Fractal characteristics of ore particle crushing under ultrasonic vibration
YU Cheng
CAI Gaipin
HAO Shuhao
ZHAO Xin
LUO Xiaoyan
Abstract：Taking the wolframite ore as the research object,the ultrasonic vibration loading test was carried out.The particle size distribution curve of the crushed ore was obtained through screening test.The fractal dimension of the particle was calculated and the ore crushing process was quantitatively described by using the fractal dimension.The relationship between the fractal dimension and static load,ultrasonic output power and the average particle size were analyzed.The results show that when the static load increase from 100 N to 500 N,the average particle size decrease from 19.513 2 mm to 5.040 0 mm,and the fractal dimension increase from 1.725 2 to 2.541 9.When the ultrasonic output power increase from 1.56 kW to 2.60 kW,the average particle size decrease from 19.672 9 mm to 5.040 0 mm,and the fractal dimension increase from 1.912 7 to 2.541 9.Fractal dimension has a good linear correlation with static load,ultrasonic output power and average particle size respectively,and can intuitively and quantitatively describe the ore crushing process.
Keywords：ultrasonic vibration loading testscreening experimentparticle size distributionfractal dimensionore crushing processfractal characteristics of particles
Publication Date：2023-02-25
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：9( 71-79 )