METHOD FOR HEATING MOLTEN STEEL IN MOLTEN STEEL VESSEL

摘要

PURPOSE:To uniformly heat molten steel in a molten steel vessel by setting a plasma torch at neighborhood pouring the molten steel in the molten steel vessel and heating the molten steel. CONSTITUTION:The plasma torch 11 is set at neighborhood pouring the molten steel 3 from a ladle 1 in the molten steel vessel 2 to heat the molten steel 3. In this case, at the time of applying the heated plasma gas 12 injected from the plasma torch 11 to the neighborhood flowed, the molten steel 3 near the molten steel surface heated with the plasma gas 12, is stirred and the molten steel temp. in the molten steel vessel (tundish) 2 can be uniformized. By this method, it is unnecessary to forcedly stir by injecting inert gas of argon gas, etc., and the molten steel can be heated at low cost.