专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明授权

US06391277B1 Bayer process for production of alumina trihydrate 失效
标题翻译：拜耳法生产三水合氧化铝
公开(公告)号：US06391277B1
公开(公告)日：2002-05-21
申请号：US09529402
申请日：2000-07-05
申请人： Bassam El Kadi , Philippe Clerin
发明人： Bassam El Kadi , Philippe Clerin
IPC分类号： C01F700
CPC分类号： C01F7/144
摘要： An improvement in the Bayer process for producing alumina trihydrate in which bauxite ore is digested in a mixture with a digestion sodium aluminate liquor to produce a slurry, the slurry is settled to remove undigested residues therefrom and produce a pregnant liquor of sodium aluminate and alumina trihydrate is precipitated from the pregnant liquor in the presence of alumina trihydrate recycled as seed. When beginning the precipitation, an aliquot of the pregnant liquor with recycled alumina trihydrate is removed, subjected to mechanical action of an intensity and for a time sufficient to cause formation of seeds, and returned with the formed seeds to the beginning of the precipitation.
摘要翻译：用于生产氧化铝三水合物的拜耳方法的改进，其中铝酸铝矿石在与消化铝酸钠液体的混合物中消化以产生浆料，淤浆沉降以除去未消化的残余物，并产生铝酸钠和三水合氧化铝在作为种子再循环的三水合氧化铝的存在下从怀疑液体中沉淀出来。当开始沉淀时，除去具有再循环氧化铝三水合物的怀孕液体的等分试样，经受强度的机械作用并持续一段足以引起种子形成的时间，并且用形成的种子返回到沉淀开始。

12. 发明授权

US06299846B1 Process for producing aluminum hydroxide from alumina-containing ore 有权
标题翻译：从含氧化铝的矿石生产氢氧化铝的方法
公开(公告)号：US06299846B1
公开(公告)日：2001-10-09
申请号：US09440043
申请日：1999-11-15
申请人： Takuo Harato , Toru Ogawa , Takahiro Ishida
发明人： Takuo Harato , Toru Ogawa , Takahiro Ishida
IPC分类号： C01F700
CPC分类号： C01F7/062
摘要： The present invention provides a process for producing aluminum hydroxide with little contamination by silica at a high yield, while suppressing losses of consumed alumina and alkaline components. The process comprises the steps of mixing a first alumina-containing slurry with a preheated alkaline aqueous solution, extracting alumina from the mixture, separating a dissolution residue from the mixture to obtain a solution, mixing the solution with a second alumina-containing slurry, extracting alumina from the mixture, and precipitating aluminum hydroxide after a desilication treatment.
摘要翻译：本发明提供一种以高产率生产二氧化硅污染少的氢氧化铝的方法，同时抑制消耗的氧化铝和碱性组分的损失。该方法包括以下步骤：将第一含氧化铝的浆料与预热的碱性水溶液混合，从混合物中提取氧化铝，从混合物中分离出溶解残余物，得到溶液，将溶液与第二含氧化铝的浆料混合，氧化铝，脱硅处理后析出氢氧化铝。

