Clean production method of titanium dioxide and titanium yellow powder

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...

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 produces a large amount of waste gas and waste water, the resource utilization rate is low and the environment is polluted, etc.