Light Metals 2008: Electrode Technology

Volume four of four: This publication includes papers on electrode technology from the 2008 TMS Annual Meeting. Other volumes include papers on alumina and bauxite, aluminum reduction, hot and cold rolling and recycling aluminum.
From the 2008 TMS Annual Meeting, held March 9–12, 2008, in New Orleans, LA.

Spis treści:
Preface.
Editor′s Biography.
Program Organizer′s.
Aluminum Committee.
Alumina and Bauxite.
HSEC.
Safety Performance at Alunorte (Jorge Lima).
Tailings Impoundment Life Extension at Sherwin Alumina: Success Breeds Its Own Challenges (Thomas Ballou, and Ed Peterson).
Proposed Mechanism for the Formation of Dust Horizons on Bauxite Residue Disposal Areas (Craig Klauber, Nicole Harwood, Renee Hockridge, and Campbell Middleton).
Waste into Wealth (S. Balasubramaniam, and R. Vasantha Kumar).
Short– and Long–Range Order in Smelter Grade Alumina – Development of Nano– and Microstructure during the Calcination of Bayer Gibbsite (Linus Perander, Zoran D. Zujovic, Margaret M. Hyland, Mark E. Smith, Luke A. O′Dell, and James B. Metson).
Equipment.
Advanced Filtration Methods for Pregnant Liquor Purification (Reinhard Bott, Thomas Langeloh, and Juergen Hahn).
Digestion Energy Efficiency at RTA Yarwun Alumina Refinery (Stephen Austin, and Samantha Parry).
Operational Experience with a Brownfield Expansion Project in Sayanogorsk, Russia (Andreas Wolf, Peter Hilgraf, Arne Hilck, and Sergey V. Marshalko).
MAX HTTMSodalite Scale Inhibitor: Plant Experience and Impact on the Process (Donald Spitzer, Owen Chamberlain, Calvin Franz, Morris E. Lewellyn, and Qi Dai).
How to Achieve High Availability with Large Calciners and Avoid Unforseen Downtime (Pekka Hiltunen, Roger Bligh, Cornelis Klett, Michael Missalla, and Hans–Werner Schmidt).
Customized De scaling Robots – Improving Worker’s Health and Safety, Increasing Alumina Production Capacity (Clément Potvin, Antonio Pucci, Claude Caya, Don Puxley, and Éloïse Harvey).
Determination of a Suitable Dewatering Technology for Filtration of Bauxite after Pipeline Transport (Adriano Campos, and Reinhard Bott).
Bauxite.
Chinese Bauxite and Its Influences on Alumina Production in China (Songqing Gu).
Alunorte Bauxite Dewatering Station – a Unique Experience (Ayana Oliveira, Juarez Dutra, and Jorge Lima).
A New Method Using Hydraulic Excavator and Tractor on Paragominas Bauxite Mine (Octávio Guimarâes, Henrique Cesar Vieira Santos, and Hildegundes Silva).
Design and Operation of the World′s First Long Distance Bauxite Slurry Pipeline (Ramesh Gandhi, Michael Weston, Maru Talavera, Geraldo Pereira Brittes, and Eder Barbosa).
Bauxite to Gallium – The Electronic Metal of the Twenty–First Century (Chitta Mishra, and M. K. B. Nair).
Behaviour of Berylium in Alumina Production from Bauxites by Bayer Process and Development of Reliable Method of Its Determination (Alexander Suss, Irina Paromova, Andrey Panov, Olga V. Shipova, and Natalia N. Kutkova).
Impact of Jamaican Bauxite Mineralogy on Plant Operations (Desmond Lawson, Ab Rijkeboer, Lawrence Andermann, and Austin Mooney).
Additives.
New Crystal Growth Modifiers for Bayer Process (Dimitri Kouznetsov, Jianjun Liu, Kevin O′Brien, James Counter, and John Kildea).
The Effect of DSP Structure on Removal of Impurities from Refinery Liquor and Efficiency of Alkali Recovery Process (A. Kuvyrkina, N. Kuznetsova, A. Lapin, A. Suss, and Andrey Panov).
Performance Appraisal of Evaporation System with Scale Inhibitor Application in Alunorte Plant (Ayana Oliveira, Juarez Dutra De Moraes, Jefferson Dos Santos Batista, Jorge Lima, Ricardo Lyan Carvalho Diniz, and Emiliano Repetto).
