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Do you know the refractories can be divided into these categories?

Date:2019-03-11 16:58 | From:Zhengzhou Sunrise Refractory | Author:admin
According to the main crystalline phase of the refractory, what kind of refractory bricks can we divide? Today Zhengzhou Sunrise Refractory Company will take everyone to take a look.

The main component refers to the first phase and the second phase component, and the content is about 90% of the total chemical composition. The development of modern refractory technology is more and more material ingredients, so the second phase and the third phase component appear, and the second phase and the third phase component can be adjusted to generate new technology, which exceeds the first phase classification in chemical composition. Limitations are the most common classification method used.
1. Silicon-aluminum series: In the silicon-aluminum series, the main components are SiO2 and Al2O3, which include clay bricks, high-aluminum bricks, sillimanite, kyanite, andalusite, mullite bricks and other products. According to its Al2O3 content, it can be divided into semi-silic (15~30% Al2O3), clay (30~48% Al2O3) and high aluminum (Al2O3 is more than 48%).
2. Magnesium-chromium series products: the main components in the magnesia-chromium series are MgO, Cr2O3, periclase is the first phase, magnesia-chrome spinel is the second phase, and the products belonging to this series are magnesia-chrome bricks and chrome-magnesia bricks. .
3. Magnesium-aluminum series: The main components are MgO and Al2O3. Since they form MgO.Al2O3, magnesium-chromium series products contain magnesium materials.
4. Magnesium-calcium series products: the main components are MgO and CaO. They all have a very high melting point and are important magnesium materials.
5. Magnesium-silicon series products: The main component of magnesia-based system is SiO2. When C/S<5, SiO2 and MgO form MgO.Al2O3 (forsterite). From the perspective of micro-mineral composition, pure aluminum series The main products are magnesium aluminum brick, periclite spinel brick, corundum spinel brick, aluminum-spinel castable in amorphous material is also a series of magnesium and aluminum products.

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