Cans Shredder Machine: A Guide to Metal Packaging Recycling Tech, Apps & Solutions

In the field of metal packaging recycling and solid waste treatment, cans shredder machine and aluminium can shredder machine are core equipment that break through efficiency bottlenecks and enable resource utilization. This article provides a comprehensive analysis of these two types of equipment, covering technical principles, application scenarios, selection and maintenance, as well as Q&A, to accurately address the practical challenges faced by industry professionals.

1. In-depth Technical Analysis: The "Specialized" Core of Shredding Equipment

(1) Cans Shredder Machine: A Versatile Problem-Solver with Dual-Shaft Shearing

The cans shredder machine is a dual-shaft shearing crusher. It crushes materials such as metal cans, waste home appliance casings, and pipes into uniform pieces through the meshing and shearing action of rotating blades (arranged in a spiral pattern on two main shafts) and fixed blades.

    •Blade System: It uses AISI D2 tool steel (a commonly used high-hardness alloy in the industrial sector, featuring excellent wear resistance and toughness), which is strengthened to a hardness of HRC 58-62 through vacuum heat treatment. The spiral arrangement of the rotating blades ensures smooth material feeding, allowing easy handling of cans with residues and irregular shapes, and completely solving the problems of "material jamming" and "uneven crushing" of traditional equipment.

    •Drive and Sealing: It is equipped with a high-torque variable-frequency motor (power optional: 20-120 HP, 1 HP ≈ 0.746 kW), which can automatically adjust the speed according to material hardness to meet the requirements of stable operation under different loads. The bearings adopt a six-layer sealing structure, providing excellent waterproof and dustproof performance, and their service life is extended to over 8,000 hours, ensuring long-term continuous operation capability.

    •Material Compatibility: It covers a wide range of materials, including hollow containers (beverage cans, plastic barrels), waste home appliances (TV, washing machine casings), pipes (large PVC pipe fittings, PE pipes), and scrap metal (car casings, steel plates with a thickness of <0.2 inches, 1 inch ≈ 25.4 mm), making it suitable for various complex recycling scenarios.

(2) Aluminium Can Shredder Machine: A Precision Processor with Impact Crushing

The aluminium can shredder machine is a single-shaft impact crusher. It crushes aluminum cans into aluminum granules of specified particle size by means of high-speed hammer impact and screen classification.

    •Hammer and Classification: The hammer heads are made of AISI 1141 high-manganese steel (a mainstream choice for wear-resistant steel, with a hardness of HB 280-320 after quenching), offering outstanding impact and wear resistance. It is equipped with multi-layer adjustable screens, which can accurately control the particle size of aluminum granules (8-20 mesh, standard sieve specification) to meet the strict particle size requirements of recycled aluminum smelting for raw materials.

    •Cost Advantage: Worn tools can be reused through plasma spray coating (a mainstream industrial repair process) and welding repair, reducing maintenance costs by 40%. The hexagonal inner hole design of the tools ensures more uniform force distribution, improving the operational stability of the equipment by 20%, reducing fault shutdowns caused by vibration, and ensuring production continuity.

2. On-Site Application: Full-Link Value from Pretreatment to High-Value Utilization

(1) Multi-Scenario Adaptability of Cans Shredder Machine

    •Food Can Recycling: It crushes expired meat cans and irregular seafood cans into pieces of 4×4 inches (approximately 100×100 mm). Subsequent magnetic separation and eddy current separation enable efficient separation of tinplate and impurities, promoting both resource utilization and harmless treatment, which aligns with the "reduction and high-value utilization" goals of solid waste recycling.

    •Hazardous Waste Metal Can Treatment: It safely crushes corrosive chemical cans, replacing manual disassembly, avoiding safety risks caused by chemical residues, and promoting the upgrading of hazardous waste treatment processes towards mechanization and standardization, while reducing manual operation intensity and safety hazards.

    •Waste Home Appliance/Pipe Recycling: It crushes materials such as TV casings and large pipe fittings, providing homogenized raw materials for subsequent metal separation and plastic recycling, reducing the impact of material shape differences on separation efficiency, and improving the processing efficiency of the entire recycling line.

