Unlock instant, AI-driven research and patent intelligence for your innovation.

Production method for preparing titanium dioxide by seed crystal

A production method and technology for titanium dioxide, applied in chemical instruments and methods, inorganic pigment processing, fibrous fillers, etc., can solve the problems of uneven titanium dioxide film layer, high cost of coating process, low whiteness, etc., to save Production equipment and production time, high practical value, uniform effect of coating film layer

Active Publication Date: 2014-05-07
LOMON BILLIONS GRP CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problems to be solved by the present invention are the high cost of the coating process in the existing titanium dioxide production process, the uneven film layer of the coated titanium dioxide, low whiteness, and yellowish phase technical problems

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The present invention provides a production method for preparing titanium dioxide using seed crystals. The method includes calcining metatitanic acid to obtain titanium dioxide, performing wet grinding, beating and dispersing, and then sand-milling, and then sand-milling the titanium dioxide. The white powder is subjected to coating treatment, and the coating treatment method includes the following steps: (1) Add calcined seed crystals—orthotitanic acid to the sand-milled titanium dioxide, and stir uniformly at the same time to change the titanium dioxide Surface characteristics; (2) The titanium dioxide in step (1) is coated with silicon; (3) The titanium dioxide in step (2) is washed with water; (4) The titanium dioxide in step (3) is flashed Steaming treatment; (5) steaming the titanium dioxide in step (4); (6) collecting the titanium dioxide in step (5) to obtain finished titanium dioxide. The seed crystal used in step (1) is the same seed crystal used as the nucleu...

Embodiment 2

[0013] The present invention provides a production method for preparing titanium dioxide using seed crystals. The method includes calcining metatitanic acid to obtain titanium dioxide, performing wet grinding, beating and dispersing, and then sand-milling, and then sand-milling the titanium dioxide. The white powder is subjected to coating treatment, and the coating treatment method includes the following steps: (1) Add calcined seed crystals—orthotitanic acid to the sand-milled titanium dioxide, and stir uniformly at the same time to change the titanium dioxide Surface characteristics; (2) The titanium dioxide in step (1) is coated with zirconium; (3) The titanium dioxide in step (2) is washed with water; (4) The titanium dioxide in step (3) is flashed Steaming treatment; (5) steaming the titanium dioxide in step (4); (6) collecting the titanium dioxide in step (5) to obtain finished titanium dioxide. The seed crystal used in step (1) is the same seed crystal used as the nucl...

Embodiment 3

[0015] The present invention provides a production method for preparing titanium dioxide using seed crystals. The method includes calcining metatitanic acid to obtain titanium dioxide, performing wet grinding, beating and dispersing, and then sand-milling, and then sand-milling the titanium dioxide. The white powder is subjected to coating treatment, and the coating treatment method includes the following steps: (1) Add calcined seed crystals—orthotitanic acid to the sand-milled titanium dioxide, and stir uniformly at the same time to change the titanium dioxide Surface characteristics; (2) Al-coating the titanium dioxide in step (1); (3) Washing the titanium dioxide in step (2); (4) Flashing the titanium dioxide in step (3) Steaming treatment; (5) steaming the titanium dioxide in step (4); (6) collecting the titanium dioxide in step (5) to obtain finished titanium dioxide. The seed crystal used in step (1) is the same seed crystal used as the nucleus of hydrolyzed particles a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a production method for preparing titanium dioxides by seed crystals. The method comprises the following steps: meta-titanic acid is calcined to obtain titanium dioxides, the titanium dioxides are processed through wet grinding, pulp beating, dispersing, and sanding, and then the titanium dioxides processed through sanding are subject to coating processing; the coating processing method comprises the following steps: (1) the calcined seed crystals are added in the sanded titanium dioxides to be mixed uniformly for changing the surface properties of the titanium dioxides; and (2) the titanium dioxides obtained from the step (1) are silicon-coated, zirconium-coated or singly aluminium-coated. In the technical scheme, the seed crystals and the sanded titanium dioxides are completely mixed through the characteristic of the high surface free energy of the seed crystals, and the surface adsorbability of titanium dioxide particles is improved, so that the effect of coating titanium dioxides with silicon, zirconium and aluminium is promoted, the coated film layers of the titanium dioxides are uniform, the whiteness of the titanium dioxides is improved, and the titanium dioxides produced through the process are in the slight blue phase.

Description

technical field [0001] The invention relates to a production method of titanium dioxide, in particular to a production method for preparing blue phase rutile titanium dioxide by using crystal seeds. Background technique [0002] With the continuous development of the economy and society, the market has put forward higher requirements for the weather resistance, hue and whiteness of titanium dioxide, and the key process to improve the hue and whiteness of titanium dioxide lies in the coating process. At present, the production of titanium dioxide The coating technology used in the industry is mainly to use titanyl sulfate to treat the surface of titanium dioxide, and then to coat silicon and aluminum to complete the coating process requirements. The titanium dioxide prepared in this way has the following defects: 1. Coating 2. Due to the inorganic characteristics of the surface of titanium dioxide, the adsorption of the surface of titanium dioxide is poor, so the film layer o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/36C09C3/06
Inventor 杨民乐陈建立陈晓丽陈彦君吴彭森赵波
Owner LOMON BILLIONS GRP CO LTD