Low creep high alumina brick
Al₂O₃, %: ≥75
Apparent Porodity%: ≤20
Bult Density, g/cm³: 2.60-2.85
- Commodity name： Low creep high alumina brick
Description
Introduction
ZHENJIN REFRACTORIES founded in 1985. It is a manufacturing enterprise integrating research and development, productions, sales, international trade and technical services. Refractory products and services for cement, lime, non-ferrous, glass, building materials and metallurgical industries.
Low creep high alumina bricks are made of brown corundum, electric fused stone, andalusite, sillimanite, high-grade bauxite and other refractory materials as the main raw materials, added additives and binders, produced by special technology, and formed by high pressure Low creep refractory bricks.
Low creep high alumina bricks are made by adding other beneficial auxiliary minerals in the production process of ordinary high-alumina bricks to improve creep resistance. With the development of large volume, high wind temperature and long life of iron-making blast furnaces, the proportion of low-creep high-alumina bricks used in hot blast stoves is getting higher and higher.
Low creep high alumina brick characteristics: low creep rate, good volume stability; good erosion resistance; good resistance to gas erosion; high compressive strength, good wear resistance.
Features
Application area
Low creep high alumina brick
Hot blast stove and blast furnace of steel industry
Technique Data
| Brand | Target | Specification | |
| Chemical Composition wt% |
Al₂O₃ | 45 | ≥42 |
| SiO₂ | 53 | ≤57 | |
| Fe₂O₃ | 1.2 | ≤1.5 | |
| Bulk Density, g/cm³ | 2.2 | 2.1-2.3 | |
| Apparent Porosity, % | 17 | 14-20 | |
| Cold Crushing Strength MPa |
60 | 50-80 | |
| Refractoriness under Load, ℃ (0.2MPa, T0.6) |
1500 | ≥1470 | |
| Thermal Shock Test, Cycle (1100℃, water quenching) |
8 | ≥8 | |
| Thermal Conductivity (1100℃, W/m·K) |
1 | ≤1.2 | |
Physical & Chemical indicators
| Item | DRL-155 | DRL-150 | DRL-145 | DRL-140 | DRL-135 | DRL-130 |
| Al₂O₃, % | ≥75 | ≥75 | ≥65 | ≥65 | ≥65 | ≥60 |
| Apparent Porodity % |
≤20 | ≤21 | ≤23 | ≤24 | ≤24 | ≤25 |
| Bult Density, g/cm³ | 2.60-2.85 | 2.60-2.85 | 2.50-2.70 | 2.40-2.60 | 2.35-2.55 | 2.30-2.50 |
| Cold Crushing Strength MPa |
≥60 | ≥60 | ≥50 | ≥45 | ≥45 | ≥40 |
| Creep rate at 0.2MPa×50h % |
≤1550℃ 0.8 |
≤1550℃ 0.8 |
≤1450℃ 0.8 |
≤1400℃ | ≤1350℃ | ≤1300℃ |
| Linear change reheating % |
1500℃×2h ≤-0.2~0.2 |
1450℃×2h ≤-0.2~0.2 |
1450℃×2h ≤-0.3~0.2 |
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Application
Key words:
Low creep high alumina brick
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SINCE 1985
Zhengzhou Zhenjin Refractories Co., Ltd.
Zhengzhou Zhenjin refractory material CO., Ltd. ( hereafter: ZHENJIN REFRACTORIES ) founded in 1985, is located in Xinmi City, Henan Province of China. ZHENJIN REFRACTORIES is a refractory-manufacturing enterprise integrating research and development, production, sales, international trade and technical services. The company is committed to cement industry, glass industry, non-ferrous smelting and steel & iron industry to provide products, construction and installation and tailor services.
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