Silicon corundum bricks are based on the phosphate series bricks, by improving the quality and aluminum content of bauxite and adding a certain proportion of silicon carbide. They are trapped materials, high-pressure molded, and sintered at 600°C. They can also be said to be phosphate series bricks. high-end bricks.
Silicon corundum bricks have high volume density, strong wear resistance, and corrosion resistance that is more than 2-3 times that of ordinary phosphate bricks. Silicon corundum bricks can also be produced into bricks that combine with lightweight materials and are used in lime kilns. The belt effect is obvious. The lightweight material part can slow down the decrease in the firing temperature of the lime kiln, and can also save some fuel and reduce production costs.
Silica corundum bricks are dark gray in color, darker than phosphate bricks, and their aluminum content, strength, wear resistance, and corrosion resistance are all 2-3 times higher than those of phosphate bricks. In particular, silicon corundum bricks used in zinc volatilization heating belts have obvious effects. Mainly reflected in the corrosion resistance, which is 2-3 times that of phosphate bricks.
Silica corundum bricks can also be called high-soft and wear-resistant bricks because of their high softening temperature under load. In addition, their bulk density, erosion resistance, and strength are better than ordinary phosphorus bricks. The production process of silica corundum bricks is basically the same as that of ordinary phosphorus bricks. The process ratio, trapped materials, high-pressure molding, and firing are all the same, except that the bauxite in the raw material is of higher quality than ordinary phosphate. Well, the density is heavy and the aluminum content is high. After adding a certain proportion of silicon carbide, it becomes a composite brick. The reason why it is called silicon corundum is because of the high content of silicon carbide and the high aluminum content of the bauxite raw material. s reason.
Silica corundum brick is a high-grade brick of phosphate series bricks. It is mostly used in the firing zone of zinc volatilization rotary kiln, and is also used in the firing zone of white ash rotary kiln. Generally speaking, the lime kiln firing zone uses silica corundum bricks with a density of 2.8, while the zinc volatilization kiln uses bricks with a bulk density of 2.9 or even 2.95 to resist wear and corrosion.
