METHOD FOR PRODUCTION OF FESI

Method for production of ferrosilicone in an electric reduction furnace, by using iron-containing, quartz-containing and carbonaceous materials. The reduction furnace is, in addition to Si-containing materials, supplied with agglomerates, which replace in at least a portion of the iron-containing material. The agglomerate comprises a substantially homogenous mixture of a carbonaceous material and a reducible iron compound, iron, whereby the weight ratio between carbon and iron in the reduced agglomerates is in the range from 0.2:1 to 1.5:1 based upon reduced agglomerate. The agglomerate effects an absorption of SiO gas present in the furnace which normally is lost through the off gases from the furnace, thus increasing Si yield and decreasing energy consumption.