Description of High Alumina Castable
High Alumina Castable also called calcium clinker, is made from industrial alumina oxide powder and selected limestone powder. It is produced after manufactured under high temperature in rotary and grind into powder. The product is for making high quality refractory castables, which is a dispensable tool used in high temperature facilities in industries like metallurgy, building material, chemical, electric plant, etc.
High Alumina Castable is a kind of refractory castable which uses high alumina raw material as aggregates and the powder and then be added with binding agent. High aluminum refractory castable has high mechanical strength, good thermal shock resistance, good corrosion resistance. It’s mainly used for furnace lining of boiler, blast furnace hot blast stove, heating furnace, ceramic kiln and various industrial furnaces.
Product Features of High Alumina Castable
• High compressive strength and high volume stability at high temperature;
• Low bulk density, strong resistance to slag erosion and penetration;
• Refractoriness can reach 1400～1550℃;
• Excellent thermal shock resistance, good resistance to cold and heat or obvious environmental changes;
• Can resist chemical corrosion of acid slag or solution;
• The construction process is convenient, and it can be poured into a solid cladding layer or cast into a prefabricated block immediately;
Product Application of High Alumina Castable
High Alumina Castable also called calcium clinker, is made from industrial alumina oxide powder and selected limestone powder. It is produced after manufactured under high temperature in rotary and grind into powder. The product is for making high quality refractory castables, which is a dispensable tool used in high temperature facilities in industries like metallurgy, building material, chemical, electric plant, etc.
|
Item |
High Alumina Refractory Castable | RS-1 | RS-2 | RS-3 | |
| Al2o3 | % | 60 | 65 | 70 | |
| Bulk Density | g/cm3 | 110℃*24h | 2.40 | 2.60 | 2.80 |
| Cold Crushing Strength | Mpa | 110℃*24h | 55 | 60 | 65 |
| 1000℃*3h | 80 | 90 | 100 | ||
| Modules of Rupture | Mpa | 110℃*24h | 7 | 8 | 9 |
| 1000℃*3h | 9 | 11 | 13 | ||
| Linear Change after firing | % | 1000℃*3h | ±0.3 | ±0.3 | ±0.3 |
| Room temperature wear | Cm3 | 1000℃*3h | 9 | 8 | 7 |
| Thermal shock resistance | Times | 1000℃ | 20 | 20 | 20 |
| Max Service temperature | ℃ | 1400 | 1450 | 1500 | |
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