Alumina Carbon Bricks Description
Alumina carbon brick is a kind of carbon composite fire brick which’s raw materials are alumina and carbon and added with pitch, resins or other organic binders. In most cases, other materials such as SiC, Si and so on are added into the raw material to enhance the performance. By production craft, alumina carbon bricks can be divided into unburned alumina carbon brick and burned alumina carbon brick.
Unburned alumina carbon bricks are carbon bonded fire bricks, have better anti-oxidation property than magnesia carbon bricks, and has excellent Na2O series slag corrosion resistance, so are widely used in iron liquid pretreatment equipments such as blast furnace, iron ladle and so on. Sintered alumina carbon refractory bricks are ceramic bonding refractory material, usually used as sliding gate bricks, nozzle bricks for continuous casting sliding nozzle system.
Alumina carbon bricks properties
Alumina carbon bricks have excellent slag corrosion resistance and thermal shock resistance.
Compared with magnesia carbon refractory material , alumina carbon sliding gate bricks have better alkali(Na2O) corrosion resistance and TiO2 slag corrosion resistance.
Sintered alumina carbon bricks can form silicon carbide by reaction under high temperature, so there are two bonding methods: carbon bonding and ceramic bonding. Therefore, sintered alumina carbon bricks have good mechanical property, not only play the role of traditional refractory material but also structure functional material.
Alumina Carbon Bricks Physiochemical Index
| Item | Sintered ACSP-A | Sintered ACSP-B |
| Al2O3 % ≥ | 67 | 71 |
| F.C ≥ | 7 | 7 |
| Apparent porosity %≤ | 8 | 8 |
| Bulk densityg/cm3 ≥ | 2.7 | 2.8 |
| Cold crushing strength Mpa ≥ | 79 | 89 |
| High temperature rupture strength (1400℃, 0.5h) ≥ | 8 | 9 |
| Cold rupture strength Mpa ≥ | — | — |
| Thermal shock resistance (times) ≥ | — | — |
Alumina Carbon Sliding Plate Bricks Applications
Alumina carbon sliding plate(ASCP) bricks is the functional refractory material for continuous casting, are widely used in sliding nozzle systems of electric furnace, converter, refinery steel ladle and continuous casting tundish, as the switch to control flow rate and flow quantity of steel liquid. Alumina carbon sliding plate bricks should have good high temperature strength, excellent corrosion resistance, scouring resistance and thermal shock resistance, as well as dimensional accuracy.
Alumina silicon carbide carbon bricks ( Al2O3-SiC-C bricks) are mainly used in the inner lining of torpedo ladle, iron ladle and other iron liquid pretreatment equipment.
Why to Choose RS kiln Refractory Ceramic Fiber Rope
Rongsheng refractory manufacturer locates in Xinmi city where abounds in refractory mineral and is the production base for high quality, favorable price refractory raw material and finished products. Since established in the early 1990s, Rongsheng refractory material factory has been attaching importance on continuous innovation and development, now Rongsheng kiln Refractory has become a comprehensive enterprise in refractory material industry, covering metallurgy, building materials, electric power, chemical industry, etc. RS kiln Refractory main products have been exported to many countries such as America, India, Iran, South Korea, Thailand, Australia and so on.
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