In the process of industrial waste treatment, screening is an extremely critical pre-processing link, which directly affects the efficiency and quality of subsequent sorting and recycling. With its unique structural design and working characteristics, the Trommel screen has become one of the core equipment for industrial waste screening, and plays an irreplaceable and important role in the entire treatment system. The core role of the Trommel screen in industrial waste screening:

1. Achieve efficient preliminary screening

Trommel Screen

Industrial waste has complex components, including metals, plastics, wood, stones, slag and other materials, and the particle sizes vary. The Trommel screen can quickly classify these mixed wastes according to particle size, and separate large pieces of construction waste, waste equipment, etc. from fine sand and gravel, debris, etc. In the treatment of industrial waste generated by some metal processing enterprises, the Trommel screen can quickly separate large pieces of scrap metal parts from attached fine metal debris and dust, laying the foundation for subsequent more refined metal sorting, greatly improving the efficiency of the overall treatment process.

2. Provide high-quality pretreatment for subsequent sorting processes

Subsequent sorting equipment, such as magnetic separators, eddy current separators, AI visual separators, etc., have certain requirements for the particle size and purity of the materials entering the equipment. The Trommel screen can process the garbage to a suitable particle size range through screening, remove impurities that are too large or too small, and prevent these impurities from clogging or wearing the subsequent sorting equipment. For example, in the plastic sorting process, if there are too large lumps in the material, it may jam the conveyor belt of the AI visual separator and affect the normal operation of the equipment; and dust with too small a particle size will interfere with the accuracy of optical recognition. After pretreatment with the Trommel screen, the particle size of the material entering the plastic sorting equipment is uniform, which can significantly improve the sorting accuracy and stability of the equipment.

3. Improve resource recycling utilization rate

Trommel Screen

Through the effective screening of the Trommel screen, materials of different particle sizes are separated, which is convenient for adopting appropriate recycling methods for different types of materials. For organic waste and dust with smaller particle sizes, they can be composted or incinerated for power generation; while recyclable materials such as metals and plastics with larger particle sizes can be recycled and reprocessed more efficiently. Taking the treatment of waste electronic waste as an example, after the Trommel screen classifies the electronic waste by particle size, the fine circuit board debris can be extracted from the precious metals through special technology, while the larger metal shell can be directly smelted, thereby improving the recycling rate of various resources in electronic waste and maximizing the utilization of resources.

4. Adapt to the complex and diverse characteristics of industrial waste

Industrial waste comes from a wide range of sources and has different properties. Some are corrosive, some are relatively humid, and some have high hardness. The Trommel screen uses wear-resistant and corrosion-resistant materials to make screens and Trommels, which can adapt to industrial waste of different properties. For wet industrial waste, the rotating motion of the Trommel screen can prevent the material from adhering to the screen and ensure the normal screening; for garbage with higher hardness, the screen made of wear-resistant materials can withstand greater impact and extend the service life of the equipment. In the treatment of organic waste containing a large amount of water generated by food processing enterprises, and in the treatment of ore waste with high hardness generated by mining, the Trommel screen has shown good adaptability and stability.

5. Advantages of Trommel screen over other screening equipment

Trommel Screen

Compared with vibrating screens, Trommel screens run more smoothly and have lower noise. The vibrating screen relies on the exciting force generated by the vibration motor to vibrate the screen surface, which will generate a lot of noise during operation. At the same time, the vibration will also cause a large impact on the structure of the equipment itself, shortening the service life of the equipment. The Trommel screen achieves screening through the rotation of the Trommel, runs smoothly, causes less loss to the equipment, and has lower maintenance costs. In addition, the screening efficiency of the Trommel screen is obviously superior in the treatment of large-scale industrial waste. It can continuously screen a large amount of waste, which is suitable for large-scale industrial waste treatment scenarios.

Compared with fixed screens, the screening effect of Trommel screens is better. The screen surface of the fixed screen is fixed, and the material relies on its own gravity to pass through the screen hole. The screening efficiency is low and the screen hole is prone to clogging. The Trommel screen uses a rotating motion to make the material roll and move continuously on the screen, which can effectively avoid clogging of the screen hole and improve the efficiency and accuracy of screening. The advantages of Trommel screens are more prominent when dealing with industrial waste that contains a lot of impurities and has irregular shapes.

Trommel screens play an important role in industrial waste screening, including efficient preliminary screening, high-quality pretreatment, improving resource recycling and adapting to complex waste characteristics. Its unique advantages over other screening equipment have made it widely used in the field of industrial waste treatment. With the continuous development of industrial waste treatment technology and the increasing requirements for environmental protection, Trommel screens will continue to innovate and improve technology, play a more important role in the screening of industrial waste, and contribute to the reduction, resource utilization and harmless treatment of industrial waste.

Author : Wanqin Zou

Zou Wanqin is a news column writer. She has more than 6 years of experience in the garbage screening and crushing machinery industry, has a deep understanding of environmental protection machinery, and is happy to share the latest machinery and latest technological developments in the industry.