Why is there a color difference between fire resistance bricks?
When the fire -resistant bricks are fired, if the operation method is improper, it is likely to cause uneven color, and the cause of color differences. In addition to this reason, there is actually a possibility. The operation method is not in place. Therefore, the problem of color difference, let’s analyze the cause of the color difference.
1. The bricks are unreasonable when the bricks are not reasonable when the kiln car is loaded. The sparse unevenness causes the flame to not evenly heat all the bricks, so that the brick blank is not heated during preheating. The color of the bricks is different.
2. Instead of controlling the temperature of the refractory bricks, because most of the current tunnel kiln uses gas gas as the fuel, but due to the different reasons such as coal quality, gas furnace operation, and firing products , Resulting in the temperature of some parking spaces and low temperature.
3. Excessive tension of the discharge machine, so that when the flame cannot reach the top of the kiln, it is pulled out of the high temperature zone by the tension in horizontal directions, resulting in the temperature difference between the top and bottom. As for sometimes lower product adhesion and deformation produces waste products, but the upper part has not reached sintering temperature.
When the refractory bricks appear color difference, we must find out the reason in time to facilitate the next time we process it, we can avoid it in time。
Refractory bricks are extremely valuable in the design of energy-efficient buildings because they have a very high thermal mass, which allows them to collect and store heat energy and slowly release it. Bricks are extremely stable when exposed to fire because they are created by heating them in a kiln to 1200–1300 °C. Studies based on fire testing are required, as suggested here, because the high density of the bricks could produce spalling in fire similar to high strength concrete.
The refractory brick has a long service life and good wear resistance and impact resistance. It can withstand the high pressure brought on by room temperature as well.
