Application of Cable Granulator in Cable Recycling and Its Environmental Significance

With the rapid iteration and popularization of electronic products, the issue of recycling discarded circuit boards is becoming increasingly prominent. Cable granulators contain abundant metal resources such as copper, gold, silver, etc., which have extremely high recycling value. However, traditional methods such as incineration or acid leaching are not only inefficient, but also cause serious environmental pollution. Among numerous cable granulator recycling technologies, cable granulators have gradually become an important choice in the field of cable recycling due to their high efficiency and environmental friendliness.

Cable granulator is a device that uses mechanical crushing and sorting technology to finely process discarded circuit boards

The core working principle of cable granulation is to use a series of crushing tools to perform multi-stage crushing of circuit boards, decomposing them into small granular mixtures. Subsequently, various physical separation methods such as vibration screening, wind separation, and magnetic separation are used to separate particles of different materials, thereby achieving effective recovery of metals and non metals. Specifically for cable recycling, the cable granulator can cut and break the cables connected to the cable granulator into particles, and then separate them from other electronic component fragments to recover copper and other metals from the cables.

The application of cable granulator in cable recycling has significant advantages

Firstly, the mechanical crushing method of cable granulator machine avoids the use of chemical reagents, effectively reducing the generation of secondary pollution. Compared to chemical methods such as acid leaching, the granulation process is more environmentally friendly and safe. Secondly, the granulator can achieve fine separation of cables and other electronic components, improving the efficiency and purity of resource recovery. The separated metal particles can be directly used as smelting raw materials, reducing production costs. In addition, the granulator can handle various types of cables, including power lines, signal lines, etc., with a wide range of applications and strong flexibility.

Cable granulators also face some challenges in the application process

For example, for complex circuit board structures, multiple crushing and sorting processes are required to achieve the desired separation effect, which may lead to an increase in processing costs. Meanwhile, the dust and noise generated during the crushing process also need to be effectively controlled to meet environmental standards. In addition, how to further improve the automation level of the granulator and reduce manual intervention is also a direction that needs to be studied and improved in the future.

In summary, copper wire granulator, as an efficient and environmentally friendly copper wire granulator separator recycling technology, has broad application prospects in the field of cable recycling. Through mechanical crushing and physical separation, metal resources in cables can be effectively recovered, reducing environmental pollution. Although there are still some challenges in the application process, with the continuous development and improvement of technology, cable granulators will play a more important role in the field of cable recycling, contributing to the realization of resource recycling and sustainable development.

cable granulator FAQs

What is the main function of a cable granulator? What is the process flow?

Function: Crush and sort discarded cable granulator boards, separate metals (copper, gold, etc.) from non metals (resin, glass fiber), and achieve resource recycling.

Typical process:

1. Preprocessing: Remove electronic components (such as capacitors and chips).
2. Rough crushing: Use a double axis shearing machine to crush the cable granulator board to 2050mm.
3. Fine crushing: Crushed into 15mm particles using a hammer crusher or turbine mill.
4. Sorting: Separate metals and non metals through vibrating screens, electrostatic sorting, or airflow sorting.

How to efficiently separate metals and non metals in cable granulator granulation?

Common sorting technology combinations:

Vibration screening: graded according to particle size (such as high density and small particle size of metal particles).

Electrostatic sorting: Using the difference in conductivity between metals and non metals, separate them in a high-voltage electric field (copper recovery rate>90%).

Airflow sorting: Light resin powder is blown away, and metal particles settle due to gravity.

Key point: It is necessary to control the humidity of the material (<5%) to avoid adhesion affecting the sorting effect.

What are the core devices of cable granulator? What should be noted when selecting?

Core equipment:

Crusher: Prioritize wear-resistant cutting tools (such as hard alloy) and dust-proof design.

Sorting system: electrostatic sorting machine (suitable for micron sized particles) or eddy current sorting machine (used for metal rich groups).

Dust removal device: to avoid pollution from glass fiber and resin dust.

Selection precautions:

The processing capacity (such as 15 tons/hour), power consumption (30100kW), and particle target size are matched.

The equipment needs to be corrosion-resistant (cable granulator contains halogen flame retardants).

How to reduce the release of harmful substances (such as brominated flame retardants) during the cable granulator crushing process?

Low temperature crushing: Crushing at 20 ℃ to 0 ℃ to suppress the volatilization of bromide.

Closed system: full negative pressure operation, combined with activated carbon adsorption or catalytic combustion exhaust gas treatment.

Wet crushing: Use water or inert liquid medium to reduce dust (but subsequent drying is required, increasing costs).

How to further purify the metal and non-metal particles after cable granulator granulation?

Metal purification:

Copper powder is refined by electrolysis (with a purity of 99.9%).

Precious metals (gold, silver) are recovered by cyanide leaching or acid dissolution methods.

Non metallic utilization:

Resin/fiberglass can be used as building material fillers (bromine content needs to be tested to ensure compliance with environmental standards).

Pyrolysis technology: high-temperature decomposition of resin to extract combustible gases, and the residue is used for brick making.