nivo slider image nivo slider image nivo slider image nivo slider image nivo slider image nivo slider image nivo slider image nivo slider image nivo slider image nivo slider image nivo slider image nivo slider image nivo slider image nivo slider image nivo slider image nivo slider image nivo slider image nivo slider image nivo slider image nivo slider image nivo slider image nivo slider image nivo slider image nivo slider image nivo slider image nivo slider image

Chromite --- Chrome Ore --- Chromitesand --- Chromite concentrate --- (page in English only)

 

Chromite

Chromite is the commercial name for iron chromium oxide (FeCr2O4), a mineral containing chromium (a transition metal with multiple oxidation states) and iron oxide. In its purest form, chromite comprises chromium (Cr2O3) at 68% and iron oxide (FeO) at 32%. Chromite occurs exclusively in ultramafic rocks such as dunite, peridotite, pyroxenite and serpentinite. High purity deposits are rare owing to replacement by certain elements. In nature, ferrous iron tends to be partially replaced by magnesium, while chromium may be partially replaced by aluminium or ferric iron.

As a result, a range of chromite grades can occur in any deposit, with each grade suitable for a specific application. Grades produced include metallurgical and non-metallurgical applications:  

          –    foundry grade                    Cr2O3   min.  46%,    sizing  AFS 40-50,  45-55,  50-60 (Chromerzsand)           –    refractory grade                Cr2O3   min.  46%,    sizing typ.  98% < 2 mm –    chemical grade                  Cr2O3   typ.  45 – 47%,    sizing typ.  98 % < 1 mm            –    metallurgical grade          Cr2O3   typ.  30 – 45%,    various sizings

World chromite reserves are estimated to total around 7.6 bn tonnes, with the majority of this located in South Africa. The country is by far the single largest holder of the world’s chromite reserves, accounting for 5.5 bn tonnes (72%) – much of which is held in the Bushveld Igneous Complex. Other important sources of chromite include Zimbabwe (with 12% of the world’s reserves), Kazakhstan (4%), Finland (2%), India (1%) and smaller amounts in Turkey and elsewhere. World production of chrome ore totals about 25 million tonnes per annum and is dominated by South Africa (41%), followed by India (16%), Kazakhstan (15%), Turkey (8%), and Oman (3.5%).

Ferrochrome markets typically consume 93% of the chrome ores produced; the metallurgical grades. Chemical and foundry grade chromites consume around 3% each of total chromite production, with about 1% used in refractories.

Are you interested in our chromites? Please feel free to  CONTACT  us! Product DataSheets and Material Safety DataSheet will be sent on request.