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1. 发明申请

WO1996016193A1 DEVICE FOR DEGASSING AND SEPARATING THE INCLUSIONS IN A LIQUID METAL BATH 审中-公开
标题翻译：用于在液体金属浴中分解和分离包装的装置
公开(公告)号：WO1996016193A1
公开(公告)日：1996-05-30
申请号：PCT/FR1995001477
申请日：1995-11-08
申请人： ALUMINIUM PECHINEY , PECHINEY RHENALU
发明人： ALUMINIUM PECHINEY , PECHINEY RHENALU , DUBUS, Alain , LE BRUN, Pierre
IPC分类号： C22B09/05
CPC分类号： C22B21/066 , C22B9/055
摘要： Device for continuously treating a flow of liquid metal comprising the disolved suspended impurities, said device comprising a container characterized in that said container has at least one assembly comprised of a gas curtain traversing totally the cross-section of the liquid metal flow and also a calm zone wherein the liquid metal flow is purified due to an assisted settling.
摘要翻译：用于连续处理包含所述悬浮杂质的液态金属流的装置，所述装置包括容器，其特征在于，所述容器具有至少一个组件，其包括完全横穿所述液态金属流的横截面的气幕，以及平静其中液体金属流由于辅助沉降而被净化。

2. 发明申请

WO1998005915A1 ROTARY GAS DISPERSION DEVICE FOR TREATING A LIQUID ALUMINIUM BATH 审中-公开
标题翻译：用于处理液体铝浴的旋转气体分散装置
公开(公告)号：WO1998005915A1
公开(公告)日：1998-02-12
申请号：PCT/FR1997001367
申请日：1997-07-23
申请人： PECHINEY RHENALU , ALUMINIUM PECHINEY , LE BRUN, Pierre , XUEREB, Catherine , BERTRAND, Joël
发明人： PECHINEY RHENALU , ALUMINIUM PECHINEY
IPC分类号： F27D23/04
CPC分类号： F27D27/00 , C22B9/05 , C22B21/064
摘要： A rotary gas dispersion device for use in a liquid aluminium treatment vessel is disclosed. The device is useful for reducing surface disturbance, splashing and vortices while maintaining the effectiveness of the treatment. Said device includes a rotor (1) consisting of a set of blades (5) and a substantially flat disc (4) thereabove. Gas is injected through the central hub and side ports (10) between the blades. The ratio of the outer diameter of the rotor to the diameter of the central hub thereof is of 1.5-4.
摘要翻译：公开了一种用于液态铝处理容器的旋转式气体分散装置。该设备可用于减少表面扰动，飞溅和涡流，同时保持治疗的有效性。所述装置包括由一组叶片（5）和在其上方的基本平坦的盘（4）组成的转子（1）。气体通过中心毂和叶片之间的侧端口（10）注入。转子的外径与其中心毂的直径之比为1.5-4。

3. 发明申请

WO1995012000A1 LADLE FOR FILTERING LIQUID METAL ON A FILTER MEDIUM WITH IMPROVED HEATING 审中-公开
标题翻译：用于过滤加热过滤器过滤液体的过滤器
公开(公告)号：WO1995012000A1
公开(公告)日：1995-05-04
申请号：PCT/FR1994001246
申请日：1994-10-26
申请人： ALUMINIUM PECHINEY , PECHINEY RHENALU
发明人： ALUMINIUM PECHINEY , PECHINEY RHENALU , GUILLAUME, Clément
IPC分类号： C22B09/02
CPC分类号： C22B9/023 , C22B21/066 , C22B26/22 , Y02P10/234
摘要： A ladle for filtering liquid metal such as Al, Mg or alloys thereof on a filter medium such as a gravel bed (2, 3), comprising a first heater (6) located outside the bed and the liquid metal, and a second heater (11), e.g. an immersion heater, arranged in a liquid metal flow channel (8) adjacent the filter bed (2, 3).
摘要翻译：一种用于在诸如砾石床（2,3）的过滤介质上过滤诸如Al，Mg或其合金的液体金属的钢包，包括位于床外部的第一加热器（6）和液态金属，以及第二加热器 11），例如浸没式加热器，布置在邻近过滤床（2,3）的液态金属流动通道（8）中。

