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Application and working principle of horizontal sand mill
Release time:
2024-09-11
The working current of the horizontal sand mill is the main indicator of the operating condition of the horizontal sand mill. The main motor provides energy input, and the dispersion plate fully agitates the grinding medium and the slurry to provide kinetic energy, so that the slurry is fully dispersed and ground to achieve the desired grinding effect.
Horizontal sand millThe operating current is the main indicator of the operating condition of the horizontal sand mill. The main motor provides energy input, and the dispersion plate fully agitates the grinding medium and the slurry to provide kinetic energy, so that the slurry is fully dispersed and ground to achieve the desired grinding effect. In actual operation, the operating current of the sand mill is proportional to the quality of the grinding media and the grinding slurry. In order to ensure the stability of the operating current of the sand mill, it is necessary to determine the reasonable medium filling rate, feed rate and slurry viscosity.
The effect of medium filling rate on the operating current of the sand mill, the grinding medium of the horizontal sand mill generally uses silicic acid and oxidized aluminum beads. The filling rate of grinding media is one of the important factors affecting the operation of horizontal sander.
When the filling rate of grinding medium increases from 40% to 75%, the running current curve shows an upward trend, which reflects that the grinding medium in the mill is fully stirred and the energy demand changes greatly. The filling rate is 75%-85%, and the operating current curve changes smoothly, reflecting that the medium in the sander has reached a balance point and the energy demand is stable. The filling rate is greater than 85%, and the change of operating current curve shows a downward trend, which reflects that the grinding medium in the sander is excessive, and there is a slip phenomenon between the grinding medium and the dispersion disc. The dispersion disc cannot drive all the grinding media to move, and the energy consumption is reduced. Therefore, according to the current change curve of the sander, the appropriate filling rate of the grinding medium is 80%.
Horizontal sand mill is a horizontal wet continuous production ultrafine particle disperser. Stir in advance and return the raw materials to the grinding tank of the host machine. The grinding tank is filled with a large number of grinding media. For example, glass beads rotate at high speed through dispersion blades to give sufficient momentum to the grinding media and impact shear the dispersed particles to achieve the dispersion effect. Through a special separation device, the dispersed grinding media are separated from each other. Since it does not require a high degree of operating skills like a three-roller machine, it can obtain uniform and excellent quality, and can be produced continuously in large quantities, so it can improve quality and reduce costs, and can also be applied to the dispersion of high-viscosity substances, so it can be applied to coatings and inks., Medicine, food, cosmetics, pesticides and other industries.
In order to achieve a flat appearance, the solid particles dispersed in the liquid are made to be in the form of fine particles. Increased reflectivity, resulting in gloss and improved coverage, as in paints, inks, pastes, etc. Increase the rate and uniformity of the reaction and increase the surface area of suspended particles in the liquid. For example, a particulate hardener is added to the resin, or a powdered particulate material is added to the chemical reaction. In order to prolong the precipitation time, the small particles are suspended in the liquid to achieve the purpose of temporary suspension, such as water suspension of pesticides, which can increase the diffusion area to prolong the effect.
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