Iron oxide is the second largest inorganic pigment after titanium dioxide and also the largest colored inorganic pigment. Iron oxide pigments mainly refer to four types of coloring pigments, namely iron oxide red, iron yellow, iron black, and iron brown, based on iron oxides. Among them, iron oxide red is the main pigment (accounting for about 50% of iron oxide pigments), and mica iron oxide used as anti rust pigments and magnetic iron oxide used as magnetic recording materials also belong to the category of iron oxide pigments.
In the building materials industry, iron oxide is mainly used for colored cement, colored cement floor tiles, colored mortar, colored asphalt, artificial marble, and wall painting; Used for coloring and protecting various coatings, including water-based interior and exterior wall coatings, powder coatings, etc; It can also be applied to various primers and topcoats such as epoxy, alkyd, amino, etc. for oily paints; Iron red primer has rust prevention function and can replace expensive red lead paint, saving non-ferrous metals.
Used for coloring plastic products, such as thermosetting and thermoplastic plastics, as well as coloring rubber products, such as automotive inner tubes, aircraft inner tubes, bicycle inner tubes, etc. It is used for polishing advanced fine grinding materials, precision hardware instruments, optical glass, etc. High purity is the main base material for powder metallurgy, used for smelting various magnetic alloys and other advanced alloy steels.