The Improved Model of Particle Shape Prediction Considering the Choke-Level Effect for Cone Crusher

2018 ◽  
Author(s):  
Zhang Wei ◽  
Wang Jixin ◽  
Yu Xiangjun
Keyword(s):  
Single Particle ◽  
Performance Optimization ◽  
Particle Shape ◽  
Particle Breakage ◽  
Zone Method ◽  
Shape Prediction ◽  
Cone Crusher ◽  
Motion Characteristics ◽  
Improved Model ◽  
Level Effect

The choke-level is one of the key factors that influence the falling process of the granular materials which is closely related to the crushing efficiency in the cone crusher. In this paper the motion characteristics of the particles near the choke-level have been analyzed and the phenomenon of single particle breakage below the choke level is pointed out. Based on the multi-zone method, an improved particle shape prediction model is established. In this model, the compound breaking behavior which includes the single particle breakage under the choke-level effect and the inter-particles breakage under the fill-feed, the transformation of particle shape and the particle size distribution in each crushing zone are considered. Tests on the PYG-B1735 cone crusher are conducted in order to validate the improved model. The improved model provides a theoretical foundation for the productivity estimation and the performance optimization.

scholarly journals The Improved Motion Model of Particles in the Cone Crusher Considering the Spatial Compound Motion of the Mantle

Minerals ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 16
Author(s):  
Zilong Zhang ◽  
Tingzhi Ren ◽  
Jiayuan Cheng
Keyword(s):  
High Energy ◽  
Central Axis ◽  
Motion Model ◽  
System Transformation ◽  
Productivity Improvement ◽  
Cone Crusher ◽  
Motion Characteristics ◽  
Improved Model ◽  
Free Falling ◽  
Reduced Scale

The cone crusher is the main equipment in the particle crushing process. The productivity of the cone crusher is determined by the motion characteristics of particles passing through the crushing chamber. In order to accurately describe the motion characteristics of the particles, the influence of the spatial compound motion of the mantle rotates around the central axis of the cone crusher and its central axis on the motion characteristics of the particles is investigated, then the improved motion model is established. Through the coordinate system transformation matrix, the motion characteristics of the particles including spatial sliding, free-falling, and spatial compound falling are solved. The applicability and accuracy of the improved model in describing the motion characteristics of the particle were verified through the experiment using a reduced-scale experimental cone crusher to simulate the motion characteristics of the particle. Based on the improved model, the motion characteristics of the particles in the CF11 hydraulic cone crusher can be simulated. With the decrease in height, the motion characteristics of particles gradually change from spatial sliding to spatial compound falling and finally to free-falling. The particles deflect circumferentially around the central axis of the cone crusher. The circumferential deflection of particles is directly related to the motion characteristics including spatial sliding and spatial compound falling. The improved model provides a theoretical basis for the high energy design of the crushing chamber and productivity improvement of the cone crusher.

New developments in cone crusher performance optimization

2009 ◽  
Vol 22 (7-8) ◽  
pp. 613-617 ◽  
Author(s):  
Jens Lichter ◽  
King Lim ◽  
Alex Potapov ◽  
Dean Kaja
Keyword(s):  
Performance Optimization ◽  
New Developments ◽  
Cone Crusher

DEM modelling of non-spherical particle breakage and flow in an industrial scale cone crusher

2015 ◽  
Vol 74 ◽  
pp. 112-122 ◽  
Author(s):  
G.W. Delaney ◽  
R.D. Morrison ◽  
M.D. Sinnott ◽  
S. Cummins ◽  
P.W. Cleary
Keyword(s):  
Spherical Particle ◽  
Particle Breakage ◽  
Industrial Scale ◽  
Cone Crusher

scholarly journals The effect of particle shape on the deformation and stress reduction of a gravel soil due to wetting

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Reza Mahinroosta ◽  
Vahid Oshtaghi
Keyword(s):  
Particle Size ◽  
Shear Stress ◽  
Particle Size Distribution ◽  
Normal Stress ◽  
Size Distribution ◽  
Stress Reduction ◽  
Particle Shape ◽  
Particle Breakage ◽  
Direct Shear ◽  
Particle Shapes

AbstractThis paper investigates the effect of particle shape on the stress reduction and collapse deformation of gravelly soil using a medium-scale direct shear test apparatus under different relative densities, normal stress, and shear stress levels. A new method based on the Micro-Deval test was introduced to produce sub-angular particles from angular particles. Therefore, two series of soil specimens were obtained with the same rock origin, particle size distribution, and relative density but different particle shapes. In addition to traditional direct shear tests on dry and wet specimens, a specific test procedure was applied to explore the stress reduction and collapse of soil specimens due to wetting. The results of the tests, including shear stress–shear displacement and vertical displacement-shear displacement, were compared. The results showed that the stress reduction and settlement due to wetting increased with vertical and shear stress levels in both types of particle shapes, with higher values in angular particle shapes. The particle breakage of the soil specimens was also studied quantitatively using the change in the particle size distribution before and after the test. It was shown that the wetting of the samples had more impact on the particle breakage in angular gravel than sub-angular gravel, which increased linearly with the normal stress.

scholarly journals Development of a More Descriptive Particle Breakage Probability Model

Minerals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 710
Author(s):  
Murray M. Bwalya ◽  
Ngonidzashe Chimwani
Keyword(s):  
Particle Size ◽  
Single Particle ◽  
Energy Input ◽  
Mechanical Characteristics ◽  
Probability Model ◽  
Threshold Energy ◽  
Particle Breakage ◽  
Experimental Results ◽  
Repeated Impacts ◽  
Insight Into

Single-particle breakage test is becoming increasingly popular, as researchers seek to understand fracture response that is purely a function of the material being tested, instead of that which is based on the performance of the comminution device being used. To that end, an empirical breakage probability model that builds on previous work was proposed. The experimental results demonstrate the significance of both energy input and the number of repeated breakage attempts. Four different materials were compared, to gain a better insight into the breakage response. This modelling work goes further from previous research of the authors, by showing that not only does size related threshold energy and repeated impacts characterize particle breakage properties, but each material exhibits unique trends in terms of how its threshold energy and its rate of deterioration varies with particle size and each impact, respectively. This behaviour can be attributed to the different mechanical characteristics of the material and their flaw distribution. The importance of these aspects was highlighted.

Sign in / Sign up

Export Citation Format

Share Document