High alumina low cement castable is a kind of large amount of castable in the amorphous materials, that is, the calcium aluminate cement is about half of the ordinary cement castable or one-third of the castable. Compared with the general high aluminum castable, the high alumina low cement castables strength and erosion are greatly improved by using ultra-fine powder to reduce the cement content. It not only increases the volume density, but also reduces the porosity, and at the same time, increases the service life.
High alumina low cement castable is developed on the basis of clay combined with refractory castable. Its main varieties are low cement, ultra-low cement, no cement or ultrafine powder and sol and other refractory castable. It is a combination of most of the advantages of refractory castable in one, with high density, low porosity, high strength, low wear, thermal shock and corrosion resistance properties of high quality refractory castable. Use effect is superior, social economy benefit is remarkable. The outstanding characteristic of high alumina low cement castables is density and high strength, which brings a lot of benefits for the use, but brings trouble to the baking. If the baking is not done properly, the phenomenon of spalling or blasting may occur easily. Therefore, for the high aluminum low cement castable baking to formulate a reasonable oven curve, but also the use of excellent explosion-proof admixture, so that the water in the body of refractory castable molding smoothly discharged, do not cause any side effects.
This series of refractory materials are used in metallurgy, petroleum, petrochemical, electric power, building materials and other industrial kilns, and a large part of them have replaced firebrick. However, as a manufacturer of refractory castables, we will still produce some high aluminum and low cement castables with different grades and different body densities according to the users’ different furnace types, temperatures and operating environments. Of course, different grades, different body densities and low cement castables also have different prices. The characteristics of high alumina low cement castables, also according to different levels of refractory powder, and different grades of the main material and different grades of the combination of medium, to determine the quality of the product. So that smaller particles, larger than the table two product, better sintering capacity, so that the castable can be more suitable for the user’s application.
In practical application, especially in construction, it is also very important to control the amount of water added. Generally, when leaving the factory, the manufacturer will attach the construction instructions of castable, in the construction, must be in strict accordance with the construction instructions, the refractory castable pouring good, good maintenance, play a better effect. All in all, regardless of production or application, different grades of castable must be determined according to the actual use (temperature, erosion, erosion), so as to meet the different needs of the market.
High alumina low cement refractory castable has the characteristics of high strength, anti – erosion, anti – wear, excellent performance and so on. Reducing the amount of cement can enhance the thixotropy of castable, that is, the mixing material has a certain form, a little external force can be added to flow, remove the external force to maintain the obtained shape, so this series of refractory castable is also known as thixotropy refractory castable, self-flow castable. Zhengzhou Rongsheng Kiln Refractory Co.,Ltd. are specialized in the production of refractory castable manufacturers, we have professional technical personnel and professional equipment and rich production experience, for your industrial facilities escort. Welcome to visit our company.
