Characteristics and Application of Refractory Castables with High Aluminum and Low Cement Content

Low cement castable can be widely used for those industrial furnace's working lining, permanent lining( working temperature under 1400c), such as little refining Ladle cover, Ladle & Tundish permanent layer, heating furnace working wall, top and bottom. Blast furnace body, Hot metal ladle permanent layer.

The traditional refractories castable is made of refractory aggregate and high alumina cement. During the preparation process, the particle gradation of the fine aggregate fraction was not well designed. Cement particles are also coarse (specific surface area is generally 3000cm2 / g or so), the amount of cement is generally 15 to 25 percent, and the construction water consumption is 10 to 15 percent. Coupled with the amount of cement and more coarse particles, so that the cement can not be fully hydrated, resulting in poor performance of castables.

Low cement castable refractory castable is to overcome the shortcomings of the traditional refractory castable, the use of lower cement content, ultrafine powder technology, the correct design of aggregates push collection, and the use of highly efficient surface-active additives and other comprehensive technical measures prepared from, With the traditional refractory material pouring

High solidification rate, good volume stability, after drying and calcination, the volume shrinkage is small "and so on. It has the characteristics of low cement content, high compactness and low porosity, high normal temperature curing strength, good volume stability.

"GJ-180 high-strength refractory company castable" is based on fused white fused alumina as aggregate with pure calcium aluminate cement as the binder made of. The highest temperature of use of this casting material to 1800 ℃, 1400 ℃ under the hot state of the flexural strength of 7.4MPa, at high temperatures also has a good Wear resistance. It is suitable for the new kiln dry kiln cement kiln, three-channel coal nozzle and other parts used.

"GJ-18S castable" is fused white corundum as aggregate, it is a low cement content of refractory castable, the castable has a high mechanical strength and erosion resistance, erosion resistance, the maximum temperature of 1600 ℃ , Depending on its performance, this castable is suitable 1000 ~ 1400 ℃, the impact of serious wear and tear of large cement kiln mouth, multi-cylinder cooler elbow and other parts used.

"LC-160 castable" is a low-cement refractory castable, is based on high alumina bauxite clinker aggregate, pure calcium aluminate cement as a binder prepared, suitable for small and medium-sized dry kiln cement kiln mouth, Cooler elbow parts apply.

"GJ-15B (or GJ-15A) castable" commonly known as alkali-resistant high-alumina low-cement refractory castable, refractory brick for sale, it is through the matrix composition of the adjustment and control of preparation, with high mechanical strength, alkali corrosion, Temperature of 1500 ° C, suitable for cement production

The original, the fuel contains alkali, sulfur, chlorine high number of large dry kiln.