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 |
|
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GONGYI YUYING REFRACTORY CO.,LTD is located in GONGYI ZHENGZHOU CITY HENAN province,which is one of the main refractory production bases in China. Main products include different kinds of refractory brick and refractory material :Such as Fire Clay Brick, High Alumina Brick, Light Weight Insulating Brick,expanded clay,ceramic fiber blanket,rock wool products etc.They are widely used in Iron and steel, Nonferrous metals, BuildingMaterials(Cement,Glass,Ceramic), Petrochemical, Energy & Incineration etc industries.
Yuying Refractory produces a complete set of refractories for electrolyzers, and the new impermeable bricks are used in conjunction with impermeable castables
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