公开(公告)号：US09630855B2

公开(公告)日：2017-04-25

申请号：US14190507

申请日：2014-02-26

申请人： ECOLAB USA INC.

发明人： Carl Nicholas Urbani

IPC分类号： C01F7/06 ,  C22B3/22 ,  C22B21/00

CPC分类号： C01F7/06 ,  C01F7/148 ,  C01P2006/82 ,  C22B3/22 ,  C22B21/0015

摘要： The invention provides methods and compositions for improving dewatering of Bayer Process alumina trihydrate slurry. The method comprises adding an R-Succinic Compound (such as octadecenyl succinic acid, hexadecenyl succinic acid, and/or dodecenyl succinic acid) to the slurry. The R-Succinic Compound removes water that would otherwise be trapped within the filtered slurry cake and therefore reduces the energy needed to calcine the resulting solids.

公开(公告)号：US09533891B2

公开(公告)日：2017-01-03

申请号：US14113421

申请日：2013-04-05

申请人： SHOWA DENKO K.K.

发明人： Yu Akama

IPC分类号： C01F7/00 ,  C01F7/04 ,  C01F7/02 ,  C02F1/52 ,  B01D21/01 ,  C01F7/06 ,  C22B21/00 ,  B03D3/06 ,  C02F1/56 ,  B01D21/00 ,  B03D3/00 ,  C02F1/00 ,  C22B3/12 ,  C22B3/00 ,  C02F103/10

CPC分类号： C01F7/0653 ,  B01D21/01 ,  B03D3/06 ,  C01F7/06 ,  C01F7/066 ,  C02F1/56 ,  C02F2103/10 ,  C22B3/00 ,  C22B3/12 ,  C22B21/00

摘要： A washing method of red mud that is produced when an alumina-containing ore having a goethite to hematite mass ratio of 60/40 (goethite/hematite) or more in the iron component thereof is heat-treated with an alkaline solution at a temperature of 110° C. to 160° C. to obtain an aluminate liquor, including: mixing the red mud with a diluting fluid to obtain suspension that has an aluminum concentration of 95 g/L or less in terms of Al2O3; adding a flocculant to the suspension, wherein, the flocculant includes a polymer having a repeating unit derived from (meth)acrylic acid or a salt thereof and being substantially free from a repeating unit derived from vinylhydroxamic acid compound or a salt thereof; and settling and separating the red mud so as to wash the red mud.

摘要翻译： 当将具有针铁矿质量比为60/40（铁铁/赤铁矿）的铁配合物的铁精矿质量比的含有氧化铝的矿石在铁组分中时，产生的红泥的洗涤方法在碱溶液的温度下进行热处理 110℃至160℃以获得铝酸盐液体，其包括：将红泥与稀释液混合以获得以Al 2 O 3计的铝浓度为95g / L以下的悬浮液; 向悬浮液中添加絮凝剂，其中，絮凝剂包括具有衍生自（甲基）丙烯酸的重复单元或其盐并且基本上不含来自乙烯基异羟肟酸化合物或其盐的重复单元的聚合物; 并沉淀并分离红泥，以洗涤红泥。

公开(公告)号：US20140091042A1

公开(公告)日：2014-04-03

申请号：US14113421

申请日：2013-04-05

申请人： Yu Akama

发明人： Yu Akama

IPC分类号： C01F7/06

CPC分类号： C01F7/0653 ,  B01D21/01 ,  B03D3/06 ,  C01F7/06 ,  C01F7/066 ,  C02F1/56 ,  C02F2103/10 ,  C22B3/00 ,  C22B3/12 ,  C22B21/00

摘要： A washing method of red mud that is produced when an alumina-containing ore having a goethite to hematite mass ratio of 60/40 (goethite/hematite) or more in the iron component thereof is heat-treated with an alkaline solution at a temperature of 110° C. to 160° C. to obtain an aluminate liquor, including: mixing the red mud with a diluting fluid to obtain suspension that has an aluminum concentration of 95 g/L or less in terms of Al2O3; adding a flocculant to the suspension, wherein, the flocculant includes a polymer having a repeating unit derived from (meth)acrylic acid or a salt thereof and being substantially free from a repeating unit derived from vinylhydroxamic acid compound or a salt thereof; and settling and separating the red mud so as to wash the red mud.

