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What is dry granulation?
Fine powders can be processed into densified sheets in the Chilsonator by the use of mechanical pressure exerted on two compacting rolls. The densified sheets can then be granulated to any desired mesh size.

Why granulation?
icon To produce uniform blends or mixtures. Mixtures of various particles tend to segregate in transport or handling because of differences in particle size, shape and density. The Chilsonator can produce granules of uniform consistency, which eliminates segregation and facilitates consistent analysis.
icon To produce uniform particle size range. The particle size range of the product can be selected to suit individual requirements and varied according to process needs.
icon To control dust. Dust/Powder is generally difficult to handle and may pose problems with respect to exposure. Cross contamination and product loss can be eliminated.
icon To adjust flow properties. Granular materials flow more easily and resist bridging and caking. Higher flow rates and more even fill can be achieved in many cases.
icon To control bulk density. Increased bulk density may be desirable for storage, transport or packaging. Marked increases in bulk density can usually be achieved and controlled within certain limits.
icon To control particle hardness. The characteristics of particle hardness can sometimes be adjusted to suit the product needs. Crush strength and disintegration can be important properties brought under more rigid control.
icon To improve solution or dispersion rates. Granular materials absorb liquids more readily than do many powders. Therefore, granular materials will dissolve or disperse more easily and quickly.

How does it work?
The basic concept of compaction (seen in the illustration). Is to force fine powders between two counter rotating rolls. As the volume decreases through the region of maximum pressure, the material is formed into a solid compact or sheet.

Some of the factors controlling the compaction process are roll surface, diameter, peripheral speed, separating force or pressure capabilities, feed screw design and basic compaction characteristics of material being processed.

In most applications, the product compacted by the Chilsonator must be granulated to a uniform particle size distribution. This can be most efficiently achieved with a FitzMill granulator which is designed with maximum flexibility enabling control of the size reduction of the compact with predictable and repeatable results.

Recycle System - In order to eliminate essentially all fines and overs it is possible to design the dry granulation system to include a screener and recycle system. This provides tremendous control of the final particle size and density.

 
630-530-3333 Chilsonator