Design a new high intensity magnetic separator with permanent magnets for industrial applications

Abstract

This paper deals with a new high intensity magnetic separator with permanent magnets. We present a new system having little energy consumption. This model consists of compression springs, small motors, levers, and the slider rail which consists of iron blocks. The objective of this paper is to retrieve the granular ferromagnetic and paramagnetic minerals. We know that for magnetic separation systems with the permanent magnets, we can not cut immediately the magnetic field in the matrices for retrieving the magnetic granular minerals. In this model we have two different air-gaps; the first air-gap is for matrices installation and the second is used to change the reluctance in order to increase or decrease magnetic field in the magnetic circuit. In this system the carousel is fixed and the matrices can move. We will calculate the maximum magnetic force necessary in the second air-gap in order to send out the matrices after filling with magnetic minerals for washing and recovering materials. We will compare the theoretical results with the simulation results by COMSOL and FEMM4.

An active microfluidic mixer utilizing a hybrid gradient magnetic field

“…Actually, magnetic particle manipulation by means of magnetic force has received increasing interest in various applications, such as magnetic levitation [23,24], magnetic separation [25][26][27], and manipulation [28,29]. When a time-dependent magnetic force acting on the magnetic fluids, the magnetic nanoparticles suspended in the fluids can cause agitation and chaotic advection [30][31][32][33][34][35][36] in the fluid flow and thus enhance the mixing performance of a microfluidic system.…”

Asymmetric Compensation of Reactive Power Using Thyristor-Controlled Reactors

“…Cores with air gaps are usually used for reactors to avoid their saturation. The theory dedicated to the design of magnetic materials with the air gap, including the cores of reactors, can be found in [48][49][50][51]. The three-phase EI-shaped reactor was designed for total reactive power | | ≈ 32Ω.…”

“…Cores with air gaps are usually used for reactors to avoid their saturation. The theory dedicated to the design of magnetic materials with the air gap, including the cores of reactors, can be found in [48][49][50][51]. The three-phase EI-shaped reactor was designed for total reactive power Q = 4.8 kVAr that corresponds to the RMS of phase current I = 7A for the low-voltage utility-grid phase voltage |U| = 230 V. The impedance of the reactor has to be |Z| = |U| |I| ≈ 32 Ω.…”

Development of smooth asymmetric reactive power compensators

“…The cores with air gaps are usually used for the reactors to avoid their saturation. The theory dedicated to the design of magnetic materials with the air gap, including the cores of reactors, can be found in (Arab- Tehrani et al, 2010;Dolan et al, 2012;Dolan & Lehn, 2007;Finotti & Gaio, 2014;Fouda et al, 1993;Kosai et al, 2013;Lotfi & Faridi, 2012;Luo et al, 2009;Topaloglu, 2016;Wass et al, 2006). Three phase single core EI shaped reactor was designed for total reactive power = 4.8 kVAr that corresponds to RMS of phase current = 7 A for low voltage utility grid phase voltage | |=230 V. The impedance of the reactor has to be…”