Process for vitrifying asbestos containing waste, infectious waste, toxic materials and radioactive waste
June 29, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2880456 3293017 3869232 Preparing alkali metal silicate glass with bubbles Vertical glassmaking furnace and method of operation Method of melting a raw bath and a glass furnace for performing the method Method of and apparatus for melting of glass Grooving glass batch Method of and furnace for batch charging into a glass melting furnace Method for strengthening vitreous products and composition boards InventorsAssigneeApplicationNo. 906306 filed on 06/29/1992US Classes:65/21.1, Self-supporting particle making (e.g., bead, ball, granule, etc.)65/21.2, By molten glass comminuting65/21.5, With mechanical shaping or subdividing65/103, Utilizing heat shield or heat-sink65/127, With gob shaping or treating subsequent to discharge through orifice65/133, Severing of molten glass stream65/135.7, With submerged electrodes264/5FORMATION OF SOLID PARTICULATE MATERIAL DIRECTLY FROM MOLTEN OR LIQUID MASS (E.G., LIQUID COMMINUTING)ExaminersPrimary: Jones, W. GaryAttorney, Agent or FirmForeign Patent References
International ClassesC03B 019/10C03B 017/00 C03B 005/16 AbstractMaterial, such as, for example, sealed double bags of asbestos containing waste or ash from infectious waste or toxic material or radioactive waste, is transferred into a glass melt of a furnace. Gas bubbles released into the melt form a gas curtain which causes enhanced mixing of the material to accelerate the dissolution of the components of the added material. The presence of the gas bubbles reduces the cross-section of the molten glass through which current passes, which in turn increases the electrical resistance of the glass melt and therefore increases power generation of the melt or power density at constant current. A highly oxidizing hot region is produced under the location where the material is introduced into the furnace. Drawn off glass is shaped and quenched into at least two sizes of approximate spheres. The spheres are cooled sufficiently fast to be thermally tempered and have a surface compressive strength level above 5000 psi.Field of SearchInlet conduit extending downwardly inside receptacleHaving connection for external suction or pressure source Upstream of suction source Self-supporting particle making (e.g., bead, ball, granule, etc.) By molten glass comminuting Spheroidizing or rounding of solid glass particles With mechanical shaping or subdividing Slag, utilization Utilizing heat shield or heat-sink Charging of molten glass into mold cavity With gob shaping or treating subsequent to discharge through orifice PARTICULATE BEAD OR BALL MAKING APPARATUS (E.G., PIN HEADING) Repairing or cleaning of apparatus; or batch dust prevention or control With movable work transfer means between orbits Utilizing diverse solid particles FORMATION OF SOLID PARTICULATE MATERIAL DIRECTLY FROM MOLTEN OR LIQUID MASS (E.G., LIQUID COMMINUTING) Utilizing centrifugal force or rotating forming zone | |