4. 发明申请

WO1998023551A1 METHOD FOR THE INSOLUBILISATION AND CONSOLIDATION OF USED BRASQUES FROM HALL-HEROULT ELECTROLYTE VESSELS 审中-公开
标题翻译：从HALL-HEROULT电解槽中分离和合并使用的方法
公开(公告)号：WO1998023551A1
公开(公告)日：1998-06-04
申请号：PCT/FR1997002123
申请日：1997-11-25
申请人： ALUMINIUM PECHINEY
发明人： ALUMINIUM PECHINEY , PERSONNET, Pierre , BOUZAT, Gilbert
IPC分类号： C04B18/02
CPC分类号： A62D3/33 , A62D2101/40 , A62D2101/45 , A62D2101/49 , C04B18/023 , Y02W30/91 , C04B14/106 , C04B18/021 , C04B18/0481
摘要： The invention concerns a method for the insolubilisation and consolidation in the form of pellets of used brasques from electrolyte vessels for producing aluminium comprising the grinding of said brasques and mixing them closely with various refractory pulverulent additives before burning characterised in that it consists in: introducing a first additive selected from the group of aluminium silicates for fixing the alkaline metals during burning; introducing a second additive which, during burning, will combine with the saturating fluorine-containing compounds to form new stable and insoluble compounds and by its non-combined supernatant fraction, will ensure the consolidation of the mixture, and this additive is selected from the group of calcium oxides and salts and preferably of lime cements and mortars; carrying out a forming by agglomerating in the form of pellets the close mixture of used ground brasques with said first and second pulverulent additives before burning at a temperature between 700 DEG C and 950 DEG C.
摘要翻译：本发明涉及一种用于生产铝的电解质容器用的使用的手套颗粒形式的不溶化和固结的方法，包括研磨所述的手套并将它们与各种耐火粉状添加剂紧密地混合在一起，其特征在于它包括：引入第一添加剂，选自硅酸铝硅酸盐，用于在燃烧期间固定碱金属; 引入第二种添加剂，其在燃烧期间将与饱和的含氟化合物结合形成新的稳定和不溶性化合物，并通过其非组合的上清液部分将确保混合物的固结，并且该添加剂选自的氧化钙和盐，最好是石灰水泥和砂浆; 在700至950℃的温度下燃烧之前，以颗粒形式将所使用的研磨布的紧密混合物与所述第一和第二粉状添加剂一起进行成形。

5. 发明申请

WO1998019967A1 MANUFACTURE OF CALCINED ALUMINA WITH CRYSTALLITE SIZE ADJUSTED ON REQUEST WITH LOW DISPERSION 审中-公开
标题翻译：具有低分散性要求调整的结晶尺寸的计算氧化铝的制造
公开(公告)号：WO1998019967A1
公开(公告)日：1998-05-14
申请号：PCT/FR1997001966
申请日：1997-11-03
申请人： ALUMINIUM PECHINEY
发明人： ALUMINIUM PECHINEY , DEVILLE, Jean , LAMERANT, Jean-Michel
IPC分类号： C01F07/44
CPC分类号： C01F7/442 , C01P2004/50 , C01P2004/51 , C01P2004/52 , C01P2004/61 , C04B35/111
摘要： The invention concerns a method for manufacturing alumina for ceramics by calcination of alumina trihydrate in the presence of a mineralising agent such as a halogenated compound and/or a boron compound, said calcined alumina being constituted of friable conglomerates of elemental particles or alpha alumina crystallite the size of which is adjusted on request with a confined unimodal distribution of the crystallite size. The invention is characterised in that the calcination in industrial furnace, in renewed oxidising atmosphere, of the alumina trihydrate filler at a temperature between 800 DEG C and 1300 DEG C for half an hour to four hours is carried out simultaneously in the presence of a halogenated compound acting as mineralising agent and a recrystallisation modifier of alumina, with a silica base, evenly and closely distributed in the alumina trihydrate filler.
摘要翻译：本发明涉及通过在矿化剂如卤代化合物和/或硼化合物的存在下煅烧三水合氧化铝来制造陶瓷氧化铝的方法，所述煅烧氧化铝由易碎的元素颗粒或α氧化铝微晶构成，其尺寸根据要求进行调整，具有微晶尺寸的限制单峰分布。本发明的特征在于，在800℃至1300℃之间的温度下半小时至4小时的氧化铝三水合物填料的工业炉中，在再次氧化气氛中焙烧半小时至四小时，同时在卤代作为矿化剂的化合物和氧化铝的再结晶改性剂，具有二氧化硅基底，均匀且紧密地分布在三水合氧化铝填料中。

