Applicable Materials: Prepared aluminum crankcases, engine housings, gearbox housings, transmission housings, motor housings and other bulky hollow cast aluminum parts.
Key technical information for quick evaluation.
Review the equipment introduction, working principle, advantages and technical specifications in one clear page.
Scrap Aluminum Recycling Line Process Diagram
The aluminum recycling line is a configurable processing system used for prepared aluminum profiles, cast aluminum parts, machinery aluminum, used beverage cans, aluminum sheet offcuts and selected mixed aluminum scrap.
The processing route is selected according to the incoming material rather than built around a fixed equipment list. Properly sized aluminum scrap may enter sorting or crushing directly, while long, bulky, bundled or difficult-to-feed material may require primary size reduction by a twin shaft shredder.
When smaller and screen-controlled output or improved material liberation is required, the prepared scrap can be processed by a scrap aluminum crusher. The crusher uses high-speed hammer impact, while the shredder performs low-speed, high-torque coarse size reduction.
After shredding or crushing, a magnetic separator can recover exposed screws, steel inserts, hinges, shafts and other ferrous components from the aluminum-rich material stream.
Screening and material spreading may be added to control particle size and provide more uniform feeding. After ferrous metal removal and suitable material preparation, an eddy current separator may recover conductive non-ferrous metals from an appropriate non-metallic material stream.
An eddy current separator does not normally separate mixed aluminum, copper, zinc and other non-ferrous metals into individual high-purity products. Additional density separation, sensor-based sorting or manual sorting may be required when separate metal fractions are needed.
The aluminum recycling line can also include airflow sorting, dust collection, material collection conveyors and centralized control according to the contamination level, required recovered products and installation site.
Aluminum dross, aluminum ash, hot slag, fine aluminum powder and materials containing salt or unknown chemicals require separate process and safety evaluation. They should not be treated as ordinary aluminum scrap feed.
Applications:
Scrap aluminum recycling enterprises
Aluminum profile recycling plants
Secondary aluminum processing sites
Thermal break aluminum window and door recycling
Aluminum profile manufacturing offcut recovery
UBC and aluminum can recycling
Aluminum component recovery from ELV and appliance dismantling
Aluminum-plastic composite material sorting
Selected aluminum dross and aluminum ash processing, depending on material condition and equipment configuration
Aluminum crankcases and housings should be inspected before shredding. Residual oil and other fluids must be drained. Large steel shafts, gears, bearings, filters and easily removable attachments should be dismantled where practical.
The operator should confirm the maximum housing dimensions, wall thickness, individual weight, internal structure and approximate ferrous content before selecting the shredder model.
Prepared housings are loaded into the feeding hopper by a grab, lifting device or suitable conveyor. The feeding method should match the individual component weight, loading height and required processing rate.
Material should be supplied at a controlled rate. Repeatedly dropping several heavy components into the cutting chamber at the same time may cause unstable loading and unnecessary shock to the drive system.
Two cutter shafts rotate in opposite directions at low speed. The cutter hooks engage the edges, ribs and openings of the aluminum housing and pull the material into the shredding chamber.
As the shafts continue to rotate, the cutters apply shearing, tearing and compressive forces. The hollow housing structure is opened and reduced into shorter, coarse pieces.
The machine relies on torque and cutter engagement rather than high-speed hammer impact. This operating principle is suitable for bulky and irregular housings that require primary size reduction.
When the drive load exceeds the preset control value, the system can stop or reverse the cutter shafts to release the material and reduce the risk of prolonged jamming.
Automatic reverse control is a protective function rather than a substitute for proper material preparation. Oversized steel components and unsuitable solid parts must still be removed before feeding.
Shredded material leaves the bottom of the cutting chamber and falls onto the selected collection area or discharge conveyor.
The standard output is coarse and irregular because the twin shaft shredder does not use a bottom screen. Cutter width, cutter hook design, shaft spacing and material structure all influence the discharged piece size.
The coarse shredded output may be inspected, collected or conveyed to another processing stage. When smaller and screen-controlled output is required, the material can enter a suitable aluminum crankcase crusher for secondary hammer crushing.
Magnetic separation may be considered after sufficient material liberation when exposed iron or steel components need to be recovered. Downstream equipment is selected separately and is not part of the standard shredder main unit.
The machine uses heavy-duty gear reducers and two low-speed cutter shafts to provide the torque required to grip and tear bulky aluminum housings. The process is designed for primary size reduction rather than high-speed fine crushing.
Two counter-rotating cutter shafts draw irregular housings into the shredding chamber. Cutter hooks engage housing edges, ribs and cavities, helping reduce problems caused by unstable shapes and difficult direct feeding.
The shredder is intended for prepared crankcases, gearbox housings, transmission housings, motor housings and similar hollow cast aluminum components. It is not presented as a general-purpose crusher for all aluminum scrap.
The cutter shafts are assembled with individual cutters and spacers. Worn or damaged components can be inspected and replaced according to the actual operating condition without automatically replacing the complete cutter shaft assembly.
Each cutter shaft can be driven by its own motor and reducer according to the selected machine design. The independent drive arrangement supports torque delivery and reverse control under changing material loads.
The electrical control system monitors the drive load. When abnormal resistance is detected, the cutter shafts can stop and reverse according to the control setting before attempting to resume shredding.
The machine opens and reduces bulky housings into pieces that are easier to inspect, convey or feed into a secondary crusher. The shredder does not claim to produce uniform particles or a precise final size.
The machine frame, bearing supports and shredding chamber are configured according to the expected housing dimensions, individual component weight and required torque. Protective structures help isolate the drive and bearing areas from direct material impact.
