Question:

Double cone mixers are used for ---------.

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Tumble mixers (including Double Cone and V-mixers) provide gentle, low-shear mixing, making them ideal for fragile dry powders that degrade under mechanical shear.
  • Liquid
  • Powder
  • Dough and paste
  • Semi-liquid
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The Correct Option is B

Solution and Explanation



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.
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