Directing Batch Feed To Float On Molten Glass Surface Patents (Class 65/136.2)
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Patent number: 9963372Abstract: Glass furnace regenerators having opposed pairs of side and end walls formed of refractory blocks, a crown arch assembly forming an arched roof of the regenerator, and a rider arch assembly forming an interior floor of the regenerator are provided, wherein at least one of the crown arch assembly and rider arch assembly is formed of adjacently positioned one-piece monolithic pre-cast structures of refractory materials.Type: GrantFiled: November 12, 2015Date of Patent: May 8, 2018Assignee: FOSBEL, INC.Inventors: Alan E. Bowser, Jr., Robert D. Chambers, Lou Carolla, Michael P. Smith
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Patent number: 8707738Abstract: A glass-melting furnace, which suppresses the effect of exhaust gas on molten glass quality, a process for producing molten glass, and a process and apparatus for producing glass products. The glass-melting furnace containing: a raw glass material particle feed portion disposed downwardly at a furnace wall portion in an upper portion of the glass-melting furnace; a heating unit provided under the feed portion, which forms a gas phase portion for converting raw glass material particles into liquid glass particles; a flue inlet disposed on the upstream side of the gas phase portion in a flow direction of the molten glass liquid; a furnace-bottom portion, which accumulates the liquid glass particles that produce the molten glass liquid; and a discharge portion, which discharges the molten glass liquid.Type: GrantFiled: February 15, 2012Date of Patent: April 29, 2014Assignee: Asahi Glass Company, LimitedInventors: Osamu Sakamoto, Chikao Tanaka, Seiji Miyazaki, Satoru Ohkawa
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Patent number: 8707739Abstract: Channel apparatus for use with submerged combustion systems and methods of use to produce glass. One channel apparatus includes a flow channel defined by a floor, a roof, and a wall structure connecting the floor and roof, the flow channel divided into sections by a series of skimmers. Channel apparatus include both high and low momentum combustion burners, with one or more high momentum combustion burners positioned immediately upstream of each skimmer in either the roof or sidewall structure, or both, and one or more low momentum combustion burners positioned immediately downstream of each skimmer in either the roof, the sidewall structure, or both, and positioned to transfer heat to the molten mass of glass without substantial interference from foamed material. Certain embodiments include increased height of glass-contact refractory, in particular immediately upstream of the skimmers.Type: GrantFiled: June 11, 2012Date of Patent: April 29, 2014Assignee: Johns ManvilleInventors: Aaron Morgan Huber, Marlon Keith Martin, John Euford Mobley
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Patent number: 8650914Abstract: A method for recycling glass mat waste, wound rovings, and other products includes providing a source of glass mat, or a plurality of rovings, for example on a roll, and routing the glass mat or rovings into a submerged combustion melter. An unwind system and a pair of powered nip rolls, powered conveyors, or other arrangement may work in combination to provide a substantially consistent rate of material into the melter. The melter may operate under less than atmospheric pressure to avoid fumes escaping the melter. A slot in the melter allows ingress of the glass mat or rovings into the melter, and a glass mat former such as a folder may be used to ensure that the mat fits through the slot. Alternatively, the glass mat may be cut by a slitter prior to entering the slot.Type: GrantFiled: September 23, 2010Date of Patent: February 18, 2014Assignee: Johns ManvilleInventor: Mark William Charbonneau
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Patent number: 8578738Abstract: The invention concerns a method for melting a composition of raw materials including introducing the composition in an oven to form a layer (2) at the surface of the molten pool (4). An oxycombustion burner (10) is arranged above the pool and directed towards the composition layer (2) to produce a melting front (3). Parameters of the burner are adjusted to produce a large covering flame (12) causing an essentially radiation-based thermal transfer. Additionally, a plane containing a longitudinal section of the flame (Z-Z) and a horizontal direction perpendicular to the axis of the oven (X-X) intersects the melting front (3) at a height (h) included ranging between one third and half of the thickness of the composition (e). Such a method provides for a stable operation of the oven and is particularly adapted to a large-capacity oven.Type: GrantFiled: September 4, 2012Date of Patent: November 12, 2013Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventor: Remi Pierre Tsiava
