Method for preparing high-purity zirconium oxide through purifying silicon removed zirconium

The invention relates to a method for preparing high-purity zirconium oxide through purifying silicon removed zirconium, and belongs to the technical field of chemical engineering material preparation. The method for preparing the high-purity zirconium oxide through purifying the silicon removed zirconium comprises the following steps: acidifying the silicon removed zirconium to convert zirconium oxide therein into zirconium sulfate, and roasting the zirconium sulfate at a high temperature to obtain the high-purity zirconium oxide. The method has the advantages of energy saving, production technology simplification, air pollution avoiding, and production efficiency improvement; and the zirconium oxide obtained after the purification of the silicon removed zirconium has the advantages of white color, realization of the ZrO2 mass content of not less than 99.8%, and low impurity content.