技术参数：

Cr2O3            48% basis, 50% basis, 52% basis

Cr/Fe Ratio    1.80:1 min. 48% basis

                      2.00:1 min. 50%/52% basis

SiO2              3% max.

Al2O3            16.5% max.

MgO               9% max.

Size                0-1mm 90% min.