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1. 发明申请

US20220243300A1 BAUXITE PROCESSING METHOD 有权
公开(公告)号：US20220243300A1
公开(公告)日：2022-08-04
申请号：US17612457
申请日：2020-02-28
申请人： Johann EIRICH , Vitali WELMANN
发明人： Boris Nikolaevich ULKO , Johann EIRICH , Vitali WELMANN
IPC分类号： C22B3/22 , C01F7/46 , B01J8/14 , C22B21/02
摘要： A bauxite processing method including: preliminarily grinding bauxites; mixing the bauxites as ground with magnetic field treated water into a pulp; exposing the pulp in a reaction chamber to a rotating magnetic field created by rotating ferromagnetic elements, carried out in a vortex layer generated by ferromagnetic elements rotating at a speed of at least 2800 rpm, to achieve a magnetoelastic effect and provide forces and energies which enable metal reduction; and separating a resulting metal oxide mixture.

2. 发明申请

US20220227665A1 A Method and Apparatus for Processing Water Treatment Residuals 有权
公开(公告)号：US20220227665A1
公开(公告)日：2022-07-21
申请号：US17613850
申请日：2020-06-12
申请人： ARDEX Group GmbH
发明人： Mark Russell
IPC分类号： C04B7/32 , C02F11/08 , C02F11/13 , C02F11/123 , C02F1/00 , C01F7/46 , C04B28/06 , C04B28/14 , C04B7/02 , C04B7/24 , F23G5/027 , F27B7/08 , F27B7/36
摘要： A method for processing water treatment residuals, or other amorphous aluminium oxide or aluminium hydroxide rich waste residuals, for use in the manufacture of hydraulic binders, comprising heating the residuals to remove water and oxidise organic material contained therein, comprising controlling the temperature of the residuals during heating such that they are heated to a temperature no higher than 800° C., more preferably no higher than 650° C., to ensure that aluminium compounds in the WTR, in particular aluminium oxide and aluminium hydroxide, remain in an amorphous state. The method may comprise controlling the temperature of the water treatment residuals such that they are heated to a temperature between 350° C. and 650° C., more preferably between 400° C. and 500° C.

3. 发明授权

US10358355B2 Aluminum hydroxide coagulant recovery from water/wastewater treatment sludge 有权
公开(公告)号：US10358355B2
公开(公告)日：2019-07-23
申请号：US15841533
申请日：2017-12-14
申请人： American Air Liquide, Inc.
发明人： Rovshan Mahmudov , Sylvester Zuttah
IPC分类号： C01F7/00 , C01F7/46 , C02F11/14 , C02F1/52
摘要： A method for recovery of aluminum hydroxide Al(OH)3 from an aluminum enriched water/wastewater treatment sludge is disclosed. The method includes the steps of: adding a hydrated lime slurry to the aluminum enriched water/wastewater treatment sludge to form an alkaline sludge; adding sodium carbonate Na2CO3 to the alkaline sludge to form a Na2CO3 treated sludge; forming a first supernatant from the Na2CO3 treated sludge of step b) containing NaAl(OH)4; introducing CO2 to the first supernatant to form a precipitate of Al(OH)3 and a second supernatant containing NaHCO3; and recycling at least a portion of the NaHCO3 from the second supernatant back to the alkaline sludge of step a).

4. 发明授权

US09944534B2 Reducing aluminosilicate scale in the Bayer process 有权
公开(公告)号：US09944534B2
公开(公告)日：2018-04-17
申请号：US15346106
申请日：2016-11-08
申请人： Nalco Company
发明人： Everett C. Phillips , Timothy La , Kailas B. Sawant
IPC分类号： C01F7/02 , C01F7/06 , C01F7/47 , C01F7/46 , C02F5/12 , C07F7/02 , C02F103/16
CPC分类号： C01F7/0633 , C01F7/0606 , C01F7/46 , C01F7/47 , C02F5/12 , C02F2103/16 , C07F7/025
摘要： The invention provides a method of inhibiting the accumulation of DSP scale in the liquor circuit of Bayer process equipment. The method includes adding one or more particular silane based small molecules to the liquor fluid circuit. These scale inhibitors reduce DSP scale formation and thereby increase fluid throughput, increase the amount of time Bayer process equipment can be operational and reduce the need for expensive and dangerous acid washes of Bayer process equipment. As a result, the invention provides a significant reduction in the total cost of operating a Bayer process.

