Silica Refractory Mortar is a kind of refractory material used to seal and fill the gap between refractory bricks, and sometimes used to patch some holes in the furnace lining. It features good insulation, high overheat strength, good wear resistance and high heat stability.
Silica refractory mortar is used mostly in electric furnaces, heat treatment furnaces, and air furnaces. It can also be used in other applications like kilns, ovens, incinerators, and other high temperature environments. Its excellent thermal resistance and chemical stability make it suitable to resist temperatures up to 1650°C (3000°F).
The silica content in the silica refractory mortar plays an important role in determining its thermal shock resistance: It should be above 85%. A higher percentage makes the mortar highly resistant to thermal shocks and to water vapor condensation. Other important characteristics are its thermal conductivity, porosity, bulk density and strength.
Silica refractory mortar is typically composed of high purity SiO2 and Al2O3, and other additives including water, sodium silicate and potassium silicate. It is important that the minerals are crushed carefully, resulting in higher porosity and lower energy density.
The silica refractory mortar is available in different shapes and sizes. It is usually used in a wet application and should be applied in two coats. It is important to mix the mortar with water until it gets a paste-like viscous consistency. The refractory mortar should then be applied thick enough to fill up all the irregularities in the surface.
The mortar should then be allowed to dry and set properly before any heat can be applied. Once dry, the refractory mortar is highly resistant to thermal shock and can be used for a long period of time. It also offers good abrasion resistance and has excellent corrosion resistance.
Silica refractory mortar is a cost-effective solution for many industrial applications and can save time, money and energy. If you are looking for a reliable refractory mortar that is able to withstand high temperature fluctuations and thermal shocks, silica refractory mortar is an ideal choice.
