HG/T2573-93

MgO%≥            95.00               93.00   

CaO%≤             1.00                1.5               

Acid Insol%≤         0.10                0.15 

Cl%≤                0.035               0.070

Sulphate%≤          0.20                0.30

Fe%≤                0.05                0.06

Loss on burn%≤       3.50                5.50

Mn%≤                0.003               0.003

Screen residue(150mm) 0.030               0.050

bluk density(g/ml)       0.20                0.20