Acid resistant refractory gunning material is used for spraying of blast furnaces, hot blast stoves, hot blast pipes, flue protection layers, working layers, etc.
Acid resistant refractory gunning material
Acid resistant refractory gunning material is used for spraying of blast furnaces, hot blast stoves, hot blast pipes, flue protection layers, working layers, etc. Reasonable selection of materials, strong adhesion, good integrity, simple construction process, good operation performance, high temperature resistance, high strength and good thermal insulation properties, can meet the requirements of fire resistance, thermal insulation, acid resistance and other conditions. The rapid construction and repair of the whole furnace village is carried out by means of high pressure injection molding.
Acid resistant refractory gunning material features:
It can improve the sealing performance of furnace and hot blast stove
Reduce heat loss and prevent overheating of the furnace shell
Extend the service life of the furnace body and shorten the repair time of the furnace.
Increase productivity.
Detailed indicators of acid resistant refractory gunning material:
Index |
FN-130 |
FN-140 |
FL-130 |
FL-S |
MS |
XA |
|
chemical composition(%) |
Al2O3 |
≥40 |
≥45 |
≥35 |
≥35 |
≥50 |
≥65 |
CaO |
/ |
/ |
/ |
/ |
≤0.5 |
/ |
|
Fe2O3 |
/ |
/ |
/ |
/ |
SiO2≤30 |
≤2.0 |
|
Refractoriness℃ |
≥1530 |
≥1610 |
≥1530 |
/ |
≥1530 |
≥1770 |
|
Flexural strengthMpa |
110℃ |
≥5 |
≥5 |
≥3 |
≥2 |
≥5.5 |
≥6 |
hot state |
1300℃ 0.5 |
1400℃ 0.5 |
1300℃ 0.5 |
800℃ 0.5 |
2.5 |
1300℃ 1.0 |
|
Rate of change of line after ignition(%) |
1300℃×3h ±1.0 |
1400℃×3h ±1.0 |
1300℃×3h ±1.0 |
800℃×3h ±1.0 |
1300℃×3h ±0.5 |
1300℃×3h ±1.0 |
|
Bulk density after burning(g/cm3) |
1300℃×3h ≥1.65 |
1400℃×3h ≥1.80 |
1300℃×3h ≥1.40 |
800℃×3h 09-1.1 |
1300℃×3h ≥2.0 |
1300℃×3h ≥2.20 |
|
Compressive strength after burning Mpa |
1300℃×3h ≥1.65 |
1400℃×3h ≥25 |
1300℃×3h ≥15 |
-- |
-- |
1300℃×3h ≥20 |
|
Thermal Conductivity (w/m) |
0.58-0.70 1300℃ |
---- |
≤0.30 350℃ |
≤0.27 350℃ |
--- |
---- |
|
use |
Blast furnace, hot blast stove system protection layer |
Blast Furnace Top Gas Outlet Pipe System Blast Furnace Bottom |
Hot air duct system protection layer |
Smoke duct (chimney) system |
Blast furnace hot blast furnace ball top protective layer |
Blast furnace hot blast furnace lining spray coating |
The unshaped refractory material used when repairing the lining of thermal equipment by spray construction method is called refractory gunning material. It is made of a refractory set with a certain particle gradation
Converter, electric furnace gunning material has the characteristics of high adhesion rate, good high temperature corrosion resistance, etc.
Insulating high alumina refractory bricks mainly refer to refractory products with an aluminum content of more than 48%. They are also called lightweight high-alumina bricks or heat-insulating high-alumina bricks due to their advantages of low bulk density, light weight, and good heat insulation effect. . It is a kind of thermal insulation refractory brick commonly used in high temperature industrial kilns and thermal equipment.
The refractory pre -production is the category of irregular refractory materials, also known as the prefabricated block of the pouring materials, and the irregular refractory prefabricated block.
White corundum is made from industrial alumina powder, which is smelted in an arc at a high temperature above 2000 ℃ and then cooled. After crushing and shaping, magnetic separation to remove iron, it is divided into various particle sizes.
Anhydrous tap hole mix for blast furnace tap hole
Fireclay bricksis suitable for supporting hot blast stoves of large, medium and small blast furnaces
Calcined alumina is a product obtained by calcining aluminum hydroxide at high temperature to partially or almost completely convert it into aAl2O2.
The unshaped refractory material used when repairing the lining of thermal equipment by spray construction method is called refractory gunning material. It is made of a refractory set with a certain particle gradation
Converter, electric furnace gunning material has the characteristics of high adhesion rate, good high temperature corrosion resistance, etc.
Insulating high alumina refractory bricks mainly refer to refractory products with an aluminum content of more than 48%. They are also called lightweight high-alumina bricks or heat-insulating high-alumina bricks due to their advantages of low bulk density, light weight, and good heat insulation effect. . It is a kind of thermal insulation refractory brick commonly used in high temperature industrial kilns and thermal equipment.
The refractory pre -production is the category of irregular refractory materials, also known as the prefabricated block of the pouring materials, and the irregular refractory prefabricated block.
White corundum is made from industrial alumina powder, which is smelted in an arc at a high temperature above 2000 ℃ and then cooled. After crushing and shaping, magnetic separation to remove iron, it is divided into various particle sizes.
Anhydrous tap hole mix for blast furnace tap hole
Fireclay bricksis suitable for supporting hot blast stoves of large, medium and small blast furnaces
Calcined alumina is a product obtained by calcining aluminum hydroxide at high temperature to partially or almost completely convert it into aAl2O2.
The unshaped refractory material used when repairing the lining of thermal equipment by spray construction method is called refractory gunning material. It is made of a refractory set with a certain particle gradation
Converter, electric furnace gunning material has the characteristics of high adhesion rate, good high temperature corrosion resistance, etc.
Insulating high alumina refractory bricks mainly refer to refractory products with an aluminum content of more than 48%. They are also called lightweight high-alumina bricks or heat-insulating high-alumina bricks due to their advantages of low bulk density, light weight, and good heat insulation effect. . It is a kind of thermal insulation refractory brick commonly used in high temperature industrial kilns and thermal equipment.
The refractory pre -production is the category of irregular refractory materials, also known as the prefabricated block of the pouring materials, and the irregular refractory prefabricated block.
White corundum is made from industrial alumina powder, which is smelted in an arc at a high temperature above 2000 ℃ and then cooled. After crushing and shaping, magnetic separation to remove iron, it is divided into various particle sizes.
Anhydrous tap hole mix for blast furnace tap hole
Fireclay bricksis suitable for supporting hot blast stoves of large, medium and small blast furnaces
Calcined alumina is a product obtained by calcining aluminum hydroxide at high temperature to partially or almost completely convert it into aAl2O2.