1. Project Overview
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Location: Central China
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Date: December 12, 2024
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Equipment: 3000kg/h High-Efficiency HDPE Rigid Plastic Washing Line
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Input Material: Mixed HDPE waste from township collection centers
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Final Application: High-Purity Sheets for Melt Granulation
2. The Challenge
A regional recycling center was struggling with outdated equipment that could only achieve 85% purity. This led to:
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Low Market Value: The contaminated flakes sold for much lower prices.
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Narrow Profit Margins: High processing costs combined with low-quality output made the business unsustainable.
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Scaling Bottleneck: They needed a much higher throughput (3 tons per hour) to handle the growing volume of local HDPE waste.
3. Ruili Machinery’s Solution
We implemented a state-of-the-art washing technology tailored for mixed rigid plastics, utilizing a 5-step optimized process:
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Pre-treatment: Automatic sorting and size reduction to prepare the material.
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Hot Alkaline Washing: Specialized high-temperature alkaline solution to dissolve stubborn organic fats and oils.
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High-Speed Friction Cleaning: Mechanically removing labels, glue, and surface contaminants.
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Flotation & Sedimentation: Advanced density separation to ensure 100% removal of non-HDPE sinkable impurities.
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Centrifugal Dehydration & Drying: Ensuring the final product is dry and ready for immediate extrusion.
4. Results & Performance
After the implementation of the Ruili 3000kg/h line, the results were transformative:
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Exceptional Purity: Cleanliness increased from 85% to 99.2%, free from oil, glue, and impurities.
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High Recovery Rate: Successfully recovered 2.73 tons of clean flakes from every 3 tons of raw waste (91% recovery rate).
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Optimal Moisture Control: Final moisture content was reduced to 4.8%, ideal for direct feeding into granulators.
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Profitability Boost: The high-quality flakes now meet “Grade-A” standards, significantly increasing the client’s selling price and market competitiveness.
5. Customer Feedback
“Ruili Machinery’s 3-ton washing line completely changed our business model. We went from struggling with low-grade flakes to producing premium material that granulators compete to buy. The stability of the 3000kg/h output is impressive, and the purity levels exceeded our highest expectations.”
— General Manager, Regional Recycling Center
