The difference between ultrafine pulverizer and traditional pulverizer

Ultrafine pulverizers are very different from traditional pulverizers. It is not a pulverizer that can make micro-powder particles is an ultra-fine pulverizer, because most pulverizers pulverize materials in the traditional sense, such as ores, grains, etc. Moreover, the requirements for fineness are not high, generally around 80-100 mesh, and there is no concept of ultra-fine. Moreover, the phenomenon of over-grinding is regarded as a disadvantageous factor to reduce wear and heat during the grinding process, and try to avoid it as much as possible.

Therefore, in the design and use of traditional pulverizers, the content of fine powder is minimized, which can reduce the heat of the machine and reduce the wear of pulverizing parts. Increase material flow. Therefore, this type of pulverizer, which is modified from a general pulverizer to increase the rotational speed and reduce the pulverization gap, is not suitable for use as an ultrafine pulverizer. If this type of pulverizer is used as an ultra-fine pulverizer, there will inevitably be high heat, excessive wear, and easy damage to the motor. The reason is that the machine is in an extraordinary working state. This phenomenon is often encountered in pharmaceutical ultrafine pulverizers.

The ultrafine pulverizer is different from the traditional pulverizer. Its principle is designed based on the processing of ultrafine powder (ultrafine powder is basically larger than 325 mesh). Such as jet mill, resonance mill (vibration mill), stirring mill, etc. The ultrafine pulverizer is based on the dispersion system of ultrafine powder as the research object and implements energy input. The specific surface area of the powder increases proportional to the square of the energy input. Therefore, ultrafine pulverizers are mostly media grinding and grinding methods. It is very different from the traditional grinder.

The difference in use is that it has less heat generation, slow temperature rise, uniform discharge particle size, no mixed state of large particles and fine powder, and reasonable energy consumption. Among them, the lowest energy consumption is the resonance mill, or high-frequency resonance mill, and the relatively high energy is the jet mill. Jet mill to achieve pulverization with the help of classifier. Classifiers are also an important part of the attrition mill concept. It acts like a screen in a conventional shredder. In the process of choosing an ultrafine pulverizer, you must first have a basic concept of pulverizers and ultrafine pulverizers to avoid entering misunderstandings.

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