Title:
METHOD FOR PREPARING HIGH TEMPERATURE RESISTANT BISMUTH YELLOW PIGMENT UNDER MECHANOCHEMICAL ASSISTANCE
Document Type and Number:
WIPO Patent Application WO/2020/113961
Kind Code:
A1
Abstract:
The present invention provides a method for preparing a high temperature resistant bismuth yellow pigment under mechanochemical assistance. The method comprises: mixing an oxide which is used as a matrix and a dopant with a bismuth source, a vanadium source, or a molybdenum source, and placing the mixture into a mill for controlled grinding to obtain a precursor; further calcining and pulverizing the precursor to obtain high temperature resistant bismuth yellow pigment powder. The bismuth yellow pigment produced in the present invention has a bright color, and a b* value is greater than 90; the performance is stable, and the heat resistance can reach 800 °C or higher. By adoption of a mechanical grinding method, the preparation process is environmentally friendly, and no three wastes are produced, and reaction conditions are simple. Doping of BiVO4 crystal lattices by introducing oxides can be achieved, so that the particle size and particle size distribution of the bismuth yellow pigment can be effectively controlled while the color performance of the bismuth yellow pigment is greatly improved; on the basis of the oxide doping, the heat resistance of the bismuth yellow pigment can be significantly improved without covering the surface of bismuth vanadate with a layer of solid deposits.
Inventors:
MOU BIN (CN)
WANG AIQIN (CN)
WANG XIAOWEN (CN)
HUI AIPING (CN)
KANG YURU (CN)
WANG WENBO (CN)
ZONG LI (CN)
ZHU YONGFENG (CN)
WANG QIN (CN)
WANG AIQIN (CN)
WANG XIAOWEN (CN)
HUI AIPING (CN)
KANG YURU (CN)
WANG WENBO (CN)
ZONG LI (CN)
ZHU YONGFENG (CN)
WANG QIN (CN)
Application Number:
PCT/CN2019/095877
Publication Date:
June 11, 2020
Filing Date:
July 12, 2019
Export Citation:
Assignee:
LANZHOU INST CHEMICAL PHYSICS CAS (CN)
International Classes:
C09C3/04; C09C1/00; C09C3/06
Foreign References:
| CN109439021A | 2019-03-08 | |||
| CN107760063A | 2018-03-06 | |||
| CN107760062A | 2018-03-06 | |||
| US5399335A | 1995-03-21 |
Other References:
GUANGCHAO DU ET AL: "Preparation of Bismuth Vanadate Pigment by Solid-state Calcination", IRON STEEL VANADIUM TITANIUM, vol. 37, no. 05, 15 October 2016 (2016-10-15), pages 35 - 42, XP009521609, ISSN: 1004-7638, DOI: 10.7513/j.issn.1004-7638.2016.05.007
Attorney, Agent or Firm:
LANZHOU ZHIHE PATENT LAW FIRM (GENERAL PARTNERSHIP) (CN)
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