公开(公告)号：US3852173A

公开(公告)日：1974-12-03

申请号：US37480273

申请日：1973-06-28

Applicant: ALUMINUM CO OF AMERICA

Inventor： JACOBS S ,  JARRETT N ,  GRAHAM R ,  CAMPBELL R ,  COCHRAN C ,  HAUPIN W ,  FOSTER P ,  SLEPPY W

IPC: C25C3/06 ,  C25C3/18 ,  C22D3/12

CPC classification number: C25C3/06 ,  C25C3/18

Abstract: A process for producing aluminum, including electrolytically decomposing alumina to aluminum metal in an electrolyte bath between a carbon anode and a cathodic interface formed between metal and the electrolyte bath, the bath A. CONSISTING ESSENTIALLY OF Al2O3, NaF, and A1F3, and B. HAVING A WEIGHT RATIO NaF to A1F3 up to 1.1:1, WHILE MAINTAINING THE BATH AT AN OPERATING TEMPERATURE EFFECTIVE FOR PREVENTING BATH CRUSTING IN INTERFACIAL AREAS BETWEEN BATH AND ALUMINUM METAL, WHILE ENCLOSING THE TOP OF THE CELL FOR KEEPING THE SURFACE OF THE BATH MOLTEN, AND WHILE FEEDING ALUMINA A. SUBSTANTIALLY CONTINUOUSLY ONTO THE MOLTEN BATH SURFACE, B. THE ALUMINA HAVING A WATER CONTENT EFFECTIVE FOR PREVENTING ANODE DUSTING, C. THE CARBON ANODE BEING EXPOSED TO THE GASEOUS WATER EVOLVED FROM THE ALUMINA, WHEREBY ANODE DUSTING IS PREVENTED.

Abstract translation: 一种生产铝的方法，包括在碳阳极和形成在金属和电解质浴池之间的阴极界面之间的电解液浴中将铝氧化铝电解分解成铝金属，浴A。基于Al 2 O 3，NaF和AlF 3以及B. 具有重量比NaF至A1F3至1.1：

公开(公告)号：US3839019A

公开(公告)日：1974-10-01

申请号：US38880673

申请日：1973-08-16

Applicant: ALUMINUM CO OF AMERICA

Inventor： BRUNO M ,  JARRETT N ,  SLAUGENHAUPT B ,  GRAZIANO R

IPC: C22B21/06

CPC classification number: C22B21/064 ,  C22B21/066

Abstract: Aluminum is purified by chloridizing a molten body of aluminum in a highly efficient manner. High metal chloridization rates are achieved in a system wherein chlorine utilization efficiency is 100 percent or very closely approaches this level. The system includes a chlorine-metal contacting technique which includes an agitator and which controls and maintains contacting conditions to optimize efficiency.

Abstract translation: 通过以高效的方式氯化铝的熔融体来净化铝。 在氯利用效率为100％或非常接近该水平的系统中实现了高金属氯化速率。 该系统包括氯 - 金属接触技术，其包括搅拌器并控制并保持接触条件以优化效率。

公开(公告)号：US3849119A

公开(公告)日：1974-11-19

申请号：US37670373

申请日：1973-07-05

Applicant: ALUMINUM CO OF AMERICA

Inventor： BRUNO M ,  JARRETT N ,  SLAUGENHAUPT B

IPC: C22B21/06

CPC classification number: C22B21/064 ,  C22B21/062 ,  C22B21/066

Abstract: Molten aluminum is treated with selectively maintained salt flux in a compact efficient system to decrease its oxide, gas and sodium content. Gas removal is further aided by stripping with a non-reactive stripping gas. The system features an intensely agitated zone for contacting the metal and the salt flux followed by a quiet separation zone. Molten metal introduction, agitation and flux characteristics are utilized to achieve the required efficiencies.

Abstract translation: 在紧凑的有效系统中用选择性保持的盐通量处理熔融铝以降低其氧化物，气体和钠含量。 通过用非反应性汽提气体汽提进一步辅助除气。 该系统具有强烈搅拌的区域，用于接触金属和盐通量，随后是安静的分离区。 使用熔融金属引入，搅拌和通量特性来实现所需的效率。

公开(公告)号：US3846123A

公开(公告)日：1974-11-05

申请号：US29301672

申请日：1972-09-28

Applicant: ALUMINUM CO OF AMERICA

Inventor： JARRETT N ,  RACUNAS B

IPC: C22B7/00 ,  C22B21/00

CPC classification number: C22B21/0092 ,  C22B7/001 ,  Y02P10/214 ,  Y02P10/218

Abstract: 1. A METHOD OF RECOVERING ALUMINUM VALUES FROM ALUMINUM MATERIAL FED TO A POOL OF MOLTEN SALT, THE MEMETHOD COMPRISING THE STEPS OF (1) FEEDING ALUMINUM MATERIALS INTO SAID POOL, (2) CONTACTING THE ALUMINUM MATERIALS WITH SAID MOLTEN SALT, THE SALT BEING EFFECTIVE TO SEPARATE NON-METALLIC SOLIDS FROM THE ALUMINUM MATERIAL, AND THEREBY RELEASE MOLTEN ALUMINUM, (3) REMOVING MOLTEN ALUMINUM FROM SAID POOL OF SALT THEREBY SUBSTANTIALLY DEPLETING THE SAME OF ALUMINUM VALUES WHILE LEAVING ITENRICHED WITH A SUSPENSION OF NON-METALLIC SOLIDS, (4) CIRCULATING THE SALT ENRICHED WITH NON-METALLIC SOLIDS TO MAINTAIN SUSPENSION OF THE SAME IN SAID SALT AND TO DIRECT THE SUSPENSION AND SALT TO A DEVICE CAPABLE OF COLLECTING AND THEREBY REMOVING SOLIDS FROM SAID SALT TO SUBSTANTIALLY DEPLETE THE SALT OF SAID SOLIDS WHILE THE SALT DEPLETED OF SAID SOLIDS IS RETURNED DIRECTLY TO THE CIRCULATING SALT FROM THE DEVICE, AND

