Magnetic Matrix Offset-Groove Structure for Ultrafine Separation
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Solution Overview
Problem
Conventional grooved plate magnetic matrices exhibit inefficiencies in separating ultrafine particles due to the positive correlation between pitch and particle size, which fails to generate sufficient magnetic field intensity for effective capture and retention.
Innovation Solution
Magnetic matrices with grooved plates featuring an offset alignment and larger pitch (larger tooth size) are used, generating stronger magnetic field intensities and gradients to overcome hydrodynamic drag forces on ultrafine particles, maintaining structural integrity and avoiding increased material costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If grooved plates with smaller pitch (smaller teeth) are used to separate fine particles, then the separation capability for fine particles is improved, but the magnetic field intensity is insufficient to overcome hydrodynamic drag forces on ultrafine particles
Solution Approach 1:
The patent applies asymmetry by laterally offsetting the teeth on opposite sides of each grooved plate. This asymmetric configuration creates overlapping magnetic fields from adjacent teeth that concentrate magnetic field lines in the gaps between plates, thereby increasing magnetic field intensity and magnetic gradients to overcome hydrodynamic drag forces on ultrafine particles while maintaining the ability to separate fine particles.
2Force
If grooved plates with larger pitch (larger teeth) are used to increase magnetic field intensity, then the magnetic field intensity is improved, but the separation capability for fine and ultrafine particles deteriorates
Solution Approach 1:
The patent applies local quality by creating localized concentration of magnetic field lines in the gaps between grooved plates through the offset alignment of teeth. This allows larger pitch (larger teeth) to be used while maintaining high magnetic field intensity locally in the separation zones, thereby preserving separation capability for fine and ultrafine particles while achieving sufficient magnetic field intensity to overcome hydrodynamic drag forces.
3Manufacturing precision
If the number of teeth per inch is increased to improve separation of fine particles, then the separation precision is improved, but the magnetic field gradient is reduced
Solution Approach 1:
The patent applies merging by combining the magnetic fields of adjacent teeth through lateral offset alignment, causing the magnetic field lines to concentrate and merge in the gaps between plates. This merging effect increases the magnetic field gradient even when the number of teeth per inch is increased, thereby maintaining both high separation precision for fine particles and sufficient magnetic field gradient to capture ultrafine particles.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The offset alignment allows for efficient separation of ultrafine particles by concentrating magnetic field lines, enhancing capture and retention while maintaining matrix integrity and reducing clogging risks.
Implementation Method 1
generating stronger magnetic field intensities and gradients to overcome hydrodynamic drag forces on ultrafine particles
Implementation Method 2
a raw material containing both magnetic and non-magnetic components is caused to flow through a magnetic separator having one or more magnetic matrices for separating the magnetic and non-magnetic components
Implementation Method 3
peaks of the teeth on the first side of the plate reside on a common axis as valleys of the grooves on the second side of the plate, and such that peaks of the teeth on the second side of the plate reside on a common axis as valleys of the grooves on the first side of the plate
Data Source
AI summary
A magnetic matrix for magnetic separation of particles in a material feed includes a plurality of grooved plates having first and second sides that both have an alternating series of teeth and grooves therealong, each grooved plate having an offset alignment in which teeth and grooves on a first side of a plate are laterally offset from teeth and grooves on a second side of the same plate. Also provided are methods of using magnetic matrices to separate magnetic ores, with the methods characterized by a negative correlation in which magnetic matrices constructed with grooved plates having larger pitches are used for the separation of ultrafine particles.