us7776190b2 - cathodes for aluminum electrolysis cell

Atomic scale investigations of carbon

2019/5/1The graphite crystal in carbon cathodes has preferentially undergone strain-induced amorphization and accumulation during aluminum electrolysis. The stress caused by sodium expansion and extern load considerably damaged the atomic structure of carbon cathodes and was accompanied by fragmented basal planes, the formation of kink bands, and a remarkable increase of the interlayer

Ambient electrical conductivity of carbon cathode materials

2015/11/1Trans. Nonferrous Met. Soc. China 25(2015) 3753ˆ'3759 Ambient electrical conductivity of carbon cathode materials for aluminum reduction cells Jun ZHU1,2, Ji-lai XUE1,2, Ya-nan ZHANG1, Xiang LI1, Tong CHEN1 1. School of Metallurgical and Ecological

US20080308415A1

Cathodes for aluminum electrolysis cells are formed of cathode blocks and current collector bars attached to those blocks. The cathode slots receiving the collector bar are lined with expanded graphite lining thus providing longer useful lifetime of such cathodes and increased cell productivity.

The firing method electrolytic cell for aluminum production

FIELD: starting aluminum cell after major repairs or after mounting new cell. SUBSTANCE: method comprises steps of charging part of raw material along periphery of cathode device; firing hearth; pouring liquid electrolyte; electrically connecting cell and feeding to bath solid sodium salts in the form of mixture of flotation and regeneration cryolite taken in quantity 70 -95 mass% of total

Cathodic products for the aluminium industry

Carbon paste is an essential component in the construction of an electrolysis cell and is an important factor in a electrolysis pot's performance and durability. The know-how that Carbone Savoie has acquired and the research projects we have carried out jointly with our clients means Carbone Savoie now sets the industry standard in ramming paste.

Optimization of the cathode block shape of an

A finite element/optimization model was developed to determine the optimum shape of the cathode block of an AP-30 aluminum electrolysis cell. The optimum shape is the design that makes the electric current density on the surface of the cathode block as uniform as possible so as to simultaneously prolong its lifetime, to minimize its energy consumption and to minimize the cost of material.

US20080308415A1

Cathodes for aluminum electrolysis cells are formed of cathode blocks and current collector bars attached to those blocks. The cathode slots receiving the collector bar are lined with expanded graphite lining thus providing longer useful lifetime of such cathodes and increased cell productivity.

Hall–Hroult process

The density of liquid aluminum is 2.3 g/ml at temperatures between 950 and 1000 C. The density of the electrolyte should be less than 2.1 g/ml, so that the molten aluminum separates from the electrolyte and settles properly to the bottom of the electrolysis cell.

Primary Aluminum: Inert Anode and Wettable Cathode

2020/2/19US10415147 — ELECTRODE CONFIGURATIONS FOR ELECTROLYTIC CELLS AND RELATED METHODS — Elysis Limited Partnership (Canada) — In one embodiment, an electrolytic cell for the production of aluminum from alumina includes: at least one anode module with each module configured with a plurality of vertically oriented inert anodes; at least one cathode module, opposing

Cathodes in Aluminium Electrolysis: Sorlie, Morten; Oye,

Cathodes in Aluminium Electrolysis Library Binding – January 1, 1989 by Harald A. Sorlie, Morten; Oye (Author) 5.0 out of 5 stars 2 ratings See all formats and editions Hide other formats and editions Price New from Used from Library Binding Please retry

Cathodic products for the aluminium industry

Carbon paste is an essential component in the construction of an electrolysis cell and is an important factor in a electrolysis pot's performance and durability. The know-how that Carbone Savoie has acquired and the research projects we have carried out jointly with our clients means Carbone Savoie now sets the industry standard in ramming paste.

ALUMINUM CATHODES

In summary, Limpact cathodes have an initial cost that is 1.5X more than a basic cathode, however Limpact cathodes have a lifetime that is 2X to 3X the lifetime of the basic bi-met cathode. As a result, the annual cathode replacement cost is reduced by 25% – 40% saving $600,000 to $900,000 per year.

