Granulation is the operation of processing materials such as powder state, molten state, solution state, etc. to form granular objects with a certain shape and size. In the pharmaceutical industry, almost all preparations of solid dosage forms are inseparable from the process of granulation. The granules produced may be final products, such as granules, or intermediate products, such as tablets. Vertical pellet mill is the equipment to realize this process. Widely used in pharmaceutical, chemical, food industry and other industries.

Today's wet granulation equipment has developed to high-speed wet granulation, and the high-speed mixing Vertical pellet mill is the fastest-growing and most widely used granulation equipment in recent years, and it is also the most economical. It combines the mixing and granulation process together, and it is carried out in a fully enclosed container.

It is characterized by saving time and meeting GMP requirements, good mixing effect, high production efficiency, good particle and sphericity, good fluidity, easy cleaning and no pollution, stable content and low energy consumption. It is a kind of equipment with large granulation capacity, fast speed, good granulation and low energy consumption, which is very popular among users. At present, several solid preparation processes have accounted for 70% of all solid preparation granulation equipment. However, it has certain requirements for the granulated material.