Silica-molybdenum brick and magnesia-alumina spinel brick are two different types of refractory bricks, which have some major differences in material composition and application fields.
Material composition:
Physical and chemical properties of silica-molybdenum bricks "Silicon" in silica-molybdenum bricks refers to silicon carbide, and "Mo" refers to mullite. In fact, silica-molybdenum bricks are refractory bricks made by sintering with high-alumina bauxite and silicon carbide as the main raw materials. In essence, silica-molybdenum bricks are just a kind of high-alumina bricks with silicon carbide added. Among them, some products may be mixed with refractory raw materials such as mullite, "three stones", and corundum.
Magnesium-aluminum spinel bricks: Magnesium-aluminum spinel bricks are a kind of alkaline refractory bricks, mainly unfired and fired block bricks, and spinel can also be synthesized to make amorphous refractory materials to form integral structures and spraying linings. Production of magnesia-aluminum spinel bricks The production process of spinel refractory bricks is basically the same as that of ordinary magnesia bricks.
Uses:
Silicon-molybdenum bricks: suitable for high-temperature environments such as high-temperature industrial furnaces and electric furnaces, with good thermal shock stability and fire resistance.
Magnesium-aluminum spinel bricks: mainly used in industrial furnaces with high requirements for refractory materials such as cement kilns and glass kilns, especially under alkaline conditions, because spinel has a certain resistance to alkaline materials.
Performance characteristics:
Silicon-molybdenum bricks: have high heat resistance and fire resistance, and have high requirements for thermal shock stability under high temperature conditions. Magnesium-aluminum spinel bricks: have good alkali resistance and corrosion resistance, and are suitable for environments with more alkaline substances.
Price: Due to the different material composition and preparation process, the prices of the two may vary, depending on market
Supply and demand and production process and other factors
In general, silicon-molybdenum bricks are mainly used in high-temperature industrial furnaces, while magnesium-aluminum spinel bricks are more suitable for specific industrial furnaces, especially high temperature conditions under alkaline environments. Choosing the right refractory brick depends on the specific application requirements and working environment.
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