Iron Oxides


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Iron Oxides

 

compounds of divalent and trivalent iron with oxygen: ferrous oxide, FeO; ferric oxide, Fe2O3; and fertosoferric oxide, Fe3O4. Natural iron oxides (the minerals hematite, Fe2O3, and magnetite, Fe3O4) are raw materials in producing iron. Iron oxides are used as pigments; ferromagnetic iron oxides (Fe3O4 and γ-Fe2O3) are used in making magnetic materials.

References in periodicals archive ?
Jackson J (1958) Removal of free iron oxides from soils of clays.
Charles Hoover, president of Hoover Color Corporation said "Over the last 25 years, Cathay Industries has led the restructuring of the iron oxide industry through innovative technology, and this partnership cements the relationship our two companies have developed over the last two decades.
Bayferrox synthetic iron oxide pigments based on the Laux manufacturing process demonstrate excellent performance characteristics, particularly when used with polyolefins.
The lower the impurity level and, particularly, the iron oxide content of the sand, the greater the sensitivity of the system to porosity.
Types of pigments: Blacks (black, brown and grey), Blues (phthalocyanine pigments), Extender Pigments (China clay, AL silicate, mica), Greens (phthalocyanine chrome), Iron Oxide Pigments (transporations oxides, black IO, red brown IO, Yellow IO), Metallic Pigments (silverflake), Reds (diketopyrrolo pyrolle pigments, quinacridone pigments, pyrazolone red and maroon, pigment red and maroon, misc.
However, iron oxides do not completely eliminate problems like veining, and hinder sand flowability while tending to build up on tooling.
Types of pigments: Blacks (Carbon black dispersions, conductive black dispersions), Blues (Phthalo blue dispersions), Greens (Phthalo green dispersions), Iron oxide pigments (Red, yellow, brown, black dispersions), Reds (Toluidine, organic, brilliant red dispersions), Yellow and Oranges (Permanent, ferrite, diarylide, diamisdine, dimtranine oranges, yellow dispersions)
The blast furnace is a counter-current exchanger of heat and mass in which descending iron oxide (|Fe.
pigment extenders and reinforcers); Greens (chrome green, phthalocyanine green); Iron oxide pigments (transparent iron oxides); Metallic pigments (pearlescent, special effects); Reds (diketopyrrolo pyrolle [DPP], quinacridone pigments, pyrazolone red and maroon, pigment scarlet, perylene red and maroon, misc.
Inorganic transparent iron oxides screen out harmful uv radiation, help meet FDA requirements for food contact, and are an inexpensive way of pigmenting plastic bottles, medicine vials, film, and fiber.