High aluminum universal arc brick

The high-aluminum universal arc brick is a neutral refractory material, which can resist the erosion of acidic slag and alkaline slag. Because it contains SiO2, its ability to resist alkaline slag is weaker than that of acidic slag. In addition, the slag resistance of high-alumina products is also related to the stability of the products in the slag. Generally speaking, after high-pressure molding and high-temperature firing, products with lower porosity have higher slag resistance.

The arc of the universal arc brick is a semicircle, and the other end is a groove. No matter how thick it is, it will be flexible and maneuverable. Because it has no shaft and has a slight deviation in size, it can also be built into a circle. So called the universal arc, this kind of brick is used in the ladle. The universal arc high alumina refractory brick is mainly used as the inner lining of the steel bucket. It used to be mainly clay. Now it is gradually replaced by the high alumina brick. The high alumina universal arc brick is an aluminum silicate with an alumina content of more than 48%. Quality refractory. It is formed and calcined from bauxite or other raw materials with high alumina content. High thermal stability, refractoriness above 1770℃. The slag resistance is better.

The universal arc refractory brick is mainly used as the lining of the ladle. It used to be mainly clay, but now it is gradually replaced by high alumina bricks. According to the use situation, we believe that the universal arc brick has the following advantages:

1. High compressive strength and abrasion resistance at room temperature. Good chemical resistance, especially acidic slag. High temperature creep rate is low. Excellent anti-stripping performance.

2. The bending joints can move freely and can move back and forth to adjust the roundness when laying bricks, so it is convenient to build refractory bricks, and the brick gap can generally reach 1 mm. The thickness of the lining brick is reduced, and the capacity of the steel drum is correspondingly increased.

3. The vertical joints of universal arc bricks are small, which is 70% less than the straight joints of standard refractory bricks, which reduces the use of refractory mud and saves the cost of consumables. The size can be customized to any length.

3. Long service life, with more clinker clay bricks increased by 210%.

4. From the reduction of unit treatment consumption, it also shows the superiority of the high-aluminum universal arc. And the reduction of unit consumption can explain the corresponding reduction of non-metallic inclusions in molten steel.

5. After resuming use, check that the corrosion resistance of the section of the high alumina brick to the slag and molten steel is better than that of the multi-clinker clay brick.

6. Universal arc refractory bricks can be used when laying bricks because of the roundness at both ends. Move back and forth to adjust the roundness, so it is convenient to build refractory bricks, and the brick gap can generally reach 1 mm.

7. The vertical joints of the universal arc bricks are smaller, which is 70% less than the straight joints of standard refractory bricks, so that the erosion effect of the molten iron layer moving up and down and deep into the joints of the bricks is corrected.

8. Due to the improvement of the quality of refractory bricks, the thickness of the lining bricks can be reduced, and the capacity of the steel drum is correspondingly increased.

9. Due to the long service life and convenient bricklaying, the labor for building steel drums behind the furnace is reduced and the utilization rate of steel drums is increased.

Physical and chemical indicators of universal arc brick: