What are the types of powder mixers?

Powder mixer is a widely used equipment in industrial production, which can be categorized into many types according to different mixing principles, structural designs and application scenarios. The following are the common classifications and characteristics:

Forced mixing of powders through the rotation of mechanical parts (e.g. blades, spirals, paddles).

Double Screw Conical Mixer

• Characteristics: double screw mixing in conical container, both convection, shear and diffusion mixing.
• Application: medicine, food, chemical industry (especially suitable for materials with large differences in specific gravity).

Horizontal Screw Belt Mixer

• Characteristics: Horizontal tank body is equipped with screw belt to promote the two-way movement of materials.
• Application: large quantities of dry powder or a small amount of liquid mixing (such as feed, building materials).

Planetary Mixer

• Characteristics: The mixing arm rotates around the main shaft while rotating at the same time, with high mixing uniformity.
• Application: high viscosity slurry or fine chemicals (such as battery materials, ceramic slurry).

Powder tumbling mixing is realized through the rotation of the container itself.

V-shape Mixer

• Characteristics: V-shaped container is divided into two sections, the material is divided and converged alternately when rotating.
• Application: uniform particles, good fluidity of the material (such as pharmaceuticals, food additives).

Three-dimensional movement mixer

• Characteristics: The container rotates at multiple angles, no dead-end mixing.
• Application: high uniformity requirements of the powder (such as metal powder, nano-materials).

Drum Mixer

• Characteristics: Horizontal or inclined drum rotates slowly, mixing by gravity.
• Application: easy mixing of ores, granular fertilizers.

Mixing is achieved by fluidizing the powder using airflow.

Fluidized Bed Mixer

• Characteristics: The gas passes through the porous plate to make the powder suspended, mixing quickly.
• Application: Light powder (such as milk powder, coffee powder) or easily lumped materials.

Pneumatic Jet Mixer

• Features: High pressure gas jet triggers turbulence, mixing highly active materials.
• Application: flammable and explosive or need inert gas protection occasions.

Through the high-speed rotor to generate shear force to break the agglomerate, to achieve microscopic mixing.

High speed shear mixer

• Features: rotor-stator structure, can handle high viscosity or liquid-containing powders.
• Application: Mixing of creams or slurries for cosmetics and pharmaceuticals.

Colloid Mill

• Features: ultra-fine crushing and mixing synchronization, particle size up to micron level.
• Applications: nanomaterials, lithium battery electrode slurry.

Mixing equipment designed for specific needs.

Static Mixer

• Characteristics: Fixed blades are installed in the pipe, and the material is divided and reorganized when flowing through.
• Application: Continuous production process (e.g. pre-mixing before chemical reaction).

Vacuum Mixer

• Features: Mixing in a vacuum environment to prevent oxidation or volatilization.
• Applications: electronic materials, high-end ceramic powders.

Gravity Mixing Silo

• Characteristics: Depend on the self-weight of the material to fall and mix, simple structure.
• Applications: preliminary mixing of grain, plastic granules.

• Material characteristics: particle size, density difference, fluidity, humidity, viscosity, etc.
• Mixing uniformity: CV (coefficient of variation) to be achieved.
• Capacity requirements: batch or continuous, range of throughput.
• Process environment: whether explosion-proof, vacuum, inert gas protection is required.
• Cleaning requirements: CIP/SIP functions are often required in the pharmaceutical and food industries.