A continuous hydrolysis system and method for sulfuric acid process titanium dioxide

By using a continuous hydrolysis system and method, the efficiency and stability issues of the hydrolysis process in the sulfuric acid process for titanium dioxide production have been resolved, achieving efficient and stable production of metatitanic acid to meet industrial production needs.

CN116692939BActive Publication Date: 2026-05-29PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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Patent Information

Application Number
CN202310757329.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-06-25
Publication Date
2026-05-29
Estimated Expiration
2043-06-25

AI Technical Summary

Technical Problem

The hydrolysis process in the existing sulfuric acid process for titanium dioxide production is intermittent, resulting in low production efficiency, high labor intensity, and large fluctuations in product quality, making it difficult to meet the requirements of continuity and stability in industrial production.

Method used

A continuous hydrolysis system is adopted, including a hydrolysis device, temperature control pipeline, metatitanic acid storage tank and steam pipeline. Concentrated titanium liquid and alkali liquid are continuously pumped, and multiple preheating tanks and mixing tanks are used for temperature control and mixing to achieve continuous mixing and heating, forming a stable metatitanic acid product.

Benefits of technology

This significantly improves production efficiency, reduces labor intensity, promotes fully automated production of titanium dioxide using the sulfuric acid process, and enhances product quality stability.

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Abstract

The application discloses a continuous hydrolysis system for sulfuric acid method titanium dioxide, which comprises a hydrolysis device, a temperature control pipeline, a metatitanic acid storage tank and a steam pipeline, wherein the hydrolysis device comprises a first preheating tank, a second preheating tank, a third preheating tank, a hydrolysis crystal seed preparation tank and a continuous mixing tank, the bottoms of the first preheating tank and the second preheating tank are communicated with the top of the hydrolysis crystal seed preparation tank respectively, and the bottoms of the third preheating tank and the hydrolysis crystal seed preparation tank are communicated with the top of the continuous mixing tank respectively; a pipeline heater and a pipeline cooler are sequentially connected between a first pipe opening and a second pipe opening of the temperature control pipeline, the first pipe opening is communicated with the continuous mixing tank, and the metatitanic acid storage tank is communicated with the second pipe opening. The application further provides a continuous hydrolysis method. The system and the method can convert the intermittent titanium liquid hydrolysis process into a continuous production, greatly improve the production efficiency, reduce the labor intensity of operation, and are favorable to promote the full-automatic production of the sulfuric acid method titanium dioxide.
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