High purity magnetism 10-20um natural magnetite iron ore powder

1. Black iron oxide is used as an iron source in ceramic applications, especially in glazes where price and black primary color are important. Iron oxide provides the color in the glaze after firing at high temperatures. High purity, low heavy metal content grades are available. Our black iron powder products contain 98% or more Fe3O4. Magnetite 99% Fe3O4 (black iron oxide)

2. Black iron powder is also widely used as a colorant for non-ceramic products.

3. Some iron oxide pigments are widely used in cosmetic field. They are considered non-toxic, moisture-proof and bloodless. Cosmetic-safe iron oxides are produced synthetically to avoid the inclusion of impurities normally found in natural iron oxides.

4. Black iron oxide or magnetite is also used for corrosion resistance purpose. Black iron oxide is also used in anti-corrosion coatings (for many bridges and the Eiffel Tower).

5. Iron oxides are used as contrast agents in magnetic resonance imaging to shorten proton relaxation times (T1, T2 and T2). Superparamagnetic contrast agents consist of a water-insoluble crystalline magnetic core, usually magnetite (Fe3O4). Average core diameters ranged from 4 to 10 nm. This crystalline core is usually surrounded by a layer of dextrin or starch derivatives. The overall size of the particles is expressed as the mean hydrated particle diameter