NO128619B

A method for controlling the amount of silicon contained as an impurity in high carbon ferrochromium which, when there is smelted high carbon ferrochromium by reducing raw chromium ores in a submerged arc furnace, consists in mixing fine chromium ores being used with proper amounts of other crushed raw materials rich in magnesium oxide or aluminum oxide fully to match the weight ratio of the magnesium oxide to the aluminum oxide both contained as impurities in said raw chromium ores, whereby the proportion of silicon contained in the alloyed product can be controlled as desired by carrying out said mixing to such extent that the weight ratio of the magnesium oxide to the aluminum oxide present in the mixture attains a value indicated by any point on the correlation curve of the attached chart.