The standard machine can be connected to a hopper, loading platform, feeding conveyor or discharge conveyor according to the workshop arrangement. Auxiliary equipment should be selected from actual handling requirements rather than added as a fixed package.
The aluminum crankcase shredder performs low-speed coarse shredding. A separate hammer crusher is used only when the project requires smaller, screen-controlled output or further release of embedded ferrous components.
Parameter description diagram for Aluminum Crankcase Shredder | Engine Housing Shredding Machine:
The shredder model should be selected from representative aluminum crankcase information rather than a material name alone. Housing dimensions, individual weight, wall thickness and internal steel components directly affect cutter size, shaft length, motor power and gearbox torque.
Representative material photos and working videos
Type of crankcase, engine housing or gearbox housing
Normal and maximum material dimensions
Approximate wall thickness and reinforced rib structure
Average and maximum weight of each component
Whether the housing is empty, dismantled or partially assembled
Types and sizes of remaining shafts, bearings, gears and steel inserts
Residual oil, coolant or other contamination
Required hourly processing capacity
Expected condition of the coarse shredded output
Whether secondary hammer crushing will be installed
Feeding method and available loading equipment
Available installation length, width and height
Local voltage and electrical frequency
The cutter chamber opening should accommodate the prepared housing after removable shafts, gears and other unsuitable components have been dismantled. Oversized housings may require hydraulic breaking or another preparation method.
Cutter dimensions are selected according to the housing wall thickness, rib structure, material strength and expected output condition. Thicker cutters generally provide greater strength, while narrower cutters may produce shorter pieces but require suitable material conditions.
The cutter hook shape and quantity affect the ability to engage irregular housing edges and openings. The design should balance material gripping, cutting force and resistance to abnormal loading.
The effective shaft length determines the width of the shredding chamber. It should be selected according to common material dimensions and the intended feeding method rather than only the required capacity.
Drive power and reduction ratio should be matched to the cutter diameter, shaft speed, housing structure and expected loading condition. Motor power alone cannot be used to predict processing capacity.
The twin shaft shredder produces coarse and irregular output. The result depends on cutter width, cutter arrangement, shaft spacing, material orientation and the original housing structure.
If the project requires a defined maximum output size, a downstream hammer crusher with a suitable screen or grate should be evaluated separately.
Actual throughput depends on the time required for each housing to be gripped, opened and discharged. Housing dimensions, internal steel content, individual weight, feeding intervals and operator loading method can all affect hourly production.
Representative material testing is recommended when the project includes unusually thick housings, large steel inserts or mixed component structures.
The final machine configuration may include twin cutter shafts, replaceable cutters, heavy-duty spacers, independent motor and reducer drives, reinforced bearing supports, automatic reverse control, a feeding hopper and a discharge connection.
A feeding conveyor, discharge conveyor, hydraulic loading device or maintenance platform can be added according to the site. Secondary crushing, magnetic separation, screening and other downstream processes should be evaluated as separate equipment.
Complete engine assemblies should not be treated as prepared aluminum crankcases. Large steel crankshafts, gears, bearings, sealed cavities, residual fluids and other unsuitable components must be removed or evaluated separately.
The machine is not intended for hot aluminum dross, aluminum ash, aluminum powder, batteries, sealed pressure components, explosive containers or unidentified hazardous material.
Find common questions about scrap metal crushers, shredders, recycling lines, equipment selection, capacity configuration and operation requirements.
Please provide material photos or videos, normal and maximum housing dimensions, wall thickness, individual component weight, remaining steel parts, required hourly capacity and expected output condition. The feeding method, local voltage and available installation space are also required for equipment configuration.
The cutters, spacers, cutter shafts, bearing assemblies and chamber protection components should be inspected regularly. Maintenance frequency depends on housing thickness, steel content, daily operating time and feeding condition. Worn or damaged cutters should be serviced according to their actual condition.
No. A standard twin shaft shredder uses two counter-rotating cutter shafts for low-speed shearing and tearing, without a bottom screen. When smaller output with a defined maximum size is required, the coarse shredded material can be transferred to a suitable hammer crusher for secondary processing.
The control system monitors the drive load during operation. When abnormal resistance exceeds the preset value, the cutter shafts can stop and reverse to release the material before attempting to resume shredding. Automatic reverse protection does not replace proper dismantling and feed inspection.
Small inserts may be evaluated when their dimensions and quantity remain within the machine limits. Large shafts, gears, bearings, thick steel brackets and solid ferrous components should be removed before feeding because they can increase cutter load and accelerate wear.
Actual capacity depends on the dimensions and weight of each housing, wall thickness, reinforced ribs, remaining steel inserts, feeding intervals and the selected shredder model. Representative material photos, dimensions and individual weights are required before confirming hourly capacity.
A reference output range of 50 to 300 mm may be considered, but the shredded pieces are coarse and irregular. Actual output depends on cutter width, cutter hook design, shaft spacing, housing structure and feeding direction. The twin shaft shredder does not use a bottom screen to produce a precise particle size.
Yes. Residual oil, coolant and other fluids must be drained before the material enters the shredder. The housings should also be inspected for sealed cavities, filters, batteries and unidentified components that may create processing or safety problems.
No. Complete engines should be dismantled before shredding. Residual fluids, crankshafts, gears, bearings, filters and other large or easily removable steel components should be removed. The machine is intended for prepared aluminum housings rather than complete engine assemblies.
The machine is designed for prepared aluminum crankcases, empty engine housings, gearbox housings, transmission housings, motor housings and similar bulky hollow cast aluminum parts. Feed suitability depends on the housing dimensions, wall thickness, individual weight and remaining steel components.
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