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1. 发明授权

US4121983A Metal production 失效
标题翻译：金属生产
公开(公告)号：US4121983A
公开(公告)日：1978-10-24
申请号：US862829
申请日：1977-12-21
申请人： Donald L. Kinosz , Subodh K. Das , Robert L. Coffman
发明人： Donald L. Kinosz , Subodh K. Das , Robert L. Coffman
IPC分类号： C25C3/06 , C25C3/08 , C25C7/02 , C25B11/12 , C25C3/04
CPC分类号： C25C3/06 , C25C3/08 , C25C7/025
摘要： A process is provided for producing aluminum in an electrolytic cell containing aluminum chloride dissolved in a molten solvent of higher decomposition potential. The cell has a terminal anode, a terminal cathode and a bipolar electrode arranged to operate with the anode and the cathode, providing interelectrode spaces therebetween. On electrolyzing the cell chlorine is produced on each anode surface thereof and aluminum on each cathode surface, the aluminum being swept from the cathode surface by bath material. In the process, carbonaceous material is provided for use as the electrode. The direction of grain flow constituting the carbonaceous material is determined and the electrode is arranged in the cell such that the direction of electrolysis current flow through the cell is in a direction substantially perpendicular to the direction of grain flow in the electrode.
摘要翻译：提供了在含有溶解在较高分解电位的熔融溶剂中的氯化铝的电解槽中生产铝的方法。电池具有端子阳极，端子阴极和布置成与阳极和阴极一起操作的双极电极，在它们之间提供电极间空间。在电解电池时，在其每个阳极表面上产生氯，在每个阴极表面上产生铝，铝通过浴材从阴极表面扫过。在此过程中，提供碳质材料用作电极。确定构成碳质材料的晶粒流动的方向，并且将电极设置在电池中，使得电解电流流过电池的方向处于与电极中的颗粒流动方向基本垂直的方向。

2. 发明授权

US4168215A Situ cleaning of electrolytic cells 失效
标题翻译：原位清洗电解槽
公开(公告)号：US4168215A
公开(公告)日：1979-09-18
申请号：US884744
申请日：1978-03-09
申请人： Donald L. Kinosz , David A. Wohleber , Subodh K. Das
发明人： Donald L. Kinosz , David A. Wohleber , Subodh K. Das
IPC分类号： C25C3/00 , C25C3/06 , C25C3/04 , C25C3/34
CPC分类号： C25C3/06 , C25C3/00
摘要： A method is provided for removing aluminum or compounds thereof causing a short circuit in an electrolytic cell containing aluminum chloride dissolved in a molten solvent of higher decomposition potential, the cell used for the production of aluminum from aluminum chloride and having a terminal anode and cathode providing an inter-electrode space therebetween. The method comprises removing aluminum chloride and molten solvent from the cell to an extent which exposes the materials in the inter-electrode space causing the short circuit, introducing a source of chlorinating agent to the cell and contacting the materials causing the short circuit with the chlorinating agent to form aluminum chloride, the contacting being for a time sufficient to remove the short circuit thereby permitting the addition of the aluminum chloride and solvent and the electrolysis thereof for the production of aluminum.
摘要翻译：提供一种用于除去铝或其化合物的方法，该电解槽含有溶解在较高分解电位的熔融溶剂中的氯化铝的电解槽，用于从氯化铝制造铝的电池并具有端子阳极和阴极其间的电极间空间。该方法包括从电池中除去氯化铝和熔融溶剂至暴露导致短路的电极间空间中的材料的程度，将氯源的来源引入电池并使与氯化反应导致短路的材料接触试剂形成氯化铝，接触时间足以消除短路，从而允许加入氯化铝和溶剂以及用于生产铝的电解。

