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1. 发明授权

US12006225B2 Bayer process 有权
公开(公告)号：US12006225B2
公开(公告)日：2024-06-11
申请号：US16971379
申请日：2019-02-22
申请人： Rio Tinto Alcan International Limited
发明人： Neil Hofstee , Alistair Gillespie , Tomas Mach , Warren Staker
IPC分类号： C01F7/473 , B01J20/18 , C01F7/145 , C01F7/147
CPC分类号： C01F7/473 , B01J20/18 , C01F7/145 , C01F7/147 , B01J2220/4887
摘要： A Bayer process increases oxalate removal in the red side of the Bayer process and at least substantially minimises, for example by at least substantially suppressing, precipitation of oxalates in the white side of the Bayer process.

2. 发明申请

US20220025489A1 Aluminum Extrusion Alloy 有权
公开(公告)号：US20220025489A1
公开(公告)日：2022-01-27
申请号：US17299282
申请日：2019-12-03
申请人： Rio Tinto Alcan International Limited
发明人： Jerome Fourmann , Nicholas C. Parson
IPC分类号： C22C21/02 , B21C23/00 , C22C21/08
摘要： An aluminum alloy includes Si and Mg in amounts (wt. %) within a quadrilateral defined by the following coordinates on an Mg/Si plot: I: 1.15 Si, 0.70 Mg, II: 0.95 Si, 0.55 Mg; III: 0.75 Si, 0.65 Mg; and IV: 0.95 Si, 0.85 Mg. The alloy also includes, in weight percent: Mn 0.40-0.80 Fe 0.25 max Cr 0.05-0.18 Cu 0.30-0.90 Ti 0.05 max Zr 0.03 max Zn 0.03 max B 0.01 max with the remainder of the alloy being aluminum and unavoidable impurities in amounts of up to 0.05 wt. % each and 0.15 wt. % total.

3. 发明授权

US11198925B2 Aluminum alloys having improved tensile properties 有权
公开(公告)号：US11198925B2
公开(公告)日：2021-12-14
申请号：US16087832
申请日：2017-03-10
申请人： Rio Tinto Alcan International Limited
发明人： Francis Breton , Bruno Bourassa , Alexandre Maltais , Clément Boudreault , Dany Tremblay
IPC分类号： C22C21/04 , B22D21/00 , C22F1/043 , C22C21/02 , C22C1/00 , B60B3/00
摘要： The present disclosure provides Al—Si—Mg aluminum alloys comprising a deliberate addition of Mn between 0.05-0.40 weight percent to increase at least one tensile property (such as the yield strength) of an aluminum product comprising such alloy. The Al—Si—Mg alloy comprises, in weight percent, 5-9% Si, 0.35-0.75% Mg, 0.05-0.4% Mn, less than 0.15% Fe, up to 0.15% Ti, 0.005-0.03% Sr and the balance being aluminum and unavoidable impurities, wherein the unavoidable impurities may be present in an amount of up to 0.05% each and up to 0.15% total. The present disclosure provides a foundry ingot comprising the above Al—Si—Mg aluminum alloy, a process for making the above Al—Si—Mg aluminum alloy and an aluminum alloy obtainable by said process.

4. 发明授权

US10815552B2 Aluminum alloy composition with improved elevated temperature mechanical properties 有权
公开(公告)号：US10815552B2
公开(公告)日：2020-10-27
申请号：US14309216
申请日：2014-06-19
申请人： Rio Tinto Alcan International Limited
发明人： Nicholas C. Parson , Pierre Marchand , Jean-Alain Laurin
IPC分类号： C22C32/00 , C22C21/08 , B22D19/14 , C22C49/06 , B22D21/00 , C22F1/05 , C22F1/047 , C22C1/06 , C22C1/02 , C22F1/043 , B22D25/06 , C22C21/02 , C22C47/08 , C22C49/14 , B22D15/00 , C22C1/10
摘要： An aluminum alloy includes, in weight percent, 0.50-1.30% Si, 0.2-0.60% Fe, 0.15% max Cu, 0.5-0.90% Mn, 0.6-1.0% Mg, and 0.20% max Cr, the balance being aluminum and unavoidable impurities. The alloy may include excess Mg over the amount that can be occupied by Mg—Si precipitates. The alloy may be utilized as a matrix material for a composite that includes a filler material dispersed in the matrix material. One such composite may include boron carbide as a filler material, and the resultant composite may be used for neutron shielding applications.

