C - Chemistry – Metallurgy – 03 – C
Patent
C - Chemistry, Metallurgy
03
C
261/16
C03C 1/02 (2006.01)
Patent
CA 1054164
PRODUCING PRE-TREATED GLASS BATCH MATERIALS ABSTRACT OF THE DISCLOSURE A process for producing pre-treated glass batch materials in pelletized form is disclosed. The process involves obtaining commercially available sand, sodium carbonate (soda ash), sodium sulfate (salt cake) and other minor glass making ingredients. A dolomite having an average (statistical mean) particle size less than 16 microns, preferably less than 7 microns, and a limestone having an average (statistical mean) particle size less than 250 microns is also obtained. All of the dry materials are mixed in proper proportions so that a desired final glass composition may be obtained when these materials are treated with a caustic soda solution. The dry mixture is con- tinuously fed to a pelletizing device at which a pre- determined amount of caustic soda is continuously added thereto. The dry mixture is pelletized by wetting it with the caustic soda on the pelletizing device. A pelletized product is continuously removed from the pelletizing device and this product is dried to produce glass batch materials in which the reaction of the caustic soda with both the dolomite and the limestone has given the product sufficient strength to withstand crushing and abrading forces normally encountered in handling operations.
244836
Janson Philip D.
Kuna Kenneth J.
Neilans Nellie E.
Sowman James P.
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