Step 1: Understanding the Concept:
Industrial mixers are designed to handle specific material phases (such as liquids, viscous pastes, or dry powders) to achieve a homogeneous blend.
Step 2: Detailed Explanation:
1. A double cone mixer consists of two conical vessels joined to a central cylindrical section.
2. It rotates on a central axis, causing the material inside to undergo tumble-mixing as the vessel spins.
3. This tumbling action is ideal for mixing free-flowing dry powders and granules of varying bulk densities and particle sizes.
4. It is not suitable for high-viscosity pastes, doughs, or liquids, which require high-shear impeller-driven or ribbon-blade mixers.
Step 3: Final Answer:
Double cone mixers are primarily used for dry powders and granules.