1. Calcium Oxide (Lump): CaO≥88%, SiO2<2.5%, Activity 360, mainly used in steelmaking.
　　
2. Calcium Oxide (Powder): CaO≥85%, SiO2<2.5%, Activity 360, mainly used for sintering.
　　
Calcium Oxide Powder (200-325 mesh): CaO≥90%, SiO2＜2.5%, Activity 360. Mainly used for sintering, desulfurization, wastewater treatment, and hollow brick production.