| 摘要 |
<p>In a process for melting glass in a furnace adapted therefore, said furnace having an upstream melting zone and a downstream fining zone, wherein the molten glass travels along a path from the melting zone to the fining zone comprising:
(a) introducing solid glass batch into the melting zone;(b) heating the batch whereby an upper layer of batch and a lower layer of molten galss are formed in the melting zone;(c) providing sufficient heat to maintain the molten glass in the molten state through the fining zone;(d) providing at least a part of the process heat through at least one oxygen/fuel flame located at each side of the path of the molten glass, said flames being fueled by an oxygen containing gas/fuel mixture wherein the oxygen containing gas contains about 50 percent to about 100 percent oxygen by vulume; and(e) withdrawing the molten glass from the fining zone, the improvement comprising:(i) providing the oxygen/fuel flames at low momentum;(ii) directing thetip of each flame atthe interface of the solid glass batch and the molten glass; and(iii) covering substantially all of the width of the furnace with the flames in a narrow band about perpendicular to the path of the molten glass, said narrow band straddling the point at which the tips of the flames meet the interface in step (ii).</p> |
