CHROMITE

Chrome 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 chromites 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 chromites mining in India started around 1903 there was no Ferro-chrome production in the country till 1968. Hence most of the chromites ore was exported. India exported about 3.84 million tones in between 1903 to 1980. The current production rate of chromites ore in the country in between 0.7 to 0.9 million tones per annum. In 1986, India attained a production of 90000 tonnes of FeCr/Charge chrome. Prior to implementation of the OMCAL, and FACOR units, the production of FECR was only about 20000 TPA. The situation has changed dramatically due to the commencement of production in the export oriented units. Estimated reserve of chromites ore in the country is about 140 million tones, and about 127 million tones are available in the Sukinda valley of Odisha.
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%.