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calcium aluminate, low melting point slag form secondary
steelmaking processes of 12CAO7AL2O3, is made up of alumina and
calcium carbonate melting during 1500~1600C。.
component |
A(%) |
B(%) |
CAO |
48-52 |
48-52 |
AL2O3 |
40-44 |
40-45 |
SIO2 |
3-6 |
1MAX |
TIO2 |
2MAX |
0.05MAX |
FE2O3 |
1.5MAX |
1MAX |
P/S |
0.05MAX |
0.05MAX |
Melting point |
1350C。MAX |
1350C。MAX |
SIZE |
5-25u/s |
5-25u/s |
Characteristic of calcium aluminate
(1) low melting point, slagging soon.
(2) Desulfurization efficiency and component Sulfur of product is
20ppm max;
(3) Shorten steelmaking processes time as well as economize power
expenditure
(4) capability of adsorbing foreign impurity
(5) giving off less stive during processes with less damage to the
environment
operation
guide
Add
4-5kg
calcium
aluminate
to
1MT
steel
during
tapping
with
a
little
active
lime,
which
makes
alkalinity
in
slag
more
than
3.5
and
deoxydation
deepness
of
(MnO+FE2O3)
1.5%max
as
well,
forming
high-calcium、low-melting
point
slag
material
which
is
favourable
for
desulfurating,
eoxidating
still
with
adsorbing
foreign
impurity.
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