METHOD OF PRODUCING MOLTEN METAL IN A SUBMERGED ARC TYPE ELECTRIC FURNACE

摘要

Method of producing molten metal by reduction and melting of raw materials in a submerged arc type electric furnace (10) comprising least one electrode (18), said method generating substantial amounts of slag, so that said electric furnace (10) contains a bath of molten metal (12) covered with a thick layer of molten slag (16) having a mass per unit area of at least lt/m2, characterised in that said thick layer of molten slag is made to foam locally around said at least one electrode (18) so as to create around this electrode (18) a local layer of foaming slag (20) in which the density of the slag is at least 50 per cent lower than in the rest of said electric furnace (10).