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| Number | Title | Issue Date |
| 8099981 | Apparatus for preheating batches of glass cullet An apparatus for preheating a batch (12) of glass cullet which is preferably enriched with raw materials for glass production, comprising a bunker (14) preferably having flow ducts for the passage of warm (off)gas. To discharge the preheated batch of g... | 01/24/2012 |
| 8056366 | Method for preheating glassmaking materials Heat in a stream of combustion products obtained from a glassmelting furnace heated by oxy-fuel combustion is passed to incoming glassmaking materials in a heat exchanger without requiring reduction of the temperature of the stream yet without causing softening of t... | 11/15/2011 |
| 7946131 | Method for producing reactive raw material for manufacture of glass suitable fiberization The subject invention is directed to a method for producing a raw material or materials that can be used by themselves or in combination with other ingredients to make glass of high quality at high efficiencies and short production times. The raw materials are capab... | 05/24/2011 |
| 7937969 | Selective batching for boron-containing glasses A method of forming a glass melt, including measuring predetermined amounts of raw materials to define a glass batch, combining predetermined amounts of sources of silica, calcia and boron from the glass batch to yield a first pre-batch, substantially consolidating ... | 05/10/2011 |
| 6672107 | Quartz glass crucible and process for the production thereof In order to provide a quartz glass crucible distinguished by high purity, high opacity and/or low transmissibility in the IR spectrum, it is proposed on the basis of a known quartz glass crucible of opaque quartz glass with a crucible body symmetrical in ... | 01/06/2004 |
| 6615612 | Electrostatic batch preheater and method of using the same A method and apparatus is taught for preheating of glass batch materials by direct contact with glass furnace exhaust gases. Furnace gases 15 flow through a batch hopper 1 in horizontal tunnels formed by open bottom tubes 6, with a free surface of batch f... | 09/09/2003 |
| 6553787 | Method for manufacturing quartz glass crucible Present invention suppresses undesirable effects of the bubbles trapped in a silica glass crucible on single crystallization during the pulling process under a high-temperature load. When raw material powder is melted in a mold 1, graphite components of e... | 04/29/2003 |
| 6357264 | Apparatus for melting molten material 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 co... | 03/19/2002 |
| 6349570 | In-barrel wetting screw charger A wet batch material charging apparatus having a charger screw housing having a batch material inlet and a batch material outlet, a dry batch material supply device adapted to deliver a dry batch material through the batch material inlet, a rotatable char... | 02/26/2002 |
| 6318127 | Method of glass manufacture involving separate preheating of components Provided herewith is a method for preheating a glass mixture to be fed into a glass furnace. The method comprises separately preheating at least some of the materials which comprise the load, and then subsequently remixing the preheated materials and pass... | 11/20/2001 |
| 6289694 | Method and apparatus for melting glass in U-flame and cross-fired tank furnaces with a reduction of the Nox and Co content of the waste gases During the melting of glass from charging material in furnaces with burners and regenerators for the recovery of waste heat, oxygen and primary fuel are introduced into the area around the flame roots under slightly sub-stoichiometric conditions to cover ... | 09/18/2001 |
| 6279351 | Method and apparatus for making glass and particularly ceramic frits A method for making glass and particularly ceramic frits, comprising the steps of: introducing in a wet grinding unit, after a metering step according to chosen proportions, materials which constitute a mixture to be melted, to produce a slurry; screening... | 08/28/2001 |
| 6009724 | Process for preparing glass and for conditioning the raw materials intended for this glass preparation The invention concerns a process for preparing glass, more specifically glass powder or glass films, together with a process for conditioning the raw materials intended for preparing glass characterized in that raw materials are converted to freely flowin... | 01/04/2000 |
| 5954851 | Method for preheating glass batch A method and apparatus for efficiently preheating glass batch utilizing waste gas from a glass melting furnace is provided. In a method and apparatus for preheating glass batch utilizing hot waste gas discharged from a glass melting furnace before glass b... | 09/21/1999 |
