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1. 发明授权

US4226838A Process for accelerating the digestion and sedimentation steps on the Bayer alumina process 失效
标题翻译：加速拜耳氧化铝工艺消化和沉淀步骤的方法
公开(公告)号：US4226838A
公开(公告)日：1980-10-07
申请号：US005996
申请日：1979-01-24
申请人： Jozsef Boros , Zsolt Csillag , Tibor Ferenczi , Tibor Kalman , Laszlo Lengyel , Jozsef Matyasi , Ferenc Orban , Karoly Solymar , Bela Toth , Lajos Toth , Istvan Voros , Kalman Wentzely , Janos Zambo , Jozsef Zoldi
发明人： Jozsef Boros , Zsolt Csillag , Tibor Ferenczi , Tibor Kalman , Laszlo Lengyel , Jozsef Matyasi , Ferenc Orban , Karoly Solymar , Bela Toth , Lajos Toth , Istvan Voros , Kalman Wentzely , Janos Zambo , Jozsef Zoldi
IPC分类号： C01G49/00 , B01J23/02 , B01J23/16 , B01J23/76 , C01B33/20 , C01B33/26 , C01F7/06 , C01F7/38
CPC分类号： C01B33/26 , B01J23/02 , B01J23/16 , B01J23/76 , C01B33/20 , C01F7/0633 , C01F7/38
摘要： An improved process for accelerating the digestion process in the Bayer alumina process is provided which promotes both the goethite-hematite conversion and a more perfect and quick dissolution of the diaspore. The above is achieved by carrying out the digestion in the process of 5-20% by weight calculated on the dry weight of the bauxite of a novel hydrogarnet catalyst.
摘要翻译：提供了一种用于加速拜耳氧化铝工艺中的消解过程的改进方法，其促进了针铁矿 - 赤铁矿转化和更完美和快速地溶解二水合物。上述通过在5-20重量％的过程中进行消化来实现，其按新型氢化催化剂的铝土矿的干重计算。

2. 发明授权

US4091071A Process for digesting goethite-containing bauxites according to the Bayer technology 失效
标题翻译：根据拜耳技术消化含有针铁矿的铝土矿的工艺
公开(公告)号：US4091071A
公开(公告)日：1978-05-23
申请号：US643670
申请日：1975-12-23
申请人： Jozsef Boros , Tibor Ferenczi , Gyula Horvath , Ferenc Lazar , Laszlo Lengyel , Jozsef Matyasi , Maria Orban nee Kelemen , Tihamer Pinter , Gyorgy Sigmond , Peter Siklosi , Karoly Solymar , Bela Toth , Istvan Voros , Kalman Wentzely , Janos Zambo , Jozsef Zoldi
发明人： Jozsef Boros , Tibor Ferenczi , Gyula Horvath , Ferenc Lazar , Laszlo Lengyel , Jozsef Matyasi , Maria Orban nee Kelemen , Tihamer Pinter , Gyorgy Sigmond , Peter Siklosi , Karoly Solymar , Bela Toth , Istvan Voros , Kalman Wentzely , Janos Zambo , Jozsef Zoldi
IPC分类号： C01F7/06
CPC分类号： C01F7/0633
摘要： The invention relates to an improved process for the production of alumina according to the Bayer technology, of bauxites containing goethite and especially of boehmitic or diasporic bauxites, for the acceleration of the digestion process, for the transformation of goethite into hematite, for the increase of alumina yield and for the reduction of the caustic soda losses, the essence of which consists in carrying out the digestion in the presence of 2-6% CaO and 0.2-2.0% Mg.sup.++, Fe.sup.++, Mn.sup.++ Co.sup.++ ions based on the weight of the dry bauxite or of compounds or ores containing these ions in the indicated quantities.
摘要翻译：本发明涉及一种根据拜耳技术生产氧化铝的改进方法，含有针铁矿的铝土矿，特别是硼酸铝或铀矿铝土矿，用于加速消解过程，用于将针铁矿转变成赤铁矿，以增加氧化铝产量和苛性钠损失的降低，其本质在于在2-6％CaO和0.2-2.0％Mg ++，Fe ++，Mn ++ Co ++离子的存在下进行消化，其基于干燥的重量铝土矿或含有这些离子的化合物或矿石。

