Wind and Magnetic Sorting of Electronic Scrap for Smelting Efficiency
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Solution Overview
Problem
The increased processing of electronic and electrical device component scraps in copper smelting flash furnaces leads to over-reduction issues due to carbon components, resulting in inefficiencies and losses of valuable metals, as existing methods struggle to effectively sort and separate valuable metals from smelting inhibitors.
Innovation Solution
A method involving wind powder sorting to remove plate-shaped materials containing valuable metals, followed by magnetic sorting, to improve the efficiency of raw material sorting and reduce losses of valuable metals by pre-separating components before feeding them into the smelting step.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If electronic and electrical device component scrap is processed in increased amounts in copper smelting flash furnaces, then productivity increases, but over-reduction troubles occur due to carbon components from organic substances
Solution Approach 1:
The patent extracts and removes plate-shaped materials containing valuable metals (such as circuit boards) from the scrap mixture before smelting. This separation eliminates the carbon-containing organic substances that cause over-reduction troubles, allowing increased processing amounts without compromising smelting process stability
Solution Approach 2:
The patent segments the scrap processing into distinct stages: wind powder sorting to separate plate-shaped materials, magnetic sorting to remove ferromagnetic substances, and then smelting. This segmentation allows each stage to address specific problems, with wind powder sorting specifically targeting the removal of carbon-containing organic materials that would otherwise cause over-reduction
2Productivity
If electronic and electrical device component scrap is crushed to reduce volume before processing, then productivity improves, but valuable metals may be lost to the heavy weight object side
Solution Approach 1:
The patent performs wind powder sorting as a preliminary action before crushing and smelting. This preliminary separation removes plate-shaped materials containing valuable metals from the scrap, preventing their potential loss to the heavy weight object side during subsequent processing stages
Solution Approach 2:
The patent introduces wind powder sorting as an intermediary separation step between the raw scrap and the smelting process. This intermediary stage uses air flow to selectively separate plate-shaped materials based on their aerodynamic properties, effectively preventing valuable metal loss while maintaining processing efficiency
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 approach significantly reduces the distribution of valuable metals to the heavy weight object side during sorting, enhancing the recovery efficiency of metals like copper and minimizing losses, with wind power sorting achieving up to 99% distribution to the light weight object side, thereby improving the overall processing efficiency.
Implementation Method 1
sorting electronic and electrical device component scrap by wind powder sorting to remove plate-shaped materials containing valuable metals
Implementation Method 2
sorting the resulting sorted objects by magnetic sorting
Data Source
AI summary
Provided is a method for processing electronic and electrical device component scrap, which can improve an efficiency of sorting of raw materials fed to the smelting step from electronic and electrical device component scrap, and reduce losses of valuable metals. A method for processing electronic and electrical device component scrap which includes sorting electronic and electrical device component scrap by wind powder sorting to remove plate-shaped materials containing valuable metals included in the electronic and electrical device component scrap, and then sorting the resulting sorted objects by magnetic sorting.