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.
It is widely used in the lining of the kiln working face which is in direct contact with the flame, and has become one of the research hotspots in recent years.
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Silicon carbide used in industry is a synthetic material, commonly known as emery. Silicon carbide is one of the most commonly used non-oxide refractory raw materials in the field of refractories.
The refractory ramming material is prepared from a high proportion of granular and powdery materials and a very low proportion of binders and other components, even all of which are composed of granules and powders, and are subject to strong ramming. Bulk materials for construction.
Corundum refractory castable has the characteristics of high strength and good fluidity, which is convenient for construction. It is mainly used for the parts that are easy to be washed and worn, such as the combustion chamber, separator and flue of circulating fluidized bed boiler.
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
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.
It is widely used in the lining of the kiln working face which is in direct contact with the flame, and has become one of the research hotspots in recent years.
Refractory ramming mass (refractory taphole mass) is a kind of Refractory used for lining of blast furnace tapping groove. It is mainly used to protect the blast furnace out of the ditch from high-temperature hot metal and slag erosion and erosion, and has excellent high-temperature resistance and wear resistance. The ramming material for the iron discharge ditch is usually composed of corundum, silicon carbide and carbonaceous material, which has the ability of resisting hot metal and molten slag erosion and scouring, reburning line change small, strong resistance to a variety of oxidation characteristics. The construction of the ramming material for the iron ditch is convenient, easy to dismantle and repair, does not produce harmful gas, and is beneficial to environmental protection.
Silicon carbide used in industry is a synthetic material, commonly known as emery. Silicon carbide is one of the most commonly used non-oxide refractory raw materials in the field of refractories.
The refractory ramming material is prepared from a high proportion of granular and powdery materials and a very low proportion of binders and other components, even all of which are composed of granules and powders, and are subject to strong ramming. Bulk materials for construction.
Corundum refractory castable has the characteristics of high strength and good fluidity, which is convenient for construction. It is mainly used for the parts that are easy to be washed and worn, such as the combustion chamber, separator and flue of circulating fluidized bed boiler.
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
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.
It is widely used in the lining of the kiln working face which is in direct contact with the flame, and has become one of the research hotspots in recent years.
Refractory ramming mass (refractory taphole mass) is a kind of Refractory used for lining of blast furnace tapping groove. It is mainly used to protect the blast furnace out of the ditch from high-temperature hot metal and slag erosion and erosion, and has excellent high-temperature resistance and wear resistance. The ramming material for the iron discharge ditch is usually composed of corundum, silicon carbide and carbonaceous material, which has the ability of resisting hot metal and molten slag erosion and scouring, reburning line change small, strong resistance to a variety of oxidation characteristics. The construction of the ramming material for the iron ditch is convenient, easy to dismantle and repair, does not produce harmful gas, and is beneficial to environmental protection.
Silicon carbide used in industry is a synthetic material, commonly known as emery. Silicon carbide is one of the most commonly used non-oxide refractory raw materials in the field of refractories.
The refractory ramming material is prepared from a high proportion of granular and powdery materials and a very low proportion of binders and other components, even all of which are composed of granules and powders, and are subject to strong ramming. Bulk materials for construction.
Corundum refractory castable has the characteristics of high strength and good fluidity, which is convenient for construction. It is mainly used for the parts that are easy to be washed and worn, such as the combustion chamber, separator and flue of circulating fluidized bed boiler.
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