Introduction to Sink Float Separation in PET Recycling
In the realm of PET recycling, efficiency and purity are paramount. A sink float separation tank is a critical component designed to segregate materials based on their density relative to water. This process is essential for removing contaminants such as polypropylene (PP) and polyethylene (PE) bottle caps from PET flakes, ensuring a higher quality end product. At ASG Machine, we engineer separation tanks that maximize operational efficacy, durability, and integration within your recycling line.
How a Sink Float Separation Tank Works
The principle behind sink float separation is straightforward yet highly effective. Water has a density of 1 g/cm³. Materials with a density greater than water sink, while those with lesser density float. In PET recycling, granulated bottles enter the tank where PET (density ~1.38 g/cm³) sinks, and contaminants like PP (density ~0.90-0.91 g/cm³) and PE (density ~0.91-0.97 g/cm³) float.
Our tanks feature specially designed rotating drums that guide floating contaminants into a collection silo. Simultaneously, screw conveyors at the bottom gather the sunken PET flakes, transferring them to the next stage of processing. This method ensures minimal cross-contamination and high-purity output.
Key Benefits of Using a Sink Float Separation Tank
- Enhanced Purity: Achieve up to 99% separation efficiency, crucial for meeting industry standards.
- Water Efficiency: Designed for recirculation systems, reducing water consumption and operational costs.
- Durability: Constructed with corrosion-resistant materials for long-term reliability.
- Scalability: Customizable lengths and widths to fit various production capacities.
- Low Maintenance: Simple design with easy access points for cleaning and upkeep.
Technical Specifications
To ensure optimal performance, our sink float separation tanks are available in standard and extended sizes. Longer tanks allow extended material soak time, improving cleaning and separation efficacy.
| Specification | Value |
|---|---|
| Interior Width | 1500mm – 2000mm |
| Total Length | 4 – 6 meters |
| Interior Material | Type 304 Stainless Steel |
| Exterior Frame | Carbon Steel |
| Screw Conveyor Motors | 5.5KW + 3.7KW |
| Rotating Drum Motors | 0.37KW + 2.2KW |
The use of Type 304 stainless steel ensures resistance to oxidation and corrosion, vital for withstanding the harsh conditions of recycling environments.
Integration into Your PET Washing Line
A sink float separation tank is typically positioned after granulation and before the drying stage. Proper integration ensures seamless material flow, reduces bottlenecks, and enhances overall line efficiency. At ASG Machine, we provide end-to-end support for system design, installation, and optimization.
Industry Trends and Advancements
The recycling industry is increasingly adopting automated and AI-driven systems for better material tracking and efficiency. Modern separation tanks now often include sensors for real-time monitoring of contamination levels and water quality, aligning with sustainable practices and regulatory requirements.
Buyer’s Guide: Selecting the Right Separation Tank
When choosing a sink float separation tank, consider the following:
– Throughput Capacity: Match the tank size to your hourly processing volume.
– Material Compatibility: Ensure construction materials suit your specific recycling stream.
– Customization Options: Look for suppliers offering tailored solutions.
– After-Sales Support: Verify availability of spare parts and technical service.
– Energy Consumption: Opt for energy-efficient motors and designs.
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Frequently Asked Questions (FAQ)
Q: How often does the water in the tank need to be changed?
A: With a recirculation and filtration system, water change frequency is minimal. Regular monitoring of water quality is recommended to maintain separation efficiency.
Q: Can the tank handle other plastics besides PET?
A: Yes, it can be used for separating other materials where density differences are applicable, such as in mixed plastic recycling streams.
Q: What maintenance is required?
A: Routine checks of motors, conveyors, and interior surfaces for wear or buildup are advised. Stainless steel components require minimal upkeep.
Q: Is customization available for specific plant layouts?
A: Absolutely. We offer custom dimensions, motor configurations, and integration features to suit unique operational needs.
Q: How does this improve the value of recycled PET?
A: By removing contaminants, the resulting PET flakes are of higher purity, commanding better market prices and expanding application possibilities.
Place An Order
Standard equipment orders typically ship within 30 days. Custom orders or complete washing lines may require 60–90 days, depending on complexity and current queue. Contact us to discuss pricing, specifications, and delivery timelines. Our team at ASG Machine is ready to assist you in enhancing your recycling operations with reliable, high-performance machinery.
