Hydrophobic Magnetic Carrier Particles for Ultraflotation Separation
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Solution Overview
Problem
Existing separation processes for hydrophobic or hydrophobized materials from mixtures are inefficient, leading to low yield and potential contamination from toxic compounds like chromium, which increases processing costs and risks.
Innovation Solution
A process involving contacting the dispersion with hydrophobic or hydrophobized magnetic particles, followed by air flotation to separate magnetic agglomerates, and then disaggregating and separating the magnetic particles using a magnetic field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If magnetic particles are used to separate hydrophobic materials from mixtures, then separation efficiency is improved, but bond strength between magnetic particles and target material is insufficient leading to low yield
Solution Approach 1:
A hydrophobizing agent is introduced as an intermediary substance that bridges the magnetic particles and the hydrophobic target material. The agent first adsorbs onto the magnetic particle surface, then binds to the hydrophobic material through hydrophobic interactions, creating a strong indirect bond that overcomes the insufficient direct bonding between magnetic particles and target material
Solution Approach 2:
The system forms a composite structure consisting of magnetic particles coated with hydrophobizing agent that are bound to hydrophobic target material. This composite agglomerate combines the magnetic properties of the particles with the hydrophobic characteristics of the target material, enabling effective separation while maintaining strong bonds
2Device complexity
If conventional separation processes are used, then processing is simpler, but contamination from toxic compounds like chromium increases
Solution Approach 1:
The hydrophobizing agent is selectively applied only to the magnetic particles rather than being present throughout the entire mixture. This targeted application allows the agent to mediate binding between magnetic particles and target material without causing widespread contamination of toxic compounds like chromium in the bulk mixture
Solution Approach 2:
The hydrophobizing agent acts as a controlled intermediary that enables separation through specific hydrophobic interactions, replacing conventional methods that require harsh chemicals or complex treatment processes. This reduces exposure to toxic compounds while achieving effective separation
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
Enhances separation efficiency, increases yield, and reduces the risk of contamination by effectively isolating valuable materials while minimizing the use of apparatuses, thus improving the overall recovery process.
Implementation Method 1
contacting the dispersion with hydrophobic or hydrophobized magnetic particles to provide a dispersion I comprising at least one magnetic agglomerate comprising the at least one hydrophobic or hydrophobized material and the at least one hydrophobic or hydrophobized magnetic particle
Implementation Method 2
separating the at least one magnetic agglomerate from the dispersion I of step (A) by subjecting the dispersion I to air flotation
Implementation Method 3
separating the at least one hydrophobic or hydrophobized material from the magnetic particles by applying a magnetic field
Data Source
AI summary
The present invention relates to a process for the separation of at least one hydrophobic or hydrophobized material from a dispersion comprising said at least one hydrophobic or hydrophobized material and at least one second material. The process according to the present invention comprises the steps (A) to (D) which are described herein.