Low cement high alumina castable manufacturing is union in clay refractory castable, on the basis of the development of the main varieties have low cement, ultra-low cement and without cement or superfine powder sol combined with such as refractory castable, it combines the advantages of the most refractory castable in one, with a high density, low porosity, high strength, low abrasion, thermal shock and erosion resistance properties. The use effect is better and the social economy benefit is remarkable.
The outstanding characteristic of low cement high alumina castable manufacturing is density and high strength, which brings benefits for use, but brings trouble for baking, that is, improper baking. Easy to occur peeling or blasting phenomenon. Solid this to high aluminum quality low cement castable baking to formulate a reasonable hong-furnace curve and the use of excellent explosion-proof admixture, so that the castable molding body of the water smoothly removed, do not cause any side effects.
Low Cement High Alumina Castable Physicochemical Indexes
|Chemical Composition (%)≥||Al2O3||75||70||75||70|
|Bulk Density Dried(kg/cm3)≥||110℃×24h||2650||2600||2700||2600|
|Cold Crushing Strength(MPa)≥||110℃×24h||100||100||100||80|
|Cold Modules of Rupture(MPa)≥||110℃×24h||10||8||14||10|
|Permanent Linear Change(%)||1100℃×3h||±0.3||±0.4||±0.4||±0.4|
|Alkali Resistance||–||Grade ǁ||–||Grade ǁ|
|Maximum Service Temp(℃)||1600||1600||1600||1500|
|Application||Kiln hood cooler,etc.||Kiln hood cooler,etc.||Outlet, burner kiln hood cooler,etc.||Kiln hood cooler,etc.|
Low cement high alumina castable manufacturing is widely used in the lining of heating furnace, lining of ladle and tunic permanent layer, working layer of molten iron ladle and lining of cement rotary kiln. There are many factors affecting the performance of low cement refractory castable, mainly including powder, binder and dispersant. In addition, the material and water content are also important factors.
Low Cement High Alumina Castable Advantage
- High aluminum content
- Low content of refractory cement
- The strength
- Resistance to erosion
- Wear resistance
- Excellent performance
This series of refractory materials are widely used in metallurgy, petrochemical, mechanical manufacturing, power and building materials and other industrial kilns. These industries have generally used this kind of castable to replace the traditional fired refractory as the lining. Also can be used for heating furnace, all kinds of heat treatment furnace, electric furnace cover, shaft kiln, rotary kiln, made out of iron hook, ladle, ladle lining.