| 摘要 |
Furnace has a melting section into which batch is fed to a glass bath heated by electrodes, a homogenizing section, and a clarifying section therebetween in which fossil fuel burners heat the surface of the bath. The clarifying section is separated from the melting section by a first radiation shielding wall which extends to just above the bottom of the furnace and is interrupted by an opening above the glass for passage of combustion gases from the burners. A second shielding wall extends to above the surface of the bath and below the bottom margin of the opening in the first wall, so that combustion gases flow countercurrently through the incoming batch floating on the bath.
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