Planar Magnetic Separator for Scalable Paramagnetic Extraction
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Solution Overview
Problem
Existing magnetic separators face limitations in scalability and magnetic field strength, particularly when processing paramagnetic materials like magnetite, as they become large and inefficient when scaled up due to the distribution of magnets around the periphery.
Innovation Solution
A magnetic separator design featuring a planar chamber with rotating magnets on both sides, aligned in unison, which attracts paramagnetic material towards an outlet while non-magnetic material is discharged as waste, allowing for easy scalability by adding or enlarging chambers and disks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If magnets are distributed around the periphery of rotating shells to create magnetic separation, then magnetic separation capability is achieved, but device size becomes large and scalability is limited
Solution Approach 1:
The patent transitions from a three-dimensional rotating shell configuration to a planar two-dimensional chamber design. Magnets are arranged in parallel planes on both sides of a flat chamber rather than distributed around the periphery of a volumetric shell, fundamentally changing the spatial dimension of the separation process and enabling more compact scaling.
Solution Approach 2:
The magnetic separation system is divided into multiple planar chambers that can be stacked or arranged in series. Each chamber contains its own set of magnets in parallel planes, allowing the system to be scaled by adding modular chamber units rather than increasing the size of a single volumetric shell.
2Reliability
If magnets are placed around the periphery of rotating shells, then magnetic field is generated for separation, but magnetic field strength is limited
Solution Approach 1:
The planar magnet arrangement concentrates magnetic flux density in the narrow gap between the parallel magnet planes and the chamber. This localized concentration of magnetic field strength in the separation zone achieves higher effective field intensity compared to the distributed peripheral arrangement, where field strength diminishes with distance from the magnet surfaces.
3Productivity
If device is scaled up using peripheral magnet distribution, then processing capacity increases, but device complexity and size increase significantly
Solution Approach 1:
The system is segmented into independent planar chambers that can be added in series or parallel configurations. To increase processing capacity, additional identical chambers are added to the system rather than enlarging a single chamber, maintaining consistent magnetic field characteristics and simplifying the scaling process.
Solution Approach 2:
Each planar chamber module serves multiple functions: it provides a complete separation stage with inlet, outlet, and waste ports, generates the required magnetic field through its integrated magnets, and can be independently operated or combined with other identical modules. This universal modular design simplifies scaling compared to peripheral shell configurations.
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
This design effectively separates paramagnetic material from non-magnetic material in an airstream, enhancing magnetic field strength and scalability, enabling efficient recovery of magnetite from finely crushed ore with improved product quality and operational efficiency.
Implementation Method 1
a series of magnets in planes parallel to and on both sides of the chamber, whereby the magnets rotate about a common axis thereby drawing magnetic material around the chamber
Implementation Method 2
extracting paramagnetic material such as magnetite from a suspended air stream
Data Source
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AI summary
A separator for extracting magnetic material from an airstream of magnetic material and non-magnetic material includes a planar chamber with an inlet port, outlet port and a waste port, and a series of magnets in a plane parallel to the chamber. The magnets rotate about a common axis thereby drawing magnetic material around the chamber and towards the outlet port whilst non-magnetic material is remains in the airstream and is discharged by the waste port.