Cost Savings by Improved Filtration and Washing of Al–Hydrate Product (Reinhard Bott, Thomas Langeloh, and Juergen Hahn).
Autoprecipitation Control with HXPAM Technology (Qi Dai, Scott Moffatt, and Morris Lewellyn).
Application and Performance Characteristics of Superfloc® TF–8000 – A New HXPAM Based Hydrate Flocculant (Franklyn Ballentine, Scott Moffatt, and Pat Clement).
Operations.
The Kinetics of Quartz Dissolution in Caustic Solutions and Synthetic Bayer Liquors (Bingan Xu, Christine Wingate, and Peter Smith).
Potential Improvements of Bauxite Atmospheric Digestion Circuit (Alexander Suss, Nikolay Ivanushkin, Irina Paromova, Anatoly Lapin, Andrey Panov, Tatiana Gabrielyan, S. Snurnitzyna, and T. Martynyuk).
Process Diagnosis Based on Neural Network Expert System for Gas Suspension Calcinations of Aluminum Hydroxide (Dai fei Liu, Jie Li, Feng qi Ding, Zhong Zou, and Xiang tao Chen).
Review on the Quality of Alumina (Wangxing Li, Dalin Fan, Zhonglin Yin, and Zhanwei Liu).
Precipitation.
The Effects of Wet Oxidation on Hydrate Yield Inhibitors in Alkaline Aluminate Solutions (Joanne Loh, Greta Brodie, Greg Power, and Chris Vernon).
Using Mass Balance for Solids Concentration Control at Agglomerator Tanks (Anderson Amaral, Cleto Maués Junior, Luiz Gustavo Correa, Jorge Lima, Joaquim Ribeiro Filho, and Luiz dos Santos).
The Most Important Sustainable Development Issues of Chinese Alumina Industry (Wangxing Li, Jibo Liu, Zhiming Liu, and Yadong Wang).
The Impact of Conversion from Batch to Continuous Agglomeration at the Ewarton Alumina Refinery (Patrick Harris).
Characterization Profile in Scales from CVG–Bauxilum (Ricardo Galarraga, Royman Cañas, and Nelson Piñero).
Aluminum Reduction Technology.
Sustainability and Environmen t.
Innovative Solutions to Sustainability in Hydro (Hans Petter Lange, Nancy Jorunn Holt, Hogne Linga, and Lene Navestad Solli).
Smelters in the EU and the Challenge of the Emission Trading Scheme (Heinrich Kruse).
Wireless Measurement of Duct Temperatures on Aluminum Smelting Pots: Correlation to Roofline HF Concentration (Daniel A. Steingart, James Evans, Andrew Redfern, Paul K. Wright, Neal Dando, Weizong Xu, Michael Gershenzon, and Henk Van der Meyden).
Hard Gray Scale (Neal Dando, and Stephen Lindsay).
Comparison of PFC Emission Rates for Operating and Newly Started Pots at a Horizontal Stud Soderberg Smelter (Neal Dando, Weizong Xu, Roger Nickols, Steven Rusche, and Mitch Nemier).
Reduced Emissions from the Elkem Aluminium Lista Søderberg Smelter (Tor Pedersen, Marianne Jensen, Kjell Kalgraf, Willi Larsen, and Arnt Tellef Olsen).
Comparison of PFC Emission Coefficients for Operating and Startup Pots at a Side Work Prebake Smelter (Weizong Xu, Neal Dando, and David Sedlacek).
Scrubbing: Development of a Technical Audit System for Process, Operation and Maintenance (Mario Dion, and Michel Meyer).
Cell Development Part I and Operations.
The FECRI Approach and the Latest Development of AP3X Technology (Oliver Martin, Serge Despinasse, Claude Ritter, Renaud Santerre, and Thierry Tomasino).
Expansion of the Potline in Slovalco (Marvin Bugge, Milos Koniar, Kamil Skladan, and Milan Stas).
The Alcan′s P155 Smelters Now Operating at 195 kA: A Successful Assets Optimization Strategy (Claude Richard, Patrice Desrosiers, Louis Lefrançois, and Bruno Gaudreault).
