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11. 发明授权

US4434142A Method for treatment of aluminum dross oxides 失效
标题翻译：铝浮渣氧化物处理方法
公开(公告)号：US4434142A
公开(公告)日：1984-02-28
申请号：US426200
申请日：1982-09-28
申请人： John A. Huckabay
发明人： John A. Huckabay
IPC分类号： C01F7/02 , C01F7/46
CPC分类号： C01F7/46 , C01F7/021 , C01P2004/50
摘要： There is disclosed a method for the treatment of aluminum dross oxides which contain aluminum metal, aluminum carbide, aluminum nitride and salts such as potassium and sodium chloride. The method comprises the thermal treatment of an aqueous suspension of the dross oxides with agitation in the presence of a particulate grinding medium. The method is practiced in a stirred reactor vessel which contains a bed of refractory, ceramic balls that are agitated with a slurry to provide a sufficient abrading action on the aluminum metal particles to remove the aluminum hydroxide coating and continually expose the aluminum metal for reaction with the water. This invention comprises the introduction of a purge gas into the suspension, preferably air, during its thermal treatment to reduce the formation of foam during the treatment and to assist in liberation of ammonia formed by the decomposition of the aluminum nitride.
摘要翻译：公开了一种处理包含铝金属，碳化铝，氮化铝和盐如氯化钾和氯化钠的铝渣的氧化物的方法。该方法包括在颗粒研磨介质的存在下搅拌，热处理浮渣氧化物的水悬浮液。该方法在搅拌的反应器容器中实施，该容器包含耐火材料床，陶瓷球用浆料搅拌以对铝金属颗粒提供足够的研磨作用以除去氢氧化铝涂层并连续暴露铝金属以与水。本发明包括在其热处理期间将吹扫气体引入悬浮液，优选空气中，以减少处理过程中泡沫的形成并帮助释放由氮化铝分解形成的氨。

12. 发明授权

US4275043A Removal of oxalate from bayer process liquor 失效
标题翻译：从拜耳处理液中除去草酸盐
公开(公告)号：US4275043A
公开(公告)日：1981-06-23
申请号：US114286
申请日：1980-01-22
申请人： Bohdan Gnyra
发明人： Bohdan Gnyra
IPC分类号： C01F7/47 , C01F7/06 , C01F7/46
CPC分类号： C01F7/473
摘要： Sodium oxalate is supersaturated solution in Bayer spent liquor stabilized by the presence of humic material is precipitated by the treatment with an adsorbent which adsorbs the humic material to give an insoluble product, thus removing it from solution and destabilizing the solution with respect to precipitation of sodium oxalate. The preferred adsorbent is activated carbon. The activated carbon can be dispersed in the spent liquor as a fine powder or the spent liquor can be passed through a column of particulate carbon. Precipitation of sodium oxalate can be expidited by addition to seed crystals and/or addition of sodium oxalate solution which is supersaturated at a temperature higher than that of the spent liquor.
摘要翻译：草酸钠是过饱和溶液，通过腐殖质存在而稳定的拜耳废液中，通过用吸附腐殖质的吸附剂进行沉淀，得到不溶性产物，从而从溶液中除去溶液并使溶液不稳定草酸盐。优选的吸附剂是活性炭。活性炭可以作为细粉末分散在废液中，或者废料可以通过颗粒碳柱。草酸钠的沉淀可以通过加入晶种和/或在高于废液的温度下过饱和的草酸钠溶液的添加来消除。

