Rotating Drum Separator for Magnetic Particle Recycling
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Solution Overview
Problem
Current magnetic separation technologies are inefficient in recycling magnetic carrier particles and surfactants, leading to high costs and environmental impact, particularly in the separation of naturally occurring ores where non-magnetic constituents interfere with smelting processes and result in excessive slag production.
Innovation Solution
An apparatus with a loop-like canal and movable magnets separates magnetic and non-magnetic particles using hydrophilic and hydrophobic liquids to treat the dispersion, allowing for efficient recycling of magnetic particles and surfactants, minimizing the amount of surfactant and magnetic material needed, and reducing slag production in smelting processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If conventional magnetic separation technologies are used, then magnetic particles can be separated from non-magnetic particles, but the recycling of magnetic carrier particles and surfactants is inefficient, leading to high costs and environmental impact
Solution Approach 1:
The patent employs a rotating drum separator where the drum rotation creates dynamic conditions for separation. The drum rotates to bring magnetic particles into contact with magnets on the drum surface, allowing magnetic particles to adhere and be transported to a discharge point, while non-magnetic particles remain in the liquid phase. This dynamic mechanical motion enables continuous separation and facilitates the recycling of magnetic carrier particles and surfactants by maintaining them in a reusable state.
Solution Approach 2:
The invention specifically focuses on recovering and recycling magnetic carrier particles and surfactants from the separation process. The apparatus is designed to separate magnetic particles while preserving the magnetic carrier particles and surfactants in the liquid phase for reuse. This recovery mechanism reduces material loss and enables sustainable operation by continuously recycling these valuable components back into the separation process.
2Reliability
If conventional magnetic separation is used, then separation of magnetic particles is achieved, but non-magnetic constituents interfere with smelting processes and result in excessive slag production
Solution Approach 1:
The patent applies local quality by using surfactants that selectively interact with specific particle surfaces. The surfactants modify the surface properties of magnetic particles, making them hydrophobic or hydrophilic depending on the application, which enhances their response to magnetic fields and improves separation effectiveness. This localized surface modification allows for more precise separation of magnetic from non-magnetic constituents, reducing contamination in the separated fractions.
Solution Approach 2:
The invention replaces purely mechanical separation methods with a combination of magnetic field forces and surface chemistry effects. By using magnets on the rotating drum surface and surfactant-modified particle surfaces, the system achieves separation based on magnetic properties and surface characteristics rather than relying solely on mechanical screening or gravity-based methods. This substitution enables more effective separation of fine particles and reduces the presence of non-magnetic contaminants in the separated magnetic fraction.
3Ease of manufacture
If fixed magnets are used in drum separators, then magnetic separation is achieved, but the apparatus does not optimize separation based on particle density and gravity
Solution Approach 1:
The patent employs a rotating drum separator where the drum rotation creates dynamic conditions for separation. The drum rotates to bring magnetic particles into contact with magnets on the drum surface, allowing magnetic particles to adhere and be transported to a discharge point, while non-magnetic particles remain in the liquid phase. This dynamic mechanical motion enables continuous separation and facilitates the recycling of magnetic carrier particles and surfactants by maintaining them in a reusable state.
Solution Approach 2:
The apparatus is arranged in respect of gravity to optimize separation. The drum and canal are positioned and oriented to utilize gravitational forces in conjunction with magnetic forces, creating optimal conditions for particle separation based on density and magnetic properties.
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 apparatus effectively separates magnetic and non-magnetic constituents, enabling high recycling ratios of magnetic particles and surfactants, reducing process costs and environmental impact, and minimizing slag production in subsequent smelting processes.
Implementation Method 1
at least one magnet that is movable alongside the canal and which forces the magnetic particles into at least one first outlet
Implementation Method 2
at least one first means for treating the dispersion or a part of the dispersion with a hydrophilic liquid
Implementation Method 3
at least one second means for treating the dispersion or a part of the dispersion with a hydrophobic liquid
Implementation Method 4
at least one second outlet through which the non-magnetic particles are forced
Data Source
AI summary
An apparatus for separating magnetic particles from a dispersion that includes magnetic particles and non-magnetic particles, the apparatus comprising; at least one arcuate canal forming 90 to 350° of a circular arc through which the dispersion flows, at least one magnet that is movable adjacent to the canal and which forces the magnetic particles into at least one first outlet, and at least one second outlet through which the non-magnetic particles exit the canal, the apparatus further comprising treating the dispersion, or a part of the dispersion, with a hydrophilic liquid, and treating the dispersion, or a part of the dispersion, with a hydrophobic liquid.