5. 发明申请

US20150275331A1 Recovery of Molybdenum from Spent Petrochemical Catalysts 审中-公开
标题翻译：从废石化催化剂中回收钼
公开(公告)号：US20150275331A1
公开(公告)日：2015-10-01
申请号：US14225651
申请日：2014-03-26
申请人： Roberto Nunes Szente
发明人： Roberto Nunes Szente
IPC分类号： C22B34/34 , C22B4/00 , C01F7/46
CPC分类号： C22B34/345 , C01G39/02 , C01G41/02 , C01G49/02 , C01G51/04 , C01G53/04 , C22B4/005 , Y02P10/23
摘要： A process to recover molybdenum contained in spent petrochemical catalysts has been invented. The proposed process permits the recovery of molybdenum in the form of an alloy, which can also contain other elements, such as nickel, cobalt, tungsten, iron and others. The process starts with a calcining operation for removal of hydrocarbons initially present in the spent catalysts, as well as to oxidize molybdenum and eventual other metal elements, such as nickel, cobalt, tungsten, iron; the calcined material is then fed into a plasma reactor, where molybdenum is recovered in an alloy formed with the other possible elements; the metal alloy can be readily commercialized. Besides recovering molybdenum, the plasma process also generates inert ceramic byproducts, containing alumina, silica and fluxing agents, such as lime. The process is clean and can be used for continuous operation, treating several types of materials, particularly spent catalysts, containing molybdenum or similar elements.
摘要翻译：已经发明了一种回收废石化催化剂中所含钼的方法。所提出的方法允许以合金形式回收钼，其也可以含有其它元素，例如镍，钴，钨，铁等。该过程开始于用于除去最初存在于废催化剂中的烃的煅烧操作，以及氧化钼和最终的其它金属元素，例如镍，钴，钨，铁; 然后将煅烧的材料进料到等离子体反应器中，其中钼与其它可能元素形成的合金中回收; 金属合金可以容易商业化。除了回收钼之外，等离子体工艺还产生惰性陶瓷副产物，其含有氧化铝，二氧化硅和助熔剂，例如石灰。该方法是干净的，可用于连续操作，处理几种类型的材料，特别是含有钼或类似元素的废催化剂。

6. 发明授权

US6123848A Ultrafiltration method for purifying water-insoluble aluminum hydrates 失效
标题翻译：用于净化水不溶性水合铝的超滤方法
公开(公告)号：US6123848A
公开(公告)日：2000-09-26
申请号：US11321
申请日：1998-02-12
申请人： Rosa Isabel Quepons Dominguez , Lance Eugene Solter , Danny Thomas Lauff , John David Mitchell , Edward Charles Jantosik, Jr. , David Carl Woodward
发明人： Rosa Isabel Quepons Dominguez , Lance Eugene Solter , Danny Thomas Lauff , John David Mitchell , Edward Charles Jantosik, Jr. , David Carl Woodward
IPC分类号： B01D61/14 , B01D61/16 , B01D61/22 , B01D63/16 , C01F7/46 , C09B57/00 , C09B67/54
CPC分类号： B01D61/145 , B01D61/16 , B01D61/22 , B01D63/16 , C01F7/46 , C09B57/00 , C09B67/0096
摘要： A process and apparatus for purifying water-insoluble particles is disclosed. The process comprises the steps of continuously recirculating a fluid aqueous suspension of the water-insoluble particles between a filtration system and a suspension reservoir; continuously conducting ultrafiltration of the recirculating suspension at the filtration system to separate an aqueous permeate containing the water-soluble impurities from the recirculating fluid aqueous suspension; continuously discharging the permeate generated by ultrafiltration; adding water to the recirculating fluid aqueous suspension undergoing ultrafiltration at approximately the same volumetric rate per hour as permeate is being discharged; monitoring the purity of the recirculating fluid aqueous suspension; and recovering the purified fluid aqueous suspension after the recirculating fluid aqueous suspension has reached a predetermined purity condition. An apparatus is also disclosed for carrying out the above process. Preferred water-insoluble particles may include lakes (particles with absorbed dye) and particles used to make lakes such as finely divided aluminum hydrate. Advantages of this invention include the ability to consistently produce high purity water-insoluble particles at low cost and with savings in manual labor. Purification according to this invention requires substantially less water than prior art methods, reducing purified water consumption and waste product disposal costs.
摘要翻译： PCT No.PCT / US97 / 13237 Sec。 371日期1998年2月12日 102（e）1998年2月12日PCT PCT 1997年7月25日PCT公布。公开号WO98 / 35746 日本1998年8月20日公开了一种净化水不溶性颗粒的方法和装置。该方法包括以下步骤：在过滤系统和悬浮液储存器之间连续循环水不溶性颗粒的流体水悬浮液; 在过滤系统上连续进行再循环悬浮液的超滤，以将含有水溶性杂质的含水渗透物与再循环流体水悬浮液分离; 连续排放超滤产生的渗透物; 向正在排出的渗透物以与每小时几乎相同的体积速率进行超滤的循环流体水性悬浮液中加入水; 监测循环流体水性悬浮液的纯度; 并在循环流体水悬浮液达到预定纯度条件之后回收纯化的流体水性悬浮液。还公开了一种用于执行上述过程的装置。优选的水不溶性颗粒可以包括湖泊（具有吸收的染料的颗粒）和用于制备诸如细分的水合铝的湖泊的颗粒。本发明的优点包括能够以低成本持续生产高纯度水不溶性颗粒并节省人工劳动的能力。根据本发明的纯化需要比现有技术方法少得多的水，减少纯化水的消耗和废弃的产品处理成本。