13. 发明授权

US06827923B1 Process for the production of aluminum hydroxide of improved whiteness 有权
标题翻译：用于生产改善白度的氢氧化铝的方法
公开(公告)号：US06827923B1
公开(公告)日：2004-12-07
申请号：US10110301
申请日：2002-06-04
申请人： Neil Brown
发明人： Neil Brown
IPC分类号： C01F700
CPC分类号： C01F7/46 , C01P2004/61 , C01P2006/12 , C01P2006/22 , C01P2006/62 , C09C1/407
摘要： Aluminium hydroxide of high whiteness is produced by (i) heating aluminium hydroxide obtained from the Bayer process to a temperature of 300 to 700° C. (ii) dissolving the soluble fraction of the thus obtained activated product at 85 to 275° C. in aqueous sodium hydroxide to form a sodium aluminate liquor containing an undissolved residue of very fine boehmite, (iii) filtering said sodium aluminate liquor to obtain a clear solution of sodium aluminate supersaturated with respect to dissolved alumina, (iv) cooling said clear solution to 50 to 80° C. and seeding with crystallized aluminium hydroxide to induce further crystallization, and (v) separating, washing and drying the produced aluminium hydroxide crystals.
摘要翻译：通过（i）将从拜耳法得到的氢氧化铝加热至300〜700℃的温度，生成高白度的氢氧化铝。（ii）将由此得到的活性成分的可溶成分在85〜275℃下溶解，氢氧化钠水溶液以形成含有非常细勃姆石的未溶解残余物的铝酸钠液体，（iii）过滤所述铝酸钠溶液以获得相对于溶解的氧化铝过饱和的铝酸钠的澄清溶液，（iv）将所述澄清溶液冷却至50 至80℃，并用结晶的氢氧化铝接种以进一步结晶，和（v）分离，洗涤和干燥所生产的氢氧化铝晶体。

14. 发明授权

US06800264B1 Process for stabilizing aqueous aluminate and zirconate solutions 有权
标题翻译：稳定铝酸水溶液和锆酸盐溶液的方法
公开(公告)号：US06800264B1
公开(公告)日：2004-10-05
申请号：US10123700
申请日：2002-04-16
申请人： Timothy Edward Askew , Jasbir Singh Kumar , Brain Thomas Lenkowski , Matthew Allen Franczak
发明人： Timothy Edward Askew , Jasbir Singh Kumar , Brain Thomas Lenkowski , Matthew Allen Franczak
IPC分类号： C01F700
CPC分类号： C01G25/00 , C01F7/046
摘要： Use of alkali metal carbonates to stabilize aqueous solutions of alkali metal aluminates.
摘要翻译：使用碱金属碳酸盐来稳定碱金属铝酸盐水溶液。

15. 发明授权

US06773690B1 Boehmitic aluminas, and high-temperature stabile and highly porous aluminum oxides in a pure phase which are obtained therefrom 有权
标题翻译：沸石氧化铝，以及从其获得的纯相中的高温稳定性和高度多孔的氧化铝
公开(公告)号：US06773690B1
公开(公告)日：2004-08-10
申请号：US09529484
申请日：2000-06-09
申请人： Klaus Noweck , Jürgen Schimanski , Jens Juhl , Frank Michael Bohnen , Reiner Glöckler , Arnold Meyer
发明人： Klaus Noweck , Jürgen Schimanski , Jens Juhl , Frank Michael Bohnen , Reiner Glöckler , Arnold Meyer
IPC分类号： C01F700
CPC分类号： C01F7/02 , B01J21/04 , C01F7/441 , C01F7/447 , C01F7/448 , C01P2002/60 , C01P2002/70 , C01P2002/72 , C01P2006/12 , C01P2006/14 , C01P2006/16 , C01P2006/17 , Y10T428/2982
摘要： This invention relates to crystalline boehmitic aluminas the crystallites of which exhibit unusual dimensional differences in the space directions 020 and 120. This invention further relates to a method for preparing such aluminas and the follow-up products obtained therefrom by calcination.
摘要翻译：本发明涉及晶体波形氧化铝，其微晶在空间方向020和120上表现出异常的尺寸差异。本发明还涉及一种制备这种氧化铝的方法及其通过煅烧获得的后续产物。

