Feasibility Analysis of Calcium Carbonate Particle Trajectory Simulation in a Dual Horizontal Shaft Mixer

Abstract

This article aims to investigate the feasibility of using discrete element software EDEM 2022.0 to simulate the trajectory of artificial marble patterns in a dual horizontal shaft mixer. Research was conducted on the mixing uniformity of particles in the mixing chamber, and the optimal speed range for particle mixing was established. By simulating the trajectory of pigment particles, the trajectories of the particles at different positions of the stirring paddle were obtained, and the trajectories were compared with the measured results. In the study of uniform particle mixing, the Lacey index at different speeds was compared, and the optimal speed range was established between 40 RPM and 60 RPM. Based on this, the particle trajectory simulation found that the motion trajectories of particles at different positions of the stirring paddle varied significantly. The particles in the stirring paddle rod exhibit a gradual trend, in which they gradually decrease as they approach the head of the stirring paddle. Finally, the feasibility of this method was established by comparing the simulated and actual patterns through proportional replication of the mixing process, and it was discovered that the two were similar.

Study on the Conveying Characteristics of a Hanged Harvester Vibrating Screen for Ligusticum Chuanxiong

“…After the Chuanxiong-soil residue is thrown upwards, by integrating equation (20) with time t, the velocity of the Chuanxiong-soil residue relative to the x′-axis and y′-axis directions of the vibrating screen (v′x′ and v′y′) is obtained through Equation ( 21):…”

“…Ma et al [19] found that the rotation angle of the front swing bar has a positive influence on the backward movement rate of particles. Song et al [20] studied the motion trajectory to determine the optimal speed range for particle mixing and transportation. Yang et al [21] studied the forces, stratification mechanisms, and throwing principles of materials on the screen.…”

Enhanced Modeling for Analysis of Fine Particulate Interactions with Coated Surfaces

“…EDEM, notably the first modeling and simulation software developed using the DEM [16], has proven successful in various fields. Examples of its application include characterizing material movement in loader shovels [17], analyzing particle trajectories in mixers [18], and understanding the crushing process of gold-bearing ore in a jaw crusher [19]. The built-in JKR model [20] within EDEM is a cohesive contact model, taking into account the influence of van der Waals forces within the contact zone.…”