What are the requirements for the production materials of breathable bricks?

What are the requirements for the production materials of breathable bricks?

First of all, in order to better ensure the permeability of the surface of the breathable brick, it needs to be produced in a steel infiltration mode in the ventilation channel, and in this process, we need to ensure the value of its steel infiltration. The control of the ventilation brick can make the relevant material of the breathable brick, which can well control the wetting angle with its molten steel; in addition, the performance of the breathable brick will be affected by the environment of use. The strong erosion of the properties of the molten steel, so that the material of the brick body is required to have sufficiently high structural properties and related properties such as high temperature mechanics.

It is reported that this high-performance breathable brick is applied in an intermittent mode during use. Therefore, under the action of acute cooling and heating, all materials of the brick body need to have strong thermal shock resistance. Because of such good product performance, in the later use and maintenance, it is necessary to carry out oxygen-burning cleaning to improve the anti-oxidation performance of the brick surface material, so that the In the later stage of production, it can better improve the service life of its products.

Therefore, in order to better meet the various properties required in the use process, in the production of this kind of craft brick, it is necessary to effectively reduce the content of its fine powder and increase the required amount of medium particulate matter. At the same time, in the production process, the raw materials need to use plate-shaped corundum profiles, and corundum profiles such as fused zirconium as aggregates, and at the same time use a micro-powder material such as activated alumina. , as well as high-purity fused spinel, and a unique profile raw material such as chrome oxide green, to make the matrix ratio. In this process, we should pay attention to its cement chrome steel and other materials in this process. The proportion of the sintered alumina should be less than that of other corundum-type elements.

This is mainly because these raw materials themselves have the same physical and chemical properties, such as their high refractory properties, strong thermal shock stability, etc., and also have strong resistance to slag erosion during use. In addition, it has high strength and anti-stripping performance, so that it can show its application performance of breathable bricks with less creeping and less thermal shrinkage at the relevant temperature where the load performance is relatively softened.