Study on production of low carbon ferrochrome from chromite concentrate

Agarwal, Sanjay and Pal, J and Ghosh, Dinabandhu (2018) Study on production of low carbon ferrochrome from chromite concentrate. In: Manganese/Chrome Ores & Ferro-Alloy Summit, 15-16th February 2018, Visakhapatnam, India .

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Low carbon ferro chrome is used in the manufacturing of stainless steel and in many grades of alloy steels where % of chromium has to be adjusted without affecting the carbon content of alloy. It also found its application in welding electrodes and stick electrodes. Ferro-chrome is normally produced from lump chromite ores in the electric arc furnace. Majority of the lump ore is very lean (~30% Cr) in nature. Production of low carbon ferro-chrome requires use of high-grade chromite ores; but these are fragile and tend to form fines during handling. In the experiments, chromite concentrate produced after mineral beneficiation with fluxes was smelted 50 KVA electric arc furnace at 1600 – 1800 oC to produce low carbon ferro-chrome. Low carbon ferro-chrome of composition 63-65%Cr, 34-35% Fe, 0.1-0.3%C, 0.5-1% Si was produced with chromium recovery ~ 85% and metallic yield ~80%.

Item Type:Conference or Workshop Item (Keynote)
Uncontrolled Keywords:Chromite concentrate, Electric arc furnace, reduction smelting, Low carbon ferro-chrome alloy
Divisions:Metal Extraction and Forming
ID Code:7850
Deposited On:31 Jul 2018 13:10
Last Modified:31 Jul 2018 13:10

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