6. 发明申请

WO1997003924A1 METHOD FOR PURIFYING SODIUM ALUMINATE SOLUTIONS CONTAINING SODIUM OXALATE 审中-公开
标题翻译：纯化含有钠盐的铝酸钠溶液的方法
公开(公告)号：WO1997003924A1
公开(公告)日：1997-02-06
申请号：PCT/FR1996001104
申请日：1996-07-16
申请人： ALUMINIUM PECHINEY
发明人： ALUMINIUM PECHINEY , SOIRAT, Arnaud
IPC分类号： C01F07/47
CPC分类号： C01F7/473
摘要： A method for removing sodium oxalate from sodium aluminate solutions produced by alkaline bauxite treatment according to the Bayer process, wherein the sodium oxalate in at least one fraction of the previously decomposed sodium aluminate solution is precipitated using an agent that destabilises the supersaturated state of the sodium oxalate, i.e. a deoxalation initiator, and the oxalate, precipitated with the destabilising agent in the form of an insoluble residue is separated from the purified sodium aluminate solution which is then recycled as the treatment liquor. The destabilising agent or deoxalation initiator contacted with the sodium aluminate solution is a salt other than an oxalate, a metal oxide, a metal hydroxide or a mixture thereof, said destabilising agent remains insoluble in or chemically inert to the reaction medium, and following an optional regeneration step, said agent is recycled to the start of the process as a deoxalation initiator.
摘要翻译：一种根据拜耳法由碱性铝土矿处理产生的铝酸钠溶液中除去草酸钠的方法，其中至少一部分先前分解的铝酸钠溶液中的草酸钠使用不稳定钠的过饱和状态的试剂沉淀草酸盐，即脱氧引发剂，和与不溶性残渣形式的去稳定剂一起沉淀的草酸盐与纯化的铝酸钠溶液分离，然后将其再循环作为处理液。与铝酸钠溶液接触的去稳定剂或脱氧引发剂是草酸盐，金属氧化物，金属氢氧化物或其混合物以外的盐，所述去稳定剂对反应介质保持不溶或化学惰性，并且遵循任选的再生步骤，所述试剂作为脱氧引发剂再循环至该方法的开始。

