CaO content >90,MgO content < 0.5  SiO₂  <1.5 S content < 0.06   

P content < 0.002

Activity >300 Particle size is 0~15 mm.

widely used in many fields ,such as metallurgy, chemistry, sewagetreatment, desulfurrization in gas , construction dope, paper-making ,  plastic,  rubbish burning, neutralisation etc