| 摘要 |
A furnace for heating material such as metal blocks, rods, ingots and the like, consisting of a furnace tunnel through which the material to be heated is guided the tunnel having a wall including openings throughout its total length with a plurality of burners inserted in the openings having their flames directly distributed to the material, and a plurality of consecutive, sectionally arranged fireproof shells disposed on the walls of said furnace tunnel.
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