Design Enhancements to GP320 Technology at Balco (J. Ramaswamy, C Sukumaran, and Gude Narendra Kumar).
The Continuous Development of SAMI′s SY300 Technology (Zhu Jiaming, Yang Xiaodong, and Liu Yafeng).
Increase of Amperage at Sayanogorsk Aluminum S melter (Victor Mann, Victor Buzunov, Oleg Burkatsky, Alexander Krasovitsky, and Iliya Puzanov).
Anode Signal Analysis: The Next Generation in Reduction Cell Control (Jeffrey Keniry, and Eugene Shaidulin).
Image Analysis for Estimation of Anode Cover Material Composition (Jayson Tessier, Carl Duchesne, Claude Gauthier, and Gilles Dufour).
An Automated Metal Purity Optimization System for Enhanced Revenue Capture (Jason Lodzik, Michael Van Hauwermeiren, and Doc Murdoch).
Impact of Alumina Fines Content on Potline Performance Ouro Preto Smelter (Thiago Simões, João Alberto Martins, Marcio Guimarães, and João Costa).
Process Control.
Common Cell Behavior and Cell Abnormalities in Aluminium Reduction Cells (Marco Stam, Mark Taylor, John Chen, Albert Mulder, and Renuka Rodrigo).
Novel Method of Measuring the Liquidus and Bath Temperature of Hall–Héroult Cells (Hans Bohner, V. Arora, and T.K. Nasipuri).
Analysis of a Potroom Performance Drift, from a Multivariate Point of View (Jayson Tessier, Carl Duchesne, Gary Tarcy, Claude Gauthier, and Gilles Dufour).
Experimental Designs for Use in the Aluminium Industry (Stephen Rutledge).
Practical Applications of the Continous Measurement of Individual Anode Currents in Hall–Heroult Cells (Roald Hvidsten, and Ketil Rye).
Experiments on Wireless Measurement of Anode Currents in Hall Cells (Daniel A. Steingart, James Evans, Paul K. Wright, and Donald P. Ziegler).
Smart Feeders at Alumar Plant (Haroldo Ferreira, Nilton Nagem, Carlos Braga, Pedro Leite, Bruno Coimbra, Eliezar Batista, Elisio Bessa, Edison Maia, Ciro Kato, and Joel Camara).
Breakthrough in Analysis of Electrolytic Bath Using Rietveld–XRD Method (Frank Feret).
Model Predictive Control of Superheat for Prebake Aluminum Production Cells (Zeng Shuiping, Li Jinhong, and Peng Qianqiang).
The Application of Data Mining Technology in the National Aluminum Test Base (WangXing Li, QingYun Zhao, ShiLin Qiu, and Qiang Li).
Discussion of Alumina Feeding Control Strategies (Qi Xiquan, Li Shujie, Wu Youwei, Ma Shaoxian, Mao Jihong, and Wang Dequan).
The Impact of Bath Ratio Control Improvements on Current Efficiency Increase (Thiago Simões, João Alberto Martins, Marcio Guimarães, and João Bosco Reis).
Aluminum Industry in Mid–East.
Aluminium Smelting Greenhouse Footprint and Sustainability (Jeffrey Keniry).
Development of Aluminum Production Capacity in the Middle East and Siberia (Halvor Kvande).
Rusals Expansion Based on Hydropower (Horst Peters).
DX Technology: The Development and the Way Forward (Abdulla Kalban, Yousuf Ali AlFarsi, and Abdelhamid Meghlaoui).
Alba Line 5 Expansion – Solutions for a Better Environment (Thierry Malard, and Maxime Depinoy).
Reduction Cell Modelling.
Optimization in Magnetic Modeling (Stéphane Wan Tang Kuan, Denis Jacquet, Thierry Tomasino, and Carlos Canutas De Wit).
Shallow Water Model for Aluminium Electrolysis Cells with Variable Top and Bottom (Valdis Bojarevics, and Koulis Pericleous).
Impact of the Vertical Potshell Deformation on the MHD Cell Stability Behavior of a 500kA Aluminum Electrolysis Cell (Marc Dupuis, Valdis Bojarevics, and Daniel Richard).
Comparison of Various Methods for Modeling the Metal–Bath Interface (Dagoberto Severo, Vanderlei Gusberti, Andre F. Schneider, Elton C. V. Pinto, and Vinko Potocnik).
