|
Grade |
Al2O3
% min |
Fe2O3
% max |
Na2O+K2O
% max |
TiO2
% max |
SiO2
% max |
H2O%
max |
B.D
(g/cm3)min |
|
I |
88 |
1.5 |
0.25 |
6 |
4 |
1 |
3.25 |
|
II |
87 |
1.8 |
0.25 |
6 |
4 |
1 |
3.20 |
|
III |
86 |
2.0 |
0.25 |
8 |
6 |
1 |
3.10 |
Shaft Kiln Calcined Bauxite Specifications
|
Grade |
Al2O3
% min |
Fe2O3
% max |
Na2O+K2O
% max |
TiO2
% max |
SiO2
% max |
H2O%
max |
B.D
(g/cm3)min |
|
I |
87 |
2.0 |
0.25 |
6 |
4 |
1.0 |
3.15 |
|
II |
86 |
2.0 |
0.25 |
8 |
6 |
1.0 |
3.10 |
|
III |
85 |
2.0 |
0.3 |
8 |
6 |
1.0 |
3.0 |
|
Ⅳ |
80 |
2.0 |
0.3 |
8 |
6 |
1.0 |
2.9 |
Size:0-50mm
90%min, or as required. Packing: In bulk
Bauxite Powder
|
Specifications |
Al2O3: 85% 80% min |
|
Size |
0-200mesh |
|
Packing |
In plastic Woven bags |
|
Index |
LM-1-70 |
LM-2-70 |
|
Main Contain % |
70min |
70min |
|
Size Composition |
65±5 |
65±5 |
|
Volume Density |
2.75
min |
2.75
min |
|
Initial Time for Solidity (minute) |
30 min |
30 min |
|
Line Contract Rate % |
0.5
max |
0.3
max |
|
Press-resistance Strength Common Temp |
320℃min |
320℃min |
|
2kg/cm3 Initial Temp for Softening |
1250℃ min |
1250℃ min |
Compound Desulphurizer
|
Product
Designation |
Compound
Desulphurizer of Calcium Carbide Series
|
Compound
Desulphurizer of CaO Series
|
|
Model
|
HTS－1
|
HTS－2
|
|
Property
and application |
The product is used in pre-desulphurization
of molten iron. It has the advantages of high efficiency, less consumption
and stability, especially for the production with quick rhythm, short
cycle. The consumption of the product in molten iron pretreatment is about
3.8kg/ton iron in No.1 Steel Plant of BaoSteel. The product can make the
rate of desulphurization more than 80% , and [S]≤0.004% in molten
iron. |
The
product is used in pre-desulphurization of molten iron. It has the
advantages of high efficiency and stability. The consumption of the
product is 11kg/ton iron. The product can make the rate of
desulphurization more than 80% , and [S]≤0.003% in molten iron. |
Heat Preservation Material for Ladle
|
Product
Designation |
Heat
Preservation Material for Ladle
|
|
Model
|
HBGLD-3
|
|
Property
and application
|
The product can avoid heat loss
of the molten steel after tapping from steel-smelting furnace. The molten
steel temperature drops only about 0.3℃/min without affecting the
composition when the product is used in BaoSteel. It has better spreading
property and makes smoke & dust less. The consumption is 0.6-0.8kg/ton
steel. |
Disposal Material
|
Product
Designation |
CAS
Impregnatorslag Disposal Material
|
|
Model
|
HQZ－1
|
|
Property
and application |
The product is used for solving
the slag’s adhesion of snorkel in CAS of molten steel secondary refining |
Repair Material for Ladle
|
Product
Designation |
Repair
Material for Ladle |
|
Model
|
HRM-1
|
|
Property
and application
|
It is made up of high aluminium
and magnesium material with high quality. The product is a repairing
material which is produced by congeal technology. It is used for repairing
ladle’s work lining. It has good property of resisting high- basicity
slag’s penetration and melt. |
High Alumina Brick
|
Specifications |
Various shapes and size |
|
Packing |
In wooden pallet |
|
Product
Designation |
Tundish
Cover Agent |
Non-carbon
tundish cover Agent
|
|
Model
|
HTD－2
|
HTM－1
|
|
Property
and application |
The product is used for covering
the molten steel’s surface in tundish while concasting. It can preserve
heat, avoid secondary oxidation and adsorb non-metal inclusion. The
consumption of the product is 0.45kg/t.s. |
The product is used for covering
the molten steel’s surface of tundish while concasting the high purity
super-low-carbon steel. It can preserve heat, avoid secondary oxidation
and adsorb non-metal inclusion on the surface of molten steel. When the
product is used for concasting in 300t LD system of BaoSteel, the average
of carbon picking up in IF steel is 3ppm, the maximum carbon picking up
reaches 6ppm. The consumption is 0.45kg/t.s. |
Gunning mix
|
Product
Designation |
Gunning
mix for LD Tapping Hole
|
Magnesite
Gunning mix for LD Lining
|
|
Model
|
HBCP－2
|
HBZP-1
|
|
Property
and application
|
The product is mainly sprayed to
the tapping hole to repair the easily damaged place of LD and electric
furnace. It has the advantages of corrosion resistance, erosion resistance
and high temperature resistance. It can increase the life of tapping hole.
