope, with fractal theory, the fractal evolution of crushed pomegranate biotite schist under impact loading was studied, and the relationship between its fractal dimension and the strain rate, dynamic compressive strength, average block size, and crushing energy dissipation density was also Study on the Fractal Characteristics of the Pomegranate Biotite Schist With the Ten Percent Fines Value and the Aggregate Crushing more than that of other quartzite, schist and gneiss Point load strength index For aggregate 1975 4948 6318 111 55 126 Very low strength High strength Fg2 38 40 39 38 1482 1887 13 6889 4344 094 647 149 High strength Da1 58 55 565 45 Evaluation of strength and durability of rocks from Malekhu
Strength Control Factors of Chlorite Schist under ResearchGate
2020年11月10日 The main results are as follows: Chlorite schist is a lowanisotropy rock mass, whose compressive strength exhibited a Vshaped trend with the growing bedding angle; the schistose structure is the 2016年9月21日 The quality and durability of some marble deposits from Nigeria as construction stones were evaluated Results indicate that the whitishpinkishgreyish marbles were pure to relatively pure (generally ≥85 wt% calcite) and possess geotechnical properties that appeared to be controlled largely by mineralogy and texture While the coarsegrained variety indicated Quality and durability of some marble deposits in the southern schist 2024年1月1日 The physical and mechanical properties of the chlorite schist stratum in the Lianchengshan Tunnel, including high geostress, weak strength, low elastic modulus, and poor water stability, provide the basic material conditions for the breeding and evolution of large deformation, and improper construction methods, ineffective support measures, and A rational construction method and deformation control system of 2024年10月8日 This paper studies the effect of schistosity on the dynamic mechanical properties and failure pattern of thinlayered schist Wudang Group schist with thin layers is selected as the research object, and the influence of the dynamic mechanical properties and failure pattern of schist under different angles and spacing is studied by combining an SHPB Study on Dynamic Mechanical Properties and Failure Pattern of
Effect of strength anisotropy on schist rocks and slope Springer
(shale, schist, etc) according to dierent loading degrees He divided anisotropic rocks into three types as U, shoulder and wavy according to the shapes given by the graphics he obtained from the results of the experiments Maximum strength in Applicability of the geological strength index (GSI) classification for very weak and sheared rock masses The case of the Athens Schist Formation E Hoek 7 P Marinos 7 M Benissi Abstract The Athens Schist Formation includes a wide variety of metasedimentary rocks, varying from strong or medium strong rocks such as sericite metasandstone, limestone, greywacke, sericite (PDF) Applicability of the geological strength index (GSI