Magnesium chromium brick factories have found that some refractory material companies have low profit margins, with some products even having a profit margin of only 1%. However, some large refractory material companies can achieve a profit margin of 5% -10% for some products, which reflects the market demand for refractory material products with different technological contents. Some companies have also stated that some products are currently being sold at a loss, mainly because some companies have large inventory levels and have to sell at a loss at the end of the year in order to clear inventory and cash out. Our industry is not something that is immediately snapped up at a loss, it cannot compare to eggs in supermarkets, "said a salesperson from an amorphous refractory material company. Burned magnesia brick

The characteristics of this type of brick are pure raw materials, high firing temperature, direct bonding between high-temperature phases such as magnesia and spinel, and isolated distribution of low melting phases such as silicates. Therefore, it significantly improves the high-temperature strength and slag resistance of the brick. The production process of firing magnesia chrome bricks is generally similar to that of magnesia bricks. In order to eliminate the loose effect caused by MgO and Cr2O3, Al2O3 or fine powder produced by co grinding and calcining with chromite magnesia during the firing process of bricks, the method of combining with magnesia coarse particles to make bricks is an effective measure. Compared with ordinary magnesia chrome bricks, magnesia chrome bricks made by this method have lower porosity, higher compressive strength, load softening temperature, and flexural strength. Magnesia chrome bricks made from synthesized magnesia chrome sand pressed with chromite magnesite powder and calcined at high temperatures have better slag resistance and high-temperature strength than other magnesia chrome bricks.