(2) High-Value Recycling of Aluminium Can Shredder Machine

In the recycled aluminum industry, the purity of aluminum granules can reach over 95% after crushing by the equipment. Direct smelting can reduce energy consumption by 30% (compared with primary aluminum production), significantly reducing energy consumption and carbon emissions. In the packaging recycling chain, it supports the closed-loop operation of "recycling - crushing - recycling - new can manufacturing", providing core technical support for the construction of a green packaging system and facilitating the sustainable development of the industry.

(3) Efficiency Multiplication through "Dual-Machine Collaboration"

If a production line processes both tin cans and aluminum cans, a "division of labor and collaboration" model can be established: the cans shredder machine focuses on processing irregular tin cans to efficiently separate tinplate, while the aluminium can shredder machine specializes in precision crushing of aluminum cans to ensure the purity and particle size of aluminum granules. This combination not only improves overall recycling efficiency but also realizes differentiated high-value utilization of different metal materials, maximizing recycling economic benefits.

3. Equipment Selection and Maintenance: A Practical Guide for Precise Demand Matching

(1) Selection Basis Table

   •Small and medium-sized production lines (5-10 tons/hour): Priority is given to modular dual-shaft can shredders + small aluminum can crushers, balancing flexibility and cost control to meet small and medium-scale recycling needs.

    •Large-scale production lines (>20 tons/hour): Customized high-torque can shredders (e.g., equipped with 120 HP motors) + multi-stage classified aluminum can crushers are recommended to ensure stable operation and precision processing capabilities under high load.

(2) Key Maintenance Actions

    •Wear Part Maintenance: Check the wear condition of blades/hammer heads every 500 hours, and repair the cutting edges using surfacing welding technology. For aluminum can crushers, wear-resistant liners can be replaced to extend the service life of hammer heads and reduce the cost of replacing wear parts.

    •System Inspection: Check the tightness of equipment connection fasteners daily, monitor the main motor current weekly (with fluctuation controlled within ≤5%), and add lithium-based grease to bearings monthly to ensure the stable operation of key equipment components.

    •Environmental Compliance: Equip with pulse bag dust collectors (with dust removal efficiency ≥99%) to control dust emissions, and install sound insulation covers to limit equipment operation noise within 85 dB, meeting the environmental protection and occupational health requirements of industrial production.

4. Quick Q&A: Accurate Answers to Industry Pain Points

    1.Can cans shredder machine handle cans with liquid residues?

Yes. The equipment adopts a sealed crushing chamber design to effectively prevent liquid leakage. The dual-shaft shearing force can easily crush cans with viscous residues. Subsequently, solid-liquid separation equipment such as screw presses can be used to purify the materials, with a liquid recovery rate of over 95%, avoiding contamination of subsequent processes by residual liquids.

    2.How much does the particle size of aluminum granules affect recycling efficiency?

The particle size of aluminum granules should be controlled within 10-15 mesh (suitable for smelting and recycling): excessively large particle sizes will extend smelting time, leading to a 10%-15% increase in energy consumption; excessively small particle sizes will increase the oxidation loss of aluminum granules, reducing the recovery rate by 5%-8%. The particle size can be accurately controlled by adjusting the screen precision, ensuring the efficiency and benefits of the recycling process.

    3.Can the equipment be customized according to actual needs?

Yes, both types of equipment can be customized. Cans Shredder Machine can have their feed inlet size, blade thickness, and main shaft speed adjusted as needed to adapt to the processing of special-sized materials. Aluminum can crushers can be customized in terms of the number of hammer heads, the number of screen layers, and the range of discharge particle sizes. For example, for high-end recycled aluminum needs, an exclusive crushing process with a purity of ≥98% can be customized to meet the requirements of precision production.

With the model of "professional crushing + collaborative recycling", these two types of equipment have created a complete system for efficient pretreatment and high-value utilization in metal packaging recycling. Under the trend of circular economy, they will continue to drive the solid waste treatment industry towards more efficient and greener development, effectively solving a series of practical problems faced by industry professionals in technical selection, scenario application, and operation management.