The difference between high-alumina high-strength castable is that most of the calcium aluminate cement cement in the high-alumina high-strength castable matrix is replaced by (Elkem) ultrafine powder, and at the same time, with the addition of an appropriate amount of additives, its performance exceeds that of ordinary refractory castables, so what are the characteristics of high-alumina high-strength castables?
The main features of high-alumina high-strength castables:
1. The cement content of high-alumina high-strength castable is low, about only 1 2-1 5 of the cement content of ordinary castable, so the production of low melt in the material is reduced at high temperature, so as to improve the refractoriness, compressive strength and slag resistance of the product itself;
2. Because the mixing water consumption of high-alumina high-strength castable is only about half of that of ordinary castable, the bulk density of castable is greatly improved and the porosity is reduced;
3. In the process of forming and curing, there is no large amount of water leakage and reduction of medium temperature strength of high-alumina high-strength castable, but with the increase of temperature, the material is gradually sintered and the strength is continuously improved.
4. Due to the small cement content in the high-alumina high-strength castable, the overall wear resistance and corrosion resistance have been greatly improved, which increases the overall service life of the kiln.
High-alumina high-strength castables are widely used in metallurgy, machinery manufacturing, petrochemical, building materials and other industries in various heat treatment furnaces, heating furnaces, shaft kilns, rotary kilns, electric furnace covers, blast furnace tapholes and other kiln linings. February** Dynamic Incentive Program