- - - .
- , . 130 ¸ 350 . 360 , , .
- (. .1), ( 305), , , (Al2O3), (CaF2), .
. , (.4,), 1250 ¸ 1400 0 (.4,). (.4,), 0.9 - 1.4 /2. , , . , . 2400 0.
.4.
, , . , . , , , , , . , , .
CaO FeO, (6) , . , , 0.15% . (0.3%) , .
(7) (8). FeO ( 7-20%) . 0.7%.
, . (.4,).
, ; (.4,).
, .
, , (2 - 3% ) . , , . 130 - 300 25 - 50 . - , .