Alkali resistant castables have better Shanxi ramming properties than ordinary clay or high aluminum castables. Ordinary and low cement alkali resistant castables have been successfully used for double layer structural lining of preheater covers, cones, third air ducts, etc. Shanxi ramming material lining is not suitable for special-shaped bricks. Low cement alkali resistant castables can also be used for rear kiln openings, coolers, and kiln door covers. High alumina and corundum based castables used in cement kilns include low cement and ultra-low cement castables, high-strength corundum castables, etc. Calcined alumina and corundum are used as aggregates. Low cement and ultra-low cement high aluminum casting materials can be used for front and rear kiln openings, chain belts, kiln door covers, and cooler side walls.
Aluminum carbon special refractory material refers to a carbon composite Shanxi ramming material made of aluminum oxide and carbon. In most cases, other raw materials such as SiC, metal Si, Al, etc. are also added and bonded together with organic binders such as asphalt or resin. Aluminum carbon refractory material, broadly speaking, refers to the refractory material mainly composed of aluminum oxide and carbon, which is called aluminum carbon refractory material. According to different production processes, aluminum carbon refractory materials can be divided into two categories: non fired aluminum carbon refractory materials and fired aluminum carbon refractory materials. Non fired aluminum carbon refractory materials are carbon bonded refractory materials.
The kiln mouth casting materials used for large and small kilns have completely different materials, and the addition of advanced materials increases the service life of the kiln mouth Shanxi ramming material. The large-scale kiln mouth casting material with a daily output of 5000t/d should use high-grade Shanxi ramming material. High grade refractory materials include corundum casting materials, mullite casting materials, corundum mullite casting materials, etc. In summary, refractory casting materials with strong wear and corrosion resistance can prolong the lifespan of the kiln mouth. Most of the existing kiln mouth castables use water as the medium, allowing various materials to achieve a certain degree of fluidity through water-based media. The role of binders in castables is to have sufficient strength at low and medium temperatures.
Firstly, priority must be given to local reuse, that is, Shanxi ramming materials used in nearby consumption areas, such as magnesia carbon bricks used in steel mills, and magnesia carbon bricks crushed nearby and directly used as metallurgical auxiliary steel mills. After use, as long as the permanent magnesium bricks are not damaged, they can be rammed again, thereby reducing loading, unloading and transportation costs. The second main use is decomposed refractory materials, mainly used as secondary raw materials after rough processing (such as crushing and crushing), such as magnesia carbon bricks. After crushing and crushing into different particles, they are added to the production process of magnesium carbon brick components. After the refractory material is crushed, it is used as a paving material.
