High Strength High Aluminum Low Cement Castable

High Strength High Aluminum Low Cement Castable

High - strength aluminum casting material is the main material of high - alumina clinker, plus composite binder, adhesives, etc.The products have high strength, wear resistance, anti - penetration, corrosion resistance, good mechanical properties, convenient construction and other features.Used for CFB boiler top, rear furnace wall etc.

The preparation principle of low cement refractory castings is rational choice of granule grading, ultramicrograin and admixture and their dosage.

Refractory aggregate and powder are made by calcined clay clinker and high bauxite clinker.

Refractory powder is usually used as raw material of secondary, primary or special high bauxite clinker, which should be treated with iron after grinding.

The solidification hardening mechanism of low cement casting material is the result of combination of hydration and coagulation.

Low cement castable is refers to the combination of calcium aluminate cement refractory castable, CaO content less than 2.5% of the castable means the amount of calcium aluminate cement for ordinary calcium aluminate cement castable 1/2 – 1/3 castable, unlike traditional refractory castable, low cement refractory castable matrix is Lord with castable material chemical composition in the same or similar have condensing combination effect of ultrafine powder to replace part or most of the calcium aluminate cement, so this is called belongs to hydration and combining with the coexistence of the castable.Because ultrafine powder replaces some calcium aluminate cement, the low cement casting material has the following advantages:

The low CaO content in the casting material can reduce the generation of low eutectic phase in the material, thus improving the fire resistance, high temperature strength and corrosion resistance of slag.

In the construction, the mixed water consumption of the pouring material is only 1/3 to 1/2 of the ordinary casting material, thus the stomatal rate is low and the volume density is high.

3 after molding, casting, curing generated less cement compound, when heated baking destruction does not exist a large number of hydration combined with the key, and the intensity of making medium temperature drop, but with the improvement of heat treatment temperature, the strength also gradually improve.

The grain size of the pouring material can be adjusted to make the pouring material and pump pouring material.