3. 发明授权

US4259161A Process for producing aluminum and electrodes for bipolar cell 失效
标题翻译：用于制造双极电池的铝和电极的方法
公开(公告)号：US4259161A
公开(公告)日：1981-03-31
申请号：US97437
申请日：1979-11-26
申请人： Subodh K. Das , Robert L. Coffman
发明人： Subodh K. Das , Robert L. Coffman
IPC分类号： C25C3/06 , C25C3/08 , C25C3/12 , C25C7/02
CPC分类号： C25C3/06 , C25C3/08 , C25C3/125
摘要： A carbonaceous electrode for use in a bipolar electrolytic cell is treated on one side with a source of aluminum to form an adherent layer of aluminum carbide thereon. The electrode is arranged in the cell such that on the passage of electrolyzing current the treated surface functions as a cathode. On electrolyzing the cell, chlorine is produced on each anode surface and aluminum is produced on each cathode surface.
摘要翻译：用于双极电解池的碳质电极在一侧用铝源处理，以在其上形成碳化铝粘附层。电极设置在电池中，使得在电解电流通过时，处理的表面用作阴极。在电解电池时，在每个阳极表面上产生氯，并且在每个阴极表面上产生铝。

4. 发明授权

US4308114A Electrolytic production of aluminum using a composite cathode 失效
标题翻译：使用复合阴极电解生产铝
公开(公告)号：US4308114A
公开(公告)日：1981-12-29
申请号：US170639
申请日：1980-07-21
申请人： Subodh K. Das , Perry A. Foster, Jr. , Gregory J. Hildeman
发明人： Subodh K. Das , Perry A. Foster, Jr. , Gregory J. Hildeman
IPC分类号： C04B35/52 , C04B35/532 , C04B35/58 , C04B41/50 , C04B41/51 , C04B41/87 , C04B41/88 , C25C3/08 , C25C3/06 , C25C7/02
CPC分类号： C04B35/5607 , C04B35/52 , C04B35/532 , C04B35/58007 , C04B35/58071 , C04B35/58078 , C04B35/58092 , C04B35/63496 , C04B41/009 , C04B41/5053 , C04B41/5133 , C04B41/87 , C04B41/88 , C25C3/08 , C04B2235/666
摘要： A metal such as aluminum is produced by electrolysis of a compound of the metal in a solvent or bath such as molten salt. Electrolysis is carried out by passing a current from an anode to a cathode between which the solvent bath is situated. The cathode is composed of a composite comprising graphite and a refractory hard metal such as titanium diboride. The properties and performance of the composite cathode are improved through careful manufacturing controls and selectivity with respect to electrode configuration and cell operating conditions.
摘要翻译：通过在诸如熔融盐的溶剂或浴中电解金属化合物来生产诸如铝的金属。电解是通过将电流从阳极传递到溶剂浴所在的阴极之间进行的。阴极由包含石墨和难熔硬金属如二硼化钛的复合材料组成。通过对电极配置和电池工作条件的仔细制造控制和选择性，可以改善复合阴极的性能和性能。

5. 发明授权

US4046558A Method for the production of aluminum-silicon alloys 失效
标题翻译：生产铝硅合金的方法
公开(公告)号：US4046558A
公开(公告)日：1977-09-06
申请号：US744154
申请日：1976-11-22
申请人： Subodh K. Das , Richard A. Milito
发明人： Subodh K. Das , Richard A. Milito
IPC分类号： C22B21/02
CPC分类号： C22B21/02
摘要： A method of producing an aluminum-silicon type alloy from alumina-silica bearing materials comprises providing the silica and alumina bearing materials in a mix having a weight ratio of silica to alumina in the range of 0.5 to 1.1. The method further comprises providing a source of carbonaceous material in the mix and carbothermically reducing it to form the aluminum-silicon alloy.

