PCB Component Removal via Isothermal Heating and Vibration
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Solution Overview
Problem
Current e-waste recycling methods face inefficiencies in separating and recovering individual components from Printed Circuit Boards (PCBs) due to their mixed nature and diverse materials, leading to low recovery rates of precious metals and limited recyclability, especially when using high-temperature processing or size-limited methods.
Innovation Solution
An apparatus and method utilizing an isothermal system with heating rods, mechanical handling via pulleys and levers, and selective separation through mesh tables and vibration to dislodge components based on size, shape, weight, and physical properties, allowing for targeted processing of each component type within a controlled temperature range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If high-temperature processing is used to extract metals from PCB, then metal extraction is achieved, but recovery efficiency is low and metals are highly impure
Solution Approach 1:
The invention segments the PCB into individual components before processing. The separation system divides the PCB into soldered components, mechanically attached components, and the PCB substrate itself, allowing each segment to be processed by the most appropriate method, thereby improving both recovery efficiency and metal purity
Solution Approach 2:
The invention extracts valuable components and materials from the PCB before final processing. By removing components at the separation stage and directing them to appropriate processing streams, the system prevents contamination and loss that would occur in bulk high-temperature processing
2Productivity
If bulk smelting is used to process entire PCB, then large quantity processing is achieved, but no reusable items can be recovered and large equipment is required
Solution Approach 1:
The invention divides the PCB processing into multiple stages: separation of components from the board, classification of components by type, and targeted processing of each category. This segmentation enables recovery of reusable components while maintaining efficient processing throughput
Solution Approach 2:
The invention performs preliminary separation and classification of PCB components before final processing. By identifying and separating reusable components, precious metals, and ordinary materials in advance, the system prevents loss of valuable items while preparing materials for efficient bulk processing where appropriate
3Device complexity
If manual or simple physical methods are used for component separation, then equipment complexity is low, but separation efficiency and component recovery are limited
Solution Approach 1:
The invention replaces manual mechanical separation with automated systems including vibration mechanisms, suction systems, and classification apparatus. These systems use controlled physical principles rather than manual labor to achieve high-speed, high-precision separation of components
Solution Approach 2:
The invention changes physical parameters such as vibration frequency, air flow rate, and temperature to optimize separation efficiency. By adjusting these parameters, the system can selectively separate different types of components based on their physical properties without requiring excessively complex equipment
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 metal recovery efficiency and enables the reuse of components by effectively separating and processing individual components from PCBs, reducing environmental impact and the need for bulk recycling equipment.
Implementation Method 1
utilizing an isothermal system with heating rods
Implementation Method 2
selective separation through mesh tables and vibration to dislodge components
Implementation Method 3
mechanical handling via pulleys and levers
Data Source
AI summary
The proposed invention relates to an apparatus and a method of separating all the parts including but not limited to electronic components, mechanical components, and electromechanical components, modules etc either individually or in sections and modular parts from the main input PCB. The proposed invention is an apparatus and method for component removal during recycling of an electronic device comprising in combination an isothermal system; heating to achieve desired range of temperature within the said isothermal system; at least one system for mechanical handling of the object being recycled; at least one system for selective separation of components being removed.