7. 发明授权

US5360778A High surface purity heat transfer solids for high temperature fluidized bed reactions 失效
标题翻译：高表面纯度的传热固体用于高温流化床反应
公开(公告)号：US5360778A
公开(公告)日：1994-11-01
申请号：US60378
申请日：1993-05-11
申请人： Stephen M. Davis , LeRoy R. Clavenna , Geoffrey R. Say , Rocco A. Fiato
发明人： Stephen M. Davis , LeRoy R. Clavenna , Geoffrey R. Say , Rocco A. Fiato
IPC分类号： B01J8/00 , C01B3/44 , C01B13/14 , C01F7/02 , C01F7/46 , B01J20/02 , B01J20/30 , B01J21/02
CPC分类号： C01B3/44 , B01J8/008 , C01B13/145 , C01F7/02 , C01F7/46 , C01P2002/85 , C01P2004/50 , C01P2004/61 , C01P2006/80 , Y02P20/52
摘要： High surface purity heat transfer solids are formed, suitably by washing and treating particulate refractory inorganic solids, notably alumina, which contains as impurities up to about 0.5 wt. % silicon and/or up to about 500 wppm boron, with an acid, or dilute acid solution sufficient to reduce the concentration of silicon and boron in the outer peripheral surface layer of the particles, e.g., as measured inwardly toward the center of a particle to a depth of about 50 .ANG. using X-ray photoelectron spectroscopy, to no greater than about 5 atom percent silicon and boron, preferably about 2 atom percent silicon and boron, based on the total number of cations within said outer peripheral surface layer, thereby reducing the tendency of said particles to sinter and agglomerate in the conversion of said hydrocarbon to hydrogen and carbon monoxide in a fluidized bed synthesis gas operation vis-a-vis particles otherwise similar except that the particles are not treated with the acid. The tendency of the particles to sinter and agglomerate is further reduced by the additional removal of sodium, iron, calcium, and titanium impurities from the outer peripheral surface layer of the particles. Preferably the latter named impurities, or impurities other than silicon and boron, are reduced to a concentration below about 20 atom %, more preferably to a concentration below about 15 atom %, in the outer surface layer of the particles.
摘要翻译：适当地通过洗涤和处理颗粒耐火无机固体，特别是氧化铝来形成高表面纯度的热传递固体，其含有高达约0.5wt。％硅和/或高达约500wppm的硼，与酸或稀酸溶液相比足以降低颗粒外周表面层中硅和硼的浓度，例如向内朝向颗粒中心测量基于所述外周表面层中的阳离子总数，使用X射线光电子能谱测量至约50AHZ的深度，不大于约5原子％的硅和硼，优选约2原子％的硅和硼，由此降低了所述颗粒在流化床合成气操作中将所述烃转化为氢气和一氧化碳的过程中所述颗粒烧结和附聚的倾向，除了颗粒不用酸处理之外，颗粒否则相似。通过从颗粒的外周表面层另外去除钠，铁，钙和钛杂质，进一步降低了颗粒烧结和附聚的倾向。优选地，后者称为杂质或除了硅和硼之外的杂质，在颗粒的外表面层中被还原成低于约20原子％，更优选低于约15原子％的浓度。

8. 发明授权

US4989794A Method of producing fine particles 失效
标题翻译：微粒生产方法
公开(公告)号：US4989794A
公开(公告)日：1991-02-05
申请号：US470641
申请日：1990-01-26
申请人： Herbert F. Askew , Stephen C. Brown
发明人： Herbert F. Askew , Stephen C. Brown
IPC分类号： A62D1/00 , B02C21/00 , B02C23/12 , B02C23/36 , C01F7/02 , C01F7/46 , C09C1/40
CPC分类号： C09C1/407 , A62D1/0014 , B02C21/00 , B02C23/12 , B02C23/36 , C01F7/023 , C01F7/46 , C01P2004/52 , C01P2004/61 , C01P2004/62 , C01P2006/12
摘要： A method of reducing the particle size of solid particles is applicable to the production of very fine particles of a wide variety of solids, including alumina hydrate, and comprises milling a liquid suspension of solid particles in an agitated media mill, pumping the milled suspension through a particle size classification device to separate the slurry into a coarse fraction and a fine fraction, the particles of the coarse fraction having a greater median particle size than the particles of the fine fraction, recycling the coarse fraction from the particle size classification device to the input of the mill, and recyling the fine fraction by pumping it to the classification device, wherein recycling of both coarse and fine fractions are continued until solid particles of the desired reduced particle size are produced. Preferably a single classification device and a single mill can be used, and particles having a median particle size of 0.3 microns or less and a relatively narrow particle size distribution can be produced, even using a hydrocyclone as the classification device.
摘要翻译：降低固体颗粒的粒度的方法适用于生产包括氧化铝水合物在内的各种固体的非常细小的颗粒，并且包括在搅拌介质研磨机中研磨固体颗粒的液体悬浮液，将经研磨的悬浮液通过将浆料分离成粗级分和细级分的粒度分级装置，粗级分的颗粒具有比细级分颗粒更大的中值粒径，将粗级分从粒度分级装置再循环到粉碎机的输入，并通过将其分送到分级装置来重新生成细小部分，其中继续粗级和细分级的再循环，直到产生所需还原粒径的固体颗粒。优选地，可以使用单一分级装置和单一磨机，并且即使使用水力旋流器作为分级装置，也可以产生具有0.3微米或更小的中值粒径和相对窄的粒度分布的颗粒。

