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公开(公告)号：US20210140020A1
公开(公告)日：2021-05-13
申请号：US17251126
申请日：2019-06-07
申请人： ELKEM ASA
发明人： Amelie Dieudonne , Ole Svein Klevan
摘要： The present invention relates to a silicon based alloy comprising between 45 and 95% by weight of Si; max 0.05% by weight of C; 0.4-30% by weight Cr; 0.01-10% by weight of Al; 0.01-0.3% by weight of Ca; max 0.10% by weight of Ti; up to 25% by weight of Mn; 0.005-0.07% by weight of P; 0.001-0.02% by weight of S; the balance being Fe and incidental impurities in the ordinary amount, a method for the production of said alloy and the use thereof.
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公开(公告)号：US20210123112A1
公开(公告)日：2021-04-29
申请号：US17142676
申请日：2021-01-06
申请人： P.C. Campana, Inc.
摘要： A cored wire for refining molten metal includes a reactive core material that is in the form of a solid rod. A non-reactive particulate material radially surrounds the solid core material, and an exterior metal jacket radially surrounds the particulate material. The particulate material may include wood or other material that when introduced into the molten metal, undergoes thermal decomposition to release carbon dioxide, hydrocarbons, or combinations thereof as a shroud around the core material.
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公开(公告)号：US10947050B2
公开(公告)日：2021-03-16
申请号：US16612912
申请日：2018-05-03
发明人： Gerald Rosenfellner
摘要： A conveyor system (1) for the continuous or discontinuous conveyance of a reactive and/or hot and/or abrasive material to be conveyed along a conveyor path includes a system housing (3) enclosing the conveyor path, which has at least one fluid inlet (5) for the introduction of fluid into the system housing (3), at least one fluid outlet (7, 9) for the discharge of fluid out of the system housing (3), a charging inlet (4) for introducing material to be conveyed into the system housing (3), and, apart from the at least one fluid inlet (5), the at least one fluid outlet (7, 9) and the charging inlet (4), are implemented in a technically fluid-tight manner.
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公开(公告)号：US20210071274A1
公开(公告)日：2021-03-11
申请号：US16957444
申请日：2018-12-12
发明人： Kenji Nakase , Yoshie Nakai , Naoki Kikuchi
摘要： Proposed is a method for removing phosphorus from a phosphorus-containing substance which is applicable in an industrial scale so as to effectively reduce phosphorus contained in the phosphorus-containing substance. In this method, the phosphorus-containing substance used as a raw material for metal smelting or metal refining is reacted with a nitrogen-containing gas at a treatment temperature T (° C.) which is lower than a melting temperature (Tm) of the substance, so that phosphorus is removed preferably in the form of phosphorus nitride (PN). In this regard, a nitrogen partial pressure and an oxygen partial pressure in the nitrogen-containing gas are preferably controlled, thereby reducing a load of dephosphorization process, for example.
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公开(公告)号：US10935320B2
公开(公告)日：2021-03-02
申请号：US16002419
申请日：2018-06-07
摘要： Method for determining the state of a fire-resistant lining of a vessel containing molten metal in particular in which maintenance data, production data, and wall thicknesses at least at locations with the highest degree of wear are measured or ascertained together with additional process parameters of at least one identical/similar vessel after the vessel has been used. The data is collected and stored in a data structure. A calculating model is generated from at least some of the measured or ascertained data or parameters, and the data or parameters are evaluated using the calculating model using calculations and subsequent analyses. Thus, related or integral ascertaining processes and subsequent analyses can be carried out, on the basis of which optimizations relating to both the vessel lining as well as the complete process of the molten metal in the vessel are achieved.
