Working principle of powder making equipment and its industrial application

As one of the indispensable key equipments in modern industry, the working principle of powder making equipment is mainly based on physical crushing and classification technology. This kind of equipment is widely used in metallurgy, building materials, chemical industry, mining and other fields, used to convert bulk materials into powder or ultrafine powder to meet the needs of different industrial production.

The working principle of powder making equipment can be summarized as the following main steps:

First, the material is fed into the inlet of the equipment. This step is usually realized by a vibrating feeder or other continuous feeding device, which ensures that the material can enter the crushing or grinding area of the equipment evenly and continuously. During the feeding process, parameters such as particle size and moisture content of the material are strictly controlled to ensure smooth subsequent processing.

Next, the material enters the crushing or grinding area of the equipment. Take the ultra-fine mill as an example, its core component is the high-speed rotating grinding disk. The material is projected into the grinding groove around the grinding disk under the action of centrifugal force. The strong centrifugal force and friction generated by the high-speed rotation of the grinding disk makes the material continuously broken, friction and mixing in the grinding groove. At the same time, the rolling crushing of the grinding rollers further intensifies the crushing effect of the materials. During this process, the particle size of the material gradually decreases and finally reaches the required powder size.

While crushing or grinding, the equipment is also equipped with a grading system. The main function of the classification system is to separate the crushed material and ensure that only the required fines can be passed on to the next process. The classification process is usually realized through a multi-stage classification structure, each classifier is equipped with a coarse grinding area and a fine grinding area. After initial grinding in the coarse grinding zone, the material enters the medium grinding zone for more detailed cutting and rubbing. Finally, in the fine grinding area, the material is further refined to form the desired ultra-fine powder.

During the grading process, materials that are too fine to be coarse will fall back into the grinding chamber for regrinding, while powders with finenesses that meet the specifications enter the cyclone collector with the air flow. The cyclone collector utilizes the rotating effect of the airflow to separate the powder from the airflow and discharges it through the powder outlet. In this way, the finished powder is obtained.

In addition, the powder making equipment is equipped with a wind circuit circulation system. During the grinding process, a fan blows air into the main housing, lifting the powder and promoting its circulation in the air circuit. This system not only helps to separate and collect the powder, but also maintains the negative pressure of the equipment and prevents the dust from escaping. At the same time, the increased air volume in the circulating air circuit will be partially discharged through the exhaust gas pipe and purified before being discharged into the atmosphere to protect the environment.

To summarize, the working principle of powder making equipment involves multiple links such as material feeding, crushing (grinding), grading, collecting and air circulation. These links collaborate and cooperate with each other, and together they achieve the goal of transforming lumpy materials into powder or ultrafine powder.