Process for Up-grading Waste Siliceous Aqueous Glass Grinding Material

1,188,205. Upgraded glass grinding waste. H. D. FERER, and H. T. STIRLING. 7 Aug., 1967, No. 36228/67. Heading C1M. Waste siliceous aqueous glass grinding effluent is upgraded to produce a valuable material having a specific gravity of not more than 2À5, by a process involving the steps of removing...

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Hauptverfasser:	HARVEY DEAN FERER, HAROLD TAMPLIN STIRLING
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY DYES GLASS INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OFSOLID INORGANIC COMPOUNDS INORGANIC CHEMISTRY JOINING GLASS TO GLASS OR OTHER MATERIALS METALLURGY MINERAL OR SLAG WOOL MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS POLISHES PREPARATION OF CARBON BLACK SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES
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Zusammenfassung:	1,188,205. Upgraded glass grinding waste. H. D. FERER, and H. T. STIRLING. 7 Aug., 1967, No. 36228/67. Heading C1M. Waste siliceous aqueous glass grinding effluent is upgraded to produce a valuable material having a specific gravity of not more than 2À5, by a process involving the steps of removing magnetic material and fines from the waste material, adjusting the moisture content of the waste material to 10-23%, then pelletizing the material, drying the resulting pellets at a temperature between 200‹ and 600‹ F. for a period of 2 to 7 minutes, preheating the pellets to a temperature between 1000‹ and 1500‹ F., heating the pellets at a temperature between 2200‹ and 2800‹ F. for between 3 and 10 minutes, cooling the pellets, and grinding them to a powder having a predetermined particle size, e.g. in the range 80-15 microns. The product can be used as a paint filler, as a replacement for SiO 2 in glass manufacture, as an abrasive in cleansing compositions, as a sized pellet in blast furnaces, and for light weight aggregates.