Aluminum Scrap Recycling: Single Shaft Shredder VS Double Shaft Shredder

In the aluminum scrap recycling process, one of the key tasks in the pretreatment stage is to effectively crush and process waste aluminum products. Single-shaft shredders and double-shaft shredders are two common equipment to choose. They have significant differences in structure, function and application. When selecting aluminum scrap recycling equipment, whether to use a single-shaft or double-shaft shredder needs to be carefully considered based on specific needs and material characteristics.

Single-shaft shredder for aluminum scrap

Structure and working principle:

The single-shaft shredder has the simple and compact structure of a rotating main shaft equipped with cutters or blades. Aluminum products enter the single-shaft shredder through the feeding port and are crushed into small aluminum particles by the blades on the rotating main shaft.

Applicable materials:

The single-shaft shredder is suitable for relatively hard materials, such as discarded aluminum products, plastics, wood, etc. For aluminum chips crushing, especially relatively regular and hard aluminum blocks or aluminum profiles, single-shaft shredder is an effective choice.

Energy consumption and maintenance:

Compared with double-shaft shredder, single-shaft shredder usually has lower energy consumption, and the maintenance and operation are relatively simple, making it easier to achieve automatic control.

Output particle size:

The output particle size of the single-shaft shredder is usually more uniform and less fine, which is suitable for the needs of subsequent processing steps, but some dust may be generated when processing harder materials.

Double-shaft shredder for aluminum scrap

Structure and working principle:

The double-shaft shredder consists of two parallel rotating main shaft, each equipped with cutters or blades. This structure makes the double-shaft shredder more powerful and stable.

Applicable materials:

The double-shaft shredder is suitable for a wider range of materials, including softer materials such as plastic film, paper, and scrap aluminum products. Double-shaft shredder may be more suitable for aluminum chips pretreatment, especially for aluminum scrap with complex shapes and mixed with other materials.

Energy consumption and maintenance:

Compared with single-shaft shredder, double-shaft shredder may require more energy, and due to the more complex structure, the maintenance and operation are relatively cumbersome. However, when processing certain materials, its powerful shredding ability will significantly improve overall work efficiency.

Output particle size:

Since the double-shaft shredder has more shredding blades and more complex shredding actions, the output particle size of the double-shaft shredder may be more uniform and can adapt to a wider variety of materials, but the output size is larger than that of the single-shaft shredder.

Conclusion

When choosing a single-shaft shredder or double-shaft shredder, the following factors need to be considered comprehensively: the type, shape, size and hardness of materials, the requirements for production capacity, energy consumption, equipment maintenance and cost, and etc,. For smaller scale and regular aluminum scrap, a single-shat shredder may be an ideal choice. While for large-scale aluminum scrap with complex, mixed materials, a double-shaft shredder may be more suitable for achieving higher processing efficiency and product quality.

The selection of equipment should be based on specific circumstances and needs to ensure the best performance and economic benefits of the aluminum scrap recycling equipment.