Clean production method of titanium dioxide and titanium yellow powder

A technology of titanium dioxide and titanium yellow powder, which is applied in the directions of titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide, etc., can solve the problems of low utilization rate of resources, pollute the environment, a large amount of waste gas and waste water, etc., to reduce the discharge of three wastes and save energy Production cost and energy consumption, the effect of saving production cost

Active Publication Date: 2017-06-13
攀枝花中达钛业科技有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the existing method for producing titanium yellow powder

Method used

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Embodiment Construction

[0036] The invention provides a method for clean production of titanium dioxide and titanium yellow powder, comprising the following steps:

[0037] a. Mechanical activation of titanium fine powder

[0038] Mill the titanium fine powder for more than 1.5 hours, and make the 400-mesh sieve ≤0.2%, and make activated titanium fine powder;

[0039] b. Normal pressure acid hydrolysis

[0040] Take the activated titanium fine powder prepared in step a, add concentrated hydrochloric acid, heat to 85-95°C, and carry out acidolysis reaction;

[0041] c. Hot filtration and extraction

[0042] Filter the material after acid hydrolysis in step b, wash the filter cake with dilute hydrochloric acid and water for 1 to 3 times, extract the filtrate with a composite extractant, and separate the titanium liquid and iron;

[0043] d. Hydrolysis of titanium liquid

[0044] Heat the titanium solution obtained in step c to 85-95°C, pour it into a hydrolysis pot pre-installed with hot water, and...

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Abstract

The invention belongs to the technical field of titanium product production, particularly relates to a clean production method of titanium dioxide and titanium yellow powder, and aims to solve the problems that an existing titanium yellow powder production method generates a large amount of waste gas and waste water, is low in resource utilization rate, pollutes environments, and the like. The cleaning production method includes: mechanically activating fine titanium powder, performing normal-pressure acid hydrolysis, performing thermal filtration and extraction, performing titanium liquid hydrolysis, washing, drying, calcining to prepare the titanium yellow powder, performing pressurized acid leaching to prepare the titanium dioxide, and the like. The clean production method has the advantages that a titanium yellow powder production process, a titanium dioxide production process, a hydrochloric acid concentration process and the like are combined effectively, production waste acid can be recycled basically, the discharge of the waste gas, the waste water and industrial residues is reduced, and production cost and energy consumption are reduced; industrial production of the titanium yellow powder and the titanium oxide can be achieved by the method, and the method is environmentally friendly, capable of saving energy and reducing consumption, capable of saving production cost and good in economic benefits.

Description

technical field [0001] The invention belongs to the technical field of titanium product production, and in particular relates to a method for clean production of titanium dioxide and titanium yellow powder. Background technique [0002] my country is a big country in the ceramic industry, and titanium frit is one of the main raw materials for preparing ceramics. It is mainly used for the impermeable bottom glaze of interior wall tiles, the bottom glaze and surface glaze of exterior wall tiles and floor tiles. At present, the titanium frit preparation enterprises in my country use relatively single titanium raw materials, which are basically non-paint grade anatase titanium dioxide produced by sulfuric acid method. The production of titanium dioxide by the sulfuric acid method is to use titanium fine powder or acid-soluble titanium slag and sulfuric acid for acid hydrolysis to obtain a titanyl sulfate solution, which is hydrolyzed to obtain metatitanic acid precipitation, and...

Claims

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Application Information

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IPC IPC(8): C01G23/053C09C1/36
CPCC01G23/0536C01P2006/80C09C1/3607
Inventor 郭小强金斌
Owner 攀枝花中达钛业科技有限公司
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