Rotating Drum Metal Separation from Paint Waste
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Solution Overview
Problem
Current methods for separating metal from paint waste are inefficient, labor-intensive, and result in low metal recovery rates, as they often require high-temperature incineration and manual cleaning, which are costly and time-consuming.
Innovation Solution
A system comprising consecutive rotating drums with partition walls and feeding chutes allows for the separation of metal from paint waste through a vapor phase, rinsing phase, and drying phase, enabling effective removal and reuse of metal, with a compact and cost-effective design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If high-temperature incineration is used to dispose of paint waste, then paint waste is eliminated, but metal recovery rate remains low due to inability to separate metal before incineration
Solution Approach 1:
The system divides the separation process into multiple sequential stages using several rotating drums, each performing a specific function (vapor treatment, rinsing, drying). This segmentation allows metal to be progressively cleaned and separated from paint waste at each stage, improving recovery rate without requiring a single complex incineration process.
Solution Approach 2:
The invention replaces the mechanical/thermal incineration process with a vapor-based chemical treatment system. Rotating drums expose metal to vapor phases that chemically interact with and remove paint residues, substituting high-temperature combustion with a lower-temperature vapor treatment mechanism.
2Ease of operation
If manual scraping is used to clean metal cans, then some paint is removed, but the cleaning process is labor-intensive and does not adequately clean the metal
Solution Approach 1:
The rotating drums automatically rotate through different vapor and rinsing phases, allowing the metal themselves to be treated without manual intervention. The system performs self-cleaning through the automated sequence of vapor exposure, rinsing, and drying phases as metal moves through the drums.
Solution Approach 2:
The system changes the physical and chemical parameters of the treatment environment at each stage - using vapor phases for chemical interaction, followed by rinsing fluids for physical removal, then drying. These parameter changes enable effective cleaning without manual labor while maintaining high productivity.
3Loss of substance
If frozen metal cans are subjected to impact and magnetic separation, then metal can be separated from paint waste, but the process is laborious and time-consuming
Solution Approach 1:
The rotating drums perform preliminary vapor treatment and rinsing actions on the metal before final separation is needed. By pre-treating the metal surfaces with vapor phases and rinsing fluids during rotation, the system prepares the metal for efficient separation without requiring time-consuming freezing and impact processes.
Solution Approach 2:
The continuous rotation of the drums maintains an uninterrupted treatment process, with metal continuously exposed to vapor phases, rinsing, and drying. This continuous action eliminates the intermittent steps of freezing, impact, and magnetic separation, significantly reducing total processing time while maintaining separation effectiveness.
4Manufacturing precision
If multiple rotating drums with vapor phase treatment are used, then metal separation quality is improved, but system complexity and space requirements increase
Solution Approach 1:
The system arranges multiple rotating drums in a nested or compact configuration where drums are positioned close together or share common support structures. This nesting approach allows several treatment stages to occupy minimal space while maintaining the sequential vapor treatment process needed for high separation quality.
Solution Approach 2:
Instead of arranging drums in a linear horizontal sequence that would require large floor space, the system utilizes vertical arrangement or three-dimensional positioning of the rotating drums. This dimensional change allows multiple treatment stages to be stacked or positioned in space-efficient configurations while maintaining the required treatment sequence for high-quality metal 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
The system achieves high-quality metal separation, increasing metal reuse rates and providing a cost-effective, compact process that can be easily implemented in various locations, with the ability to move and set up in different locations.
Implementation Method 1
A system comprising a number of consecutive rotating drums, the drums being separated from each other by partition walls, and, in these rotating drums, the crushed metal is arranged to move, from the preceding drum to the next drum, through an inlet provided in the partition walls
Implementation Method 2
the system comprises a rinsing phase for bringing a rinsing fluid into contact with the rotating drum, the rinsing phase being after the vapor phase
Implementation Method 3
the system comprises a drying phase for drying the metal being treated by the rotating drum, the drying phase being after the rinsing phase
Data Source
Figure 1
Figure 2
Figure 3a~4
AI summary
The present invention relates to a system (100) for separating metal from paint waste, characterized in that the system (100) comprises a crusher (104) for crushing the metal, at least one rotating drum (110a-110e) for mixing the waste, and a vapor phase (114) in which vapor is arranged in at least one rotating drum (110a-110e) so that the metal being treated is exposed to vapor. The present invention also relates to an applicable method (500) for separating metal from paint waste.