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公开(公告)号：US11440847B2
公开(公告)日：2022-09-13
申请号：US16646409
申请日：2018-09-13
IPC分类号： C04B35/043 , C04B35/626 , C04B35/63 , C04B35/66 , C04B38/00
摘要： A method for producing a granular material from sintered magnesia by sintering of pressed articles, in particular pellets, from MgO powder, preferably from caustic MgO powder, and subsequent mechanical comminution of the pressed articles, the sintering being carried out in such a way that the granular material has a grain porosity (total porosity), according to DIN EN 993-1:1195-04 and DIN EN 993-18:1999-01, of from 15 to 38 vol %, preferably 20 to 38 vol %. Also, a batch for producing a coarse ceramic, refractory, shaped or unshaped product containing the porous sintered magnesia, to such a product produced from the batch and to a method for its production, to a lining, in particular a working casing and/or a backing, of a large-volume industrial furnace, the lining, in particular the working casing and/or the backing, having at least one such product, as well as to such an industrial furnace.
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公开(公告)号：US11440089B2
公开(公告)日：2022-09-13
申请号：US16631669
申请日：2018-08-21
摘要： A refractory lining structure for a metallurgical vessel is characterized by at least one elongated expansion joint formed in and extending through the surface of the working lining in a substantially vertical direction. The elongated expansion joint accommodates thermal expansion of the working lining in a metallurgical vessel such as, for example, a tundish during preheating for a continuous casting operation. The elongated expansion joint decreases crack formation, delamination, and spalling of the working lining from underlying back-up linings and/or safety linings in metallurgical vessels during preheating and use, while still facilitating metal skull removal after the completion of metallurgical operations.
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公开(公告)号：US11180418B2
公开(公告)日：2021-11-23
申请号：US16072893
申请日：2017-01-26
发明人： Diletta Sciti , Luca Zoli , Valentina Medri
IPC分类号： C04B35/56 , C04B35/626 , C04B35/634 , C04B35/645 , C04B35/66 , C04B35/58 , C04B35/80 , F02K9/97 , F02K9/60 , C04B35/628 , C04B35/63
摘要： The present invention relates to a process for the production of fiber-reinforced composite materials with an ultra-refractory, high tenacity, high ablation resistant matrix with self-healing properties, prepared from highly sinterable slurries. The composite material is produced using techniques of infiltration and drying at ambient pressure or under vacuum, and consolidated by sintering with or without the application of gas or mechanical pressure.
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公开(公告)号：US10815155B2
公开(公告)日：2020-10-27
申请号：US16124913
申请日：2018-09-07
发明人： Kenji Matano , Nobuo Tomura
IPC分类号： C04B35/484 , C03B5/43 , C04B35/05 , C04B35/48 , F27D1/00 , C04B35/66 , C04B35/657
摘要： To provide a high-zirconia electrocast refractory in which occurrence of cracks in manufacture and occurrence of cracks in use as a furnace material is further reduced while maintaining extremely high corrosion resistance to molten glass. The high-zirconia electrocast refractory contains 96.7 to 98.5 mass % of ZrO2, 0.8 to 2.7 mass % of SiO2, 0 to 0.2 mass % of Na2O, 0.21 to 1 mass % of K2O, 0.1 to 0.4 mass % of Al2O3, and does not substantially contain B2O3, in terms of oxide, as a chemical composition, wherein contents of the Na2O and the K2O satisfy a relation of following Formula (1) 0.15 mass %≤CK2O/2+CNa2O≤0.6 mass % (1) where CK2O is the content of K2O and CNa2O is the content of Na2O, and each of the contents is expressed by mass % in the refractory.