6. 发明授权

US4417097A High temperature, corrosion resistant coating and lead for electrical current 失效
标题翻译：耐高温，耐腐蚀涂层和电流导线
公开(公告)号：US4417097A
公开(公告)日：1983-11-22
申请号：US270509
申请日：1981-06-04
申请人： Subodh K. Das
发明人： Subodh K. Das
IPC分类号： H01B5/02 , H01B7/28 , H01R4/58 , H01B7/02 , B32B9/04 , C25C7/00 , H01R3/00
CPC分类号： C25C3/16 , H01B5/02 , H01B7/28 , H01R4/58 , Y10T428/1259 , Y10T428/12618 , Y10T428/12778 , Y10T428/12979
摘要： A low porosity coating comprised of at least two layers of material or composites capable of protecting a metal substrate from the corrosive effects of a chlorine-metal chloride environment at temperature values ranging up to 650.degree. C. The first of the two layers has a coefficient of thermal expansion that lies between the metal of the substrate and that of a metal oxide(s) layer disposed upon the first layer. A layer of metal oxide is disposed on the first layer, the metal oxide having a coefficient of expansion somewhat less than the first layer and a minimum solubility in the chlorine-chloride environment. The material or composite of the first layer and the metal oxide of the oxide layer are applied by a technique which sprays particles of the material or composite and metal oxide(s) against a surface at relatively high velocities and temperatures.
摘要翻译：低孔率涂层由至少两层材料或复合材料组成，能够保护金属基材免受氯 - 金属氯化物环境的腐蚀作用，温度范围高达650℃。两层中的第一层具有系数的位于基板的金属和设置在第一层之间的金属氧化物层的热膨胀之间。金属氧化物层设置在第一层上，该金属氧化物的膨胀系数稍小于第一层，在氯氯化物环境中的溶解度最小。氧化物层的第一层和金属氧化物的材料或复合物通过以相对高的速度和温度将材料或复合材料和金属氧化物的颗粒相对于表面喷射的技术来施加。

7. 发明授权

US4396482A Composite cathode 失效
标题翻译：复合阴极
公开(公告)号：US4396482A
公开(公告)日：1983-08-02
申请号：US307374
申请日：1981-10-01
申请人： Subodh K. Das , Perry A. Foster, Jr. , Gregory J. Hildeman
发明人： Subodh K. Das , Perry A. Foster, Jr. , Gregory J. Hildeman
IPC分类号： C04B35/52 , C04B35/532 , C04B35/58 , C04B41/50 , C04B41/51 , C04B41/87 , C04B41/88 , C25C3/08 , C25C3/06
CPC分类号： C04B35/6303 , C04B35/56 , C04B35/58 , C04B35/5805 , C04B35/58071 , C04B35/58078 , C04B35/58085 , C04B41/5053 , C04B41/5133 , C04B41/87 , C04B41/88 , C25C3/08 , C04B2235/666
摘要： An improved electrolytic cell is provided for production of a metal such as aluminum by electrolysis of a compound of the metal in a solvent or bath such as molten salt. Electrolysis is carried out by passing a current from an anode to a cathode between which the solvent bath is situated. The cathode comprises a base cathode and cathode extension surfaces comprising graphite and at least 90% refractory hard metal such as titanium diboride. The cathode extension surfaces are produced from a mixture comprising at least 90% refractory hard metal and a carbonaceous binder with little or substantially no particulate carbonaceous material and graphitizing said mixture above 2350.degree. C. to graphitize the carbonaceous material therein to exhibit the graphitic structure.
摘要翻译：提供了一种改进的电解池，用于通过在诸如熔融盐的溶剂或浴中电解金属化合物来生产金属如铝。电解是通过将电流从阳极传递到溶剂浴所在的阴极之间进行的。阴极包括基底阴极和阴极延伸表面，其包括石墨和至少90％的难熔硬金属，例如二硼化钛。阴极延伸表面由包含至少90％耐火硬金属和碳质粘合剂的混合物制成，具有很少或基本上没有颗粒状碳质材料，并将所述混合物石墨化在2350℃以上，以使其中的碳质材料石墨化以显示石墨结构。

