English Views: 4 Author: Site Editor Publish Time: 2021-07-11 Origin: Site
We all know that refractory brick is made of special material. Ordinary bricks can’t withstand very high temperatures, so it is necessary to use this material with high strength and high temperature resistance as the masonry of various industrial furnaces. In industrial production, almost all high-temperature furnaces need to use refractory bricks, such as glass works, ironmaking, steelmaking, refining furnaces and so on. The following will introduce the specific use of different types of refractory brick.
Here is the content list:
l Refractory clay brick
l High alumina brick
l Light clay brick
l Lightweight clever brick
l Corundum brick
l Low silicon fused corundum brick
l Light alumina products
The physical and chemical indexes of common refractory clay brick, allowable deviation of size and lamination of cross section of appearance products should conform to the specification. Refractory masonry for furnaces. The temperature of lining material, furnace wall, furnace bottom and flue shall be below 1250 ℃. Combustion chamber parts, allowed to use more than 1400 degrees.
The physical and chemical indexes, product dimensions, allowable deviation, etc. of high aluminum brick should conform to the specification. High alumina brick is used in the area of high temperature resistance and wear resistance of general furnace, or the masonry with a large load, burner brick and the masonry with special requirements. The vault of the high temperature zone of the combustion chamber allows the operating temperature of 1300 ~ 1650 degrees.
The physical and chemical indexes of light clay brick, allowable deviation of product size and section requirement of appearance product should conform to the specification. Lightweight refractory clay bricks, used as furnace linings that are not eroded by high temperature slag and aggressive gases, are used at temperatures between 1150 and 1400 depending on capacity.
The allowable deviation of the physical and chemical index and outer dimension of light weight clever brick should conform to the specification. It can be used for heat resistant linings with working temperatures below 1350 degrees, and also for masonry without high temperature melt erosion and scour effect. It can be directly in contact with flame.
General corundum brick is suitable for heavy gasifier lining to the fire surface under the working pressure of 3MPa, the important part of the burning city and protecting the village with salt-containing wastewater, and the radiant burner brick working at high temperature. The use temperature of corundum brick is below 1600 ~ 1670.
Low silicon fused corundum brick is suitable for strong reducing atmosphere, hydrogen pressure, the presence of high temperature water vapor. For example, the lining of the collecting pipe of the first stage reformer, the lining brick of the second stage reformer and the lining of the high temperature furnace of the large ammonia synthesis unit. The allowable deviation of the physical and chemical index and size of fused corundum brick should conform to the specification. The temperature of low silicon fused corundum brick is below 1600C~1670 ℃.
Light alumina products, such as light corundum brick, used for high temperature furnace lining, heat insulation, high temperature, high pressure steam erosion of the lining, generally in the non-fire surface lining. The operating temperature of alumina products is 1400 degrees below.
Generally speaking, refractory bricks are mostly used in the masonry of industrial kilns or high temperature industrial equipment. At high temperatures, refractory brick can withstand all kinds of physical and chemical corrosion and mechanical action.
