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What are the applications of zirconium silicate in billets?

Category:Industry news Hits:162 Time:2022-04-22
Zirconium silicate is a kind of composite oxide material with high melting point, chemical and phase. It is widely used in fire-resistant materials and zirconium based pigments. The zirconium silicate sintered together has excellent resistance to high temperature and is also an important candidate material for high-temperature layout. However, the natural zirconium silicate is usually rich in impurities. The natural zirconium silicate will differentiate and lose its excellent function when applied to high-temperature environment, Therefore, the artificial composition of high-purity silicic acid is an effective way to deal with this question. For this reason. Researchers have discussed many methods of wet chemical composition of zirconium silicate. Among them, sol-gel method has attracted much attention because of its high purity, good uniformity, highly uniform data and composition temperature lower than that required by traditional methods. For example, hydrosol gel method is selected and lithium ion compound is added.

After heat treatment, the zirconium silicate ring is formed. The zirconium silicate is studied to select the hydrolytic sol gel method. In the 1990s, foreign researchers proposed a non hydrolytic sol gel skill IV. the non hydrolytic sol gel process uses the reaction of metal halides and oxygen supplying alkyl oxides to form metal bridge oxygen bonds through nucleophilic substitution reaction without formation. At present, this method has been successfully applied to a variety of composite oxides, but when this method is used to form zirconium silicate for precursor materials, the composition temperature is as high as when no mineralizer is added. Therefore, we introduced mineralizer UF to reduce the composition temperature, that is, we selected non hydrolytic sol-gel method, used industrial pure anhydrous zirconium tetrachloride and tetraethyl orthosilicate as precursors, and separately used alkali metal halide or alkaline earth metal halide as mineralizer. On the basis of previous research, we systematically studied the influence of preparation technology on the composition of zirconium silicate.

Because of the use of low-quality materials, ceramic factories usually add 2 ~ 3% zirconium silicate to the green body to add the whiteness of the green body, but the radioactivity of the green body can be overspent. According to the reaction information of each ceramic factory, the radioactivity of this kind of brick made by adding 3% Australian sand to the polished brick does not exceed the cost, and can reach the class a specification. If the calculation is based on this, the reference radioactivity content in the green body is about class a specification, that is, the radioactivity of the formula itself is appropriately high when the green body is not added with zirconium silicate, and the addition of 3% zirconium silicate just completes the change of radioactivity from quantity to quality. According to the above data, the author has calculated the manufacturing of various zircon sands. This accounting result is only a reference value. It is normal to change the data due to the difference of radioactivity of the green body itself. This accounting result is based on the radioactive results of the tested samples. The radioactive shake caused by the variation of zircon placer producing areas in various places is not included.