Production of high carbon ferromanganese using low-temperature carbonization coke Katkona Colliers of Madhya Pradesh

Abstract

The feasibility of using low-temperature carbonized coke of Katkona seam no.1 and no.3 of Madhya Pradesh in the production of high-carbon ferromanganese was studied in the 500 kVA submerged Arc electric furnace. Initially, Durgapur hard coke was used as a reducing agent in establishing the basic parameter in the production of high carbon ferro-manganese and subsequently, the performance was assessed by replacing Durgapur coke with 33%, 66%, and 100% L.T.C. seam no.3 and 100% seam no.1 respectively. With L.T.C. coke of both seams, the operation of the furnace was found relatively good. Using L.T.C. seam no.3, ferromanganese containing 75.86-76.16% Mn, 0.2%-0.49% Si,6.8-7.2% C was produced with a power consumption of 2733 KWHr per tonne of ferromanganese.