Impact attrition of spray-dried burkeite particles
Also materials such as sodium chloride crystals [29], sand [30], and detergents [16] have been tested in this way. Tomas et al. [31] and Khanal et al. [32] have used the approach for impact testing of large concrete balls. Ghadiri and co-workers have developed an impact tester to study the breakage of particles [15], [29].
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Particle Breakage, Volume 12
Analysis of milling and the role of feed properties (Mojtaba Ghadiri et al.).III. Modelling15. Monte Carlo method for the analysis of particle breakage (B.K. Mishra).16. Numerical investigation of particle breakage as applied to mechanical crushing (C.A.Tang, H.Y. Liu).17.
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Correlating common breakage modes with impact breakage …
DOI: 10.1016/j.ijmst.2020.03.017 Corpus ID: 216257972; Correlating common breakage modes with impact breakage and ball milling of cement clinker and chromite @article{Camalan2020CorrelatingCB, title={Correlating common breakage modes with impact breakage and ball milling of cement clinker and chromite}, author={Mahmut Camalan}, …
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Distinct element analysis of attrition of granular solids under …
The side crushing strength (SCS) of single particles is used as the criterion for fragmentation. ... from the surface of colliding IOPs based on the work of Ning and Ghadiri (2006). Ning and ...
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A breakage model for particulate solids under impact loading
A theoretical model for chipping of semi-brittle particulate solids was proposed by Ghadiri and Zhang [24] and an approach to predict milling behaviour was developed on the …
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Deformation of 3D printed agglomerates: Multiscale …
Discrete Element Method (DEM) is then employed to simulate the agglomerate crushing process. ... the effects of several influential factors including impact conditions, structure, shape and surface energy have been analysed (Liu et al., 2010, Mishra and Thornton, 2001, Thornton et al., 2004, Thornton and Liu, 2004, Thornton et al., 1996 ...
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Impact attrition of spray-dried burkeite particles
Impact [13-18], wear [19], side crushing [20-23] and indentation [24] are some of the test methods used for single particles. According to Ghadiri et al. [12], these methods have
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Impact Strength Distribution of Placebo Enzyme Granules
Semantic Scholar extracted view of "Impact Strength Distribution of Placebo Enzyme Granules" by T. Bonakdar et al. ..., title={Impact Strength Distribution of Placebo Enzyme Granules}, author={Tina Bonakdar and Mojtaba Ghadiri and Hossein Ahmadian and Poul Bach}, journal={Powder Technology}, year={2015}, volume={285}, pages={68-73}, url={https ...
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(PDF) Distinct element simulation of impact breakage of …
In combination with Δ, a dimensionless number relating incident kinetic energy to agglomerate strength (Moreno‐Atanasio and Ghadiri M, Chem Eng Sci. 2006;61(8):2476–2481), a good description of the agglomerate impact is obtained.
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Mechanistic analysis and computer simulation of impact breakage of
We have developed models of impact breakage accounting for material mechanical properties and have also analysed particle breakage under bulk shear straining of particles.
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Triboelectrification of pharmaceutical powders by particle impact
2007 Apr 4;334(1-2):149-55. doi: 10.1016/j.ijpharm.2006.11.005. Epub 2006 Nov 3. ... Mojtaba Ghadiri, Tatsushi Matsuyama, Yu Long Ding, Kendal G Pitt, Hiroyuki Maruyama, Shuji Matsusaka, Hiroaki Masuda. Affiliation 1 Institute of Particle Science and Engineering ... This is found to be independent of impact velocity and angle, and is hence ...
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Observations on impact attrition of granular solids
Semantic Scholar extracted view of "Observations on impact attrition of granular solids" by K. Yuregir et al.
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Impact Attrition of Particulate solids | International Fine …
Observations of the impact damage by high-speed photography showed that attrition was caused by chipping of comers and/or edges adjacent to the impact site at low impact velocities, and by …
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Numerical Simulations | Ghadiri Research Group
In this section. Overview; Particle Characterisation. Overview; Measurement of Adhesion Force Between Particles by the Drop Test Method; Molecular and Structural Design of Nano-Assemblies for Controlled Release: Part A - Production and Characterisation of Nano-assemblies
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Particle Impact Breakage | Request PDF
Generally, increasing the strain rate can transform the failure mode from semi-brittle to brittle mode. The mode of failure is also particle size dependent, where the failure …
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® NP Series™ impact crushers
® NP Series™ horizontal shaft impact (HSI) crushers are known for high reduction ratios when processing all type materials. They deliver unbeatable performance in primary, secondary and tertiary crushing in aggregates production, mining …
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Mechanistic analysis and computer simulation of impact …
In this paper, the prototypical process of the normal impact of dense agglomerates is investigated using the discrete element method-boundary element method coupled …
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Mechanistic analysis and computer simulation of impact …
Moreno-Atanasio, R. and Ghadiri, M. (2006) Mechanistic analysis and computer simulation of impact breakage of agglomerates: Effect of surface energy. Chemical Engineering Science, 61 (8). pp. 2476-2481..
