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The difference in application between refractory castables and refractory brick products
Keywords: anti-corrosion carbon bricks
Release time:
2025-04-28 10:00
Source:
Firstly, in terms of material properties, refractory castables have a certain degree of plasticity and can be directly poured without the need for preparation. On the contrary, refractory brick products need to be processed by pressing or extruding during the preparation process. Therefore, refractory castables are more suitable for complex shapes and structures, while refractory brick products are suitable for building structures with relatively fixed specifications and sizes.
Secondly, in terms of construction difficulty and efficiency, refractory castables are superior to refractory brick products. Due to the direct pouring of refractory castables, large-scale construction can be completed in a relatively short period of time, while refractory brick products require certain processing and splicing, resulting in a longer construction period. Moreover, refractory castables have good castability and can fully fill small gaps and voids, thereby better protecting the structure. However, fire-resistant brick products are difficult to completely fill some very small gaps due to their shape and size limitations.
The share of refractory castables continues to increase in all application fields of refractory materials. However, certain application areas still belong exclusively to refractory brick products. The so-called functional refractory materials are a typical example. Refractory bricks dominate in this field. For example, functional refractory materials play a role in controlling steel flow during continuous casting processes. In most cases where alkaline refractory lining is used (dolomite, magnesia, magnesia carbon, magnesia chrome), refractory brick products are preferred for refractory materials. These materials belong to the lining of converters, slag line bricks of ladles, furnace walls of electric furnaces, firing and transition zones of cement rotary kilns, and furnace linings for smelting non-ferrous metals (copper, lead, zinc, etc.). Usually, traditional habits play a decisive role, which is why refractory brick products are still used for furnace linings designed according to tradition.
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