Results 1 to 10 of about 10,162 (119)

Two-stage method for the simulation of the comminution process in a high-speed beater mill [PDF]

open access: yesE3S Web of Conferences, 2017
The paper presents a two-stage simplified method for the simulation of comminution process which takes place in a beater mill. The first stage of the proposed method is a simulation of the flow of gas and ore particles through a mill based on a two-phase
Marijnissen Michał J.   +2 more
doaj   +2 more sources

Study of Comminution Kinetics in an Electrofragmentation Lab-Scale Device

open access: yesMetals, 2022
A significant challenge in mineral raw materials comminution is the improvement of process energy efficiency. Conventional comminution techniques, although globally used, are far from being considered power-efficient.
Angel R. Llera   +4 more
doaj   +1 more source

Multiple cannulated screw fixation of femoral neck fractures with comminution in young- and middle-aged patients

open access: yesJournal of Orthopaedic Surgery and Research, 2022
Objective To investigate the distribution and influence of comminution in femoral neck fracture (FNF) patients after cannulated screw fixation (CSF). Methods From January 2019 to June 2020, a total of 473 patients aged 23–65 years with FNF treated by CSF
Zhe Han   +9 more
doaj   +1 more source

Truths and misconceptions in the ore comminution [PDF]

open access: yesMining and Metallurgy Engineering Bor, 2016
Inventions and now widely applied machines for ore comminution dated back to the second half of the 19th century. For the past 150 years, much theoretical knowledge was accumulated in the field of physics the solid bodies, physics of fracture, the theory
Magdalinović Nedeljko
doaj   +1 more source

Study of the Effect of the Mineral Feed Size Distribution on a Ball Mill Using Mathematical Modeling [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2021
In this paper, the effect of the feed size distribution was studied for a ball mill. Copper ore of 0.5% was tested using batch-grinding tests. Samples were carried out using three reconstructed feed size distributions in an experimental ball mill.
Israel Rodríguez-Torres   +4 more
doaj   +1 more source

Applications of X-Ray Computed Tomography in Particulate Systems

open access: yesKONA Powder and Particle Journal, 2014
X-ray computed tomography (CT) is an ideal technique for investigating the internal structure of multiphase materials in a noninvasive and nondestructive manner.
C. L. Lin, J. D. Miller, A. Cortes
doaj   +1 more source

An Effective SEM-Based Image Analysis System for Quantitative Mineralogy

open access: yesKONA Powder and Particle Journal, 2014
An effective image-analysis system for use in the study of particulate mineralogical material is described. The available commercial image-processing and image-analysis software systems do not usually include ...
R.P. King, C.L. Schneider
doaj   +1 more source

Ball Charge Dynamics in a Planetary Mill

open access: yesKONA Powder and Particle Journal, 2014
Planetary mills are gaining importance in the area of ultrafine grinding. The charge motion inside the mill is complex and previous works have considered force balance on a single particle for motion analysis.
B.K. Mishra
doaj   +1 more source

Evaluation of Thermally-Assisted Fracture of Particles Using Microscale Fracture Measurements

open access: yesKONA Powder and Particle Journal, 2014
Thermal pretreatment can significantly improve industrial comminution operations by reducing energy requirements. The effect of pretreatment using conventional and dielectric heating followed by quenching on the ...
Luis Marcelo Tavares, R. Peter King
doaj   +1 more source

Particle Size Distribution Models for Metallurgical Coke Grinding Products

open access: yesMetals, 2021
Six different particle size distribution (Gates–Gaudin–Schuhmann (GGS), Rosin–Rammler (RR), Lognormal, Normal, Gamma, and Swebrec) models were compared under different metallurgical coke grinding conditions (ball size and grinding time).
Laura Colorado-Arango   +2 more
doaj   +1 more source

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