8. 发明授权

US4053303A Method of carbothermically producing aluminum-silicon alloys 失效
标题翻译：热力生产铝硅合金的方法
公开(公告)号：US4053303A
公开(公告)日：1977-10-11
申请号：US747999
申请日：1976-12-06
申请人： C. Norman Cochran , Subodh K. Das , Richard A. Milito
发明人： C. Norman Cochran , Subodh K. Das , Richard A. Milito
IPC分类号： C22B4/06 , C22B21/02 , C22C1/02
CPC分类号： C22C1/026 , C22B21/02
摘要： Aluminum-silicon alloys are formed by bringing a mix containing sources of alumina, silica and carbon to a temperature in the range of 1500.degree. and 1600.degree. C to form silicon carbide and carbon monoxide. The mix containing the silicon carbide is then brought to a temperature in the range of 1600.degree. to 1900.degree. C to form aluminum oxycarbide and carbon monoxide. Thereafter, the mix containing the silicon carbide and aluminum oxycarbide is brought to a temperature in the range of 1950.degree. to 2200.degree. C to produce an aluminum-silicon alloy.

9. 发明授权

US5104459A Method of forming aluminum alloy sheet 失效
标题翻译：铝合金板材成型方法
公开(公告)号：US5104459A
公开(公告)日：1992-04-14
申请号：US656528
申请日：1991-02-19
申请人： Lian Chen , James G. Morris , Subodh K. Das
发明人： Lian Chen , James G. Morris , Subodh K. Das
IPC分类号： C22F1/04 , C22F1/047
CPC分类号： C22F1/047 , C22F1/04
摘要： Methods for the improvement of mechanical properties of aluminum can stock materials. In one method, an aluminum alloy is cast into an ingot, heated at an elevated temperature to homogenize the alloy, hot rolled at an elevated temperature to form hot band material and cold rolled to final gauge. After the heating step, the alloy is hot rolled immediately to minimize the cooling of the alloy between the heating and hot rolling steps.
摘要翻译：提高铝合金机械性能的方法可以是原料。在一种方法中，将铝合金铸造成锭，在高温下加热以使合金均质化，在高温下热轧以形成热带材料并冷轧至最终规格。在加热步骤之后，立即热轧合金以最小化加热和热轧步骤之间的合金的冷却。

10. 发明授权

US4529717A Partially calcined carbonaceous material as a reductant 失效
标题翻译：部分煅烧碳质材料作为还原剂
公开(公告)号：US4529717A
公开(公告)日：1985-07-16
申请号：US608342
申请日：1984-05-08
申请人： Raouf O. Loutfy , James C. Withers , Subodh K. Das , Samuel S. Jones
发明人： Raouf O. Loutfy , James C. Withers , Subodh K. Das , Samuel S. Jones
IPC分类号： C01F7/60 , C01G1/06 , B01J20/20 , C01B31/08
CPC分类号： C01G1/06 , C01F7/60
摘要： An improved solid carbon reductant comprising partially calcined carbonaceous materials such as petroleum coke, containing relatively low amounts of residual hydrocarbons and a relatively high surface area and thus increased activity as compared to known reductants is provided. This improved reductant is produced by a method comprising heating the carbonaceous material in an oxidizing atmosphere to a temperature of from about 650.degree. C. to about 950.degree. C., preferably from about 800.degree. C. to about 875.degree. C., and most preferably at a temperature about 850.degree. C. In addition, according to the present invention improved chlorination processes are provided using these reductants which result in reduced levels of chlorinated hydrocarbon (C.sub.x Cl.sub.y) production due to reduced residual hydrocarbons. In a preferred embodiment anhydrous aluminum chloride is produced by chlorination of aluminum hexahydrate using the improved reductant.
摘要翻译：提供了一种改进的固体碳还原剂，其包括部分煅烧的碳质材料如石油焦炭，其含有相对低量的残余烃和相对较高的表面积，因此与已知的还原剂相比增加了活性。该改进的还原剂通过以下方法制备：将氧化气氛中的碳质材料加热到约650℃至约950℃，优选约800℃至约875℃的温度，优选在约850℃的温度下进行。此外，根据本发明，使用这些还原剂提供改进的氯化方法，这导致由于减少的残余烃而导致的氯化烃（C x Cly）生产水平降低。在优选的实施方案中，使用改进的还原剂，通过氯化六水合铝制备无水氯化铝。

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