Refractory materials are processed from bauxite clinker into aggregates, which are mixed with refractory cement and other binders. It is easy to use and has high refractoriness. It is more convenient than high alumina refractory bricks. The following introduces you the price of high-aluminum castables.
Refractory materials are used to synthesize high-alumina aggregates, powders, binders and additives in proportions. It has the characteristics of high temperature resistance, high tolerance, wide temperature, non-reducibility, abrasion resistance and so on. Refractory materials are widely used in hardware, smelting, chemical, non-ferrous metals and other industries. They are particularly prominent in the steel industry. They are mainly used for front kiln mouth, disintegration furnace, kiln hood and other parts of rotary kiln.
Refractory materials are provided by dry powder method. The construction is required to participate in the clean water. After mixing, you can choose vibration or beating structure. The granular aggregates of commercial aggregates are very small and are suitable for the construction of boilers and dense pipelines. High temperature performance and high strength. The temperature range is wide. There is basically no shortening after high temperature, which overcomes the shortening characteristics of refractory concrete in the past. Goods are easy to store, transport and use. Refractories are divided into conventional and low steel and ultra-low steel. Nowadays, it is important to use low-steel type in heavy steel, while ultra-low-steel type high-aluminum casting is used in metallurgical furnaces in the non-ferrous metal industry.
The amount of cement used in refractories is relatively low, and the content of calcium in castables is only 1/4 to 1/3 of traditional refractory castables. Therefore, the amount of low melting phase in the low cement castable is reduced, which can significantly improve the high temperature performance; the construction water consumption is low, generally 6-7% of the weight of the castable, so the density is high and the porosity is low. Not only has a high room temperature curing strength, but also the strength does not decrease after medium temperature and high temperature treatment. Its strength is 3-5 times that of ordinary refractory castables; it has good volume stability at high temperatures, but it is not a refractory material. Fired, but after drying and calcination, the volume shrinks very little.