Long

article{osti_5099243, title = {Long-term testing and evaluation of cathode components in a commercial aluminum cell}, author = {Gee, J T and Tucker, K W and Joo, L A and Stewart, D V and Alcorn, T and Tabereaux, A}, abstractNote = {Since 1886, essentially all primary aluminum has been produced in Hall-Heroult electrolytic cells which electrochemically reduce alumina to the metal in an energy

Elit, a new type of cathode for aluminium electrolysis

The document Development of a New Type of Cathode for Aluminium Electrolysis was presented at the 2016 ICSOBA Conference in Quebec. This is a new solution for aluminum plants seeking a block with intermediate properties between graphite cathodes and carbon cathodes.

Optimization of the cathode block shape of an aluminum

2013/9/1A finite element/optimization model was developed to determine the optimum shape of the cathode block of an AP-30 aluminum electrolysis cell. The optimum shape is the design that makes the electric current density on the surface of the cathode block as uniform as possible so as to simultaneously prolong its lifetime, to minimize its energy consumption and to minimize the cost of material.

Phase III Advanced Anodes and Cathodes Utilized in

Abstract During Phase I of the present program, Alcoa developed a commercial cell concept that has been estimated to save 30% of the energy required for aluminum smelting. Christini, R A, Dawless, R K, Ray, S P, and Weirauch, Jr, D A. Phase III Advanced Anodes and Cathodes Utilized in Energy Efficient Aluminum Production Cells..

A New Lining Material for Aluminum Electrolysis Cells

Morten Srlie, Harald ye (2010) Cathodes in aluminum electrolysis. (3 rd edn), Aluminum-Verlag , Dsseldorf, Germany, p. 662. Brooks DG, Cutshall ER, Banker DB, Strahan DF (1992) Thermal treatment of spent potliner in a rotary kiln. Light Metals pp. 283

Hall–Hroult process

The density of liquid aluminum is 2.3 g/ml at temperatures between 950 and 1000 C. The density of the electrolyte should be less than 2.1 g/ml, so that the molten aluminum separates from the electrolyte and settles properly to the bottom of the electrolysis cell.

Cathodes for aluminum electrolysis cell with expanded

Cathodes for aluminum electrolysis cells are formed of cathode blocks and current collector bars attached to those blocks. The cathode slots receiving the collector bar are lined with expanded graphite lining thus providing longer useful lifetime of such cathodes and

A New Lining Material for Aluminum Electrolysis Cells that Can

A New Lining Material for Aluminum Electrolysis Cells that Can be Recycled Aleksandr V. Proshkin1, Vitaly V. Pingin2, Viktor Kh. Mann3 and Yury M. Shtefanyuk4 1. Head, Laboratory of Carbon Materials 2. Director, Aluminum Research Development, 3.

On the Path to Aluminum Electrolysis 4.0

TRIMET Aluminium SE is participating in the "Aluminium Electrolysis 4.0" project. In cooperation with the University of Wuppertal, the materials specialist is developing innovative concepts for a more efficient production of aluminum in fused-salt electrolysis and for adapting aluminum production to the power supply through renewable energies.

Investigation of materials for inert electrodes in aluminum

article{osti_5743785, title = {Investigation of materials for inert electrodes in aluminum electrodeposition cells}, author = {Haggerty, J. S. and Sadoway, D. R.}, abstractNote = {Work was divided into major efforts. The first was the growth and

Magnetohydrodynamic Model Coupling Multiphase

Weakly Coupled Thermo-electric and MHD Mathematical Models of an Aluminum Electrolysis Cell. Light Metals 2005, 449–454. Google et al. New Cathodes in Aluminum Reduction Cells. Light Metals 2011, 191–197. Google Scholar 11. V. Potocnik, F Cell

Performance of the Cathodes with Trapezoidal

Trapezoidal protrusions were added onto flat cathodes with the objective of enhancing the flow resistance to the metal in aluminum electrolysis cells. This design was tested for 8nbsp;months and proved to be effective in reducing cell voltage. Subsequently, trials revealed that when all the protrusions were widened, the energy consumption was barely influenced. Moreover, in the case of flat

Is aluminium electrolysis using inert anodes a blind

An electrolysis technology may well have a lifetime of 50 years, but only if modifications are made during this period. One argument in favour of using inert anodes is to prevent the formation of perfluorocarbons (PFCs), which are a group of very powerful greenhouse gases.

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