摘要翻译： 当将具有针铁矿质量比为60/40（铁铁/赤铁矿）的铁配合物的铁精矿质量比的含有氧化铝的矿石在铁组分中时，产生的红泥的洗涤方法在碱溶液的温度下进行热处理 110℃至160℃以获得铝酸盐液体，其包括：将红泥与稀释液混合以获得以Al 2 O 3计的铝浓度为95g / L以下的悬浮液; 向悬浮液中添加絮凝剂，其中，絮凝剂包括具有衍生自（甲基）丙烯酸的重复单元或其盐并且基本上不含来自乙烯基异羟肟酸化合物或其盐的重复单元的聚合物; 并沉淀并分离红泥，以洗涤红泥。

公开(公告)号：US20070080114A1

公开(公告)日：2007-04-12

申请号：US11517178

申请日：2006-09-07

申请人： Douglas Dewitt-Dick ,  Bachan Ramharack ,  Russell Spence ,  Edward Badger ,  Lynn Hildebrand

发明人： Douglas Dewitt-Dick ,  Bachan Ramharack ,  Russell Spence ,  Edward Badger ,  Lynn Hildebrand

IPC分类号： C02F1/42

CPC分类号： B01J47/04 ,  B01J39/04 ,  C01F7/06 ,  C02F1/001 ,  C02F1/42 ,  C02F1/5236 ,  C02F1/56 ,  C02F9/00 ,  C02F2103/16 ,  B01J41/04

摘要： This invention relates to a process for reducing the contaminants in condensate resulting from the conversion of bauxite to alumina. The process involves coagulating solids in the condensate, filtering the condensate, and then purifying the condensate with a cation exchange resin and an anion exchange resin.

摘要翻译： 本发明涉及一种减少由于铝土矿转化为氧化铝而产生的冷凝物污染物的方法。 该方法包括凝结凝结物中的固体，过滤冷凝物，然后用阳离子交换树脂和阴离子交换树脂净化冷凝物。

公开(公告)号：US3966537A

公开(公告)日：1976-06-29

申请号：US511724

申请日：1974-10-03

申请人： Chosei Sato ,  Yasutoku Yamada ,  Yoshiyuki Takenaka

发明人： Chosei Sato ,  Yasutoku Yamada ,  Yoshiyuki Takenaka

IPC分类号： B01D1/14 ,  C01F7/06 ,  B01D1/28 ,  B01D35/18

CPC分类号： C01F7/06 ,  B01D1/14 ,  C01F7/066 ,  Y02P20/129 ,  Y02P20/57 ,  Y02P70/34 ,  Y10S159/25

摘要： In the manufacture of alumina by the Bayer process, a method comprising the steps of bringing the overflow from a multistage red mud thickener into counterflow contact with the steam generated in consequence of the flashing of bauxite-dissolved slurry so as to effect exchange of heat therebetween, separating and removing sand from the slurry by regulating the rate at which the slurry is discharged from the bottom of the column, and circulating the heated overflow and using it as the wash water in the former stage of the said thickener, all the said operations performed in one and the same column; and a device provided with inlet and outlet pipes for the overflow, an overflow type condenser, inlet and outlet pipes for the slurry, and a pipe for the removal of sand so as to effect the operations of the said method wholly in one and the same column.

摘要翻译： 在通过拜尔法制造氧化铝的方法中，包括以下步骤：使来自多级红泥增稠器的溢流物与由于铝土矿溶解的浆料闪烁而产生的蒸汽逆流接触，从而实现其间的热交换 通过调节浆料从塔底部排出的速度，并将加热的溢流循环并在上述增稠器的前一阶段将其用作洗涤水来分离和除去砂浆，所有这些操作 在同一列执行; 以及设置有用于溢流的入口和出口管的装置，溢流式冷凝器，用于浆料的入口和出口管，以及用于去除砂子的管道，以便完全在同一方面完成所述方法的操作 柱。

公开(公告)号：US3869537A

公开(公告)日：1975-03-04

申请号：US22862472

申请日：1972-02-23

申请人： SHOWA DENKO KK

发明人： SATO CHOSEI ,  YAMADA YASUTOKU ,  TAKENAKA YOSHIYUKI

IPC分类号： B01D1/14 ,  C01F7/06

CPC分类号： C01F7/066 ,  B01D1/14 ,  C01F7/06 ,  Y02P20/129 ,  Y02P20/57 ,  Y02P70/34

摘要： In the manufacture of alumina by the Bayer process, a method comprising the steps of bringing the overflow from a multistage red mud thickener into counterflow contact with the steam generated in consequence of the flashing of bauxite-dissolved slurry so as to effect exchange of heat therebetween, separating and removing sand from the slurry by regulating the rate at which the slurry is discharged from the bottom of the column, and circulating the heated overflow and using it as the wash water in the former stage of the said thickener, all the said operations performed in one and the same column; and a device provided with inlet and outlet pipes for the overflow, an overflow type condenser, inlet and outlet pipes for the slurry, and a pipe for the removal of sand so as to effect the operations of the said method wholly in one and the same column.

