The melting and cooling parts of float glass furnaces are one of the key parts of the overall furnace. The materials used in this part are mainly zirconium corundum refractory castables or zirconium ramming materials with strong high temperature resistance, and are constructed with electric fused zirconium corundum refractory bricks or clay bricks. On the basis of selecting high-quality refractory materials, the construction quality is also a key factor affecting the service life of refractory materials in the later stage. The main construction masonry requirements are as follows:
① The laying of paving bricks for the melting and cooling parts is carried out at the end of the construction of the melting furnace. After the paving bricks are constructed, the kiln is cleaned and the kiln is sealed for baking. The laying of paving bricks must be done strictly according to the design requirements. Poor construction quality will cause leakage at the bottom of the pool, or the paving bricks will bulge after the kiln is baked. It is extremely difficult to handle and must be carefully constructed.
② According to the design requirements, there are many ways to construct the paving bricks, that is, the bottom of the pool. The simple method is to lay 50mm zirconium corundum ramming material on the clay pool bottom bricks, and lay 75-100mm fused zirconium corundum paving bricks on them. The following points should be noted in this method: first, tape should be pasted on the brick joints of the clay bricks to prevent the ramming material from entering the brick joints. Secondly, the ramming material must be compacted, and then the paving bricks must be strictly set with expansion joints according to the design requirements. If this method is not carefully constructed, leakage from the pool bottom will occasionally occur, especially around the temperature measuring holes at the bottom of the pool.
③ The more advanced method at present is to pour a layer of castable on the clay bricks. The castable does not leave expansion joints, and the entire pool bottom is safely covered. After the castable solidifies, the paving bricks are laid with fire clay of the same quality as the castable. The preparation, use and construction methods of the castable must be strictly carried out according to the design requirements. The paving bricks use shrinkage-free fused zirconium corundum bricks. The expansion joints of the paving bricks must be set according to the design requirements. It should be noted that the fire clay used to lay paving bricks cannot enter the expansion joints, so it is recommended to use suction cups to place paving bricks during construction.
④ After the paving bricks are constructed, tape the expansion joints and finally cover them with colored strips to keep them clean. The laying of the cover bricks must also leave enough expansion joints according to the design requirements.
Wechat Us 
