초록 ▼

Glass batch agglomerates are formed, fed to a vertical bed preheat hopper, dried and preheated with furnace exhaust gases, and then fed to a glass melting furnace. The green pellets may spall if the batch particle size distribution results in a pellet with insufficient pore volume to degas effective

Glass batch agglomerates are formed, fed to a vertical bed preheat hopper, dried and preheated with furnace exhaust gases, and then fed to a glass melting furnace. The green pellets may spall if the batch particle size distribution results in a pellet with insufficient pore volume to degas effectively. By employing clay having a coarse particle size in the glass batch agglomerates, spalling and stack emissions are reduced during drying and preheating.

대표청구항 ▼

In a process for producing glass by charging to a melting furnace and melting therein a batch comprising the steps of agglomerating the batch using a liquid, charging the wet agglomerates onto the upper surface of a vertical bed preheat hopper having a lower discharge end communicating with the furn

In a process for producing glass by charging to a melting furnace and melting therein a batch comprising the steps of agglomerating the batch using a liquid, charging the wet agglomerates onto the upper surface of a vertical bed preheat hopper having a lower discharge end communicating with the furnace, substantially simultaneously (1) withdrawing agglomerates through said lower discharge end for charging to the furnace, (2) moving the remaining agglomerates by gravity downwardly through the bed, (3) passing the hot furnace exhaust gas upwardly through the bed to heat the agglomerates therein, and (4) drying the wet agglomerates on the upper region of the bed with spent exhaust gas which was already passed through the bed, wherein the agglomerated batch contains a sufficient amount of clay having a coarse particle size which results in an agglomerate having insufficient pore volume to induce the drying of step (4) and reduce the agglomerate\s spalling tendencies.