Introduction to Refractory Concrete

Refractory concrete is a material composed of refractory aggregate, refractory powder, and cement or additional additives in a certain proportion. After mixing, shaping, and curing, it can be used directly.

Composition of refractory concrete

1. Refractory aggregate: Refractory aggregate is the skeleton of refractory concrete and plays an important role in the high-temperature physical and mechanical properties of refractory concrete.

2. Refractory powder: Refractory powder can improve some properties of cement binders, reduce the amount of cement, increase the workability of refractory concrete mixtures and the tightness of concrete, and improve fire resistance.

3. Cementing agent: The main function of the cementing agent is to gel and combine refractory aggregates and refractory powders to form refractory concrete with certain properties.

4. Admixtures: There are many admixtures, such as coagulants, water-reducing agents, mineralizers, and expansion agents. Generally, the dosage is small, and its main function is to improve and enhance the performance of refractory concrete to better meet the requirements of construction and use.

Characteristics of refractory concrete

1. The production process is simple, the production cycle is short and the efficiency is high.

2. It is easy to construct and manufacture and can be arbitrarily shaped to meet various requirements for thermal equipment.

3. The construction methods are diverse. In addition to the vibration molding process, multiple construction methods such as spraying, ramming, or machine pressing can also be used.

4. Strong integrity and good air tightness.

5. High refractory temperature and good strength.

Refractory concrete can extend the life of the kiln, reduce material consumption, and increase production. It is a widely used kiln refractory material.