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公开(公告)号：US10889775B2
公开(公告)日：2021-01-12
申请号：US16199705
申请日：2018-11-26
发明人： James A. Mennell , Daniel J. Despen
IPC分类号： C10L5/44 , C21B5/00 , C10B49/02 , C10B53/02 , C10B57/02 , C10L5/04 , C10B47/30 , C10L5/36 , C22B4/02 , H01B1/04 , C10B39/02 , C10B41/00 , C10B57/06 , C10B57/10 , C10B45/00 , B01J21/18 , C10B39/00 , C10B43/02 , C21C5/52 , C01B32/318 , C01B32/312 , C21B13/00
摘要： This invention provides processes and systems for converting biomass into highcarbon biogenic reagents that are suitable for a variety of commercial applications. Some embodiments employ pyrolysis in the presence of an inert gas to generate hot pyrolyzed solids, condensable vapors, and non-condensable gases, followed by separation of vapors and gases, and cooling of the hot pyrolyzed solids in the presence of the inert gas. Additives may be introduced during processing or combined with the reagent, or both. The biogenic reagent may include at least 70 wt %, 80 wt %, 90 wt %, 95 wt %, or more total carbon on a dry basis. The biogenic reagent may have an energy content of at least 12,000 Btu/lb, 13,000 Btu/lb, 14,000 Btu/lb, or 14,500 Btu/lb on a dry basis. The biogenic reagent may be formed into fine powders, or structural objects.
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公开(公告)号：US10858261B2
公开(公告)日：2020-12-08
申请号：US15748323
申请日：2016-07-26
发明人： Felix Antonio Lopez Gomez , Francisco Jose Alguacil Priego , Jose Ramon Gonzalez Gracia , Mario Sergio Ramirez Zablah
IPC分类号： C01F7/16 , C22B7/04 , C21C7/076 , C04B35/622 , C04B35/44 , C04B7/32 , C04B35/626 , C04B35/64 , C04B5/00 , C04B35/22 , C21C7/064 , C22B21/00 , C22B21/04
摘要： The present invention relates to a method for obtaining calcium aluminates for metallurgical use from non-saline aluminum slags by means of reactive grinding and thermal treatment.
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公开(公告)号：US10830537B2
公开(公告)日：2020-11-10
申请号：US16049875
申请日：2018-07-31
IPC分类号： F27D13/00 , F27D3/00 , F27D21/00 , F27D19/00 , C21B13/12 , F27B7/28 , F27B3/28 , F27B3/18 , C21C5/56 , C21C5/52 , F27D3/14
摘要： A system and equipment to measure and control the feeding of load material into an electrical arc furnace (EAF) includes an automatic control device feeding the load material; a measuring device positioned between the EAF and the tilting platform that includes an upper plate adapted to slide against the EAF, a lower plate engaged to the tilting platform, and a ring structure therebetween having a peripheral ring wall, a ring plate extending across the ring structure, and a contact member coupled to the ring plate that upperly contacts the upper plate and lowerly approaches, without contacting the lower plate; and one or more sensors measuring a deformation of the ring plate upon application of a load on the upper plate.
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公开(公告)号：US10822678B2
公开(公告)日：2020-11-03
申请号：US15541964
申请日：2015-11-17
IPC分类号： C22C38/06 , C22C38/00 , H01F1/16 , C21D8/12 , C21C7/064 , C22C38/16 , C22C38/08 , C22C38/60 , C22C38/34 , C22C38/18 , C22C38/02 , C22C38/04 , H01F1/34
摘要： When a non-oriented electrical steel sheet is produced by hot rolling a slab containing, by mass %, C: not more than 0.0050%, Si: 1.5-5.0%, Mn: 0.20-3.0%, sol. Al: not more than 0.0050%, P: not more than 0.2%, S: not more than 0.0050% and N: not more than 0.0040% to form a hot rolled sheet, cold rolling the hot rolled sheet without conducting a hot band annealing and then subjecting to a finish annealing, a compositional ratio of CaO in oxide-based inclusions existing in the slab defined by CaO/(SiO2+Al2O3+CaO) is set to not less than 0.4 and/or a compositional ratio of Al2O3 defined by Al2O3/(SiO2+Al2O3+CaO) is set to not less than 0.3, and a coiling temperature in the hot rolling is set to not lower than 650° C.
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公开(公告)号：US10822668B2
公开(公告)日：2020-11-03
申请号：US15541789
申请日：2016-01-08
发明人： Michael Nispel , Guillaume Criniere , Eric Perrin , Thierry Chopin , Jose Noldin
摘要： Process for dephosphorization of molten metal during a refining process using a lime composition in the form of compacted particles having a Shatter Test Index of less than 20%, leading to a refined metal reduced in phosphorus components to the extent that the refined metal reduced in phosphorus is showing a phosphorus content lower than 0.02 w % based on the total weight of the refined metal reduced in phosphorus.
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