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Patent number: 8573007Abstract: The present invention provides a process for producing a molten glass which can produce a molten glass having a good quality, a glass-melting furnace, a process for producing glass products and an apparatus for producing glass products. While an oxygen combustion burner 20 is rotated by a motor 38, glass raw material particles (not shown) are dropped into a high-temperature gas phase atmosphere produced by a flame F of the oxygen combustion burner 20, to be changed into liquid glass particles. By rotation of an outlet (nozzle) of the oxygen combustion burner 20, the falling position of the liquid glass particles 26, changes with time. Accordingly, generation of bubbles caused by continuous fall of the liquid glass particles in a particular position on a molten glass liquid surface is prevented. Accordingly, it is possible to produce a molten glass having a good quality with few bubbles.Type: GrantFiled: February 10, 2012Date of Patent: November 5, 2013Assignee: Asahi Glass Company, LimitedInventors: Osamu Sakamoto, Chikao Tanaka, Seiji Miyazaki, Satoru Ohkawa, Takahiro Murakami
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Patent number: 8573006Abstract: A coolant box for a glass batch charger that includes a base, a front wall, a rear wall, a coolant labyrinth extending from the base between the front and rear walls, and including a plurality of curvate baffle walls establishing a plurality of curvate coolant channels.Type: GrantFiled: January 9, 2012Date of Patent: November 5, 2013Assignee: Owens-Brockway Glass Container Inc.Inventors: Kenneth D. Macleod, David L. Lewis, Robert Ponzi
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Publication number: 20130167587Abstract: A feeding device for introducing particulate feedstock into glass melting installations, comprising pushing conveyors supplied by storage containers via guiding channels and directed onto the melt surface, and comprising a slide for advancing the feedstock on the melt surface. To largely avoid asymmetric material and temperature distribution and movements transverse to a feedstock transporting direction, and exposure of the installation mineral construction materials to changing thermal loads, a) at least three pushing conveyors are arranged alongside one another and, in the region of the guiding channels, are arranged so closely alongside one another that they can be supplied by a common distributing device, and are separated from one another in the intermediate region between two guiding channels by a dividing edge, and b) a linkage for the drive of a slide that can be introduced into the glass melt is led through the spacing between each two guiding channels.Type: ApplicationFiled: August 31, 2011Publication date: July 4, 2013Inventors: Matthais Lindig, Erich Waltert
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Patent number: 8256245Abstract: The invention concerns a method for melting a composition of raw materials including introducing the composition in an oven to form a layer (2) at the surface of the molten pool (4). An oxycombustion burner (10) is arranged above the pool and directed towards the composition layer (2) to produce a melting front (3). Parameters of the burner are adjusted to produce a large covering flame (12) causing an essentially radiation-based thermal transfer. Additionally, a plane containing a longitudinal section of the flame (Z-Z) and a horizontal direction perpendicular to the axis of the oven (X-X) intersects the melting front (3) at a height (h) included ranging between one third and half of the thickness of the composition (e). Such a method provides for a stable operation of the oven and is particularly adapted to a large-capacity oven.Type: GrantFiled: November 21, 2005Date of Patent: September 4, 2012Assignee: L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges ClaudeInventor: Rémi Pierre Tsiava
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Patent number: 8201418Abstract: The invention concerns a method for preparing glass from raw materials in powder form in a furnace comprising three side walls, a roof, an upstream pinion and at least one air injector associated with a gas or liquid fuel injector, at least one of said injectors being arranged in said side walls, in said roof or in said upstream pinion. Said method includes the following steps: injecting air and gas or liquid fuel through said injectors, at least one flame being generated immediately proximate the zone where said raw materials in powder form cover the glass solution.Type: GrantFiled: July 12, 2006Date of Patent: June 19, 2012Assignees: Saint-Gobain Isover, Saint-Gobain Glass FranceInventor: Jean-Gerard Leconte
