High-purity titanium sesquioxide preparation method
A high-purity technology of dititanium trioxide, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve problems such as broken wires, high specific gravity, and poor separation effect, and achieve stable product quality, high yield, and separation ideal effect
Inactive Publication Date: 2019-05-21
雷雨婷
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Abstract
The invention discloses a high-purity titanium sesquioxide preparation method which comprises the steps of: mixing a titanium sesquioxide raw material with water, stirring, smashing, precipitating, drying and then smashing dry powder, wherein the concentration of a mixed solution of the titanium sesquioxide raw material and the water is 10 to 30%; in stirring, a pH value of a titanium sesquioxideraw material and dilute sulphuric acid solution is adjusted to 6.5 to 7.5; smashing after stirring and before precipitating is the smashing by a wet method smashing machine. The preparation method further comprises the step of performing classified separation treatment on the titanium sesquioxide raw material and dilute sulphuric acid solution at least twice, wherein the particle diameter of the titanium sesquioxide is between 0.35 and 0.5 mu m after primary classified separation treatment is performed on the titanium sesquioxide raw material and dilute sulphuric acid solution; the particle diameter of the titanium sesquioxide is between 0.2 and 0.35 mu m after secondary classified separation treatment. The preparation method comprises the step of performing surface treatment on the titanium sesquioxide raw material and dilute sulphuric acid solution subjected to precipitation, wherein a surface treating agent is dimethyl silicone. According to the preparation method disclosed by the invention, crude-fine secondary separation is utilized, so that a separation effect is ideal, the titanium sesquioxide yield can reach 98%, the preparation method is at an advanced level of the same industry at home and abroad, and product quality is stable.
Application Domain
Titanium dioxide
Technology Topic
TitaniumPrecipitation +7
Examples
- Experimental program(1)
Example Embodiment
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