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IMPACT CRUSHERS
IMPACTORS FOR SECONDARY AND HARD ROCK CRUSHING . HAZEMAG Impactors for Secondary Crushing applications embody a combination of modern equipment design, highly developed hydraulics, and the latest control systems. ... whatever the primary crushing application may be: stationary, semi-mobile, mobile. HAZEMAG impact crushers can handle individual ...
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Assessment of impact breakage of carbamazepine …
15 (Ghadiri, 2006). Breakage of materials failing in the brittle mode is commonly analysed using 16 Weibull probability distribution (Weibull, 1951), where the breakage probability is related to ... The mechanistic model of particle impact breakage of Ghadiri and . 5 1 Zhang (2002) is used in this work to analyse the breakage.
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Modelling of auto-agglomeration of cohesive powders
The number of bonds and particles in the agglomerate can be related to the coordination number Z (Moreno-Atanasio and Ghadiri, 2006): (2) Z = N b 2 N p The coordination number can also be related to the agglomerate solid fraction by the empirical equation ( Nakagani and Sunada, 1968 ): (3) Z = α ( 1 − ϕ ) n with α = 1.61 and n = 1.48.
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Prediction of attrition in agitated particle beds
Neil and Bridgwater (1994) and Ghadiri et al. (2000) found that the relative influence of strain and stress is better described by (7) W = k N ⋅ [(σ σ S C S) ⋅ Γ φ] β where σ SCS is the side-crushing strength of the material, k N is the proportionality constant, β is the power index and φ expresses the relative influence of strain ...
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Breakage of fractal agglomerates
In previous literature, the breakage behavior of agglomerates resulting from impact has been comprehensively investigated with the focus on the effect of impact velocity, impact angle, and surface energy (Kafui and Thornton, 2000, Mishra and Thornton, 2001, Moreno-Atanasio and Ghadiri, 2006, Samimi et al., 2004, Thornton et al., 1996, Thornton ...
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Impact attrition of spray-dried burkeite particles
Ghadiri and co-workers have developed an impact tester to study the breakage of particles ... Chem. Eng. Process., 45 (10) (2006), pp. 838-856. View PDF View article View in Scopus Google Scholar [18] H. Kalman. Particle breakage and attrition. ... Impact crushing of concrete for liberation and recycling. Powder Technol., 105 (1999), ...
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Mechanistic Analysis and Computer Simulation of Impact …
Moreno-Atanasio and Ghadiri (2006) proposed a simple mechanistic model that relates the number of broken contacts in an agglomerate due to impact velocity, interparticle …
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Mechanistic Analysis and Computer Simulation of Impact Breakage …
Moreno-Atanasio and Ghadiri (2006) proposed a simple mechanistic model that relates the number of broken contacts in an agglomerate due to impact velocity, interparticle adhesion energy and ...
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Numerical simulations of impact breakage of a spherical …
A numerical study of the micromechanics of impact of a sub-millimetre sized crystalline agglomerate with a target wall has been carried out using granular dynamics (or discrete element) simulations.
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Crushing Strength
Elasticity in Wood and Concrete: Hygromechanical Effects. J. Brauns, K. Rocens, in Encyclopedia of Materials: Science and Technology, 2001 2.4 Hygroexpansion and Mechanical Stress. Materials swell to an extent that depends on the environmental conditions. One should expect, therefore, that elements restrained from swelling should exert a stress in the direction in which …
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Impact attrition of particulate solids. Part 2: Experimental work
The crushing work exceeds the transport work and even reaches 13.96 times of the transport work. How to provide such an enormous crushing work is an energy-limiting factor for the outburst in intact coal. The strain energy is needed for the crushing work, and the required minimum stress is over 54.35 MPa, even reaching 300.44 MPa.
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