How to sort and purify scrap aluminum materials when the scrap aluminum crusher crushes and recycles them

In the scrap aluminum crushing and recycling process, the use of scrap aluminum crusher crushing and sorting equipment can fully realize the efficient recycling of scrap aluminum materials, fully tap the value of scrap aluminum, and improve the quality of recycled aluminum products, which is of great importance. economic value. Waste aluminum materials need to be separated before recycling. The aluminum is separated from various impurities such as scrap copper, scrap iron, scrap plastic, dust, wood, paint, etc. to prepare for the subsequent process of recycled aluminum production. Many customers are not sure whether the material is Whether it can be completely sorted, I don’t know the specific sorting process. The scrap aluminum crusher manufacturer will introduce it below.

At present, most companies that separate scrap aluminum still use simple manual sorting, which has low efficiency, high labor intensity, and low recovery rate, resulting in serious waste of resources and serious damage to the environment, which has restricted the further development of my country's recycled aluminum industry. With the increase in labor costs, is rising year by year, this backward method can no longer adapt to the market, and there is an urgent need to vigorously develop and introduce advanced scrap aluminum separation technology. After years of practical application, the following two sorting methods are currently used to sort scrap aluminum materials.

1. Magnetic sorting.

Magnetic sorting mainly uses a magnetic sorting machine combined with a conveyor belt to complete the operation. This equipment technology is mainly used to separate scrap steel and other magnetic materials from scrap aluminum. Iron is the main harmful element in recycled aluminum, and it must be removed to the greatest extent before smelting. For scrap aluminum, magnetic separation is the most effective technology for separating scrap steel. The magnetic separation method has a simple process, low investment, obvious effects, and is easy to be adopted. Due to the strong impact and crushing of the scrap aluminum crusher, the volume of the metal material sent out is not large. At this time, the magnetic separator starts working. According to different magnetic sources, magnetic separation can be divided into two categories: permanent magnet and electromagnetic. Permanent magnet separation has a simple structure and is light in weight; it does not require rectification and other control devices; it has a uniform magnetic field and high separation efficiency; it is easy to maintain; it can work continuously at higher temperatures (70C), so permanent magnet separation technology is the most widely used.

2. Eddy current sorting.
Eddy current separator
Eddy current sorting uses metal materials when they are in an alternating magnetic field, eddy currents will be formed inside them, and the magnetic field will produce a repulsive force on the metal with eddy currents, that is, Loren magnetic force. Under the action of the entire force, Can sort metals of different materials. When the induced magnetic field acts on different metals, the rebound force is also different. At this time, the metal particles will be ejected a certain distance from the end of the normal belt conveyor track. Non-metals are subject to zero Loren magnetic force, while different non-ferrous metals are subject to different Loren magnetic forces due to different conductivities and densities, resulting in different flat throwing motion distances, so they can be separated. Eddy current separation has a large investment, but has high separation efficiency. It can separate aluminum waste from non-metals such as plastics, glass, rubber, etc., and can also separate aluminum from other non-ferrous metals such as copper, magnesium, zinc, etc. The separation efficiency is not high for small particles below 10mm, because the Loren magnetic force generated by these small particles is very small, making it difficult to separate them.