This paper introduces functions and methods of surface treatment of inorganic pigment; analyzes mechanism of operation and tells selection of surfactants and treatment methods.

The application of inorganic nanometer pigment in the coating of paper-making is described, the existing problems and potential application are also discussed.

Iron oxide pigments are the second largest output and consumption inorganic pigments only next to titanium pigment and the largest volume colored inorganic pigments and are used widely in many fields.