Physical and chemical indicators of magnesia bricks

　　magnesia brick is a common refractory material made of magnesium oxide (MgO) as the main component. The following are some common physical and chemical indicators of magnesia bricks:

　　1. Density: The density of magnesia bricks is usually between 2.8-3.4 g/cm³, and the specific value may be affected by the preparation process and formula.

　　2. Compressive strength: Magnesia bricks have high compressive strength, usually between 40-100 MPa, and the specific value depends on the composition, structure and processing method of the material.

　　3. Refractoriness: Magnesia bricks have very high refractoriness and can be used for a long time in a high temperature environment above 1500°C. It can withstand extreme thermal cycling and thermal shock.

　　4. Thermal expansion coefficient: The thermal expansion coefficient of magnesia bricks is relatively low, usually in the range of 5-9 × 10^-6/℃. This allows it to maintain good dimensional stability at high temperatures.

　　5. Chemical corrosion resistance: Magnesia bricks have good chemical corrosion resistance to many acids, alkalis and solvents, and can resist the erosion of some corrosive media. However, in some acidic conditions, magnesia bricks may be subject to corrosion.

　　6. Thermal conductivity: Magnesia bricks have high thermal conductivity, which can conduct heat quickly. This makes it useful as a heat sink or heat transfer medium in some applications.

The physical and chemical indicators of magnesia bricks produced by zhenjin

　　It should be noted that the specific physical and chemical indicators may vary depending on the manufacturer, product type and specification. In specific applications, it is also necessary to select suitable magnesia bricks according to actual needs, and refer to relevant technical specifications and data provided by suppliers.