Dynamic Sensor Metal Recovery from Waste Streams
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Solution Overview
Problem
Current methods for recycling non-ferrous metals, such as copper wire, are labor-intensive and costly, with existing automated processes being ineffective and often requiring wet media, which increases processing complexity and costs.
Innovation Solution
A dry process system utilizing a dynamic sensor to detect metallic objects based on the rate of change of current, combined with air separators and eddy current systems, to efficiently separate and concentrate non-ferrous metals from waste streams, reducing labor costs and environmental impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If labor-intensive manual processing is used to recover non-ferrous metals, then recovery effectiveness is improved, but labor costs and processing time increase significantly
Solution Approach 1:
The patent replaces manual mechanical sorting with an automated detection and separation system. A sensor array detects metallic objects in the waste stream, and air nozzles automatically direct separated materials into different containers, eliminating the need for manual labor while maintaining high recovery effectiveness.
Solution Approach 2:
The system enables the waste stream to sort itself through automated detection and pneumatic separation. The sensor array and air nozzle system work autonomously to identify and separate metallic objects without human intervention, making the process self-sufficient and highly productive.
2Reliability
If wet processes are used for material separation, then separation effectiveness is improved, but processing complexity and costs increase
Solution Approach 1:
The patent uses pneumatic air nozzles instead of wet media for separation. Compressed air directs separated materials into different containers, achieving effective separation while avoiding the complexity of water management, drying, and associated environmental controls required by wet processes.
Solution Approach 2:
The system changes the separation medium from liquid (wet process) to gas (air). This parameter change simplifies the overall process by eliminating the need for drying and water management infrastructure, reducing device complexity while maintaining separation effectiveness.
3Productivity
If automated sensor systems are used to detect metallic objects, then processing speed is improved, but system complexity increases
Solution Approach 1:
The patent replaces complex mechanical sorting mechanisms with a sensor-based detection system combined with pneumatic actuation. The sensor array quickly identifies metallic objects, and air nozzles perform the separation, achieving high processing speed with simpler system architecture compared to mechanical automated sorters.
Solution Approach 2:
The system uses air as an intermediary medium between detection and separation. The sensor array detects metallic objects, triggers air nozzle activation, and compressed air delivers the separation action, creating a simple three-component system that achieves high productivity without complex mechanical linkages.
4Reliability
If multiple sorting stations are used to recover diverse materials, then material recovery completeness is improved, but facility footprint and costs increase
Solution Approach 1:
The patent creates a universal sorting system where a single sensor array and air nozzle assembly can handle multiple material types. By adjusting sensor detection parameters and nozzle positioning, the same system recovers different metallic objects from the waste stream, eliminating the need for multiple dedicated sorting stations and reducing facility footprint.
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 system enables cost-effective and efficient recovery of non-ferrous metals like copper, increasing processing speed and reducing landfill waste by using a dry process that effectively sorts and concentrates metals, improving revenue recovery and ecological sustainability.
Implementation Method 1
measures the rate of change of a current generated as a result of a metallic object moving past the dynamic sensor
Implementation Method 2
processing the metallic fraction of the waste stream with an air separator to concentrate the metal content
Implementation Method 3
combined with air separators and eddy current systems, to efficiently separate and concentrate non-ferrous metals
Data Source
AI summary
Recovering metallic materials, such as copper, from waste materials. The dynamic sensor measures the rate of change of current generated by metallic materials in the waste materials. Preprocessing and post processing of the waste materials may be completed to further concentrate the amount the metallic materials recovered from the waste.