[China Glass Net] Clay refractory brick is a refractory finished product produced from refractory clay. It is widely used in industry. Clay refractory bricks are classified into general clay bricks, multi-cropped clay bricks, whole-cropped clay bricks and high-silica clay bricks. Throw Pillows For Home Decor,Bed Fleece Pillow Set,Blanket Pillow Set,Sheets For Bed Set Shaoxing Fangzhuo Textile Co.,Ltd , https://www.printblanket.com
Clay refractory bricks are acidic refractories, and their acidity is gradually weakened by the increase of Al2O3 content in bricks. Its thermal conductivity is lower among all refractory materials. Although the refractoriness is as high as 1700 ° C, the load softening temperature is only 1300 ° C, which is a large defect of clay refractory bricks, so it can not bear weight and can not be pressed when used at high temperature. When it is corroded by many R2O (usually K2O and Na2O), its load softening temperature is further reduced to about 1050 °C, so it can only be used in the lower part of the pool wall or at the lower temperature of the bottom of the pool. The thermal expansion rate of clay refractory bricks is the smaller of the commonly used refractory materials because the clay refractory bricks have fine crystals, small pores and uniform distribution, so that the stress is relatively simple to be buffered, so that the thermal shock resistance is strong in a wide range. In the lower part of the regenerator, the refractory parts such as punches and material bowls, such as punches and material bowls, which are adjacent to the feeder on the grid brick, flue and daily glass pool furnace, are required to have sufficient heat shock resistance.
There are many manufacturing methods for clay refractory bricks, such as manual molding, beating molding, extruder molding, mud casting molding, and press high pressure molding. Different molding methods, the nature of the finished product is very different. Even if the chemical composition and the raw material types are identical, the nature of the bricks formed by the different molding methods will be different. Different molding methods are used depending on the application site. The regenerator compartment bricks are small in size, and the high-pressure presses are better for forming finished products. The mud forging method using vacuum exhausting for large pool walls and troughs is better, and the scale requirements are accurate. The finished product is formed by the tapping method.