Powder surface modification technology
Powder surface modification involves treating the powder surface using physical, chemical, or mechanical methods. The goal is to alter its physical and chemical properties or
Powerful vortex flow field, instantly grinding and coating
The tapered rotor and stator are adopted, and the gap between the rotor and the stator can be adjusted; the powerful vortex flow field, the linear speed of the rotor can reach 120 m/s, which is especially suitable for the dispersion, reduction and crushing of agglomerated materials. The material is impacted, sheared and rubbed at high speed between the rotor and the stator to complete the grinding and coating process.
This continuous powder surface coating system is designed on the base of German know how with Chinese equipment, and can be used for coating of various powders like calcium carbonate (GCC, PCC), kaolin, talc, mica, graphite, barium sulfate, white carbon black, magnesium hydrate, zinc oxide, aluminum oxide, and is suitable for a variety of solid/liquid coating agents, like aluminate coupling agent, titanate coupling agent, silane coupling agent and stearic acid. Coating machine consists of three units of mixing rooms. High-speed rotation creates great vortex flow inside these special-shaped rooms. Powder and coating agent are mixed in the high-speed gas-solid vortex flows. Coating machine with both surface coating and particle dispersing functions is suitable for various powders with different fineness, and has a unique coating effect for the materials with small apparent specific gravity and high volume to weight ratio. Automatic temperature control system ensures stable high temperature for coating agent melting into liquid and mixing with uncoated powder. Heating and cooling of powder and coating agent are completed in one machine, which does not need independent cooling system. High utilization ratio of coating agent, high powder-coated rate, high activation grade, low energy consumption, and very few agglomerates in final coated product. The whole system is operated under negative pressure, no dust emission, and low labor intensity.
| Model | 300 | 500 | 750 | 1000 | 1250 |
|---|---|---|---|---|---|
| Speed（m/s） | 100-120 | 100-120 | 100-120 | 100-120 | 100-120 |
| Motor Power（kw） | 22 | 45 | 75 | 110 | 132 |
| Blade（layer） | 4 | 4 | 6 | 6 | 6 |
| Fineness（mesh） | 50-2500 | 50-2500 | 50-2500 | 50-2500 | 50-2500 |
Note: The production capacity is closely related to the particle size, specific gravity, hardness, moisture and other indicators of the raw materials. The above is only for selection reference.
Powder surface modification involves treating the powder surface using physical, chemical, or mechanical methods. The goal is to alter its physical and chemical properties or
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