How can you tell if a brick is a fire brick?
Look at the proportion of impurities in refractory bricks.Generally speaking, impurities will be produced during the sintering process of refractory bricks strictly according to the proportion of ingredients, which is no problem. However, some manufacturers often do not produce according to the proportion of materials used, so that the sintered refractory bricks do not have a hard structure, so that the quality of the sintered bricks is not good enough, and then deceive consumers with high prices. Then when you buy refractory bricks, you can check it through its surface. Generally, the surface of refractory bricks with high impurity content will be very rough, while those refractory bricks that meet the quality standards have uniform overall color and smooth and flat surface, which we can intuitively distinguish from the surface.
It is the sintering experiment of refractory bricks. This method is effective. Generally, when we buy refractory bricks, we will go to the manufacturer to check. Especially before we decide to buy, we must ask the manufacturer to conduct a high-temperature test to check whether the sintering index of the refractory brick is the same as the standard index. As long as the deviation of the experimental results is not large, the quality of the brick body is still acceptable, which is also a good method. If you have doubts about this method, you can use the second method for detection.
