Sink-Float Separation Tank for Plastic Recycling
In plastic recycling, separating different types of plastics efficiently is crucial. The Sink-Float Separation Tank is an essential tool that uses water to segregate materials based on their distinct densities. It ensures accurate separation of plastics like PET from PP/PE, and simultaneously cleans the materials, making it a cornerstone of modern recycling operations.
Working Principle: Two Main Applications
Our sink-float tank utilizes the density of water (1 g/cm³) to achieve separation. Any material with a higher density will sink, while material with a lower density will float. This principle allows for two primary separation goals:
- Separating Sinking Plastics (PET)
In PET bottle recycling, valuable PET flakes sink to the bottom while contaminants like PP/PE bottle caps float. A screw conveyor at the bottom collects the clean PET, while rotating drums remove the floating caps.
- Separating Floating Plastics (PP/PE)
When processing mixed plastics, valuable PP and PE flakes float to the surface while heavier plastics (PET, PVC) and contaminants sink. Paddles guide the clean PP/PE flakes for collection.
Key Advantages
- High Separation Purity
The simple yet effective density-based method ensures a high degree of accuracy in separating different plastic types, leading to a cleaner final product.
- Water-Saving Design
The innovative "W" shaped bottom creates two cleaning zones, significantly improving washing efficiency while conserving water.
- Dual-Functionality
Simultaneously separates and cleans materials, removing heavy contaminants like dirt, sand, and metals in a single, efficient step.
- Durable Construction
With a Type 304 Stainless Steel interior and a robust carbon steel frame, the tank is built for longevity in demanding recycling environments.
Technical Specifications
| Feature | Specification Range |
|---|---|
| Interior Width | 1000mm – 2000mm |
| Total Length | 4 – 7 meters |
| Interior Material | Type 304 Stainless Steel |
| Exterior Frame | Carbon Steel |
| Conveyor/Paddle Motors | Customized based on application |
| Certification | CE certification available |
*Note: All parameters, including motor configurations for screw conveyors or paddles, are fully customizable based on the material being processed and required throughput.
Frequently Asked Questions
Yes, the core principle is the same. However, the machine is optimized based on your primary goal. A line focused on PET will have robust screw conveyors at the bottom, while a line for PP/PE will have efficient rotating drums or paddles at the top. We configure the machine for your specific needs.
The "W" shape creates two distinct cleaning zones. The first zone handles the initial, dirtiest wash, trapping most contaminants. This allows the water in the second zone to stay much cleaner for longer, reducing the frequency of water changes and thus conserving water.
To ensure longevity and prevent contamination of the plastic, all parts that come into contact with water are made from Type 304 Stainless Steel. This material is highly resistant to both rust (oxidation) and corrosion, which is crucial in a wet recycling environment.
Warranty & Installation
- 1-Year Limited Warranty
Each of our recycling machines includes a comprehensive one-year limited warranty, giving you peace of mind with your investment.
- Expert Installation Support
We provide professional installation services. Our experienced engineers can visit your site to assist with the complete setup and commissioning process.
Inquire Now
For the latest prices and lead times on our customizable Sink-Float Separation Tanks, please contact us using the form below.
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