Answers to 10 common questions about batch mixing
Proper mixing is one key to control quality in many processing operations. In this first of a question-and-answer series on common powder and bulk solids handling problems, VORTEX engineer answers 10 of the batch mixing questions which are commonly asked.
Choosing a batch mixer
Determining mix quality
Other mixing problems
7. My materials goes through a wet granulation step in a tumble blender to avoid segregation downstream. But the granulated material contains agglomerates, formed by liquid droplets in the blender, and I have to treat the agglomerates before I can use the material downstream. How can I avoid the agglomerates.
Choose a mixer that can handle dry materials and pastes
8. Most of the processes in my specialty chemical company are batch and handle only dry materials. However, some materials go through a phaste phase. Can one mixer handle both dry materials and pastes?
9. To properly package our material, we add an active ingredient in less than 5 percent concentration to a carrier that acts almost like a diluent. What kind of mixer should we use, and how should we add the ingredients to get good mixing?
Mixing and direct compression
10. Our pharmaceutical process currently requires a granulation step. We’d like to skip this step and the processing and equipment it requires and go to direct compression. What should we consider before making this change?