|
The product is mainly sprayed to
the lining of LD and electric furnace to repair easily damaged
place(especially trunnion of LD). It has the advantages of high adhesion
power, corrosion resistance and high temperature resistance. It can
increase the life of furnace. |
Slagging material
|
Product
Designation |
Electric
Furnace Slagging Material
|
LD
Slagging Material |
LF
Furnace Foamer |
|
Model
|
HCZ-1
|
HCZ-3
|
HCZ-2
|
|
Property
and application |
The product is put into the
molten steel while tapping from electric furnace. It can make good
condition for LF’s refining with its effect of washing, desulphurizing
and generating of new slag. Its desulphurization rate reaches about 30%
when the product is used in the big electric furnace of BaoSteel. |
The product is added to the
ladle while tapping. It has actions of desulphurization of molten steel
and passivation of slag, and prevent the molten steel from
resulphurization and rephosporation while tapping. It makes the
desulphurization rate to 20% in the condition of 7.77x10-3% [S]
when the product is used in No.2 Steel Plant of BaoSteel. The consumption
is about 3kg/ton steel. |
The product can generate foam
while refining in LF, makes electrode work in shielded arc mode, and
reduces the heat loss. Meanwhile it can increase the life of ladle lining
and cover, and has high desulphurizing effect. The foamed slag’s
shielded arc is in good condition when the product is used in BaoSteel.
The product can make [S] of finished steel reduce to less than 0.004% with
the effect of the product. The desulphulization rate is more than 70% and
very stable. When used together with Electric furnace slagging material,
the effect of the product is much better. |
Modifier
|
Product
Designation |
Modifier
for Molten Iron Slag
|
Modifier
for Ladle Slag |
|
Model
|
HTZG－1
|
HCZ-4
|
|
Property
and application
|
The product is used in reducing
the viscosity of molten iron slag caused by spraying magnesium powder to
molten iron in deep desulphurization, and solves the problem of slagging-off.
When deep desulphurization, the quantity of adding to the 300ton ladle of
BaoSteel is 150-200kg. The product makes slagging-off convenient, in the
mean time it can keep heat and avoid heat loss while treating. |
The product is added to the
surface of molten steel after tapping from LD. It can reduce the oxygen
content of concasting low-carbon aluminum killed steel to improve the
purity of finished steel. The average of total oxygen content in CC
tundish is 30ppm without the phenomenon of resulphurization and
reposphoration when the product is used in No.1 Steel Plant of BaoSteel.
The consumption is 3kg/ton steel. |
Ladle Drainage
|
Product
Designation |
Ladle
Drainage chromium Sand
|
Ladle
Drainage Silicon Sand
|
stuffing
for EPT tapping hole in electric furnace
|
|
Model
|
HEYS-1
|
HBYS-2
|
HEYS-3
|
|
Property
and application |
The product is used for auto
drainage at ladle sliding gate in casting, especially for the process of
electric furnace +secondary refining +concasting. The auto casting rate is
more than 95%. |
The product is used for auto
drainage at ladle sliding gate in casting. The auto casting rate is more
than 98% in 300T ladle of BaoSteel. It has the advantages of stable effect
and high technician. The consumption is 30 to 40 kg/ladle. |
The product is made up of many
kinds of high qulity materials. It can make the electric furnace’s
tapping normal. The auto casting rate is more than 96%. |
Properties of refractories for ladles
|
Name
of product |
Serial
number |
Chemistry
% |
B.D. g/cm3
|
C.C.S MPa
|
M.O.R. MPa
|
P.L.C. %
|
Max.
service temperature℃
|
Water
addition % |
applications
|
||||||
|
Al2O3
|
Al2O3+Cr2O3
|
Al2O3+MgO
|
110℃
|
1500℃
|
110℃
|
1500℃
|
110℃
|
1500℃
|
110℃
|
1500℃
|
|||||
|
Porous plug |
1
|
|
≥93.0
|
|
|
≥3.20
|
|
≥90
|
|
≥15
|
|
0-+1.0
|
1800
|
|
ladle
|
|
2
|
|
|
≥93.0
|
|
≥3.20
|
|
≥90
|
|
≥15
|
|
0-+1.0
|
1800
|
|
||
|
Well
block and impact pad
|
1
|
|
≥90.0
|
|
≥3.20
|
≥3.20
|
≥50
|
≥80
|
≥8
|
≥12
|
±0.1
|
0-+1.0
|
1800
|
|
Well block Impact Pad, Monolithic porous plug |
|
2
|
≥90
|
|
|
≥3.20
|
≥3.20
|
≥50
|
≥80
|
≥8
|
≥12
|
±01
|
0-+1.0
|
|
|
||
|
3
|
|
|
≥85.0
|
≥3.05
|
≥3.00
|
≥60
|
≥100
|
≥8
|
≥12
|
±0.1
|
0-+1.0
|
1800
|
|
||
|
4
|
|
|
≥85.0
|
≥2.95
|
≥2.90
|
≥50
|
≥80
|
≥8
|
≥12
|
±0.1
|
0-+1.0
|
1800
|
|
||
|
5
|
|
|
≥85.0
|
≥2.80
|
≥2.75
|
≥40
|
＞60
|
＞8
|
＞10
|
||||||