particle size nm
specific surface area m2/g
1 is used as analytical reagent, pigment preparation and electronic industry.
2, used as pigment for watercolor, oil color and ink. The coating industry is used to manufacture antirust paints and other primers. The construction industry is used for coloring artificial marble and cement floors. The electronic telecommunications industry is used to make magnetic steel and also as a cathode plate for alkaline dry batteries. Used in steel flaw detection in machine manufacturing.
3, used for pigments and polishing agents, etc., used for coloring coatings, plastics and building surfaces.
4, metallurgy, electronics and textile industries, as well as pigments and glass colorants used as catalysts, polishing agents, paints and ceramics.
5, ceramics, nano-ceramics, composite ceramic substrates, ferrite materials.
6, anti-ultraviolet material, microwave absorption material.
7. Magnetic sealing, using the magnetism and dark black color of nano Fe3O4 powder, it can make magnetic recording materials, high gradient magnetic separators, microwave absorbing materials, special coatings and electrostatic copying developer