Method for preparing zirconium iron pink pigment from electrically-melted zirconium oxide

Abstract

The invention discloses a method for preparing zirconium iron pink pigment from electrically-melted zirconium oxide. The method comprises the following steps of: 1) reshaping crystal appearance, namely performing zirconium oxide crystal appearance spheroidization on the common electrically-melted zirconium oxide powder by using a special device, so that the appearance of the electrically-melted zirconium oxide tends to be close to a spherical state; 2) removing impurities, namely washing the product obtained in the step 1) with diluted acid until the content of the impurities such as aluminium oxide (Al2O3), ferric oxide (Fe2O3), silicon oxide (SiO2), phosphorus pentoxide (P2O5) and the like is less than 0.1 percent, and then drying; 3) controlling granularity, namely grinding the electrically-melted zirconium oxide with impurities removed and controlling the granularity of the electrically-melted zirconium oxide to be 0 to 5 mu m; and 4) preparing samples, namely weighing the electrically-melted zirconium oxide obtained in the step 3), zirconium iron pink and other raw materials, mixing the materials completely and uniformly, grinding the mixture finely, heating the mixture to calcine for 5 hours, preserving heat for 1 hour when the temperature is 1,000 to 1,100 DEG C, cooling, and taking out the product. By the method, influence of reaction impurities is removed; reaction activity is improved; and the zirconium iron pink pigment is prepared from the electrically-melted zirconium oxide instead of zirconium, so the production cost of the zirconium iron pink pigment is reduced.

Description

technical field [0001] The invention relates to a method for producing zirconium-iron red material by electric melting zirconia. Background technique [0002] At present, the ceramic color industry rarely uses fused zirconia to produce zirconium iron red material, mainly because the synthesis principle of zirconium iron red material is different from other zirconium series pigments such as praseodymium yellow and vanadium blue, etc. zirconium iron red material belongs to half package Type colorant. However, fused zirconia cannot meet the requirements of chemical zirconium in terms of composition and activity. The content of alumina and titanium oxide impurities in fused zirconia is high and the reactivity is low, so it cannot replace chemical zirconium to produce zirconium iron red material, but The high production cost of chemical zirconium leads to high production cost of zirconium iron red material. Contents of the invention [0003] The technical problem to be solved...

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Problems solved by technology

However, fused zirconia does not meet the requirements of chemical zirconium in terms of composition and activity. The content of alumina and titanium oxide impurities in fused zirconia is high and the reactivity is low. Therefore, it cannot replace chemical zirconium to produce zirconium iron red material, but The high production cost of chemical zirconium leads to high production cost of zirconium iron red material

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