13. 发明授权

US4116882A Method for the formation of alumina spheres 失效
标题翻译：氧化铝球形成方法
公开(公告)号：US4116882A
公开(公告)日：1978-09-26
申请号：US860369
申请日：1977-12-14
申请人： Larry L. Bendig , Cathy S. Siemsen , Donald E. Stowell
发明人： Larry L. Bendig , Cathy S. Siemsen , Donald E. Stowell
IPC分类号： B01J21/04 , B01J21/14 , B01J35/08 , B01J37/00 , C01F7/36 , C01F7/46
CPC分类号： C01F7/46 , B01J21/04 , B01J21/14 , B01J35/08 , B01J37/00 , C01F7/36 , C01P2004/32 , C01P2006/14 , C01P2006/16 , Y10S502/503
摘要： Alumina spheres are formed by peptizing alumina slurries, centrifugates, and filtercakes, aging and dropping the peptized material through a hydrocarbon filled column. The improved method avoids the drying and reslurrying of alumina powders currently used and provides a method whereby harmful ions such as chloride and sulfates can be excluded from the alumina.
摘要翻译：通过将氧化铝浆料，离心液和滤饼胶化，通过填充烃的柱来老化和滴加胶溶材料来形成氧化铝球体。改进的方法避免了目前使用的氧化铝粉末的干燥和再浆化，并且提供了可以从氧化铝中排除有害离子如氯化物和硫酸盐的方法。

14. 发明授权

US4075284A Process for the removal of sulfur oxides by the use of activated alumina 失效
标题翻译：通过使用活性氧化铝除去硫氧化物的方法
公开(公告)号：US4075284A
公开(公告)日：1978-02-21
申请号：US653260
申请日：1976-01-28
申请人： Arthur F. Johnson
发明人： Arthur F. Johnson
IPC分类号： B01J20/08 , C01F7/46 , C22B7/04 , C01B17/00 , B01J8/00 , C01B17/48 , C01C3/00
CPC分类号： B01J20/08 , C01F7/46 , C22B7/04 , Y02P10/212
摘要： Production of an activated type alumina from aluminum dross by digestion with water, preferably pressurized. The peculiar properties associated with trace compounds present in the product make it useful for the recovery of noxious effluents from furnacing processes, including those burning fossil fuels and those used for smelting both aluminum and steel, wherein the alumina beneficially incorporates in the metallurgical flux.
摘要翻译：通过用水消解从铝浮渣生产活性氧化铝，优选加压。与产品中存在的痕量化合物相关的特殊性质使其有助于从加热过程（包括燃烧化石燃料和用于冶炼铝和钢的那些）中回收有害废水，其中氧化铝有利地掺入冶金助熔剂中。

15. 发明授权

US4046855A Method for removing harmful organic compounds from aluminate liquors of the Bayer process 失效
标题翻译：从拜耳法的铝酸盐液中除去有害有机化合物的方法
公开(公告)号：US4046855A
公开(公告)日：1977-09-06
申请号：US676883
申请日：1976-04-14
申请人： Bernhard Schepers , Gerhard Bayer , Ernst Urmann , Klaus Schanz
发明人： Bernhard Schepers , Gerhard Bayer , Ernst Urmann , Klaus Schanz
IPC分类号： C01F7/14 , C01F7/47 , C01F7/00 , C01F7/46
CPC分类号： C01F7/473
摘要： A method is provided for removing harmful organic compounds from the aluminate liquor obtained in the production of alumina according to the Bayer process. A magnesium obtained is added to the aluminate liquor to form a hydroxide mixture containing magnesium hydroxide and aluminum hydroxide which precipitates from the aluminate liquor. The precipitated mixture is maintained in the aluminate liquor, while being stirred, until at least a part of the organic compounds have been eliminated from the aluminate liquor. The hydroxide mixture containing the organic compounds then is separated from the aluminate liquor.
摘要翻译：提供了一种根据拜耳法从氧化铝生产中获得的铝酸盐溶液中除去有害有机化合物的方法。将获得的镁加入到铝酸盐溶液中以形成氢氧化铝混合物，其中含有从铝酸盐液中析出的氢氧化镁和氢氧化铝。将沉淀的混合物在搅拌下保持在铝酸盐溶液中，直到至少一部分有机化合物已从铝酸盐液体中除去。然后将含有有机化合物的氢氧化物混合物与铝酸盐液体分离。

