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What are the Reasons That Affect The Granulation Quality of The Dry Granulator?

Aug. 30, 2021

Dry granulator is a dry granulation process that uses pressure to make solid materials gather together. This is done by kneading the material by two counter-rotating rollers, which are driven by an eccentric sleeve or hydraulic system. When the solid material is squeezed by the rollers, the air between the powder particles is first swept to re-arrange the particles to eliminate the empty space between the materials. As a China Pharmaceutical Equipment Supplier, let me share with you.

In order to reduce breeding costs and increase economic benefits, more and more individual farmers and some small farms will choose to purchase dry pellet mills to make feed.

Dry granulator is a dry granulation process that uses pressure to make solid materials gather together. This is done by kneading the material by two counter-rotating rollers, which are driven by an eccentric sleeve or hydraulic system.

Dry Granulation Machine

Dry Granulation Machine

When the solid material is squeezed by the pair of rollers, the air between the powder particles is first swept to rearrange the particles to eliminate the empty space between the materials. When the brittle material is squeezed by the pair of rollers, some particles are crushed, and the fine powder fills the space between the particles. Under this condition, the new free chemical bonds on the outside cannot be quickly filled with atoms or molecules from the surrounding atmosphere. The newly generated appearances touch each other and form a powerful reorganization key.

When the plastic material is squeezed by the pair of rollers, the particles will deform or move, and strong van der Was gravitation will occur. So let's summarize what conditions will affect the granulation quality of the dry granulator?

(1) In order to get a better extrusion effect, the feed force should be of different sizes, and the suitable range should be controlled within 0.1-1mm. Too fine material (less than 0.1mm) contains too much air, which affects the compactness of the finished material, and affects the extrusion process (causing increased vibration of the extruder). Too large materials require a lot of crushing energy. . Therefore, the feed size must be well controlled.

(2) The hardness or plasticity of the material affects the pressure used in the extrusion process. Some materials, such as diamine phosphate and urea, have better plasticity, and the effect of extrusion into pellets is better. However, potassium sulfate, ammonium sulfate, and phosphate rock powder have poor plasticity and are not easy to be extruded into granules. In order to achieve better results, an appropriate amount of adhesive can be added. Urea or a small amount of water can play the role of adhesion.

Since ancient times, Chinese medicine has been favored by Chinese people because of its small side effects. However, in the treatment of Chinese medicinal materials, we have been looking for processing methods to make it more acceptable for patients to take them. For some patients, it is often difficult to drink traditional Chinese medicine decoctions. In addition to the long-term boiling process, the taste is not good, which is torture. After a long period of exploration, a kind of dry granulator that changed the production of traditional Chinese medicine was born. It is the laboratory dry granulator. Our company also has Dry Granulation Machine on sale, welcome to contact us.


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