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：US3855086A

公开(公告)日：1974-12-17

申请号：US37480373

申请日：1973-06-28

Applicant: ALUMINUM CO OF AMERICA

Inventor： SLEPPY W ,  CAMPBELL R

IPC: C25C3/06 ,  C25C3/18 ,  C22D3/12

CPC classification number: C25C3/18 ,  C25C3/06

Abstract: In the operation of a cell for the electrolytic reduction of Al2O3 dissolved in a cryolite bath of aluminum metal utilizing a carbon anode, the improvement wherein there is provided at the anode an atmosphere containing water in amounts effective for preventing anode dusting.

Abstract translation: 在利用碳阳极溶解在铝金属的冰晶石槽中的Al 2 O 3的电解还原电池的操作中，其中在阳极处设置有用于防止阳极撒粉的量的含有水的气氛。

公开(公告)号：US3839167A

公开(公告)日：1974-10-01

申请号：US37480573

申请日：1973-06-28

Applicant: ALUMINUM CO OF AMERICA

Inventor： SLEPPY W

IPC: C25C3/06 ,  C25C3/18 ,  C22D3/12 ,  C22D3/02

CPC classification number: C25C3/06 ,  C25C3/18

Abstract: Use of an alumina which has a total water of 3 to 20 wt.-percent and a surface area of at least 45 m2/g as cell feed improves the efficiency of operation of an electrolytic cell for reduction of alumina to aluminum.

Abstract translation: 使用总水为3〜20重量％，表面积为45m 2 / g以上的氧化铝作为电池进料，提高了将氧化铝还原为铝的电解槽的运转效率。