NOVELTY - The burner has an oxidizing gas channel provided with a proximal gas opening and a distal gas opening. A combustion chamber includes combustion chamber walls. First outlet nozzle is in connection with a supersonic gas channel. Second outlet nozzle is in connection with a distal fuel opening of a hybrid fuel source channel. A third outlet nozzle is in connection with the distal gas opening of the oxidizing gas channel. A flame discharge opening is formed at distal to the third outlet nozzle.    USE - Hybrid burner for use in standard or modified electric arc furnaces for heating a source metal material i.e. iron, and standard fuels e.g. solid carbon-containing fuels such as coal, and hydrocarbon fuel such as natural gas, propane, methane, coke oven gas, blast furnace gas, gasified coal, gaseous products of biowaste, gaseous biowaste, carbon monoxide and hydrogen (all claimed).    ADVANTAGE - The burner allows a foaming slag to rise and cover electric arcs, thus permitting the use of a high tap setting without increasing the thermal load on the furnace walls. The burner switches to a solid carbonaceous fuel when the opening is formed, so that solid carbonaceous fuel can be combusted or in conjunction with a standard fuel source so as to prevent undesired particulate matter from directly entering the melted source material, thus saving cost of the burner.    DETAILED DESCRIPTION - The burner comprises fluid fuel selected from the group consisting of natural gas, propane, methane, hydrocarbons, coke oven gas, blast furnace gas, gasified coal, gaseous products of biowaste, gaseous biowaste, carbon monoxide and hydrogen. An INDEPENDENT CLAIM is also included for a method for heating a source metal material.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of structure illustrating an iron processing using a hybrid burner.    Electric arc furnaces (200)    Oxygen-fuel combustion (204)    Supersonic oxygen (206)    Hybrid burner (207)    Carbon (218)