Spinel ramming mass manufacturers take you to understand the application of magnesium aluminum spinel

2022-07-15


Spinel ramming mass manufacturers tell you that magnesia-aluminum spinel refers to magnesia and alumina as raw materials, which are actually quite common in life. It is mainly a synthetic spinel refractory raw material.

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Spinel ramming mass manufacturers tell you that magnesium aluminum spinel has good corrosion resistance, wear resistance and thermal shock stability. Its main uses are as follows: First, magnesia-aluminum spinel bricks are used in cement rotary kilns to replace magnesia-chromium sand, which not only avoids the pollution of chromium, but also has good anti-stripping performance; second, it is used to make ladle castables, which is very Greatly improves the corrosion resistance of the steel lining. Therefore, it is widely used in steel-making refractories. Spinel ramming mass manufacturers tell you that the production of amorphous high-purity refractory raw materials is the preparation of high-quality pre-synthesized spinel to provide new raw materials.
There are two methods of magnesia-aluminum spinel: electrofusion and sintering. Spinel ramming mass manufacturers tell you that the electrofusion method is composed of industrial alumina or high-purity bauxite and light-burned magnesia, including natural or seawater (brine) water-based magnesia, mixed in proportion, and melted at about 2200 ° C in an arc in the furnace. Spinel ramming mass manufacturers tell you that the sintering method is to grind, mix and granulate the above raw materials, and calcine them in a rotary kiln or shaft kiln above 1800 °C. Some bricks are made of industrial alumina or high-purity bauxite clinker. , adding or mixed grinding, mixing and forming according to the ratio requirements, and then firing magnesia-alumina spinel bricks at high temperature, mainly used for open hearth furnace tops and other parts.

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