| 5855636 | Method which removes odor and pollutants when preparing cullet for use in an electrostatic bed filter A method for treating cullet before use as a raw material in a glass manufacturing process is disclosed. The method includes providing a bed of cullet; passing hot gases through the bed, the quantity and temperature of gases being sufficient to pyrolyze o... | 01/05/1999 |
| 5807418 | Energy recovery in oxygen-fired glass melting furnaces A method for improving the energy efficiency of oxygen-fired glass melting furnaces wherein heat from hot flue gases from the melting furnace is used to heat all or part of the combustion oxidant and thereafter to preheat at least a portion of the glass f... | 09/15/1998 |
| 5779748 | Method which removes odor and pollutants when preparing cullet for use in an electrostatic bed filter A method and apparatus for treating cullet before use as a raw material in a glass manufacturing process is disclosed. The method includes providing a bed of cullet; passing hot gases through the bed, the quantity and temperature of gases being sufficient... | 07/14/1998 |
| 5741342 | Apparatus and method for preheating raw materials for glass making A method is taught for separately preheating cullet and batch, material use in glass making. This method uses a two stage process for preheating batch in a way that allows water vapor to escape to the atmosphere before the main preheating stage. It supple... | 04/21/1998 |
| 5713977 | Fixed bed filtering preheater process for high temperature process furnaces A glassmelting or particle heating system wherein hot flue gas is radiatively cooled in a gas cooling zone integrated within a preheating vessel and a fixed or non-moving bed of material is formed in a filtering zone of the preheating vessel for traverse ... | 02/03/1998 |
| 5709728 | Method and device for the production of mineral wool by using mineral wool waste as recycled starting material The melting tub for producing the molten mass from a mixture of raw material is associated with an additional melting unit by means of which a recycled molten mass is obtained from mineral wool waste largely corresponding to the molten mass obtained from ... | 01/20/1998 |
| 5655464 | Apparatus for melting glass A furnace for melting vitrifiable materials having a compartment (1) for the melting/refining of the glass and which is provided in its upstream part with at least one opening (12) to be supplied with vitrifiable materials (10) with the aid of a charging ... | 08/12/1997 |
| 5578102 | Method for batch preheating and pollution abatement in glass manufacture A method and apparatus for glass manufacture is described having batch preheating and reduced pollution emission. The apparatus includes two modules containing pelletized glass and/or cullet. One module functions as a pelletized glass preheater, and the o... | 11/26/1996 |
| 5526580 | Method and heat-exchanger for preheating broken glass and glass-batching melt-goods or similar bulk goods using a heating gas As a rule a melt-good consisting of glass fragments and glass batching will be moist and tend to agglomerate and bridge-form when being preheated in a plate heat-exchanger 10 whereby the travel of the melt-good through the plate heat-exchanger 10 may be b... | 06/18/1996 |
| 5439496 | Method for the vitrification of waste materials and apparatus to carry out the method A method and apparatus for vitrifying waste materials containing a high quantity of carbon are provided which include the use of a secondary combustion chamber for burning the waste gases resulting from an electrically heated glass melting furnace. Additi... | 08/08/1995 |
| 5399181 | Method and apparatus for preheating charging material having organic contaminants for glass melting furnaces A method and apparatus for preheating material in a glass melting furnace is provided. An indirect heat exchanger is utilized in which exhaust gases from the glass melting furnace are directed, in a counter flow relation, to raw materials and glass cullet... | 03/21/1995 |
| 5243621 | Method of feeding glass batch to a glass-melting furnace A method of feeding glass to a glass-melting furnace for making a vitreous material, a heated airstream containing air at a temperature in excess of 1,000° C. is passed down vertical cylinders towards the crown of the glass-melting furnace. Powdered glas... | 09/07/1993 |
