Limestone powder is classified by mesh size, which refers to the number of openings per linear inch in a screen. The mesh size determines the fineness or coarseness of the powder. Here’s a breakdown of common limestone powder mesh sizes and their applications:
Common Limestone Powder Mesh Sizes
1. Coarse Grinds (4-20 Mesh)
– Particle Size: ~4.75mm to 0.85mm
– Uses: Agricultural lime, road base, construction fill.
2. Medium Grinds (20-100 Mesh)
– Particle Size: ~850μm to 150μm
– Uses: Soil conditioning, animal feed, asphalt filler.
3. Fine Grinds (100-325 Mesh)
– Particle Size: ~150μm to 44μm
– Uses: Plastics, rubber, paint, paper coatings.
4. Ultra-Fine Grinds (400-2500 Mesh)
– Particle Size: ~37μm to 5μm (or finer)
– Uses: High-end plastics, pharmaceuticals, cosmetics.
Key Applications by Mesh Size
| Mesh Range | Particle Size (Microns) | Common Uses |
|————–|——————|—————-|
| 4-20 Mesh | 4750-850 µm | Construction, agriculture |
| 20-100 Mesh | 850-150 µm | Animal feed, fertilizers |
| 100-325 Mesh | 150-44 µm | Paints, plastics, paper |
| 325+ Mesh .jpg)
44 µm | Specialty chemicals, pharmaceuticals |
Factors Affecting Limestone Powder Selection
– Purity: Higher purity (>95% CaCO₃) is needed for food/pharma use.
– Brightness/Whiteness: Important for paints and paper.
– Moisture Content: Affects flowability in industrial processes.
Would you like details on a specific mesh size or application?