Do you know how to choose grinding beads for sand mill?
In the field of industrial production, sand mill as one of the key equipment, widely used in coatings, inks, pigments, cosmetics, food and pharmaceuticals and other industries in the dispersion and grinding process. Grinding beads, as the core media in the sand mill, its selection not only directly affects the fineness, dispersion and production efficiency of the product, but also relates to the degree of wear and tear of the equipment and operating costs. Therefore, how to scientifically and reasonably select the grinding beads has become an important issue that every process engineer and production enterprise must face.
I. The particle size and shape of grinding beads
The particle size and shape of grinding beads have a direct impact on the grinding effect. The selection of particle size should be based on the fineness requirements of the target product and the model of the equipment to determine. Generally speaking, the smaller the particle size, the finer the grinding effect, but the corresponding production efficiency and grinding media loss will also increase.
In terms of shape, the common ones are spherical, cylindrical and irregular shape. Spherical grinding beads have good fluidity, reduce friction and wear, and are suitable for most occasions; cylindrical grinding beads provide higher crushing efficiency and are suitable for the coarse grinding stage; irregularly shaped grinding beads can improve the grinding efficiency, but may increase the wear and noise of the equipment.
II. The density and hardness of grinding beads
The density and hardness of the grinding beads are directly related to their movement state in the sand mill and the strength of their collision with the material. Higher density grinding beads can provide stronger impact force, which is conducive to the crushing and dispersion of materials; while the hardness determines the wear resistance and service life of grinding beads.
When choosing, it is necessary to consider the nature of the material, the needs of the grinding process and the capacity of the equipment. For easy to wear materials or high hardness material grinding, should choose high hardness grinding beads; and in the grinding efficiency has high requirements of the occasion, may need to consider the density and hardness of the balance.
In summary, the selection of grinding beads for sand mills is a complex process involving many factors. Through comprehensive consideration of material, particle size, shape, density, hardness, economy and environmental protection and other factors, and combined with experimental verification and continuous optimisation, in order to select the most suitable for their production needs of the grinding beads, for the enterprise's productivity and product quality to provide a strong guarantee.