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Advantages of low cement castable

Words:[Big][Medium][Small] Mobile Page Two-Dimensional Code 2018-06-10     

低水

Advantages of low cement castable

Low cement refractory castable refers to the castable with less than 2.5% CaO content in the refractory castable bound by calcium aluminate cement, that is, the amount of calcium aluminate cement is about 1/2~1/3 of that of ordinary calcium aluminate cement castable.Different from traditional refractory castable, low-cement refractory castable matrix USES superfine powder which has the same or similar chemical composition with the main material of the castable to replace part or most of calcium aluminate cement, so this kind of castable belongs to the mixture of hydration and coagulation.Due to the replacement of some calcium aluminate cement with ultrafine powder (micro powder), low-cement refractory castables have the following advantages:

1. Low CaO content in castable can reduce the formation of low eutectic phase in the material, thus improving the refractoriness, high temperature strength and slag erosion resistance;

2. During construction, the mixing water consumption of castable is only 1/3 to 1/2 of that of ordinary castable, so the porosity is low and the volume density is high;

3. After pouring and molding, less cement compounds are generated during curing. During heating and baking, there is no large number of damage of hydration bond, resulting in the decline of moderate temperature intensity.

4. The force composition of castable can be adjusted properly to prepare artesial-flow castable and pump pouring castable.

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