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The difference between liquid nitrogen cryogenic pulverizer and room temperature plastic pulverizer
Time:2025-07-08
Difference Comparison Table：
| Comparison Dimension | Liquid Nitrogen Cryogenic Grinding Mill | Room Temperature Plastic Grinding Mill |
|---|---|---|
| Working Principle | Utilizes liquid nitrogen (-196℃) to embrittle materials, achieving ultra-fine grinding through low-temperature impact and shear forces. | Relies on mechanical force (high-speed rotation of rotor/grinding disc) to grind materials via impact and friction. |
| Operating Temperature | -196℃ to 0℃ (adjustable, requires liquid nitrogen cooling system). | Room temperature (minimal environmental temperature impact, no additional temperature control needed). |
| Suitable Materials | High-toughness/high-elasticity plastics (e.g., silicone rubber, TPE), heat-sensitive materials, and engineering plastics/rubbers requiring ultra-fine grinding. | Conventional soft/hard plastics (e.g., PVC, PE, PS), paper, wood chips, and non-heat-sensitive materials. |
| Grinding Fineness | 40-300 mesh (micron-level, suitable for ultra-fine grinding scenarios). | 20-120 mesh (narrow adjustability range, meets conventional powder demands). |
| Equipment Cost | High (requires special components like liquid nitrogen storage tanks and low-temperature grinding chambers). | Low (simple structure, no temperature control components). |
| Operating Cost | High (liquid nitrogen consumption + energy consumption of low-temperature system). | Low (only electricity cost, no cooling medium expense). |
| Production Efficiency/Yield | Medium-low (pre-cooling process increases time cost, batch processing). | High (continuous feeding, suitable for large-scale production). |
| Typical Applications | Electronic materials (ultra-fine plastic powders), aerospace (special rubber grinding), coatings (nanoscale filler preparation). | Plastic pipe/profile manufacturing, ordinary plastic modification, recycled plastic recycling and grinding. |
Video of Liquid Nitrogen Cryogenic Grinding Machine：
Deep analysis
The core difference between liquid nitrogen cryogenic milling machine and room temperature plastic milling machine is that the former achieves ultrafine crushing of high toughness/thermosensitive materials by low-temperature embrittlement of liquid nitrogen, and then impacts them with high-speed impellers to avoid material degradation. However, the equipment is complex, consumes large amounts of liquid nitrogen, and has high operating costs, making it suitable for high-end scenarios such as electronics and aerospace; The latter relies on mechanical force for friction or crushing, is easy to heat up, suitable for non thermal sensitive materials such as conventional plastics, has a narrow fineness, but has a simple structure, high yield, low cost, and is suitable for basic industries such as recycled plastic recycling.
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