| 摘要 |
A furnace for melting, refining or processing metals and for the reduction of ores, having a refractory or graphitic bottom and side-walls and having a roof, and having a feed-entrance for introducing the unmelted metal feed-material into the furance from above the level of the molten metal, and said furnace having a molten-metal exit, and internal-combustion burners extending downwardly through the roof of the furnace with their discharge ends substantially below the melt-level and with their other ends outside the furnace. Each of the burners has a refractory or metallic combustion chamber and a metallic liquid coolant-jacket surrounding said combustion chamber, with the coolant-inlet and the coolant-outlet of the jacket being near the other end of the burner, outside the furnace. The burner has a conduit for a fuel supply and a conduit for a combustion-supporting-gas supply, with the respective inlets thereof at the outside end of the burner and with the discharge terminals thereof disposed within said combustion-chamber in operative juxtaposition to each other, and ignition means in operative juxtaposition to said terminals of the fuel conduit and of the combustion-supporting-gas conduit, respectively.
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