Driven by profound industry expertise and technological innovation, Kitech Machinery has successfully designed and manufactured a high-performance, customized small-scale hard plastic recycling washing line for a Spanish client. Centered around a stable processing capacity of 500-800kg per hour, this solution efficiently transforms post-consumer hard plastics into clean plastic flakes, fully meeting the client's demands for continuous, stable, clean, and high-yield plastic recycling production.
During on-site testing, which focused on various post-industrial small, rigid hollow containers, the line consistently achieved the target output of 500-800 kg per hour. This performance enables large-scale, continuous recycling operations. The tests, conducted on items such as cosmetic bottles, detergent bottles, and personal care bottles, demonstrated exceptional results. The line not only met output expectations but also showed significant advantages in the cleanliness and consistency of the final material, providing a solid foundation for the client's large-scale and sustainable plastic regeneration endeavors.
I. A Seamless, Closed-Loop Processing System:
The complete process flow is meticulously engineered with tightly interconnected stages to ensure effective treatment at every step:
Belt Conveyor → Sorting Belt (Manual Platform) → Wet Crusher → Screw Conveyor → Flotation Washing Tank → Centrifugal Drier → Big Bag Silo
II. Belt Conveyor & Metal Detector: Stable Feeding & Remove mental
The process begins with a rubber Belt Conveyor integrated with a Metal Detector. This setup ensures smooth,constant speed feeding of plastic waste into the system. The detector removes ferrous metals at the initial stage, effectively protecting downstream crushing and washing equipment from accidental damage, thereby safeguarding continuous production.
III. Sorting Belt (Manual Platform): Ensuring Purity
Despite advances in automation, manual sorting remains irreplaceable for guaranteeing the purity of recycled plastics. The Sorting Belt platform allows operators to efficiently remove non-target plastics and miscellaneous contaminants. This critical step enhances the quality stability of the final recycled material, especially crucial for producing high-purity recycled pellets.
II. Wet Crusher: Efficient, Eco-Friendly Size Reduction
Our specialized Wet Crusher is engineered for materials like plastic films, small hollow bottles, and PET containers. Kitech Machinery customizes the rotor structure based on specific material characteristics to achieve optimal shredding. Unique to this application, we employ a wet crushing process where water is introduced during shredding. The friction between the liquid and material achieves fine fragmentation. This system is supported by a Water Tank for On-line Water Circulation, promoting water conservation and enabling efficient, cyclic production.
Key Advantages of the Wet Crusher
Superior Environmental Performance: The water curtain effectively suppresses dust, eliminating airborne plastic particles without need for complex dust collection systems. It also helps absorb certain harmful gases, improving the operational environment.
Reduced Equipment Wear: The water acts as a lubricant and coolant, lowering the friction coefficient between the blades and material. This minimizes blade wear and heat generation, extending the service life of wearing parts and enhancing overall operational stability with lower maintenance costs compared to dry crushers.
III. Screw Conveyor: Efficient Material Transfer
A Screw Conveyor uniformly transports the shredded plastic flakes to the next stage, ensuring a consistent feed rate into the washing system.
IV. Flotation Washing Tank: Thorough Cleaning & Separation
The Flotation Washing Tank features an ingenious design with a bottom-mounted screw for sinking materials and a top-fitted drum for floating materials, enabling effective separation and cleaning of heavy and light impurities. Through the combined action of hydraulic agitation and mechanical friction, contaminants like dirt, sand, and residual labels are thoroughly removed from the flakes. Suitable for PP, PE, PET, and other common plastics, this tank offers high flexibility for use within a complete line or as a standalone unit.
V. Centrifugal Drier & Big Bag Silo: Effective Dewatering and Dry Storage
Cleaned flakes enter a high-efficiency Centrifugal Drier where centrifugal force removes the bulk of surface moisture. The material is then conveyed to a Big Bag Silo for temporary storage. Designed with ventilation and moisture-proof features, the silo maintains a dry environment for the plastic flakes, preventing mildew or quality degradation due to residual moisture. This "ready-to-use" storage provides premium intermediate products for subsequent pelletizing, blow molding, injection molding, or direct sale.
This customized washing line from Kitech Machinery goes beyond mere processing efficiency and output. It embodies the principles of clean production, resource circulation, and stable operation in every detail, offering a reliable, advanced, and economically significant recycling solution for our Spanish client and the global plastic recycling industry. We are committed to empowering the circular economy through technology, helping our clients achieve both environmental stewardship and economic gain.