摘要翻译： 在通过拜尔法制造氧化铝的方法中，包括以下步骤：使来自多级红泥增稠器的溢流物与由于铝土矿溶解的浆料闪烁而产生的蒸汽逆流接触，从而实现其间的热交换 通过调节浆料从塔底部排出的速度，并将加热的溢流循环并在上述增稠器的前一阶段将其用作洗涤水来分离和除去砂浆，所有这些操作 在同一列执行; 以及设置有用于溢流的入口和出口管的装置，溢流式冷凝器，用于浆料的入口和出口管，以及用于去除砂子的管道，以便完全在同一方面完成所述方法的操作 柱。

公开(公告)号：US2107919A

公开(公告)日：1938-02-08

申请号：US455235

申请日：1935-02-01

申请人： ALUMINUM CO OF AMERICA

发明人： ORISON TURNER CARRELL ,  POWELL WEIGEL MELVIN

IPC分类号： C01F7/06

CPC分类号： C01F7/06 ,  C01F7/0666

公开(公告)号：US4661328A

公开(公告)日：1987-04-28

申请号：US905518

申请日：1986-09-10

申请人： Donald K. Grubbs

发明人： Donald K. Grubbs

IPC分类号： C01F7/06 ,  C01F7/47

CPC分类号： C01F7/062 ,  C01F7/06 ,  C01F7/47

摘要： A process is disclosed for purifying gibbsitic alumina-rich ore of high silica content including admixing the ore with an aqueous digestion solution high in silica concentration. In one aspect the digestion is performed with high alumina and soda concentration at low temperature, e.g., such as by atmospheric digestion.

摘要翻译： 公开了一种用于纯化高二氧化硅含量的富锌矿富氧矿石的方法，包括将矿石与二氧化硅浓度高的含水消解溶液混合。 在一个方面，在低温下（例如通过大气消化）以高氧化铝和苏打浓度进行消化。

公开(公告)号：US4432947A

公开(公告)日：1984-02-21

申请号：US398831

申请日：1982-07-16

申请人： Pierre Maurel

发明人： Pierre Maurel

IPC分类号： C01D1/04 ,  C01F7/06 ,  C01G39/02

CPC分类号： C01G39/02 ,  C01D1/04 ,  C01F7/06 ,  C01P2006/80

摘要： A process for obtaining molybdenum as a useful product from aqueous solutions to be purified, according to claim 1 of French patent No. 2 404 601, which contain, besides said molybdenum, alkali metal carbonate, sulphate, hydroxide or hydrogen carbonate and which may also contain uranium, and inorganic and/or organic impurities, said solutions being treated at a temperature which is at most equal to the boiling temperature by means of lime to convert the alkali metal carbonate into hydroxide and to precipitate the insoluble calcium salts formed, then separating and washing the first precipitate which essentially contains calcium carbonate, from an alkali metal hydroxide-enriched liquor, which is concentrated by evaporation at the same time as the washing liquor of the first precipitate, to produce an alkali metal hydroxide content which is at most equal to 50%, to produce a second precipitate formed by a mixture of alkali metal molybdate and sulphate, characterized in that said solid mixture is dispersed in an acid aqueous liquor which is heated at from 120.degree. C. to 250.degree. C. under pressure to cause precipitation of anhydrous Mo0.sub.3 which is subsequently separated from the mother liquor which essentially contains alkali metal sulphate.

摘要翻译： 根据法国专利No.2404601的权利要求1的从待纯化水溶液中获得钼作为有用产物的方法，除了所述钼之外，还含有碱金属碳酸盐，硫酸盐，氢氧化物或碳酸氢盐，并且还可以 含有铀和无机和/或有机杂质，所述溶液通过石灰在至多等于沸点温度的温度下处理，以将碱金属碳酸盐转化为氢氧化物并沉淀形成的不溶性钙盐，然后分离 并且从碱金属氢氧化物富集的液体中洗涤基本上含有碳酸钙的第一沉淀物，其与第一沉淀物的洗涤液同时蒸发浓缩，以产生最多相等的碱金属氢氧化物含量 至50％，以产生由碱金属钼酸盐和硫酸盐的混合物形成的第二沉淀物，其特征在于所述固体微粒 将其分散在酸性水溶液中，该液体在120℃加压至250℃，在压力下引起无水MoO 3的沉淀，其随后与基本上含有碱金属硫酸盐的母液分离。

公开(公告)号：US3738411A

公开(公告)日：1973-06-12

申请号：US3738411D

申请日：1970-07-31

申请人： TATABANYAI SZENBANYAK

发明人： LAZAR F

IPC分类号： C01F7/06 ,  B01D7/00 ,  B01D3/02 ,  B01D9/00 ,  B01D11/04 ,  C01F7/34 ,  F26B3/12

CPC分类号： C01F7/06 ,  Y10S159/34

摘要： Alumina-containing minerals, such as bauxite, are digested in sodium aluminate liquor, wherein the digestion liquor leaves the digester at a temperature above 150*C and is conducted, without flashing, in a heat exchanger in a countercurrent flow with respect to the feed liquor for the digester so that the temperature difference between the two liquors is less than 10*C.

摘要翻译： 含铝氧化物的矿物，例如铝土矿，在铝酸钠液体中消化，其中消化液体在高于150℃的温度下离开蒸煮器，并且在热交换器中以相对于进料的逆流流动而不闪烁地进行 蒸煮器的液体，使两种液体之间的温差小于10℃。