The sand mill is the most adaptable, advanced, and efficient grinding equipment for materials. The grinding chamber is the narrowest, the lever clearance is the smallest, and the grinding energy is the densest. Combined with a high-performance cooling system and automatic control system, it can achieve continuous processing and discharge of materials. The grinding efficiency of different sand mills is completely different, so what are the factors that affect the grinding efficiency of sand mills?
First, the rotor structure of the sander. During the operation of the sand mill, the shape and structure of the rotor have a significant impact on the grinding efficiency. The rotor structure of the sand mill is rod pin type, turbine type, disc type, etc. It is generally accepted that the grinding efficiency of the rod pin type sand mill is better than other types. However, the same rod pin sanding machine also has different differences. The distance between the top of the rod pin on the rotor and the grinding inner barrel, the number of rod pins on the rotor, the arrangement of the rod pins, and the distance between the rod pins are one of the main factors that affect the grinding effect of the horizontal sanding machine.
Disc sander
Secondly, the speed of the sand mill. The speed of the sand mill is also one of the important factors affecting the grinding efficiency of the legal entity. In general, the higher the rotational speed of the grinding machine, the higher the grinding efficiency. An increase in temperature will have a certain impact on the particles, which is unfavorable for obtaining better particles. High temperature causes aggregation of particle molecules.; But if the rotor speed of the sand mill is higher, the relative energy consumption is greater, and the wear on the sand mill rotor, grinding barrel, and grinding medium is also greater, so the cost correspondingly increases. Moreover, wear and collision can lead to an increase in temperature. In the face of this situation, dual power grinding equipment has emerged on the market. This type of equipment not only improves grinding efficiency, but also reduces the wear of grinding equipment and media.
Thirdly, the selection of grinding media. Different grinding media have different densities, hardness, wear resistance, etc. When grinding different materials, different grinding media should be used. The simplest point is that if the hardness of the material you are grinding is similar to that of the grinding medium, it is obvious that its grinding efficiency will also be relatively poor. For our country, the media generally choose zirconia balls, alumina balls, zirconium silicate balls, glass balls, and metal balls. Zirconia balls are commonly used in electronic ceramics, magnetic materials, inks, dyes, and specialty chemical industries; Zirconium silicate balls can also be used for dispersed grinding of coatings, paints, inks, and other materials. In addition to material, the size of the grinding medium also determines the number of contact points between the grinding medium and the color paste. The smaller the particle size of the grinding medium, the more contact points it has at the same volume, the higher the theoretical grinding efficiency.
Grinding medium
The last one is grinding materials. The grinding efficiency varies greatly depending on the type of material and solvent used. Taking the grinding process of paint color paste as an example, different types of color paste have different grinding processes due to their different pigment types (inorganic pigments, organic pigments, carbon black), fineness requirements, paste viscosity, and other parameters. Choosing a suitable color paste grinding process can significantly improve the grinding efficiency of the color paste, improve the grinding effect of the color paste, and have very important significance for improving the stability of product quality.