Zirconium silicate production of many impurities, these impurities can be divided into: 1, harmful impurities of Fe2O3, TiO2, and Al2O3, general zirconium silicate production enterprises have the ability to iron impurities removal, TiO2 and Al2O3 to remove difficult ; 2, generally harmless impurities of SiO2 and HfO2 (hafnium oxide), the impurities within the content ranges from basic sound, and over this range is not only harmful, but a great impact on the ceramic glaze and green body, such as SiO2 more marked when glazed prone to post-burst, can easily reach the national inspection standards; trace alkali impurities Na2O, K2O and P2O5, these impurities because its content is very little and help melt the role of the oxide, even if sometimes exceeded, nor will the products pose a great threat; radioactive impurities Ra226, Th232, K40, zirconium silicate and fluorite radioactive higher raw materials, feldspar, sand, stone dust, etc., followed. Production of zirconium silicate and ceramic production 'stability overrides everything', the stability of high-grade zirconium silicate sand source should include stabilizing treatment and stabilization treatment of the production of stable handling and finished powder performance. Zirconium silicate sand, zircon, high-grade zirconium silicate sand for Australian premium zircon sand, U.S. sand source is stable and is not yet clear, the South African sand hardness, impurity content is slightly higher, Vietnam sand and the South China Sea, sand, high-quality sand, the sand source of stability is still a problem. Require homogenization of the raw materials in the actual production of zirconium silicate production enterprises, as long as the imports of Australia's large-scale placer company produced high-quality zircon sand into the factory to stringent testing, basic without homogenization, because these materials in large-scale mining companies are processing.
