Apparatus for utilizing waste heat of gas generated from an electric smelting furnace

Claim 1

IN AN ELECTRIC FURNACE FOR CONVERTING A RAW MANGANESE ORE INTO A FERRO-MANGANESE PRODUCT, AS WELL AS TO PRODUCE FERROSILICON FERROCHROM, PIG IRON, CARBIDE AND OTHER FERRO MATERIALS, WITH ANM INNER WALL AT LEAST PARTLY CYLINDRICAL, INCLUDING A LID AND ELONGATED CYLINDRICAL ELECTRODES FOR HEATING THE RAW ORE INTO SLAG, THE IMPROVEMENT THEREIN COMPRISING, AN ELECTRODE HOLDER BELOW SAID LID FOR HOLDING SAID ELECTRODE, SPLIT INTO SEVERAL RADIAL HOLLOW SECTIONS FOR CIRCULATING COOLING WATER AROUND THE ELECTRODE; A HOLLOW PROTECTIVE CYLINDER AROUND SAID ELECTRODE HOLDER AND ELECTRODE, SAID HOLLOW PROTECTIVE CYLINDER EXTENDING FROM ABOVE THE LID TO BELOW THE LID, WITH MEANS ABOVE SAID LID THROUGH WHICH AIR IS FED, WHICH AIR IS THEN DIRECTED TO THE INNER WALL OF THE FURNACE THROUGH A NUMBER OF SMALL PERFORATIONS AT THE LOWER END OF SAID PROTECTIVE CYLINDER, AND, A RING BELOW SAID LID INCLUDING A HOLLOW PASSAGE FOR PASSING COOLING FLUID AROUND SAID ELECTRODE WITH A HANGING ROD CONNECTED TO SAID RING FROM ABOVE SAID LID TO CLAMP THE RING TO THE ELECTRODE AND ADJUST ITS RELATIVE POSITION IN THE SLAG.