1. Steel/power plant desulfurization

○ Fineness: 325 mesh (about 90% pass rate);

○ Equipment: Raymond mill or vertical mill;

○ Features: Fast-reacting calcium salt, efficient absorption of SO₂.

2. Glass Manufacturing

○ Fineness: 400 mesh;

○ Equipment: vertical mill (to ensure uniform particle size);

○ Process: Mix and melt with quartz sand and soda ash.

3. Concrete admixtures

○ Fineness: 80-200 mesh;

○ Equipment: Raymond mill;

○ Advantages: Improve the fluidity and strength of concrete.

4. Feed calcium additives

○ Fineness: 200-300 mesh;

○ Equipment: Ring roller mill (high purity requirement);

○ Process: Packaging after removing impurities to ensure calcium content ≥38%.