Powder Mixing

Powder mixing is an important part of any powder processing industry. The equipment and the process is simpler than many other mixing processes, the type of mixer depends on the texture of the ingredients. The modern powder mixers though have to perform other functions like, coating or granulating apart from simple mixing that makes the modern equipment a little more complex.

For Free Flowing Powders - The process is called convective mixing. The ingredients are layered one upon the other in the mixer. Ribbon or screw mixing tool is used. With this tool the ingredients are transported to the mixer continuously being mixed. The duration and speed determine the homogeneity.

For Cohesive Powders - The process is called intensive mixing. Convective mixing simply mixes the powders at a macroscopic level. It is not able to break through the cohesiveness of the powder that is actually caused by the liquid bridges. To break these structures, excessive forces are applied using higher speed and impact like choppers and knives. These types of impact mixers are used for almost all-industrial purposes. Shear mixers are also used for the purpose.