3. 发明授权

US3944648A Method for processing bauxites 失效
标题翻译：铝土矿加工方法
公开(公告)号：US3944648A
公开(公告)日：1976-03-16
申请号：US485570
申请日：1974-07-03
申请人： Karoly Solymar , Janos Zambo , Marika Orban nee Kelemen , Erno Bujdoso , Ivan Feher , Zoltan Ozvald , Istvan Voros , Tibor Ferenczi , Pal Toth , Ferenc Lazar , Tihamer Pinter , Gyorgy Sigmond , Peter Siklosi , Kalman Wentzely , Laszlo Lengyel , Jozsef Matyasi
发明人： Karoly Solymar , Janos Zambo , Marika Orban nee Kelemen , Erno Bujdoso , Ivan Feher , Zoltan Ozvald , Istvan Voros , Tibor Ferenczi , Pal Toth , Ferenc Lazar , Tihamer Pinter , Gyorgy Sigmond , Peter Siklosi , Kalman Wentzely , Laszlo Lengyel , Jozsef Matyasi
IPC分类号： C01F7/06
CPC分类号： C01F7/0633
摘要： A method for processing bauxites according to the Bayer technology, with an increased yield in Al.sub.2 O.sub.3 and with decreased caustic soda losses, starting particularly from goethite bauxites of boehmite and/or diaspore type and carrying out the digestion at 180.degree.C to 300.degree.C using an aluminate liquor containing Na.sub.2 O.sub.caustic in a concentration of 80 to 300 g./l. The digestion is carried out in the presence of a calcium compound in an amount corresponding to 2 to 6 % of CaO calculated for the dry weight of bauxite and of a sulfate salt in an amount corresponding to 1.0 to 7.0 g./l. of sulfate ion concentration, whereby the goethite content of the bauxite is converted into hematite. The process provides advantageous conditions for the complete dissolution of the boehmite and diaspore content of bauxite in the vicinity of the equilibrium molar ratio, and enables to recover efficiently the caustic soda losses in the Bayer process itself, requiring no supplementary operation.
摘要翻译：根据拜耳技术处理铝土矿的方法，特别是从勃姆石和/或水泥浆类型的针铁矿铝土矿开始，Al2O3的产率提高，苛性钠损失降低，并在180℃至300℃下进行消化，使用含有浓度为80至300g / l的Na2O8的铝酸盐液体。在钙铝化合物的存在下进行消化，钙化合物的量相当于铝土矿的干重量和对应于1.0至7.0g / l的硫酸盐的2至6％的CaO。的硫酸根离子浓度，由此将铝土矿的针铁矿含量转化为赤铁矿。该方法提供了在平衡摩尔比附近完全溶解勃姆石和铝土矿的含量的有利条件，并且能够有效地回收拜耳法本身的苛性钠损失，不需要补充操作。