| 5102439 | Method for melting glass by measurement of non-bridging oxygen A method for making better quality molten glass in a glass melter, the glass having the desired viscosity and, preferably, also the desired resistivity so that the glass melt can be established effectively and the product of the glass melter will have the... | 04/07/1992 |
| 5057140 | Apparatus for melting glass batch material An apparatus for melting glass batch material, the apparatus forming glass batch material into a pile having an elongate sloping surface, having a feed device for feeding batch material to an upper part of the pile and a pushing device which is located be... | 10/15/1991 |
| 5035735 | Process for vitrifying environmentally hazardous waste material in a glass melting furnace Process for vitrifying environmentally hazardous waste material in a glass melting furnace includes forming a batch including the waste material and no more than 30 weight percent additives including phonolite and SiO2 containing substances. A ... | 07/30/1991 |
| 5004706 | Producing molten glass and batch components therefor A method of producing molten glass wherein silica is heated with a batch component comprising a sodium alkaline earth silicate which includes a major portion of the sodium in the resultant molten glass. There is also disclosed a batch component for use in... | 04/02/1991 |
| 4973346 | Glassmelting method with reduced nox generation A glassmelting method wherein glassforming materials are preheated prior to entering the melting vessel by direct contact with combustion products from the melting vessel produced by combustion carried out with pure oxygen or oxygen-enriched air.... | 11/27/1990 |
| 4957527 | Method and apparatus for heat processing glass batch materials An apparatus and method are disclosed for processing glass-making materials under oxidizing conditions, and for processing materials, such as hazardous or toxic wastes, or smelting under reducing conditions. As a glass-making apparatus the invention inclu... | 09/18/1990 |
| 4882736 | Method for efficiently using flue gas energy in a glass furnace Raw materials are fed into the charging end of a melting section which is heated by electrodes in the glass bath. The melted charge is then clarified under fossil fuel burners in a clarifying section, where the highest temperature of the furnace is mainta... | 11/21/1989 |
| 4877449 | Vertical shaft melting furnace and method of melting A vertical shaft melting furnace wherein meltable solids are charged to the upper region of a bed supported only by a fluid cooled support grid having openings smaller than the average diameter of the charged solids wherein submerged combustion is maintai... | 10/31/1989 |
| 4875919 | Direct contact raining bed counterflow cullet preheater and method for using An improved method and apparatus for preheating cullet used as feedstock for a glass furnace. A direct contact raining bed is described through which cullet is fed by gravity flow, with furnace flue gases as combustion products of a separately-fired heate... | 10/24/1989 |
| 4853024 | Scrap recovery apparatus The invention provides an improved apparatus for use in processing wet scrap textile glass fiber into a dry flowable powder. The apparatus includes a unique inlet and outlet structure to prevent clogging during operation. The apparatus also includes a uni... | 08/01/1989 |
| 4816056 | Heating and agitating method for multi-stage melting and refining of glass In a method of making glass or the like, wherein the batch materials are liquefied in a distinct zone from the refiner, the liquefied material is heated in an intermediate stage before being fed to the refiner. The heating entails intensified flames that ... | 03/28/1989 |
| 4789990 | Glass melting furnace of improved efficiency Disclosed is an improved efficiency glass melting furnace and a method of operation in which a mixture, or batch, is fed at a narrow side of a rectangular glass melting tank onto the molten glass mass (or bath) across the full width thereof. The furnace i... | 12/06/1988 |
| 4752314 | Method and apparatus for melting glass batch A glass melting system involving preheating, precalcining, and prefluxing of batch materials prior to injection into a glass furnace. The precursors are heated by convection rather than by radiation in present furnaces. Upon injection into the furnace, ba... | 06/21/1988 |
| 4725299 | Glass melting furnace and process A glass melting furnace and process wherein a second combustion zone toward the glass discharge end of the glass melting chamber is underport sideport fired while a first combustion zone toward the batch charge end of the glass melting chamber is side-of-... | 02/16/1988 |