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Patent number: 8196432Abstract: The invention relates to a furnace for the continuous melting of a composition comprising silica, the said furnace comprising at least two tanks in series, said tanks each comprising at least one burner submerged in the melt. The invention also relates to the process for manufacturing compositions comprising silica using the furnace, the silica and the fluxing agent for the silica being introduced into the first tank. The invention makes it possible to produce glass color frits, tile frits and enamel with a high productivity, low temperatures and short transition times.Type: GrantFiled: July 30, 2003Date of Patent: June 12, 2012Assignee: Saint-Gobain Glass FranceInventors: Remi Jacques, Pierre Jeanvoine, Biagio Palmieri
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Patent number: 7926301Abstract: A method of feeding a pulverulent batch material into a furnace in the manufacture of glass. The pulverulent batch material is fed from a first bulk batch feeder at a first batch feed rate, and from a second trim batch feeder at a second trim batch feed rate. The trim batch feed rate is equal to or less than 10% of the total batch feed rate. The use of trim electrodes and trim burners is also disclosed.Type: GrantFiled: August 16, 2007Date of Patent: April 19, 2011Assignee: Corning IncorporatedInventor: William Weston Johnson
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Patent number: 6722161Abstract: A method for melting glass forming batch material includes charging the glass forming batch material to a glass melting apparatus; impinging a flame proximate to the surface of the batch materials to form a glass melt from the batch material; and bubbling the glass melt in proximity to the impinging flame with a fluid, advantageously producing a shearing action sufficient to enhance the solution rate of the glass forming batch material relative to the same system without bubbling, but without splashing glass and without significant production of seeds or blisters in the glass melt. Melting of the glass forming batch material with bubbling proceeds more quickly, and/or at lower temperatures than occurs in a comparable conventional glass melting furnace.Type: GrantFiled: April 15, 2002Date of Patent: April 20, 2004Assignee: The BOC Group, Inc.Inventor: John R. LeBlanc
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Patent number: 6622524Abstract: Foodstuffs filled in glass containers undergo a change in taste under the influence of light. In order to combat such changes in taste the glass according to the invention contains vanadium pentoxide. Since pure vanadium pentoxide is relative expensive, the invention proposes a way of using a mixture of vanadium pentoxide and phosphorous oxide which is available as an economical aggregate. This type of glass is preferably used to accomodate foodstuffs. The glass containing vanadium pentoxide and phosphorous oxide is particularly suited for bottles to hold beer. Such bottles exhibit particularly effective light protection properties when they are made of so-called white glass.Type: GrantFiled: July 20, 2001Date of Patent: September 23, 2003Assignee: Nienburger Glas GmbHInventors: Hans-Jürgen Barklage-Hilgefort, Wolfgang Cieleback
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Patent number: 6558308Abstract: The Advanced Vitrification System (AVS) Melting Process is a process for vitrification of waste in a disposable canister. In the process, waste is dropped into the disposable canister from the top. While the waste is being dropped into the disposable canister, radiant energy is added to the space above the waste in the canister, such that the temperature of the gaseous atmosphere above the waste is higher than the melting point of the waste. Since only the space above the waste in the canister is heated, the temperature of the melt decreases with increasing depth of the waste in the canister. The decreasing temperature permits a small surface melt volume to be maintained and solidified product to form with increasing depth. The process continues until the disposable canister is filled, then all heating is stopped and the disposable canister allowed to cool to ambient temperature.Type: GrantFiled: April 25, 2002Date of Patent: May 6, 2003Assignee: Radioactive Isolation Consortium, LLCInventors: James R. Powell, Morris Reich
