The method of improving the life of ladle breathable brick

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. Therefore, it is necessary to improve the service life of breathable bricks. To a certain extent, the output value of steel can be improved, and the main methods are asymmetric air supply by bottom blowing, replacement of ventilating cores, control of reasonable bottom blowing parameters and protection, etc.

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 lacking in comparison with the improvement effect and the economic benefits of the increase in the package age.

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

By controlling the reasonable bottom blowing parameters and protecting them frequently, it is not only beneficial to improve the age of the package, but also to maintain 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 and affecting the metallurgical effect. 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.