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公开(公告)号：US20200299195A1
公开(公告)日：2020-09-24
申请号：US16822998
申请日：2020-03-18
IPC分类号： C04B35/10 , C04B35/66 , C04B35/057 , C04B35/44 , C04B35/04
摘要： The present invention provides for a solid body composition that is able to withstand penetration and/or reaction with salts or salt compositions in one or more states of matter (solid, liquid, gas). The composition comprises at least one aggregate and at least one binder. The aggregate may be chosen based on its thermodynamic stability compared to a salt composition. The binder comprises a resol resin or a novolac resin, or a combination of one or more of a resol resin and one or more of a novolac resin. The resin binder sets to provide initial strength then is pyrolized to form a glassy carbon which acts as a barrier to a salt phase or phases of an industrial process.
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公开(公告)号：US10414695B2
公开(公告)日：2019-09-17
申请号：US15763699
申请日：2016-09-29
IPC分类号： C04B35/66 , F27D1/06 , C04B35/101 , C04B35/626 , C04B35/63 , C04B35/632 , F27D1/10 , C21B7/06
摘要： In a monolithic refractory, in terms of a proportion in 100 mass % of a refractory raw material having a grain size of 8 mm or smaller, an amount of CaXSr1−XAl2O4 (where, 0≤X≤0.5) is 0.5 mass % or more and 10 mass % or less, and a polyvalent metal salt of oxycarboxylic acid is 0.05 mass % or more and 1.0 mass % or less.
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公开(公告)号：US10407350B2
公开(公告)日：2019-09-10
申请号：US15741512
申请日：2016-07-08
申请人： BIGARAN S.R.L.
发明人： Gian Luigi Cattaneo
IPC分类号： C04B35/10 , C04B35/14 , C04B35/82 , C04B35/622 , C04B35/101 , C04B35/624 , C04B35/626 , C04B35/632 , C04B35/634 , C04B35/638 , C04B35/64 , C04B35/66 , C04B35/63 , C04B35/657 , H01B3/08 , H01B3/12 , H01B17/42 , H01B19/00 , H01H33/08
摘要： Refractory composite material based on Al2O3 in the form of corundum, SiO2 in the form of quartz and sodium aluminate having the formula NaAl11O17 or Na2O— 11Al2O3, method for preparing the same, use thereof for preparing manufactured items, as well as manufactured items made thereby and use thereof.
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公开(公告)号：US10364188B2
公开(公告)日：2019-07-30
申请号：US15764078
申请日：2016-09-22
发明人： Davide Davoli , Simone Davoli
摘要： A composition for a refractory material comprising a base mixture having a composition in oxide (mol %) as follows: SiO2 between 69% and 73%; Al2O3 between 22% and 28%; TiO2 between 0.4% and 1%; Fe2O3 between 0.2% and 1%; CaO between 0.1% and 1%; MgO between 0.1% and 1%; K2O between 0.5% and 2%; Na2O between 0.1% and 0.5%; and comprising a filler mixture comprising at least one from between a schamotte and a smelting agent.
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公开(公告)号：US10364187B2
公开(公告)日：2019-07-30
申请号：US15555102
申请日：2017-06-23
申请人： Resco Products, Inc.
摘要： A jamb spray mix comprising: 0.1% to 10% phosphate by weight based on total weight of dry ingredients in the mix, 5% to 15% plasticizer by weight based on total weight of dry ingredients in the mix, the balance of dry ingredients including fused silica particles and impurities, and at least 20% water by weight based on total weight of the mix. In certain non-limiting embodiments, a coating of the jamb spray mix is applied to a refractory brick surface region in a coke oven using an air pressurized applicator and associated nozzle.
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公开(公告)号：US10300423B2
公开(公告)日：2019-05-28
申请号：US15263073
申请日：2016-09-12
摘要： A sealed honeycomb structure may include porous walls dividedly forming inlet cells and outlet cells extending from an end surface of an inlet side to an end surface of an outlet side, an outlet side sealing portion, and an inlet side sealing portion, wherein at least one outlet cell is a reinforced cell, where a reinforced part for reinforcing the outlet cell is formed at at least one corner portion at which the walls on a cross-section vertical to an extending direction of the cell cross each other, and wherein the inlet cell is a non-reinforced cell where the reinforced part is not formed at all the corner portions at which the walls on the cross-section vertical to the extending direction of the cell cross each other.
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