Method for mechanochemical preparation of high-performance iron red/clay mineral hybrid pigment

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United States of America Patent

PATENT NO 11767432
APP PUB NO 20210301142A1
SERIAL NO

17269767

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Abstract

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The disclosure relates to a method for mechanochemical preparation of an iron red pigment, which comprise steps: mixing a clay mineral, a soluble iron source and an alkali source in a mill for grinding to obtain a precursor, wherein the ratio of ball to material is controlled at 20-50, the grinding speed is 300-1200 rpm, and the grinding time is 30-360 min; and calcining the precursor at 500-900° C. for 30-120 min to obtain a high-performance iron oxide red/clay mineral hybrid pigment. The iron oxide red/clay mineral hybrid pigment has a bright and beautiful color, high-temperature and acid resistance, and can satisfy requirements for high-performance iron oxide red pigments in fields of paints, inks, ceramics, anti-corrosive coatings, etc. Furthermore the method is a simple process without waste that is environmentally friendly and suitable for industrialized production, thus it is expected to replace existing processes of iron oxide red pigments.

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Patent Owner(s)

Patent OwnerAddress
LANZHOU INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCESLANZHOU 730000

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hui, Aiping Lanzhou, CN 4 0
Kang, Yuru Lanzhou, CN 4 0
Mu, Bin Lanzhou, CN 27 25
Wang, Aiqing Lanzhou, CN 2 2
Wang, Qin Lanzhou, CN 181 661
Wang, Wenbo Lanzhou, CN 145 1120

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