5. 发明授权

US10557188B2 Aluminum alloy composition and method 有权
公开(公告)号：US10557188B2
公开(公告)日：2020-02-11
申请号：US14662742
申请日：2015-03-19
申请人： Rio Tinto Alcan International Limited
发明人： Nicholas C. Parson , Greg Lea
IPC分类号： C22F1/04 , C22C21/00
摘要： An aluminum alloy composition includes, in weight percent: 0.5-0.7 manganese; 0.05-0.15 iron; 0.3-0.5 silicon; 0.020 max nickel; 0.05-0.15 titanium; 0.01 max copper; and 0.10 max zinc, with the balance being aluminum and unavoidable impurities. The alloy may also have a combined amount of manganese and silicon of at least 0.8 wt. % and/or a Mn/Si ratio of 2.25 or less. The alloy may tolerate higher nickel contents than existing alloys, while providing increased corrosion resistance, as well as similar extrudability, strength, and performance. Billets or other intermediate products formed of the alloy may be homogenized at 500-595° C. and controlled cooled at 400° C. per hour or less. The homogenized billet may be extruded into an extruded product, such as an aluminum alloy heat exchanger tube.

6. 发明授权

US10494280B2 Treatment of alkaline bauxite residue 有权
公开(公告)号：US10494280B2
公开(公告)日：2019-12-03
申请号：US14441449
申请日：2013-10-21
申请人： Rio Tinto Alcan International Limited
发明人： John Victor Anderson , Jean-Marc Rousseaux , Guy Peloquin , Ben O'Brien
IPC分类号： C02F9/00 , A62D3/33 , C02F1/52 , C01F7/00 , C01F7/06 , C01F7/02 , C02F1/66 , C22B3/12 , C02F103/16 , A62D101/24 , A62D101/43 , C02F101/10
CPC分类号： C02F9/00 , A62D3/33 , C01F7/005 , C01F7/02 , C01F7/066 , C02F1/5236 , C02F1/66 , C22B3/12 , A62D2101/24 , A62D2101/43 , C02F2101/10 , C02F2103/16
摘要： A process is disclosed for treating a Bayer process waste comprising a slurry containing bauxite residue and dissolved aluminum. The process comprises supplying the waste to a settling area to cause the bauxite residue to settle out of the slurry, thereby producing a supernatant liquor. The process further comprises neutralizing the supernatant liquor with a solution containing magnesium and calcium to produce a neutralized slurry containing precipitated hydrotalcites and thickening the neutralized slurry to produce a clarified effluent and a compacted slurry containing the precipitated hydrotalcites, part of said compacted slurry being recirculated to the supernatant liquor to be neutralized and/or directly to the neutralizing step. The clarified effluent and the compacted slurry are disposed of separately. Also disclosed is a plant for treating a Bayer process waste.

7. 发明授权

US10443140B2 Anode assembly 有权
公开(公告)号：US10443140B2
公开(公告)日：2019-10-15
申请号：US15323904
申请日：2015-07-01
申请人： Rio Tinto Alcan International Limited
发明人： Sébastien Becasse , Jean-François Bilodeau , Denis Laroche , Laurent Fiot , Steve Langlois
IPC分类号： C25C3/12 , C25C3/16 , C25C3/08
摘要： Anode assembly (100) comprising an anode (3) and an anode support (4) for the production of aluminum, characterized in that the anode assembly (100) comprises an electrical connecting element (1) to electrically connect the anode support (4) with the anode (3), and at least one thermally insulating element (6) arranged to reduce heat transfer between the anode (3) and the anode support (4) during the production of aluminum.

8. 发明授权

US09238184B2 Apparatus and method for refining a process liquor by gravity settling 有权
标题翻译：用于通过重力沉降来精炼处理液的装置和方法
公开(公告)号：US09238184B2
公开(公告)日：2016-01-19
申请号：US13816096
申请日：2011-08-10
申请人： Guy Peloquin , Alain Larouche , Alain Boivin , Matthieu St-Laurent , Régis Girard , Guy Simard
发明人： Guy Peloquin , Alain Larouche , Alain Boivin , Matthieu St-Laurent , Régis Girard , Guy Simard
IPC分类号： B01D21/18 , B01D21/00 , B01D21/24 , C01F7/14
CPC分类号： B01D21/0042 , B01D21/183 , B01D21/2461 , C01F7/147 , C01F7/148
摘要： An apparatus for refining a process liquor that includes solids, which apparatus includes a vessel having a base and a side wall that define an internal volume for containing the process liquor and for allowing gravity settling of the solids in the liquor, whereby to produce a refined liquor toward a top of the internal volume and a slurry toward a bottom of the internal volume, the apparatus further includes solids displacement elements disposed within the internal volume for directing settled solids and/or settling solids in the vicinity of the side wall or of the base toward a flow path of the slurry being extracted from the slurry outlet. A processing plant including the above refining apparatus and a method for refining a process liquor.
摘要翻译：一种用于精炼包括固体的处理液的装置，该装置包括具有底部和侧壁的容器，该容器限定用于容纳处理液体的内部容积并允许重力沉降液体中的固体，从而产生精制液体朝向内部体积的顶部并且朝向内部体积的底部的浆料，该装置还包括设置在内部容积内的固体移动元件，用于引导沉降的固体和/或将固体沉积在侧壁附近或基于从浆料出口提取的浆料的流动路径。一种包括上述精炼装置的处理设备和一种精炼处理液的方法。

