Low Cement Castables

Low Cement Castables

In the refractory castable combined with calcium aluminate cement, the castable with CaO content less than 2.5%, that is, the calcium aluminate cement is added in an amount of about 1/2 to 1/3 of the castable of the ordinary calcium aluminate cement castable....

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Low cement castable is based on the use of low calcium aluminate cement content, and they are used in many applications that require high refractoriness, corrosion resistance and abrasion resistance. They possess a uniform structure with low porosity; have high temperature strength throughout the low and intermediate temperature range.

The content of CaO of low cement castable is usually less than 3%,so it insure the castable have a good strength in mid-temperature.

Features

Low Content of CaO

Excellent Mid-Temp Crushing Strength

Excellent High Temp Resistance

Excellent Wear Resistance

Application

Cement Industrial

Rotary Kiln

Steel Industrial

Furnace

CFB Boiler

Foundry Industrial

Low cement refractory castables have the following characteristics:

1. The CaO content in the castable is low, which can reduce the formation of low eutectic phase in the material, thereby improving the refractoriness, high temperature strength and resistance to slag erosion;

2. The water consumption of the castables during construction is only 1/3~1/2 of the ordinary castables, so the porosity is low and the bulk density is high;

3. After casting, there is less cementing in the curing, and there is no large amount of hydration bond breaking during heating and baking, which causes the medium temperature strength to decrease, but the strength increases with the increase of the heat treatment temperature;

4. The strength composition of the castable can be formulated into a self-flowing castable and a pump-casting castable by making appropriate adjustments.

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