parsian mineral processing

Iron Oxide

about this product

A group of minerals and inorganic compounds made up of iron that is in +2 (ferrous) and +3 (ferric) valence states and oxygen in the -2 valence state, such as ferrous oxide, FeO, and ferric oxide, Fe2O3. Fe3O4 is a mixture of ferric oxide and ferrous oxide that commonly occurs in a fine-grained, magnetic crystalline form. Hematite, Fe2O3, the most common iron oxide, exists in several crystalline forms. Other forms of hematite are too abrasive to use as weighting material in drilling fluid.

Product Applications

Obtaining mud weights in excess of water and oil based drilling fluids

Description of the Product Applications

Hematite is a heavy and relatively hard oxide mineral, ferric oxide (Fe203) that constitutes the most important iron ore because of its high iron content (70 percent). The hematite ore used as a weighing agent in drilling fluids has a mica-like crystal structure ground to a practice size suitable for use in drilling fluids. Higher density Hematite occupies less space, which allows more room for water, thereby reducing the interaction between solids. Since Hematite has a specific gravity of above 5.05 gm/cc, it is preferred over Barites to dig deeper wells and also known to perform better that Barites or Barytes.


Hematite is used to obtain mud weights in excess of 20.0ppg in water based drilling fluids, 19.0ppg in oil based drilling fluids, or any time that exceptional control is required of solids percentage for rheology control.

Hematite has a specific gravity of > 5, which is 19% greater than the density of BARITE (4.1). Thus, for a given mud weight, a system weighted with hematite will contain fewer solids by volume. A lower solids concentration will contribute to improved rheological properties, improved penetration rate and decreased overall mud costs.



Iron Oxide


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