9. 发明授权

US4560541A Production of low silica content, high purity alumina 失效
标题翻译：生产低二氧化硅含量，高纯氧化铝
公开(公告)号：US4560541A
公开(公告)日：1985-12-24
申请号：US589927
申请日：1984-03-15
申请人： Gerald E. Davis
发明人： Gerald E. Davis
IPC分类号： C01F7/30 , C01F7/46 , C01F7/47 , C01F7/56 , C01F7/62 , C01F7/22
CPC分类号： C01F7/56 , C01F7/47 , C01P2006/80
摘要： A process is described for the formation of high purity alumina from aluminas such as Bayer Process alumina trihydrate (gibbsite) which contain both acid-soluble and -insoluble impurities, notably soda and silica. The solid hydrated alumina is reacted with a stoichiometric quantity of concentrated HCl to form a reaction product comprising of dissolved aluminum chloride and solid aluminum chloride hexahydrate (ACH). The acid and/or aluminum chloride concentration of the solution is then adjusted (as by water addition) to dissolve the solid ACH and form a solution at or near saturation in aluminum chloride, but with the remaining solid materials undissolved. The solution is then subjected to solid/liquid separation to eliminate the insoluble impurities, such as silica. Thereafter, the concentration is again adjusted to cause the ACH to crystallize and precipitate preferentially to the soluble impurities, following which the ACH is recovered as a solid and calcined in a single or multistage calcination to high purity alumina. The purified products find use in the specialty ceramics field, as synthetic sapphire, translucent tubing or other applications in which alumina must meet SPA specifications.
摘要翻译：描述了从氧化铝形成高纯度氧化铝的方法，例如含有酸溶性和不溶性杂质（特别是苏打和二氧化硅）的拜耳法三氧化三铝（三水铝矿）。将固体水合氧化铝与化学计量的浓HCl反应以形成包含溶解的氯化铝和固体氯化铝六水合物（ACH）的反应产物。然后调节溶液的酸和/或氯化铝浓度（如通过加水）以溶解固体ACH并在氯化铝中或接近饱和状态形成溶液，但剩余的固体物质未溶解。然后将溶液进行固/液分离以消除不溶性杂质，例如二氧化硅。此后，再次调节浓度使ACH结晶并优先析出为可溶性杂质，随后将ACH作为固体回收，并在单次或多次煅烧中煅烧成高纯度氧化铝。纯化产品可用于专业陶瓷领域，如合成蓝宝石，半透明管材或氧化铝必须符合SPA规格的其他应用。

10. 发明授权

US4474736A Treatment of aluminous materials 失效
标题翻译：铝材料的处理
公开(公告)号：US4474736A
公开(公告)日：1984-10-02
申请号：US370035
申请日：1982-04-20
申请人： William H. Andrews , David J. Milne , Ronald W. Moyle , James P. Peters
发明人： William H. Andrews , David J. Milne , Ronald W. Moyle , James P. Peters
IPC分类号： C01F7/22 , C01F7/30 , C01F7/46 , C01F7/56 , C04B35/101
CPC分类号： C01F7/22 , C01F7/306 , C01F7/56
摘要： A leaching process employing acidic chloride solutions, whereby the iron content of aluminous materials such as lower grade iron-containing bauxite ores is reduced, enabling the obtention of valuable products such as metallurgical grade alumina and refractory grade bauxite, previously obtainable only from higher grade low-iron aluminous materials.
摘要翻译：使用酸性氯化物溶液的浸出方法，由此降低了含铝材料如低含量的含铝铝土矿的铁含量，从而能够获得先前仅从较高等级的低级别获得的有价值的产品如冶金级氧化铝和耐火级铝土矿铁铝材料。

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