Abstract 1,024,595. Glass masking furnaces. UNION CARBIDE CORPORATION. April 27, 1964 [April 30, 1963], No. 17383/64. Heading F4B. Glass raw materials are rapidly melted at the charge end 22 of a glass furnace by directing a flame, which may come from an electric arc torch, directly at the batch. The temperature of the flame is at least 3500‹ F. and is capable of transferring between 25,000 and 415,000 B.Th.U./hour per sq. ft. of furnace melt area to the batch. The burners, in the walls or roof of the furnace, are directed downwardly at an angle of 45 degrees or less to the vertical. Additional burners may be provided at the refining zone 23 of the furnace. The furnace, which has a deeper central zone, is cooled by a water jacket 17. The batch may be fed to the furnace through a central passage 25 of a water-cooled burner fired by natural gas and oxygen, Fig. 5. The raw materials are fed through the burner by additional oxygen.
A PROCESS FOR THE PRODUCTION OF REFINED GLASS FROM RAW GLASSMAKING MATERIALS IN A GLASSMAKING FURNACE HAVING A FEED END ZONE AND A DISCHARGE END ZONE, WHICH PROCESS COMPRISES CHARGING RAW GLASSMAKING MATERIALS INTO THE FEED END ZONE, DIRECTING AT AND IMPINGING UPON THE EXPOSED EXTERIOR SURFACE PORTION OF THE RAW GLASSMAKING MATERIALS AT LEAST ONE HEATED EFFLUENT HAVING A MINIMUM TEMPERATURE OF 3500*F. AND A SUFFICIENT HEAT CONTENT SO AS TO PRODUCE A PEELING TYPE MELTING OF SAID RAW MATERIALS AND TRANSFER THERETO BETWEEN 25,000 AND 415,000 B.T.U/HOUR PER SQUARE FOOT OF FURNACE AREA WHEREBY SAID MATERIALS WLL BE COMPLETELY MELTED AND REFINED; AND WITHDRAWING THE REFINED GLASS FROM THE DISCHARGE END ZONE WHILE CHARGING RAW GLASSMAKING MATERIALS INTO THE FEED END ZONE AT RATES SUFFICIENT TO PRODUCE AND MAINTAIN THE GLASS BEING WITHDRAWN FROM THE DISCHARGE END ZONE AT A TEMPERATURE OF AT LEAST 2600*F.
Claim 2
Dependent Claim
147 words
A PROCESS FOR THE PRODUCTION OF REFINED GLASS FROM RAW GLASSMAKING MATERIALS IN A GLASSMAKING FURNACE HAVING A FEED END ZONE AND A DISCHARGE END ZONE, WHICH PROCESS COMPRISES CHARGING RAW GLASSMAKING MATERIALS INTO THE FEED END ZONE, DIRECTING AT AND IMPINGING UPON THE EXPOSED EXTERIOR SURFACE PORTION OF THE RAW GLASSMAKING MATERIALS AT LEAST ONE HEATED EFFLUENT HAVING A MINIMUM TEMPERATURE OF 3500*F. AND A SUFFICIENT HEAT CONTENT SO AS TO PRODUCE A PEELING TYPE MELTING OF SAID RAW MATERIALS AND TRANSFER THERETO BETWEEN 25,000 AND 415,000 B.T.U/HOUR PER SQUARE FOOT OF FURNACE AREA WHEREBY SAID MATERIALS WLL BE COMPLETELY MELTED AND REFINED; AND WITHDRAWING THE REFINED GLASS FROM THE DISCHARGE END ZONE WHILE CHARGING RAW GLASSMAKING MATERIALS INTO THE FEED END ZONE AT RATES SUFFICIENT TO PRODUCE AND MAINTAIN THE GLASS BEING WITHDRAWN FROM THE DISCHARGE END ZONE AT A TEMPERATURE OF AT LEAST 2600*F.