4. 发明授权

US5122349A Process for producing alumina 失效
标题翻译：氧化铝生产工艺
公开(公告)号：US5122349A
公开(公告)日：1992-06-16
申请号：US530085
申请日：1990-05-29
申请人： Gyorgy Banvolgyi , Jozsef Zoldi , Peter Siklosi , Tibor Ferenczi , T. Anna Csordas , Ivan Feher , Ildiko Tassy nee Varju , Istvan Sajo
发明人： Gyorgy Banvolgyi , Jozsef Zoldi , Peter Siklosi , Tibor Ferenczi , T. Anna Csordas , Ivan Feher , Ildiko Tassy nee Varju , Istvan Sajo
IPC分类号： C01F7/06
CPC分类号： C01F7/062 , C01F7/0666
摘要： An improvement in the process for extracting alumina from gibbsitic bauxites, wherein the basic, known process comprises mixing the bauxites with a sodium hydroxide-sodium aluminate digestion liquor, digesting the bauxites at a temperature in the range of 100.degree.-180.degree. C., diluting the resulting slurry, separating the red mud therefrom, precipitating alumina hydrate by cooling and agitation of the sodium aluminate liquor, and calcining the alumina hydrate precipitate to obtain alumina, wherein the improvement is characterized by so controlling the process that, in the liquid phase of the slurry leaving the digestion reactor, the reactive hydroxide ion concentration is maintained below 6 g/l, and preferably between 0 and 2 g/l, where the reactive hydroxide ion concentration is defined by the following formula: ##EQU1## where: C.sub.Al.sbsb.2 O.sub.3,gi.sup.eq is the equilibrium solubility of Al.sub.2 O.sub.3 for gibbsite, in g/l.C.sub.Al.sbsb.2 O.sub.3 is the actual concentration of Al.sub.2 O.sub.3, in g/l andC.sub.SiO.sbsb.2 is the actual concentration of SiO.sub.2, in g/l.Desirably, control of the process is maintained by regulating the ratio of bauxite to digestion liquor.
摘要翻译：碱性已知方法包括将铝土矿与氢氧化钠 - 铝酸钠消化液混合，在100-180℃的温度下消化铝土矿，稀释所得浆料，从中分离红泥，通过冷却和搅拌铝酸钠液体沉淀氧化铝水合物，并煅烧氧化铝水合物沉淀物以获得氧化铝，其中改进的特征在于控制在液相中离开消解反应器的浆料中，反应性氢氧根离子浓度保持在6g / l以下，优选在0至2g / l之间，其中活性氢氧根离子浓度由下式定义：其中：CAl 2 O 3 gieq是三水铝矿的Al2O3平衡溶解度，单位为g / l。 CAl2O3是Al2O3的实际浓度，g / l，CSiO2是SiO2的实际浓度，单位为g / l。理想地，通过调节铝土矿与消化液的比例来保持该方法的控制。

5. 发明授权

US4923529A Equipment for continuous heat treatment of tungsten filaments wound on molybdenum cores 失效
标题翻译：用于连续热处理钨丝缠绕在钼芯上的设备
公开(公告)号：US4923529A
公开(公告)日：1990-05-08
申请号：US258712
申请日：1988-10-17
申请人： Tibor Ferenczi , Laszlo Kovacs , Attila Szathmari
发明人： Tibor Ferenczi , Laszlo Kovacs , Attila Szathmari
IPC分类号： C21D11/00 , C22F1/18
CPC分类号： C21D11/00 , C22F1/18
摘要： The invention relates to continuous heat treatment of coiled tungsten filaments wound onto molybdenum cores, in the course of which said filament is passed first through a humid hydrogen atmosphere of about 1300.degree. C. then through a dry hydrogen atmosphere of a temperature of about 1700.degree. to about 1850.degree. C. The method complying with the invention is characterized by transfer times of the coiled tungsten filaments to be heat-treated through heating zones lying in the range of about 3 to about 7 seconds, preferably about 5 seconds, but the duration of passing through the 1700.degree. to 1850.degree. C. high-temperature is at most 7 seconds. The invention also covers the equipment suitable for accomplishing the method, consisting of two high-melting metallic heating tubes, an inventing wheel, a spiral winding/unwinding device, and a temperature sensing and controlling unit. The equipment complying with the invention is also characterized by the tungsten spiral filaments passing in axial direction through heating tubes of low thermal inertia and made of some low-melting metal directly heated with electric current supplied by an electric power unit, temperature control of which is accomplished by electronically controlling the passed-through current, based on measuring the resistance of the heating tube.
摘要翻译：本发明涉及卷绕在钼芯上的卷绕的钨丝的连续热处理，其中所述长丝首先通过约1300℃的潮湿氢气氛，然后通过约1700℃的干燥氢气氛约1850℃。符合本发明的方法的特征在于，通过加热区域进行热处理的螺旋钨丝的转移时间为约3至约7秒，优选约5秒，但持续时间通过1700°C至1850°C，高温至多7秒。本发明还包括适用于完成该方法的设备，包括两个高熔点金属加热管，发明轮，螺旋缠绕/退绕装置和温度感测和控制单元。符合本发明的设备的特征还在于钨螺旋细丝沿轴向通过低热惯性的加热管，并由直接由电力单元提供的电流加热的一些低熔点金属制成，其温度控制是通过电子控制通过电流，基于测量加热管的电阻来实现。

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