High-purity titanium sesquioxide preparation method

[0013] Example: Add 800 kilograms of raw material titanium oxide and 3200 kilograms of secondary purified water into a stirring tank, prepare a 25% concentration solution, stir for half an hour, and adjust the pH value to 6.5 while stirring, and then pass the GSF high efficiency The wet pulverizer is used for pulverization, stirring, and pulverization. The pulverization is repeated for 1.5 hours, and then pumped into the GSDF25J ultra-fine separator for a fractionation. The particle diameter of the titanium trioxide after fractionation and separation is 0.4μm. Then it is pumped into the GSDF10 ultra-fine separator for secondary fractionation. The particle diameter of the titanium trioxide after the secondary fractionation treatment is 0.3μm. After the secondary fractionation, the titanium dioxide raw material and the dilute sulfuric acid solution are sent to the precipitation tank, 80 kg of ammonium bicarbonate precipitation agent is added, and the mixture is stirred. After precipitation for 8 hours, the clear water is discharged, and the precipitated concentration is 33% trioxide The di-titanium raw material and dilute sulfuric acid solution are pumped to the surface treatment tank, 4 kg of dimethyl silicone oil surface treatment agent is added to the surface treatment tank, stirred for 1 hour for surface treatment, and then pumped to the 1000 spray drying tower for drying Treatment, the temperature of the drying treatment is 360℃, after 3 minutes of drying treatment, the raw material of titanium dioxide and dilute sulfuric acid solution will become 784 kg dry powder of titanium trioxide. The dry powder of titanium trioxide will be sent to the silo and sent to the crusher by mechanical vibration. Crushing, sending the pulverized dry titanium dioxide powder to the finished product silo for automatic measurement and packaging.