Not all scrap cable is the same. While some cables consist mainly of copper, others contain aluminum conductors, multiple layers of insulation, or additional reinforcements. Recycling companies therefore often face the question: Which cables can be processed using a cable granulation system?
A cable granulation plant enables the mechanical processing of various cable materials. During this process, the cables are shredded and the metals they contain are separated from the insulation materials. The goal is to recover metal fractions that are as pure as possible, which can then be recycled.
However, not every facility is suitable for all types of cables. Key factors include the cable diameter, the material composition, the condition of the insulation, and the technical specifications of the recycling machine.
Would you like to professionally process copper cable, aluminum cable, or mixed cable scrap?
Depending on the model, modern cable granulation systems can process various types of cables. They are particularly commonly used in the recycling of copper and aluminum cables.
Typical input materials include:
Which of these materials can actually be processed depends on the specific system configuration.
Especially when dealing with highly diverse cable assortments, it is important to check in advance whether the existing shredding and sorting equipment is suitable for the material.
Copper is one of the most important raw materials in cable recycling. Because of its electrical conductivity, it is used in numerous types of cables.
When processing copper cables, the metallic conductor should be separated from the plastic insulation as completely as possible.
To do this, the cable material is first mechanically shredded. The resulting metal and plastic particles are then separated.
The quality of the recovered copper granules depends on several factors:
A suitable cable granulation system can help recover copper from cable waste and reuse it as a secondary raw material.
In addition to copper cables, certain cable granulation systems can also process aluminum cables.
The basic process is similar: The cables are shredded and then separated into metallic and non-metallic components.
However, aluminum has different physical properties than copper. In particular, its lower density can affect the requirements for material separation.
Therefore, it is important to verify whether the equipment being used is designed for aluminum cables and to determine which settings are required to ensure reliable cutting.
Anyone who regularly processes both copper and aluminum cables should also keep in mind that mixing the different metal fractions can compromise the quality of the recycled material.
It may therefore be advisable to process different cable types separately.
Thin cables are among the materials for which selecting a suitable recycling machine is particularly important.
They often contain fine metallic conductors surrounded by a relatively thin layer of insulation.
The granulation process produces correspondingly small metal and plastic particles.
To ensure that these materials can be reliably separated, the shredding and separation processes must be coordinated.
Particularly with very fine copper strands, inadequate material separation can result in metal particles remaining in the plastic fraction.
For processing thin cables, therefore, the appropriate particle size and precisely calibrated cutting technology are crucial.
Not every cable granulation system achieves the same separation quality when processing fine cable types.
Recycling facilities often receive mixed bundles of cables that contain varying diameters, conductor cross-sections, and insulation materials.
Such material streams place greater demands on processing than uniform cable assortments.
For example, multi-conductor cables consist of several insulated conductors enclosed within a common jacket.
During granulation, both the outer and inner insulation layers must be sufficiently broken down to allow for subsequent separation.
The material composition also plays an important role when dealing with mixed cable scrap.
Different types of cables can have varying properties that affect the shredding process and the quality of the resulting fractions.
Careful pre-sorting can therefore make processing easier and improve the quality of separation.
Not all cables can be economically granulated without additional preparation.
Special requirements may arise, for example, with the following materials:
Reinforced cables, for example, may contain additional metallic components that can cause increased wear during shredding or require an upstream material separation process.
Very thick cables may need to be cut into smaller pieces first to achieve a suitable size.
Foreign objects such as stones, large metal parts, or other contaminants can also interfere with operation.
Before installation, you should therefore check what requirements the specific cable material places on the system.
The quality of cable processing begins even before the actual granulation process.
If different types of cables are completely mixed together, this can make it more difficult to separate the materials later on.
Targeted pre-sorting can help make the recycling process more consistent and cost-effective.
The following characteristics, for example, can be taken into account:
Especially when dealing with larger quantities of material, it is worth categorizing cable assortments based on their processing characteristics.
This allows machine settings to be better tailored to the specific input material.
For long, thick, or unevenly constructed cables, pre-shredding may be advisable.
A pre-shredder first reduces the feed material to a size that is better suited for subsequent pelletizing.
Pre-shredding can be particularly advantageous when dealing with larger cable bundles or large quantities of material that are difficult to handle.
The material is then fed into the granulator and further crushed.
It is important that the pre-shredding process be tailored to the capacity of the downstream cable granulation system.
Excessive material throughput or unsuitable piece sizes can interfere with the rest of the processing.
However, not every cable granulation system necessarily requires a separate pre-shredder. The key factors are the feedstock and the system's technical design.
The processing capacity of a cable granulation plant is often expressed in kilograms per hour.
However, this value is not the same for every type of cable.
The actual performance depends, among other things, on the following factors:
A system can achieve a different throughput with a uniform assortment of cables than with a highly mixed input material.
That is why companies should not view the specified machine capacity in isolation.
To make a realistic assessment, it is crucial to know what quantities of material can be processed under actual operating conditions.
In addition to throughput, the quality of the recovered metal fractions is an important economic factor.
The goal of cable granulation is to separate the metal from the insulation as cleanly as possible.
If significant amounts of plastic remain in the copper or aluminum granules, this can make further recycling more difficult.
Conversely, a high metal content in the separated plastic fraction means that recyclable raw materials are lost.
Proper adjustment of the plant should therefore take into account both the purity of the metals produced and metal losses.
The quality that can be achieved depends on the feed material, the grinding process, and the separation technology used.
The selection of a suitable cable granulation system should be based on the actual types of cables being processed.
A company that primarily processes thin copper wires has different technical requirements than a company that handles larger industrial and power cables.
Before making a purchase, you should therefore consider the following questions in particular:
A detailed analysis of the input material helps determine the appropriate machine capacity and technical specifications.
Used or refurbished cable granulation systems may also be considered, provided they are suitable for the intended cable types.
Diebels Recyclingmaschinen offers new, used, and refurbished machines for professional cable processing.
Depending on availability, the range of machinery includes cable granulation systems, cable stripping machines, pre-shredders, and other recycling equipment.
When selecting a suitable system, particular attention should be paid to the types of cables to be processed, the desired hourly throughput, and the material separation requirements.
A suitable combination of machines can also be a good option for companies looking to expand or modernize their existing cable processing operations.
Depending on the technical design, a cable granulation system can be used to process various types of copper and aluminum cables.
While certain types of cables are relatively easy to process, thin strands, reinforced cables, or cables made of a wide variety of materials may present additional challenges.
Therefore, it is not only the specified machine capacity that is decisive, but above all the system's suitability for the actual input material.
Proper coordination of shredding, material feeding, and separation technology lays the foundation for efficient cable processing and the highest possible quality of raw material recovery.