US 11,999,856 B2
Method for mechanochemical preparation of high temperature-resistant bismuth yellow pigment
Bin Mu, Lanzhou (CN); Aiqin Wang, Lanzhou (CN); Xiaowen Wang, Lanzhou (CN); Aiping Hui, Lanzhou (CN); Yuru Kang, Lanzhou (CN); Wenbo Wang, Lanzhou (CN); Li Zong, Lanzhou (CN); Yongfeng Zhu, Lanzhou (CN); and Qin Wang, Lanzhou (CN)
Assigned to LANZHOU INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES, Gansu (CN)
Appl. No. 17/269,803
Filed by LANZHOU INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES, Lanzhou (CN)
PCT Filed Jul. 12, 2019, PCT No. PCT/CN2019/095877
§ 371(c)(1), (2) Date Feb. 19, 2021,
PCT Pub. No. WO2020/113961, PCT Pub. Date Jun. 11, 2020.
Claims priority of application No. 201811489453.X (CN), filed on Dec. 6, 2018.
Prior Publication US 2021/0317316 A1, Oct. 14, 2021
Int. Cl. C09C 1/00 (2006.01); C09C 3/00 (2006.01); C09C 3/04 (2006.01)
CPC C09C 1/0006 (2013.01) [C09C 3/006 (2013.01); C09C 3/041 (2013.01); C09C 3/043 (2013.01); C01P 2006/37 (2013.01); C01P 2006/62 (2013.01); C01P 2006/63 (2013.01); C01P 2006/64 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method for preparation of a high temperature-resistant bismuth yellow pigment above 800° C., comprising the following steps:
mixing oxides served as a matrix and dopant with bismuth source, and vanadium source or vanadium and molybdenum source to obtain a mixture,
placing the mixture into a mill for grinding to obtain a precursor; and
calcining and crushing the precursor to obtain the high temperature-resistant bismuth yellow pigment,
wherein the oxides served as the matrix and the dopant are composed of silica, aluminum oxide and divalent metal oxides with a mass ratio of 1:0.1:0.1-1:20:10,
wherein a mass ratio of ball to the mixture is 5-50, a grinding speed is 100-1200 rpm, and a grinding time is 30-360 min during grinding, and
wherein a calcination temperature of the precursor is 300-800° C., and a calcination time is 30-240 min.