CHROMITE
CHROMITE

Chromium plays an essential but hidden role in human life. In many ways, chromium contributes to a clean, efficient, and healthy life style. Many consumer products use chromium and many others are made possible by industrial use of chromium.

Industry uses chromium in three forms, ferrochromium, chromium chemicals, and chromite-containing refractories to make industrial products, which, in turn may end up in consumer products. As used here, industrial products are those consumed by industry; consumer products, by the general public.

 
Although chromite mining in India started around 1903 there was no ferro-chrome production in the country till 1968. Hence most of the chromite ore was exported. India exported about 3.84 million tones between 1903 to 1980. The current production rate of chromite ore in the country is between 0.7to 0.9million tonnes per annum. In 1986, India attained a production of 90,000 tonnes of FeCr/charge chrome. Prior to implementation of the OMCAL, and FACOR units, the production of FeCr was only about 20,000 TPA. The situation has changed dramatically due to the commencement of
production in the export oriented units. Estimated reserve of chromite ore in the country is about 140million tones, and about 127 million tones are available in the Sukinda valley of Orissa.

Conversion of low and medium grades of Chrome Ore into Chrome Concentrate with high Cr2O3 content ranging between 50-56% with correspondingly high Cr/Fe ratio between 2.48/1 - 3.5/1. Through the process called beneficiation. Depending upon the grades of Chrome Ore the Chromium percentage varies in between 48% to 56%.
Types of Chrome ore
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Chrome Ore Specification