Name of indicators

MKTT

Mass fraction _{of Al2O3}, %, not less

18

Mass fraction of SiC, %, not less

60

_Fe2O3, %, no more

-

Losses of weight during the calcinating, %:

1,3 - 3,0

Fire resistance, °C, not below

1650

Moisture content, %, no more

5

Grain structure:

Pass through a grid No. 3, %

100

Pass through a grid No. 2, the %neena less

98

Pass through a grid No. 0,5, %

30-55

Pass through a grid No. 009, % in limits

20-35