Corundum Castable
Corundum castable is a refractory material with more than 85% alumina content. And corundum castables are refractory material prepared by adding refractory powder, pure calcium aluminate cement binder, silica micropowder and admixture. Generally, the casting method is adopted for construction, which can be either cast into the overall lining or cast into precast blocks in the factory for field assembly. Refractory corundum castable has the features of high temperature, good strength, wear resistance, erosion resistance, high thermal conductivity, thermal shock resistance, corrosion resistance, good sealing, quick setting, etc.
Corundum Castable Description
Refractory corundum castable is a refractory castable prepared with corundum as the aggregate and powder plus some binders. corundum castable is a kind of high-grade unshaped refractories based on fused corundum as the main raw material, adding binder and other materials. corundum insulation castable has higher mechanical strength and anti abrasion performance than high aluminum castables and mullite castables, but its thermal shock resistance is slightly inferior. corundum castable is mainly used in boilers, blast furnace stoves, heating furnaces, ceramic kilns and other kilns. Furnace lining material.
Properties of Corundum Castable
High compressive strength
High stability of the high temperature lining,
Large bulk density, overall lining resistance to slag erosion and strong permeability,
Anti-solid particles, dust, high-temperature gas flushing,
Small mechanical abrasion resistance,
Not affected by reducing gases such as H2 and CO,
The construction is convenient.
Manufacturing Process of Corundum Castable
Corundum castable uses corundum as aggregate and powder and some binder. It has higher mechanical strength and abrasion resistance than high alumina refractory castable and mullite refractory castable, but its thermal shock resistance is a little worse. Mainly used as boiler, blast furnace, hot blast furnace, heating furnace, ceramic kiln and other furnace lining material.
Classification of Corundum Castable
According to different parts and temperature, classification of corundum castable:
Chrome corundum castable, Zirconia corundum castable, Brown corundum castable, Composite corundum castables.
Chrome corundum castable is mainly used for carbon black reaction furnace, coal slurry gasifier lining. Zirconia corundum castable is mainly used for glass industry furnace. Brown corundum castable has good wear resistance, generally used for power plant coal injection pipe, boiler lining, rolling furnace slide rails. Composite corundum castable is generally used for cement rotary kiln, nonferrous metal melting furnace, steel and other industries.
Rongsheng Refractory Corundum Castable Specifications
Index | Corundum Castable | |
Model | RS-85 | |
Chemical Composition(%) |
Al2o3 ≥ | 85 |
Sio2 ≤ | 6 | |
Bulk density g/cm³ | 110℃,24h ≥ | 2850 |
Cold bending strength MPA | 110℃,24h ≥ | 8 |
1100℃,3h ≥ | 12 | |
1350℃,3h ≥ | 12 | |
Cold pressure strength MPA | 110℃,24h ≥ | 80 |
1100℃,3h ≥ | 95 | |
1350℃,3h ≥ | 110 | |
Burning line rate of change | 1100℃,3h ≥ | -0.3 |
1350℃,3h ≥ | -0.5 | |
Mixing water consumption % | 5-6% | |
Operating temperature ℃ | 1600 |
Application of Corundum Castable
Corundum refractory castable is mainly used for lining materials of various high temperature kiln furnaces and high-temperature structures, such as the immersed tube outer lining of molten steel vacuum degasser, spray metallurgy and argon blown overall linings. Body, circuit top triangle lining, LF furnace lid, high temperature wear resistant lining of catalytic cracking reactor in petrochemical industry, circulating fluidized bed and high temperature wear-resistant lining of power plant boiler.
Corundum Castable Manufacturer from RS Refractory Factory
RS refractory factory is a professional corundum refractory castable supplier that established in the early 90s of twenty century. RS refractory factory has specialized in corundum castables for more than 20 years. if you have some demand of refractory corundum castable, or have some questions on corundum insulation castable about physical and chemical indicators, please contact us for free. and Rs refractory factory as a professional corundum insulation castable manufacturer in china, has some competitive advantages as follows:
Competitive Price: Make the products competitive in your market,
Abundant Experience: Prevent cracks and twist in bricks,
Different Moulds: Save mould fees for you,
Strict Quality Control: Meet clients’ quality requirement,
Large stocks: Guarantee prompt delivery,
Professional Packing: Avoid damage and secure the goods in transportation.