Powder Processing

What is Powder?

Powder refers to materials that exist in a fine particulate state under normal conditions. Specifically, powders are aggregates composed of numerous solid particles and the gaps between them. Examples include flour, soy milk powder, milk powder, coffee powder, rice flour, wheat flour, soybean powder, and salt from food; river sand, soil, dust, and sandstorms from nature; and gunpowder, cement, pigments, pharmaceuticals, and fertilizers from industrial products. Their common characteristics include a large specific surface area and being composed of many particles of varying sizes with gaps between them.

Powder Processing

Powder processing involves a range of techniques or technologies related to powders, such as ultrafine grinding, precise classification, high homogenization, dispersion, composite coating, modification, drying, sintering, storage, packaging, and transportation. These powder processing technologies have been widely applied in various fields or industries such as electronics, aerospace, new materials, new energy, bioengineering, building materials, machinery, plastics, rubber, mining, metallurgy, pharmaceuticals, food, feed, pesticides, and resource recycling. Powder processing has become an indispensable foundational technology closely related to modern science and technology and rooted in traditional industries.

Powder-Related Processing Techniques

1. Conveying, Storage, Feeding: Silo, vibrating feeder, screw feeder
2. Grinding: Ball mill, pin mill, jet mill
3. Mixing: Container rotation, forced stirring type
4. Drying: Airflow drying, spray drying
5. Granulation and Forming: Rotational stirring, extrusion
6. Classification and Separation: Air classification, vibrating screen, gravity separation
7. Dust Collection: Collectors, cyclone separators

Powder-Related Industries and Processing Procedures

1. Coal and Mining: Grinding, classification, conveying
2. Food: Storage, grinding, classification, mixing, sterilization, dissolution, crystallization, mixing, sterilization
3. Paper and Pulp: Mixing, filtration, drying
4. Rubber and Polymers: Grinding, classification, mixing, filtration
5. Pigments and Fillers: Grinding, classification, mixing, crystallization, filtration, drying
6. Chemical Industry: Grinding, dissolution, crystallization, filtration, drying
7. Steel: Grinding, classification, mixing, granulation, sintering
8. Electronic Materials: Mixing, forming, sintering, grinding, mixing, grinding
9. Pharmaceuticals: Mixing, forming, grinding, classification, mixing, granulation, forming
10. Battery Materials: Mixing, sintering, grinding, classification, mixing, magnetic separation

These techniques and processes are essential in the production and processing of various materials and products, ensuring efficiency, quality, and functionality.