7. 发明申请

WO1996030305A1 METHOD FOR PROCESSING TRIHYDRATE ALUMINA BAUXITE WITH A LOW REACTIVE SILICA CONTENT 审中-公开
标题翻译：具有低反应性二氧化硅含量的三水合铝氧化物的处理方法
公开(公告)号：WO1996030305A1
公开(公告)日：1996-10-03
申请号：PCT/FR1996000450
申请日：1996-03-26
申请人： ALUMINIUM PECHINEY
发明人： ALUMINIUM PECHINEY , LAMERANT, Jean-Michel
IPC分类号： C01F07/06
CPC分类号： C01F7/062 , C01F7/0606 , C01F7/47
摘要： A method for processing trihydrate alumina bauxite with a low reactive silica content by subjecting said bauxite milled at atmospheric pressure to Bayer method alkaline etching is described, being characterised in that a desilication or pre-desilication process is conducted prior to etching the milled bauxite for a period of at least 30 minutes at a temperature of not more than 108 DEG C in the presence of a spent liquor aliquot with a non critical sol Al2O3 g/l to caust Na2O g/l concentration ratio (Rp) of 0.5 to 0.7, with a concentration of caustic soda of 140 to 170 g Na2O/l, to obtain a desilicated suspension with a dry matter concentration of at least 0.7 tons per m of suspension, and in that, directly after the suspension is subjected to etching at atmospheric pressure by the remaining spent liquor with a non critical Rp of around 0.5 to 0.7 and with a caustic soda concentration set to 180 to 220 g Na2O/litre, a second desilication or post-desilication process is conducted for a period of at least 2 hours at a temperature of not more than 108 DEG C, generally of 95 to 195 DEG C, on the entire amount of suspension resulting from the etching, which then has an Rp of 1.05 to 1.17, prior to which the caustic soda concentration is adjusted by diluting to 140 to 180 g Na2O/litre.
摘要翻译：描述了通过将在大气压下研磨的所述铝土矿经过拜耳法碱蚀刻来处理具有低反应性二氧化硅含量的三水合氧化铝铝土矿的方法，其特征在于在蚀刻所述碾磨的铝土矿之前进行脱硅或预脱硅处理在不临界溶胶Al2O3 g / l的废液等分试样存在下，在不高于108℃的温度下，至少30分钟的时间至苛化Na 2 O g / l浓度比（Rp）为0.5至0.7，与浓度为140〜170g Na 2 O / l的苛性钠，得到干燥物质浓度为每m 3悬浮液至少0.7吨的脱溶液悬浮液，并且在悬浮液直接在剩余废液中的非临界Rp为约0.5至0.7，苛性钠浓度设定为180至220g Na 2 O /升的剩余废液的大气压，进行第二次脱气或脱溶后处理在不超过108℃（通常为95〜195℃）的温度下，由蚀刻产生的悬浮液的总量为至少2小时的时间，然后Rp为1.05〜1.17，之前为通过稀释至140至180g Na 2 O /升来调节苛性钠浓度。

8. 发明申请

WO1996023186A1 FIRING FURNACE WITH A REVOLVING FIRING ZONE AND A COOLED INTERNAL WALL 审中-公开
标题翻译：燃烧炉与改装的火区和冷却的内墙
公开(公告)号：WO1996023186A1
公开(公告)日：1996-08-01
申请号：PCT/FR1996000112
申请日：1996-01-23
申请人： ALUMINIUM PECHINEY , CHARMIER, François , BREME, Philippe
发明人： ALUMINIUM PECHINEY
IPC分类号： F27B13/02
CPC分类号： C04B35/52 , F27B13/02
摘要： A furnace (1) with a revolving firing zone for firing carbon-containing materials, comprising for example two parallel rows (2a, 2b) of firing chambers (3a, 3b) arranged with their own thermal insulation (17a, 17b) together or separately in a casing (8), generally made of concrete, which is cooled at least by the ventilation of its two external walls (9a, 9b). The two rows (2a, 2b) of firing chambers (3a, 3b) are separated by a single specifically cooled internal wall (10) secured to the casing bottom or floor (12). Said cooled internal wall (10) comprises a network of vertical, horizontal or other ducts or channels (16) for a liquid or gaseous coolant fluid flow, preferably consisting of two vertical members (13a, 13b) having the same width and being symmetrical in relation to the vertical axis of symmetry of the wall, said members further being secured at their lower ends (14a, 14b) to the floor (12) and held at a constant spacing "e" by vertical or horizontal spacers (15) evenly spaced apart to form vertical or horizontal channels (16) for circulating ventilation air.
摘要翻译：一种具有用于焙烧含碳材料的旋转烧制区的炉子（1），包括例如两个平行的排放室（3a，2b）的排列在其自身的隔热层（17a，17b）上的单独的（2a，2b）在通常由混凝土制成的壳体（8）中，其至少通过其两个外壁（9a，9b）的通风被冷却。发射室（3a，3b）的两排（2a，2b）由固定到壳体底部或底板（12）的单个特别冷却的内壁（10）分开。所述冷却的内壁（10）包括用于液体或气体冷却剂流体流动的垂直，水平或其它管道或通道（16）的网络，优选由具有相同宽度的两个垂直构件（13a，13b）组成，并且对称于所述构件还在其下端（14a，14b）处固定到地板（12），并且通过垂直或水平间隔件（15）以恒定间隔“e”保持均匀间隔分开形成用于循环通风空气的垂直或水平通道（16）。