9. 发明授权

US08961773B2 Method of producing aluminium in an electrolysis cell 有权
标题翻译：在电解池中生产铝的方法
公开(公告)号：US08961773B2
公开(公告)日：2015-02-24
申请号：US12997661
申请日：2009-06-05
申请人： Sylvain Fardeau , Benoît Sulmont
发明人： Sylvain Fardeau , Benoît Sulmont
IPC分类号： C25C3/06 , C25C3/14 , C25C3/20
CPC分类号： C25C3/20 , C25C3/14
摘要： The invention relates to a method of producing aluminum in an electrolysis cell, which includes setting up a succession of control periods of duration T, identifying perturbative tending operations on the cell that can introduce superfluous alumina in the electrolytic bath, noting the performance of the perturbative tending operations, determining a regulation feed rate B(k′) for each control period k′ and setting a specified feed rate SR(k′) equal to M(k′)×B(k′), where M(k′) is a predetermined modulation factor that modulates the regulation feed rate B(k′) so as to take into account a reduction of the needs of the cell induced by the superfluous alumina. The method of the invention makes it possible to significantly reduce the rate of occurrence of anode effects.
摘要翻译：本发明涉及一种在电解池中生产铝的方法，其包括建立持续时间T的一系列控制周期，识别可在电解槽中引入多余氧化铝的电池上的扰动倾向操作，注意扰动的性能确定每个控制周期k'的调节进给速率B（k'），并设定等于M（k'）×B（k'）的指定进给速率SR（k'），其中M（k'）是调节调节进料速率B（k'）的预定调制因子，以便考虑由多余氧化铝诱导的细胞需求的降低。本发明的方法可以显着降低阳极效应的发生率。

10. 发明申请

US20140138240A1 ALUMINUM SMELTER INCLUDING CELLS WITH CATHODE OUTPUT AT THE BOTTOM OF THE POT SHELL AND CELL STABILIZING MEANS 审中-公开
标题翻译：含有阴茎输出的细胞在铝壳底部和细胞稳定方式的铝细丝
公开(公告)号：US20140138240A1
公开(公告)日：2014-05-22
申请号：US14232145
申请日：2012-07-10
申请人： Olivier Martin , Steeve Renaudier , Benoit Bardet , Christian Duval
发明人： Olivier Martin , Steeve Renaudier , Benoit Bardet , Christian Duval
IPC分类号： C25C3/08 , C25C3/16
CPC分类号： C25C3/08 , C25C3/16
摘要： Aluminum smelter comprising: (i) a series of electrolytic cells, comprising an anode, a cathode and a pot shell equipped with a side wall and a bottom, each cathode including at least one cathode output, (ii) a main electric circuit through which an electrolysis current passes, including an electrical conductor connected to each cathode output of a cell N, and to the anode of a cell N+1, and (iii) a means to stabilize the electrolytic cells. At least one of the cathode outputs of the cathode of N passes through the bottom of the pot shell, and during the operation of N and N+1, the electrolysis current passes, in an upstream-downstream direction only, through each electrical conductor extending from each cathode output of N in the direction of N+1.
摘要翻译：铝冶炼炉包括：（i）一系列电解池，包括阳极，阴极和配有侧壁和底部的锅壳，每个阴极包括至少一个阴极输出，（ii）主电路，电解电流通过，包括连接到电池单元N的每个阴极输出的电导体和电池单元N + 1的阳极，以及（iii）稳定电解槽的装置。 N的阴极的至少一个阴极输出通过罐壳的底部，并且在N和N + 1的操作期间，电解电流仅在上游 - 下游方向上通过每个电导体延伸从N的每个阴极输出N + 1的方向。

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