Preparation Of Polished Tiles With Polishing Porcelain Waste

The purpose of this dissertation is to develop the high efficiency resource utilization technology of polishing porcelain waste. The main chemical composition was quantitatively examined for the polishing porcelain waste and polishing porcelain powder. The experimental results shows that the polishing waste contains SiC, magnesium oxychloride and a small quantity of organic matter, compared with the porcelain tile powder; the polishing waste foams and expands when the sintering temperature exceeding about 1080℃; the sintering foaming problem of the polishing waste is the essential reason to utilize effectively the polishing porcelain waste, inhibiting the sintering foaming is one of the most effective technologies of resource utilization for the polishing waste.On this basis, the effects of the material formulation, preparation process and sintering system on the foaming, deformation of polishing porcelain tile based the polishing waste were examined in detail, and the technologies to inhibit the foaming, deformation were discussed. The experimental results indicate that the adjustment of basic formulation is only to enhance the sintering performance and reduce slightly the foaming, but does not essentially inhibit the foaming; three types of inorganic additives of A, B and C can effectively inhibit the sintering foaming of the polishing porcelain waste; it is helpful for discharging of a mass of CO, CO2 gases generated during sintering to reduce properly the particle size of raw material powder, and can effectively inhibit the foaming of polishing porcelain waste in the porcelain green body during sintering.By studying in the factory, preparation of dense polished tiles with 10wt% of polishing waste materials as substrate layer and high quality materals as the surface layer by the way of double cloth method. The experimental results showed that the polished tiles prepared with A, B and C adding in the adjusted production formulation shows the best performance. Adjust the production system to prepare polished tiles with polishing waste to stirring 14 hours, 260MPa forming pressure. All the tests showed that the substrate layer and surface layer of the polished tiles by the way of double cloth method combine better, each performance is similar to the polished tiles and reach the national standard.This dissertation innovative studied the way to prevent the foaming during the sintering of the polishing waste and its influencing factors, and studied the industrialization technology on the preparation of the excellent polished tiles with polishing waste. It is believed that this dissertation provide a way of the high efficiency resource utilization of polishing porcelain waste for polished tiles manufacture and it also has a very important social-economic significance.