9. 发明申请

WO1996019410A1 METHOD FOR THE REMOVAL OF IRON FROM SODIUM ALUMINATE LIQUORS RESULTING FROM ALKALINE ATTACK ON ALUMINA-MONOHYDRATE-CONTAINING BAUXITE 审中-公开
标题翻译：从包含含铝 - 含硫酸钡的碱处理碱性铝酸钠溶液中除去铝的方法
公开(公告)号：WO1996019410A1
公开(公告)日：1996-06-27
申请号：PCT/FR1995001703
申请日：1995-12-20
申请人： ALUMINIUM PECHINEY
发明人： ALUMINIUM PECHINEY , DEVILLE, Jean , LAMERANT, Jean-Michel
IPC分类号： C01F07/47
CPC分类号： C01F7/0633 , C01F7/062 , C01F7/47
摘要： Method of removing iron from supersaturated sodium aluminate solutions resulting from alkaline attack by the Bayer method of treating alumina-monohydrate-containing bauxite. The method comprises the successive steps of grinding and optionally desilicating, in the presence of a decomposed liquor fraction, and then attacking at a temperature above 200 DEG C, generally 240 - 270 DEG C, said ground bauxite possibly desilicated by the remaining decomposed liquor fraction, in order to solubilize the aluminate hydrate and form after the attack a suspension of insoluble residue or red mud in the sodium aluminate supersaturated liquor. After cooling and dilution, said supersaturated liquor is decanted to separate the mud or insoluble residue from the supersaturated liquor, which after filtering is decomposed in the presence of a seed. The invention is characterized in that, after attack and during cooling of the suspension by the gradual reduction of pressure in the reactors, a small quantity of a calcium-containing compound is introduced into the suspension at a temperature exceeding 140 DEG C.
摘要翻译：从由拜耳法处理含有一氧化铝的铝土矿的碱性侵蚀产生的过饱和铝酸钠溶液中去除铁的方法。该方法包括在分解的液体馏分存在下研磨和任选脱硅的连续步骤，然后在高于200℃（通常为240-270℃）的温度下进行攻击，所述研磨铝土矿可能由剩余的分解液体馏分，以便溶解铝酸盐水合物并在攻击后形成不溶性残渣或红泥在铝酸钠过饱和液体中的悬浮液。冷却和稀释后，将所述过饱和液倾析成分离来自过饱和液体的泥浆或不溶性残渣，过滤在种子存在下分解。本发明的特征在于，通过逐渐降低反应器中的压力，在冲击和冷却悬浮液之后，将少量含钙化合物在超过140℃的温度下引入悬浮液中。

10. 发明申请

WO1995003434A1 ELECTROREFINED ALUMINIUM WITH LOW URANIUM, THORIUM AND RARE EARTH CONTENT 审中-公开
标题翻译：具有低铀，钍和稀土含量的电化铝
公开(公告)号：WO1995003434A1
公开(公告)日：1995-02-02
申请号：PCT/FR1994000862
申请日：1994-07-11
申请人： ALUMINIUM PECHINEY , LEROY, Michel
发明人： ALUMINIUM PECHINEY
IPC分类号： C22C21/00
CPC分类号： C25C3/24 , C22B7/004 , Y02P10/212
摘要： Aluminium with a purety exceeding 99.998 %, produced by electrolytic refining, such as obtained at the outlet of the refining tank without subsequent processing, its rare earth content being less than 100 ppb and its total uranium and thorium content being less than 20 ppb. The invention also concerns a cost-reducing method for the manufacture of said aluminium. The high purity aluminium according to the invention is chiefly used in the metallization of electronic circuits.
摘要翻译：纯度超过99.998％的铝，通过电解精炼生产，如在精炼罐出口处获得，无需后续处理，其稀土含量小于100ppb，其总铀和钍总含量小于20ppb。本发明还涉及用于制造所述铝的成本降低方法。本发明的高纯度铝主要用于电子电路的金属化。

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