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Patent number: 6519973Abstract: A process and furnace for melting glass is set forth wherein the majority of the combustion energy over the melting zone of the furnace is provided by oxy-fuel combustion while a majority of the combustion energy over the fining zone of the furnace is provided by air-fuel combustion. In many cases, it will be preferable to provide greater than 70% and up to and including 100% of the combustion energy over the melting zone by oxy-fuel combustion and greater than 70% and up to and including 100% of the combustion energy over the fining zone by air-fuel combustion. By proper tailoring of the combustion space atmosphere through oxy-fuel and air-fuel firing, the present invention can result in an improvement in glass productivity and quality. The present invention can be applied in the construction of a new furnace or can be applied to existing air-fuel furnaces.Type: GrantFiled: March 23, 2000Date of Patent: February 18, 2003Assignee: Air Products and Chemicals, Inc.Inventors: Bryan Clair Hoke, Jr., Kevin Alan Lievre, Aleksandar Georgi Slavejkov, Julian Leonard Inskip, Robert Dean Marchiando, Robert Michael Eng
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Patent number: 6485404Abstract: A process of making vitrified waste in a crucible and inserting the crucible and vitrified waste into an outer container after vitrification. The outer container is then sealed.Type: GrantFiled: April 4, 2002Date of Patent: November 26, 2002Assignee: Radioactive Isolation Consortium, LLCInventors: James R. Powell, Morris Reich
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Patent number: 6357264Abstract: This apparatus is a furnace for heating molten material which employs oxygen-fuel burner assemblies. Preferably, the assemblies are submerged in the molten material. They are water cooled top down units with burner nozzles being off-set from the supply column. The apparatus utilizes one or more burners for each top down supply column. The supply column and attached burners can be rotated or moved in a manner to avoid the open chimney effect seen with fixed air-fuel burners of the prior art. These burners with an off-set nozzle like the letter L are rotated at high speed or oscillated to distribute the combustion in the form of gas bubbles or a gas curtain. In another embodiment, the oxy-fuel burners are not submerged. The nozzles are aimed at unmelted batch or the upper surface of the molten material for controlled splashing.Type: GrantFiled: May 30, 2000Date of Patent: March 19, 2002Inventor: Raymond S. Richards
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Patent number: 6237369Abstract: Briefly, according to the present invention there is provided a refractory lined glass melter for producing refined glass from raw glass-forming material using at least one oxygen-fuel burner recessed within a burner block mounted in the roof of the furnace and a process of using the burner. The velocities of the gaseous fuel and of the oxygen from the oxygen-fuel burner are controlled such that the velocities of the gaseous fuel and the oxygen are substantially equivalent to provide a generally laminar gaseous fuel and oxygen flow to combust proximate a top surface of the raw glass-forming material and produce a flame which impinges the surface of the raw glass-forming material and which has a middle portion of a columnar shape.Type: GrantFiled: December 17, 1997Date of Patent: May 29, 2001Assignees: Owens Corning Fiberglas Technology, Inc., The BOC Group, Inc.Inventors: John R. LeBlanc, Rifat M. Khalil Alchalabi, David J. Baker, Harry P. Adams, James K. Hayward
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Patent number: 6178777Abstract: An electric open-top melter for use in the manufacture of mineral fibers, such as fiberglass, is provided with a side-discharge outlet. The side-discharge outlet allows the melter, conditioner/refiner, and forehearth to all be located on substantially the same level, thereby allowing molten glass to flow from the side of the melter, through the conditioning zone, and into the forehearth from which spinners produce glass fibers or the like. Isolation members are provided in the conditioning or refining area so as to enable molten glass therein to be isolated from the melter and forehearth when the molten glass level is lowered below the tops the isolation members.Type: GrantFiled: September 30, 1999Date of Patent: January 30, 2001Assignee: Guardian Fiberglass, Inc.Inventor: Vaughn Charles Chenoweth