(5) CORRELATING THE FEEDING OF SAID ALUMINUM MATERIALS WITH THE REMOVAL OF SAID NON-METALLIC SOLIDS TO MAINTAIN IN SAID POOL A SOLIDS CONTENT NOR EXCEEDING 25 PERCENT BY WEIGHT OF THE SALT THEREIN.

公开(公告)号：US3842163A

公开(公告)日：1974-10-15

申请号：US17808071

申请日：1971-09-07

Applicant: ALUMINUM CO OF AMERICA

Inventor： RUSSELL A ,  STOUP P ,  JARRETT N ,  BURRELL L

IPC: B01D7/00 ,  B01D7/02 ,  C01F7/00 ,  C01F7/56 ,  C01F7/58 ,  C01F7/60 ,  C01F7/62 ,  C22B1/08 ,  C22B1/10

CPC classification number: B01D7/02 ,  C01F7/58 ,  C01F7/60 ,  C01F7/62 ,  C01P2004/03 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2006/10 ,  C01P2006/20 ,  C01P2006/80 ,  Y10S264/19 ,  Y10T428/2982

Abstract: 1. PROCESS FOR THE PRODUCTION OF ALUNIMUM CHLORIDE WHICH COMPRISES REACTING CHLORINE AT A TEMPERATURE OF BETWEEN ABOUT 450*-800* C. WITH ALUMINA HAVING AN AVERAGE ALPHA ALUMINA BEING INTERMIXED WITH CARBON AND WEIGHT AND AN AVERAGE SURFACE AREA OF AT LEAST ABOUT10 M.2/G., SAID ALUMINA BEING INTERMIXED WITH CARBON AND COMPOSITELY HAVING AN AVERAGE HYDROGEN CONTENT OF LESS THAN ABOUT 0.5% BY WEIGHT AND AN AVERAGE CARBON CONTENT OF ABOUT 15-24% BY WEIGHT BASED ON THE TOTAL ALUMINA, CARBON AND HYDROGEN CONTENTS PRESENT, TO FORM A GASEOUS EFFLUENT CONTAINING ALUMINUM CHLORIDE AND CARBON OXIDES IN WHICH AT LEAST ABOUT 25% BY WEIGHT OF SUCH CARBON OXIDES IS CARBON DIOXIDE, AND RECOVERING THE ALUMINUM CHLORIDE FROM THE GASEOUS EFFLUENT.

公开(公告)号：US3811916A

公开(公告)日：1974-05-21

申请号：US17807971

申请日：1971-09-07

Applicant: ALUMINUM CO OF AMERICA

Inventor： RUSSELL A ,  JARRETT N ,  MARSHALL B ,  REMPER J

IPC: B01D7/00 ,  B01D7/02 ,  C01F7/00 ,  C01F7/56 ,  C01F7/58 ,  C01F7/60 ,  C01F7/62 ,  B44D1/02

CPC classification number: B01D7/02 ,  C01F7/58 ,  C01F7/60 ,  C01F7/62 ,  C01P2004/03 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2006/10 ,  C01P2006/20 ,  C01P2006/80 ,  Y10S264/19 ,  Y10T428/2982

Abstract: Process for the preparation of selectively constituted carbon impregnated alumina through the thermal cracking of hydrocarbon in contact with a fluidized bed of particles of precoated high surface area alumina in a first zone to deposit carbon in situ thereon in conjunction with the deposition of residual crackable hydrocarbon from the first zone gaseous effluent on particles of uncoated high surface area alumina in a second zone and prior to their introduction into said first zone, and minimization of the amounts of free hydrogen attendant the resultant carbon impregnated product.

公开(公告)号：US3767382A

公开(公告)日：1973-10-23

申请号：US3767382D

申请日：1971-11-04

Applicant: ALUMINUM CO OF AMERICA

Inventor： BRUNO M ,  JARRETT N ,  SLAUGENHAUPT B

IPC: C22B21/06

CPC classification number: C22B21/064 ,  C22B21/062

Abstract: Molten aluminum is treated with selectively maintained salt flux in a compact efficient system to decrease its oxide, gas and sodium content. Gas removal is further aided by stripping with a non-reactive stripping gas. The system features an intensely agitated zone for contacting the metal and the salt flux followed by a quiet separation zone. Molten metal introduction, agitation and flux characteristics are utilized to achieve the required efficiencies.

Abstract translation: 在紧凑的有效系统中用选择性保持的盐通量处理熔融铝以降低其氧化物，气体和钠含量。 通过用非反应性汽提气体汽提进一步辅助除气。 该系统具有强烈搅拌的区域，用于接触金属和盐通量，随后是安静的分离区。 使用熔融金属引入，搅拌和通量特性来实现所需的效率。