16. 发明授权

US06599489B2 Aluminum trihydrate crystals and improved method for the production thereof 失效
标题翻译：三水合铝晶体及其制备方法
公开(公告)号：US06599489B2
公开(公告)日：2003-07-29
申请号：US09824137
申请日：2001-04-02
申请人： Robert P. Mahoney , William B. Schnieders, Jr.
发明人： Robert P. Mahoney , William B. Schnieders, Jr.
IPC分类号： C01F700
CPC分类号： C01F7/145
摘要： The present invention provides an improved process for the production of alumina trihydrate crystals. Through the addition of a hydroxamated polymer at various stages of the process for production of these alumina trihydrate crystals, an upward shift in the particle size distribution of the alumina trihydrate crystals occurs. In one embodiment, the hydroxamated polymer is added to a filtered aqueous solution, which comprises no more than about 10 mg of insoluble solids per liter. In another embodiment, the hydroxamated polymer is added to an aqueous solution comprising insoluble solids after precipitation of alumina trihydrate crystals has commenced. Optionally, alumina trihydrate seed crystals may be added to the aqueous solution to initiate or encourage crystal formation.
摘要翻译：本发明提供了制备三水合氧化铝晶体的改进方法。通过在生产这些三水合氧化铝晶体的方法的各个阶段添加异羟肟酸聚合物，发生三水合氧化铝晶体的粒度分布向上移动。在一个实施方案中，将异羟肟化聚合物加入到过滤的水溶液中，每升不超过约10mg不溶固体。在另一个实施方案中，在开始沉淀三水合氧化铝晶体之后，将异羟肟酰聚合物加入到包含不溶性固体的水溶液中。任选地，可将三水合氧化铝晶种加入到水溶液中以引发或促进晶体形成。

17. 发明授权

US06340454B1 &agr;-Lithium aluminate and method of manufacturing the same, and electrolyte support material of molten carbonate fuel cell 有权
标题翻译：铝酸锂及其制造方法，以及熔融碳酸盐燃料电池的电解质支撑材料
公开(公告)号：US06340454B1
公开(公告)日：2002-01-22
申请号：US09472830
申请日：1999-12-28
申请人： Yasuhiro Nakaoka , Nobuyuki Yamazaki , Takenori Watanabe
发明人： Yasuhiro Nakaoka , Nobuyuki Yamazaki , Takenori Watanabe
IPC分类号： C01F700
CPC分类号： C01F7/043 , C01P2004/30 , C01P2006/12 , H01M8/142 , H01M2008/147 , Y02E60/526 , Y02P70/56
摘要： An &agr;-lithium aluminate obtained through a solid-phase reaction of a &ggr;-alumina and a lithium compound, wherein said &agr;-lithium aluminate comprises particles having a round shape, with a BET specific surface area in the range of 4-7 m2/g, and substantially not including &ggr;-lithium aluminate. Further, said &agr;-lithium aluminate is manufactured by dry-mixing a &ggr;-alumina having a BET specific surface area in the range of 70-140 m2/g and a lithium compound, and then baking and reacting said compound in solid-phase.
摘要翻译：通过γ-氧化铝和锂化合物的固相反应获得的铝酸锂铝，其中所述α-铝酸锂包括具有圆形形状的颗粒，BET比表面积在4-7m 2 / g，并且基本上不包括铝酸锂。此外，所述α-铝酸锂通过将具有70-140m 2 / g的BET比表面积的γ-氧化铝和锂化合物干混合，然后将所述化合物固相进行烘焙和反应来制造。

