Production of high Carbon Ferro-Chrome and Silica-Chrome from raw materials supplied by Messrs, Ferro alloys Corporation Limited, Garividi

Abstract

The feasibility of using chromite ore from Orissa Mineral Development Corporation, coke from Giridih and wood charcoal for the production of high carbon ferro-chrome was comprehensively investigated in the 500 KVA Submerged-Arc furnace Pilot Plant of the National Metallurgical Laboratory. Operating conditions were standardized to produce high carbon ferro-chrome containing 60-65% chromium, 3-6% silicon and 5-7% carbon. It was observed that wood charcoal could successfully be used for the production of high carbon ferro-chrome. Similarly, silicon-chrome containing 40% silicon was produced by the slag less method developed at National Metallurgical Laboratory. It was observed that coke from Giridih could be used as a carbonaceous reducer with partial replacement by wood charcoal in the production of silico-chrome containing Si 40% and C 0.05%.