Refractory Cement Manufacturing

Refractory cement is a hydraulic cementation material made of alumina and bauxite, calcined clinker with calcium aluminate as the main component and alumina content of about 50%. Aluminate cement is often yellow or brown, but also gray. The main mineral of aluminate cement is monocalcium aluminate (CaO·Al2O3, CA) and other aluminate, as well as a small amount of dicalcium silicate (2CaO·SiO2). The colors are mostly gray and white.

Characteristics Of Refractory Cement Products

1. Refractory cement sets and hardens quickly. 1d strength can reach more than 80% of the highest strength. It is mainly used for construction emergencies, such as national defense, roads and special emergency repair projects.

2. This series of cement hydration heat, and heat release concentration. The heat of hydration released within 1d is 70% ~ 80% of the total amount, which makes the internal temperature of concrete rise higher. Even under -10℃ construction, aluminate cement can set and harden quickly, which can be used for winter construction.

3. It has strong resistance to sulfate corrosion under common hardening conditions, because the cement stone does not contain calcium aluminate and calcium hydroxide, and the density is large.

4. High heat resistance. If the use of refractory coarse aggregate (such as chromite, etc.) can be made of heat resistant concrete using temperature up to 1300 ~ 1400℃.

Refractory Cement is Suitable For

1. Used for preparing unshaped refractory materials;

2. With refractory coarse and fine aggregate (such as chromite, etc.) can be made into heat resistant concrete with high temperature;

3. Emergency works for construction period;

4. For sulphate corrosion resistance works and winter works.

Refractory cement refers to cement with a fire resistance of not less than 1580°C. Refractory cement takes bauxite and limestone as raw materials, calcined with calcium aluminate as the main component, alumina content of about 50% clinker, reground into hydraulic cementation material. According to the composition of different, can be divided into aluminate refractory cement, low calcium aluminate refractory cement, calcium magnesium aluminate cement and dolomite refractory cement. Refractory cement can be used to cement various refractory aggregates (such as corundum, calcined high bauxite, etc.), make refractory mortar or concrete, used for lining cement rotary kilns and other industrial kilns.

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