How to improve the quality of refractory castables for electric arc furnace covers

In order to improve the quality of the refractory castable, the following technical measures could be taken.

1. Raw materials of high purity, low impurity, stable volume at high temperature are the main conditions;
2. Minimize the amount of cement used. As the temperature increases, the CaO content increases, and the amount of liquid phase increases greatly;
3. Adding an appropriate amount of soft clay as a sintering agent to promote the formation and sintering of the liquid phase;
4. Improve the volume shrinkage of material during the sintering, adding an additive that produces an expansion effect at a high temperature;
5. Add heat-resistant steel fiber to improve stability and enhance toughness;
6. Add an appropriate amount of antiknock agent to promote the smooth discharge of water vapor and improve the baking quality.
Wanhao is a manufacturer who is specialized in designing various kinds of furnace and making?refractory products?for electric furnace, ladle, tundish, blast furnace, AOD furnace, IF furnace, etc.
Article Source:refractory castable
Company name：Wanhao Refractory
Email:sales100@wanhaorefractory.com
Website: http://www.wanhaorefractory.com/

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