Iron oxide red and iron oxide brown microgranulates, a...

C - Chemistry – Metallurgy – 01 – G

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C01G 49/06 (2006.01) C04B 14/30 (2006.01) C08K 3/22 (2006.01) C09C 1/24 (2006.01) C09C 3/04 (2006.01) C09D 7/12 (2006.01) D21H 17/67 (2006.01)

Patent

CA 2026120

Iron Oxide Red and Iron Oxide Brown Microgranulates, a Process for their Preparation and their Use A B S T R A C T A process for the preparation of iron oxide red or iron oxide brown pigment microgranulates is dis- closed wherein aqueous suspensions comprising iron oxide yellow or iron oxide black are subjected to spray granulating drying and the microgranulates thus obtained, which have diameters of from 20 to 600µm, are tempered by heating at temperatures of from 200 °C to 1000 °C. Le A 27 208

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