Titanium dioxide slurry pretreatment method

A titanium dioxide slurry and pretreatment technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve problems that need to be improved, and achieve the effects of avoiding flocculation and agglomeration, improving cooling efficiency, and improving dispersibility

Active Publication Date: 2014-04-02
YUNNAN METALLURGICAL XINLI TITANIUM IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the current means of preparing titanium dioxide still needs to be improved

Method used

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  • Titanium dioxide slurry pretreatment method
  • Titanium dioxide slurry pretreatment method
  • Titanium dioxide slurry pretreatment method

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Embodiment Construction

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0024] In the present invention, terms such as "connected", "connected" and "fixed" should be interpreted in a broad sense unless otherwise clearly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integrated Connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings...

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Abstract

The invention discloses a titanium dioxide slurry pretreatment method. The method comprises the following steps of: performing wet grinding on titanium dioxide slurry through a sand grinding machine; grading the titanium dioxide slurry subjected to wet grinding through a hydrocyclone; returning particles with particle size exceeding preset particle size to perform wet grinding again; and collecting particles of which the particle size is less than the preset particle size for performing enveloping process. With the adoption of the method, the problem of flocculation and caking of titanium dioxide under slurrying can be avoided, thus titanium dioxide slurry with outstanding particle-size distribution and capable of effectively serving for the enveloping process can be obtained.

Description

technical field [0001] The invention relates to the field of chemical industry. Specifically, it relates to a pretreatment method for titanium dioxide slurry. Background technique [0002] At present, the methods for producing titanium dioxide mainly include sulfuric acid method and chloride method. Due to the long process of the sulfuric acid method, serious pollution and poor product quality, it was gradually replaced by the chlorination method. [0003] CN1066043 discloses a process for preparing rutile titanium dioxide, which includes 1) uniformly mixing high-titanium slag and petroleum coke into a chlorination furnace, feeding chlorine gas to carry out boiling chlorination at a temperature of 800-900°C 2), the crude titanium tetrachloride obtained after chlorination is separated and purified to remove impurities such as magnesium, iron, silicon and vanadium, to obtain refined titanium tetrachloride, 3), the refined titanium tetrachloride liquid obtained In the evapor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/07
Inventor 汪云华李建军江书安闻灼章谭兆川杨英李海艳
Owner YUNNAN METALLURGICAL XINLI TITANIUM IND CO LTD
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