How to improve the life of breathable bricks

As a refractory product, breathable bricks play an important role in the refining process of molten steel for steel manufacturers. With the increase in the number of applications, the loss of breathable bricks is becoming more and more serious. To a certain extent, the output value of steel can be increased. The main methods are asymmetric air supply by bottom blowing, replacement of ventilating cores, and control of reasonable bottom blowing parameters and protection.

In the bottom blowing asymmetric air supply method, 2 groups of air-permeable bricks are replaced in production. Generally speaking, the 2 groups of air-permeable bricks are fully functioning, the ladle age can be greatly increased, and the large-flow supply of air-permeable bricks when the ladle is not very large There is no big problem with the gas. In comparison, choosing this method will increase the cost, and it is not enough to compare with the economic benefits obtained by the improvement and the improvement of the package age.

Use the method of replacing the breathable core with split type breathable bricks. After the breathable core sees an alarm, break the pads under the breathable bricks and replace the new breathable cores. This method can make full use of other refractory materials in the bag and improve the age of the bag. intention of.

After controlling reasonable bottom blowing parameters, it is often protected, which is not only conducive to improving the age of the package, but also maintaining a good metallurgical effect. During the application of the breathable brick, when the bottom blowing pressure is too large, the molten steel will tumble violently. Lead to secondary oxidation of molten steel; if the pressure is too small, the molten steel cannot be blown, resulting in the failure of bottom blowing, which affects metallurgy. In addition, if the bottom blowing device is neglected for a long time, there may be air leakage, which not only causes the loss of bottom blowing gas , increase the production cost, and even cause the bottom blowing pressure to be too small, affecting the production process.

In addition to the above methods, there are many ways to improve the service life of breathable bricks, such as changing the brick type of breathable bricks.