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Information @ a Glance

General
  • Iron(III) oxide — also known as ferric oxide, Hematite, red iron oxide, synthetic maghemite, colcothar, or simply rust — is one of several oxide compounds of iron, and has paramagnetic properties.
  • The mineral form of ferric oxide is hematite; it is mined as the main ore of iron.
  • Fe2O3 is very affected by a reducing atmosphere where it can act as a flux in both bodies and glazes at high temperatures.
  • Fe3O4 can either be a mix of FeO and Fe2O3 resulting from an incomplete conversion from one type to the other, or it can be a completely different mineral form of iron known as magnetic iron oxide from the ore magnetite.

Preparation

  • The preparation of a pure ferric oxide nanoparticulate LB film, has a three-dimensional ordered structure and good gas-sensing properties towards alcohols at room temperature.
  • Acicular gamma-iron(III) oxide is manufactured by reacting an iron(II) salt solution with an aqueous solution of an alkali metal hydroxide and oxidizing the resulting suspension of iron(II) hydroxide in three stages.
  • The preparation and characterization of a ferric oxide nanoparticle–copper phthalocyanine derivative hybrid LB film, a kind of one-dimensional superlattice, are described.

Applications

  • Primarily used in the final finish (colouring) of gold and silver, it is the finest of all rouges. The abrasive is Ferric Oxide. It also produces an excellent finish on brass.
  • Iron(III) oxide is often used in magnetic storage, for example in the magnetic layer of floppy disks. These consist of a thin sheet of PET film, coated with iron(III) oxide.
  • Iron(III) oxide is used in the production of pure iron in a blast furnace.

Technology

  • A nanoparticulate ferric oxide–copper tris(2,4-di-tert-amylphenoxy)-8-quinolinolylphthalocyanine hybrid ultrathin film was constructed from alternate layers by the Langmuir–Blodgett technique.
  • One technique,  is based on freezing and thawing.It leads to the formation of dense Hydrous ferric oxides(HFO) aggregates and improves the filtration and drying behavior.

Market

  • The production capacity of ferric oxide in China exceeded 700 kiloton, the total output to 622.7 kiloton and export volume to 329.5 kiloton. Ferric oxide products are mainly exported to North America, Europe and Southeast Asian.
  • The scale expansion of Chinas ferric oxide industry has not only drew wide attention from relevant industries such as steel industry, smelting industry, titanium industry and sulfuric acid industry, but also attracted oversea manufacturers and sales companies.

  • U.S. market for iron and iron oxide powder is estimated to be $756 million. Metallic iron-base powder accounts for $373 million and iron oxide powders for $383 million.

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