16. 发明授权

US3981979A Process for producing a pure high surface area alumina 失效
标题翻译：用于生产纯高表面积氧化铝的方法
公开(公告)号：US3981979A
公开(公告)日：1976-09-21
申请号：US584783
申请日：1975-06-06
申请人： David G. Braithwaite , Virgil L. Seale
发明人： David G. Braithwaite , Virgil L. Seale
IPC分类号： C01F7/02 , C01F7/34 , C01F7/46
CPC分类号： C01F7/34 , C01F7/02 , C01F7/46 , C01P2006/12 , C01P2006/14 , C01P2006/80
摘要： Pure, high surface area alumina is produced by the reaction of aluminum salts with lower aliphatic epoxides in an aqueous media and is washed with aqueous solutions of ammonia which have a pH of at least 7.
摘要翻译：纯的，高表面积的氧化铝是通过铝盐与低级脂族环氧化物在水性介质中的反应产生的，并用pH至少为7的氨水溶液洗涤。

17. 发明授权

US3839536A Process for preparing pure hydrated alumina 失效
标题翻译：制备纯水氢氧化铝的方法
公开(公告)号：US3839536A
公开(公告)日：1974-10-01
申请号：US16483271
申请日：1971-07-21
申请人： MITSUBISHI CHEM IND
发明人： SATO S , OTAKA Y , MORI K
IPC分类号： C01F7/14 , C01F7/44 , C01F7/46
CPC分类号： C01F7/142 , C01F7/448 , C01P2004/61 , C01P2006/12 , C01P2006/14 , C01P2006/16
摘要： 1. A PROCESS FOR PREPARING A HYDRATED ALUMINA, WHICH COMPRISES: FORMING A SLURRY OF BAYERITE BY CHARGING CARBON DIOXIDE INTO AN AQUEOUS SOLUTION OF SODIUM ALUMINATE; WASHING THE PARTICLES OF SAID SLURRY WITH WATER INTIL A PH OF 12 OR LESS IS OBTAINED; HEATING SAID SLURRY AT A TEMPERATURE OF 100*-300*C. WHILE UNDER A GAUGE PRESSURE OF CO2 OF 10-20 KG./ CM.2 WHICH IS SUFFICIENT TO ELUTE THE SODIUM COMPONENT; AND THEREAFRER SEPARATING HYDRATED ALUMINA FROM THE SLURRY.

18. 发明授权

US3773691A Removal of residual carbon contaminates from alumina 失效
标题翻译：从铝中去除残留的碳污染物
公开(公告)号：US3773691A
公开(公告)日：1973-11-20
申请号：US3773691D
申请日：1971-12-23
申请人： CONTINENTAL OIL CO
发明人： LEACH B
IPC分类号： B01J21/04 , B01J35/10 , B01J37/10 , C01F7/02 , C01F7/46 , C04B35/10 , B01J11/32
CPC分类号： C01F7/46 , B01J21/04 , B01J35/10 , B01J35/1019 , B01J35/1047 , B01J37/10 , C01F7/02 , C01P2006/11 , C01P2006/12 , C01P2006/13 , C01P2006/14 , C04B35/10
摘要： An improved process for producing low bulk density, high porosity, high surface area alumina having a low residual carbon contamination content wherein the improvement comprises contacting said alumina with super heated steam to reduce the residual carbon contamination content.

19. 发明授权

US3473919A Process for separating iron from aluminum 失效
标题翻译：从铝分离铁的工艺
公开(公告)号：US3473919A
公开(公告)日：1969-10-21
申请号：US3473919D
申请日：1967-06-05
申请人： ARMOUR IND CHEM CO
发明人： METCALFE LINCOLN DOUGLAS , PELKA JOHN RICHARD
IPC分类号： C01G49/00 , C01F7/46 , C07F15/02
CPC分类号： C01G49/0009

20. 发明授权

US3083093A Process for eliminating titanium from products obtained by the carbothermic reduction of aluminum ores 失效
标题翻译：通过铝矿石碳热还原得到的产品中的钛的脱除方法
公开(公告)号：US3083093A
公开(公告)日：1963-03-26
申请号：US79835159
申请日：1959-03-10
申请人： PECHINEY PROD CHIMIQUES SA
发明人： ERHARD GRUNERT
IPC分类号： C01F7/46
CPC分类号： C01F7/46

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