Electrostatic Separator Fluidization Gas Vibration
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Solution Overview
Problem
Existing electrostatic separators face limitations in processing capacity due to the difficulty in handling large amounts of raw materials, as they require a thin layer and vibration of the bottom electrode, making it challenging to increase size and process volume effectively.
Innovation Solution
An electrostatic separator design that includes a container with a gas dispersion plate, a vibrating body within the raw material layer, a fluidization gas supplier, upper and lower electrodes with a power supply for generating an electric field, and a capturer to collect conductive particles, which promotes fluidization and contact between electrodes and raw materials, enhancing processing capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a thin layer of raw materials is formed on the bottom electrode, then the electrostatic separator can operate, but the processing capacity is limited and cannot handle large amounts of raw materials
Solution Approach 1:
The patent introduces fluidization gas through a gas dispersion plate to fluidize the raw material layer, transforming the material state from static thin layer to dynamic fluidized bed. This allows large quantities of raw materials to be processed while maintaining good contact with electrodes, thereby resolving the contradiction between processing capacity and amount of raw materials.
Solution Approach 2:
The patent applies vibration to the bottom electrode to prevent material accumulation and maintain effective processing thickness. The vibration ensures that even with larger amounts of raw materials, the material layer remains in a state suitable for electrostatic separation, thus improving processing capacity without compromising operational effectiveness.
2Productivity
If the bottom electrode is vibrated to maintain thin layer processing, then separation can occur, but increasing the size of the electrostatic separator becomes difficult
Solution Approach 1:
By introducing fluidization gas to create a fluidized bed, the patent eliminates the need for vibration-based thin layer maintenance. This allows the electrostatic separator to be scaled up in size and process larger amounts of raw materials simultaneously, resolving the contradiction between processing capacity and device size.
3Productivity
If smaller particle diameter raw materials are used, then more materials can be processed, but blow-by of fluidization gas occurs and fluidization becomes unsatisfactory
Solution Approach 1:
The patent applies vibration to the bottom electrode or vibrating body to suppress blow-by of fluidization gas through the raw material layer. This vibration maintains satisfactory fluidization quality even with smaller particle diameter materials, enabling higher processing capacity without compromising fluidization reliability.
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 design improves processing capacity by maintaining a satisfactory fluidized state and promoting contact between electrodes and raw materials, allowing for more efficient separation of conductive particles from insulating particles, even with smaller particle diameters, and enables larger-scale processing without blow-by issues.
Implementation Method 1
a power supply that applies a voltage between the upper electrode and the lower electrode such that one of the upper electrode and the lower electrode becomes a negative electrode, the other becomes a positive electrode, and an electric field is generated between these electrodes
Implementation Method 2
a fluidization gas supplier that supplies a fluidization gas that is introduced from a bottom portion of the container into the raw material layer and flows upward in the raw material layer through the gas dispersion plate
Implementation Method 3
at least one vibrating body located in the raw material layer, the at least one vibrating body being flush with the gas dispersion plate or being located above the gas dispersion plate
Implementation Method 4
an electrostatic separator that separates conductive particles by electrostatic force from raw materials including the conductive particles and insulating particles
Data Source
AI summary
An electrostatic separator separates conductive particles from raw materials includes: a container with a raw material layer; a gas dispersion plate at the bottom of the raw material layer; at least one vibrating body in the raw material layer flush with the gas dispersion plate or above it; a fluidization gas supplier introduced from the container bottom into the raw material layer flows upward through the gas dispersion plate; an upper electrode above the raw material layer; a lower electrode in the raw material layer, the lower electrode being flush with the gas dispersion plate or above it; a power supply applies a voltage between the upper and lower electrode wherein one becomes a negative electrode, the other becomes a positive electrode, and an electric field is generated between them; and a capturer captures conductive particles that have flown out of the raw material layer surface toward the upper electrode.