Material Introduction
Alumina (Al2O3) is one of the most widely specified, general-purpose technical ceramics. All alumina are very hard and wear resistant, with high compressive strength even against extreme temperatures and corrosive environments. Alumina are also excellent electrical insulators and are gas tight. Aluminum Oxide Ceramic is produced by firing a tightly packed powder form of Al2O3 which includes some binder material. Commercially available grades range from 90% up to 99.8% with the higher purity generating somewhat higher hardness. It is possible to machine alumina using diamond grinding techniques. Polishing is also possible, with the degree attainable affected by alumina grain size and production technique, whether pressed or extruded.
| High Hardness | Low Coefficient of Thermal Expansion |
| Excellent Electrical Insulator | Mechanically Stable at High Temperature |
| Good Thermal Shock Resistance | High density, non-porous and vacuum tight |
| Resists Abrasive Wear and Chemical Attack | …… |
Products application
What is Ceramic Pipe Sleeve?
The main raw material of wear resistant ceramic ring is a special kind of ceramic with AL2O3 as the and the rare metal oxide as the flux, which is melted by high temperature at 1700 °C. The Ceramic Sleeves Lined Pipe as a whole part, and then assemble it into the steel pipe with our high-strength-temperature-resistant epoxy adhesive.
Alumina ceramic tube is of high wear resistance, acid and alkali resistance, effectively prolong the service life of equipment and considered to be the best choice of anti-wearing and anti-corrosion material; Wear resistance of ceramic is 10 times than that of special manganese, 10 times to high chrome cast iron; Hardness is much higher than that of wear-resistant steel and stainless steel. Application: Oil, mining, steel and power industry.
Technical parameters
| Alumina/RBSIC ceramic tube | |||
| Material | Alumina&RBSiC Silicone Carbide | ||
| Brand | FIRSTAR | ||
| Country of origin | Zibo,China | ||
| Colour | White | ||
| Type | Tube | ||
| Size | OD | ID | Length |
| 70-750mm | 30-710mm | 200-500mm | |
| Molding method | Isostatic pressing | ||
| Bulk Density | 3.02 & 3.65 & 3.70g/cm3 | ||
| Al2O3% | 92% / 95% / Silicon carbide | ||
| Water Absorption | ≤0.01 | ||
| Abrasion(cm3) | 0.1~0.25 | ||
Application
| Industry | |
| 1. Abrasive products | Grinding wheel granules |
| 2. Aluminium plants | Calcined alumina, bauxite, electrode, carbon, crushed bath |
| 3. Iron & Steel | Sinter dust, limestone, lime injection, coal, iron carbide, alloy additives |
| 4. Mineral wool & insulation products | Perlite, stone dust, refractory fibers, production wastes, dust from sawing operations |
| 5. Foundries | Molding sand, dust collection |
| 6. Glass plants | Batch, cullet, quartz, kaoline, feldspar |
| 7. Breweries, grain processing, feed mills | Corn, barley, soy beans, malt, cocoa beans, sunflower seeds, rice hulls, malting plants |
| 8. Cement | Clinker dust, limestone, cement, fly ash, coal, blast furnace slag |
| 9. Chemical plants | Caustic lime, fertilizers, lime dust, chrome ore, paint pigments, plastic pallets with glass fi bers |
| 10. Mineral mining plants | Kiln feed, ore concentrate, coal tailings, dust |
| 11. Coal fired power stations | Coal, fly ash, pyrites, slag, ash, limestone |
| 12. Coal mines | Coal dust, mine waste for back filling |
| 13. Technical carbon products | Technical carbon, dust, graphite for electrodes |