18. 发明授权

US06296817B1 Process for recycling waste aluminum dross 有权
标题翻译：回收废铝渣的工艺
公开(公告)号：US06296817B1
公开(公告)日：2001-10-02
申请号：US09404987
申请日：1999-09-22
申请人： Hyung-Kyu Park , Hoo-In Lee , Eui-Pak Yoon
发明人： Hyung-Kyu Park , Hoo-In Lee , Eui-Pak Yoon
IPC分类号： C01F700
CPC分类号： C04B33/138 , C01F7/0693 , C04B18/023 , C04B28/06 , C04B33/1328 , C04B35/62204 , C04B35/6303 , C04B35/66 , Y02P20/142 , Y02P40/69 , Y02W30/94 , C04B18/14
摘要： Disclosed is the recycling of aluminum dross. Aluminum dross is crushed into particles which are size-classified on the basis of 1 mm. The aluminum dross particles equal to or smaller than 1 mm in size are leached with an aqueous sodium hydroxide solution to give a leachate which contains sodium aluminate as a result of the reaction the aluminum metal of the aluminum dross particles with sodium hydroxide. The aluminum dross particles greater than 1 mm in size are remelted to recover aluminum metal. In the leachate, a small quantity of aluminum hydroxide is seeded, followed by hydrolyzing the sodium aluminate to obtain aluminum hydroxide. Meanwhile, the leachate is filtered to obtain a residue. This residue is subjected to washing, drying and roasting. The mixing of the roasted residue with aggregate and alumina cement gives alumina castable refractories. It is economically very advantageous in that aluminum dross is reused as a raw material for aluminum hydroxide and for alumina castable refractories, instead of being discarded. Also, hydrogen gas can be obtained as a by-product in the process of recycling.
摘要翻译：披露了铝渣的回收利用。铝渣被粉碎成基于1mm的尺寸分级的颗粒。使用氢氧化钠水溶液浸提等于或小于1mm的铝渣渣，由于铝渣与铝氢氧化物的反应而产生含有铝酸钠的浸出液。大于1mm的铝渣渣被重熔以回收铝金属。在渗滤液中，接种少量氢氧化铝，然后水解铝酸钠，得到氢氧化铝。同时，将渗滤液过滤以获得残留物。将该残余物进行洗涤，干燥和焙烧。焙烧的残渣与骨料和氧化铝水泥的混合产生氧化铝可浇铸的耐火材料。在经济上非常有利的是，铝渣被用作氢氧化铝和氧化铝可浇铸耐火材料的原料，而不是被丢弃。此外，在回收过程中可以获得作为副产物的氢气。

19. 发明授权

US06835367B2 Single step process for the synthesis of nanoparticles of ceramic oxide powders 有权
标题翻译：用于合成纳米陶瓷氧化物粉末的单步法
公开(公告)号：US06835367B2
公开(公告)日：2004-12-28
申请号：US10084860
申请日：2002-02-28
申请人： Jose James , Rajan Jose , Asha Mary John , Jacob Koshy
发明人： Jose James , Rajan Jose , Asha Mary John , Jacob Koshy
IPC分类号： C01F700
CPC分类号： B82Y30/00 , C01B13/324 , C01B33/18 , C01F7/308 , C01G25/00 , C01G25/006 , C01P2002/02 , C01P2002/72 , C01P2002/82 , C01P2004/50 , C01P2004/62 , C01P2004/64
摘要： The present invention relates to a single step process for the synthesis of nanoparticles of phase pure ceramic oxides of a single or a multi-component system comprising one or more metal ions. The process comprises preparing a solution containing all the required metal ions in stoichiometric ratio by dissolving their respective soluble salts in an organic solvent or in water, preparing a precursor, adjusting the nitrate/ammonia content in the system, and heating the system.
摘要翻译：本发明涉及用于合成包含一种或多种金属离子的单组分或多组分体系的相纯相陶瓷氧化物的纳米颗粒的单步方法。该方法包括通过将其各自的可溶性盐溶解在有机溶剂或水中制备含有所有所需金属离子的化学计量比的溶液，制备前体，调节体系中的硝酸盐/氨含量和加热系统。

20. 发明授权

US06652832B2 Synthesis of ZSM-12 有权
公开(公告)号：US06652832B2
公开(公告)日：2003-11-25
申请号：US10066514
申请日：2002-01-31
申请人： Andrzej Mariusz Malek
发明人： Andrzej Mariusz Malek
IPC分类号： C01F700
CPC分类号： B01J29/7034 , C01B39/42 , C07C4/18 , C07C6/12 , Y10S423/33
摘要： This invention provides a process for the synthesis of ZSM-12 using the N,N-dimethylhexamethyleneimine cation as a directing agent. The process enables ZSM-12 to be produced at silica/alumina molar ratios below 50 with little or no co-production of impurity phases. Small crystal forms of ZSM-12 can also be produced using the process of the invention.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式