Product Introduction
High Alumina Refractory Fire Brick is an alumina-silicate refractory material in which the Al2O3 content is more than 55%, and is calcined from a high-content alumina raw material such as a silicone raw material or a bauxite. High heat resistance and high temperature resistance at 1770 ° C and above. Has good slag resistance, mainly used in the masonry of steel making electric furnace, glass furnace, cement rotary furnace and so on.
Technical Parameters & Features
Product Application
Clay refractory bricks is a kind of refractory fire clay brick, the bauxite and flint clay as main raw material with add the sillimanite and the andalusite, the binder according to the proportion, then forming the low porosity clay products after mixing, molding, and drying.
Clay bricks of over SK30 contain over 30% Alumina and are made from raw materials of unusually high degree of purity of Bauxite and refractory clay. For serve under severe conditions,Rewell clay Alumina bricks have excellent mechanical strength, good resistance to thermal spalling, and are highly resistant to chemical attack by vilatile alkaies and some slag. We manufacture and design alumina bricks to meet the requirements of a great variety of service conditions thorough quality control.
Clay fire brick is one of the most common fire bricks. Its Al2O3 content is between 30% and 48%. The clay fired bricks are made of refractory clay or kaolin and clay clinker combined with clay, which is formed by semi-dry or plastic method and roasted at the temperature of 1250-1420.
Characteristics of clay refractory bricks:
1. Low porosity and strong density.
2. Good resistance to permeability and good corrosion resistance.
3. High temperature strength, long service life.
Company Profile
Construction Site
High Alumina Refractory Fire Brick is an alumina-silicate refractory material in which the Al2O3 content is more than 55%, and is calcined from a high-content alumina raw material such as a silicone raw material or a bauxite. High heat resistance and high temperature resistance at 1770 ° C and above. Has good slag resistance, mainly used in the masonry of steel making electric furnace, glass furnace, cement rotary furnace and so on.
Technical Parameters & Features
Al2O3 | 30%-35% | 35%-38% | 38%-42% | 42%-50% |
Item | 33% Al2O3 | 38% Al2O3 | 42% Al2O3 | 48% Al2O3 |
| fire clay brick | fire clay brick | fire clay brick | fire clay brick | |
Al2O3 | 33% | 38% | 42% | 48% |
Fe2O3/% | ≤3 | ≤3 | ≤3 | ≤2.5 |
Refractoriness | ≥1690 °C | ≥1730 °C | ≥1750 °C | ≥1750 °C |
Bulk density/g/cm3 | 1.9-2.0 | 2.0-2.1 | 2.1-2.18 | 2.15-2.3 |
Unit weight (230*114*65mm) | ≥3.35KGS | ≥3.55KGS | 3.65KGS | ≥3.75KGS |
Apparent porosity/% | ≤26 | ≤24 | ≤24 | ≤22 |
Cold crushing strength | ≥20Mpa | ≥25Mpa | ≥30Mpa | ≥35Mpa |
Refractoriness under load | ≥1250 °C | ≥1300 °C | ≥1350 °C | ≥1420 °C |
Reheating Linear Change/% | 0~ -0.5 | 0~ -0.3 | 0~ -0.4 | +0.1~ -0.4 |
| (1350°C,2h) | (1350°C,2h) | (1450°C,2h) | (1450°C,2h) |
Product Application
Clay refractory bricks is a kind of refractory fire clay brick, the bauxite and flint clay as main raw material with add the sillimanite and the andalusite, the binder according to the proportion, then forming the low porosity clay products after mixing, molding, and drying.
Clay bricks of over SK30 contain over 30% Alumina and are made from raw materials of unusually high degree of purity of Bauxite and refractory clay. For serve under severe conditions,Rewell clay Alumina bricks have excellent mechanical strength, good resistance to thermal spalling, and are highly resistant to chemical attack by vilatile alkaies and some slag. We manufacture and design alumina bricks to meet the requirements of a great variety of service conditions thorough quality control.
Clay fire brick is one of the most common fire bricks. Its Al2O3 content is between 30% and 48%. The clay fired bricks are made of refractory clay or kaolin and clay clinker combined with clay, which is formed by semi-dry or plastic method and roasted at the temperature of 1250-1420.
Characteristics of clay refractory bricks:
1. Low porosity and strong density.
2. Good resistance to permeability and good corrosion resistance.
3. High temperature strength, long service life.
Company Profile
Construction Site