Preparation system and method for external seed crystal index optimization

A technology of index optimization and addition of crystal seeds, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of the quality of titanium dioxide needs to be improved and the titanium base is low, and achieve the effect of improving the quality and improving the hydrolysis efficiency.

Pending Publication Date: 2022-04-12
XIANGYANG LOMON TITANIUM IND CO LTD
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Problems solved by technology

[0005] Aiming at the problems in the prior art that the ratio of titanium to alkali is low and the quality of titanium dioxide needs to be improved, the present invention provides a preparation system and m

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  • Preparation system and method for external seed crystal index optimization

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Embodiment 1

[0038] A preparation system with an optimized index of external seed crystals, comprising a titanium liquid preheater, an alkali liquid preheater, a seed crystal preparation tank and a hydrolysis tank, the titanium liquid preheater and the alkali liquid preheater are respectively connected with the seed crystal preparation The tank is connected, the seed crystal preparation tank and the titanium liquid preheater are both connected to the hydrolysis tank, and the titanium liquid preheater and the hydrolysis tank are both connected to a steam washing system.

[0039] A hot water preheater is also included, and the hot water preheater is connected with the hydrolysis tank and the steam washing system.

[0040] It also includes a saturated steam pipe, which is connected with a titanium liquid preheater, an alkali liquid preheater, a hot water preheater and a seed crystal preparation tank.

[0041] The steam scrubbing system includes a cyclone scrubber, the inlet of the cyclone scr...

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Abstract

The invention discloses a preparation system and a preparation method for external seed crystal index optimization, belongs to the technical field of titanium dioxide preparation, solves the problems of low titanium alkali content and to-be-improved titanium dioxide quality in the prior art, and comprises a titaniferous solution preheater which is connected with an alkali liquor preheater and a seed crystal preparation tank, the seed crystal preparation tank is connected with a hydrolysis tank, the titaniferous solution preheater, the alkali liquor preheater and the hydrolysis tank are connected with a steam washing system, and the titaniferous solution preheater is connected with the hydrolysis tank, so that the technical effects of improving the stability of the hydrolyzed seed crystal and controlling the alkali-titanium ratio and the quality of a finished product are achieved.

Description

technical field [0001] The invention belongs to the technical field of titanium dioxide preparation, and in particular relates to a preparation system and method for optimizing the indexes of external seed crystals. Background technique [0002] Hydrolysis of concentrated titanium solution is the key technology for titanium dioxide production. Titanium oxysulfate in concentrated titanium solution is hydrolyzed at high temperature to generate metatitanic acid. For pigment grade titanium dioxide, the quality of finished titanium dioxide depends to a large extent on the particle size of titanium dioxide. and particle size distribution. The particle size and distribution of metatitanic acid particles will also affect the quality of water washing. If the particle size is too small, it will easily block the filter cloth and cause washing difficulties; , leading to a decrease in yield; too fine metatitanic acid particles will also cause easy sintering during calcination and affect...

Claims

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Application Information

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IPC IPC(8): C01G23/053
Inventor 靳三良卢慧军朱严胡海军
Owner XIANGYANG LOMON TITANIUM IND CO LTD
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