Application of Vibration Mill in Powder Processing

Date:2016-07-25 Source:zk corp Views:

With the development of modern powder processing science and technology, the demand of powder materials in various sectors of society is increasing. The important position of powder processing technology has become more and more prominent, and the preparation of powder materials, especially the preparation of ultrafine powder has put forward higher requirements. Grinding is a common method to obtain ultrafine powder. In the practical application of powder processing and application, the better effect of grinding equipments are raymond mill, disc mill (vertical mill), spinning mill, vibrating mill etc. Vibration mill is one of the most popular equipments in powder industry, which has the advantages of high efficiency, energy saving, uniform product size distribution and space saving. In addition, the oscillation amplitude of the body is very small, the manufacturing process is simple, filling rate and vibration frequency are high, so the unit volume productivity is large.
Vibration mill originated in Germany, the United States, the former Soviet Union, Japan, China also researches and develops from 50 to 60s in the last century. The production efficiency of vibration mill depends on the state of motion and energy distribution of the medium. The energy utilization rate is low because of the existence of the low energy region, so the cylinder diameter of the vibration mill is generally limited to 650mm. Because of the relatively large dynamic load when vibration mill works, Vibration grinding is fixed on of cement concrete anti vibration base with 10t quality to buffer the impact of the device on the base, equipment and anti vibration base by four or six groups special spring are located in the independent civil engineering.
Grinding effect of vibration mill mainly depends on the severe impact of grinding medium and continuous rotation (rotation and revolution) to make the material crumble quickly. The crushing effect is mainly produced by closed cycle movement of mill body, so in the vibration grinding machine grinding body filling rate is much higher compared to the rotary motion of the ball mill, ball mill filling rate is about 30%, while the vibration grinding can be as high as 80%. High fillng rate leads to more frequent impact of grinding, coupled with that the mill shaft vibration frequency up to 1500 times / min, so that the impact times of each grinding medium in the same time are more than the ball mill. Although the impact of vibration mill is much, the impact force of each grinding body is smaller than that of the ball mill.
Vibration mill sealed well and focuses on the the characteristics of impact crushing, grinding strength, high frequency fatigue damage, the impact energy is acting on the surface of the material to be milled with a larger amplitude to make the product particle size uniformity and nsely distribution, because of which makes vibration mill play good role in the powder grinding practice and has a good application prospect in non-metallic mineral powder processing.

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