Modeling and Measurement of Metal Pad Velocity in a 208 Ka End to End Prebaked Cells (Mohamed Doheim, Abdel El–Kersh, Nabil Kotb, Mohamed Ali, and M.O. Ibraheim).
Dynamics of the Gas Emission from Aluminum Electrolysis Cells (Laszlo Kiss, and Klara Vekony).
Freeze Thickness in the Aluminum Electro lysis Cells (Laszlo Kiss, and Véronique Dassylva–Raymond).
Application of Mathematical Methods to Optimize Aluminium Production in Pre–Baked Anode Cells (Alex Knizhnik, Alexandr A. Kusakov, Boris I. Zelberg, and Vaycheslav V. Veselkov).
Two–Dimensional Model of Melt Flows and Interface Instability in Aluminum Reduction Cells (Mehdi Kadkhodabeigi).
Cell Development Part II.
Last Development in AP50 Cell (Ben Benkahla, Yves Caratini, Hervé Mezin, Steve Renaudier, and S. Fardeau).
Fjardaal Smelter Project, Iceland – Modular Construction (Sam P. Maliha, Bernard Cloutier, Warren McKenzie, and Joe L. Wahba).
Successful Dry Restart of the Hamburg Smelter (Till Reek, Joerg Prepeneit, and David Eisma).
20 Years of Continues Improvements in TALUM Smelter (Cus Zlatko, and Avgust Sibila).
Faster Normalisation of Cells After Bath up (Ali Mohmad Al Zarouni, B. Kakkar, and Arvind Kumar).
Development of New Generation SY300 Technology (Kangjian Sun, Xiaodong Yang, Yafeng Liu, and Baoguo Chen).
Thyristor Rectifiers for Aluminium Plants with Advanced Freewheeling Control (Shripad Tambe, Wynand Lauwrens, and Markus Rechsteiner).
Alcoa′s Pathway to Reliability Excellence (Vincent C. Adorno, and Randy Heisler).
Fundamentals, New Technologies, Inert Anodes.
Technical Contributions of the Late Warren Haupin – A Review (Jay Bruggeman).
Top Heat Loss in Hall–Heroult Cells (Xian Chun Shen, Margaret Hyland, and Barry Welch).
Electrolysis of Aluminum in the Low Melting Electrolytes Based on Potassium Cryolite (Yurii Zaikov, Andrey Khramov, Vadim Kovrov, Vasily Kryukovsky, Alexey Apisarov, Olga Tkacheva, Oleg Chemesov, and Nikolay Shurov).
Influence of CaF2 on the Properties of the Low–Temperature Electrolyte Based on the KF–AlF3 (CR=1,3) System (Alexander Dedyukhin, Ale xey Apisarov, Alexander Redkin, Olga Tkacheva, and Yurii Zaikov).
Temperature of Primary Crystallization in Part of System Na3AlF6–K3AlF6–AlF3 (Wang Jiawei, Lai Yanqing, Tian Zhongliang, Li Jie, and Liu Yexiang).
Electrical Conductivity of (Na3AlF6–40 wt%K3AlF6) – AlF3 wt% Melts (Huang Youguo, Lai Yanqing, Tian Zhongliang, Li Jie, Liu Yexiang, and Yi Qingyu).
Chemical and Electrochemical Reactions in the Al–Al2O3–Na2SO4 System at 927°C (Xiao Yan, and Marshall R. Lanyon).
Effect of LiF on Liquidus Temperature, Density and Electrical Conductivity of Molten Cryolite (Hongmin Kan, Zhaowen Wang, Zhongning Shi, Yungang Ban, Bingliang Gao, Shaohua Yang, Xiaozhou Cao, Xianwei Hu, Shaoxian Ma, and Youwei Wu).
The Development of 85kA Three–Layer Electrolysis Cell for Refining of Aluminum (Hengchao Zhao, and Huimin Lu).
Cast Shop Technology.
Sustainability in the Casthouse.
Melting Furnaces, Technical Developments Reviewed and Thoughts for the Future (Barry Houghton, Stephen Augostine, and Graham Guest).
Metal Treatment Update (Bruno Maltais, Dominique Privé, Martin Taylor, and Marc–André Thibault).
Highest Efficiency and Economic Burner Concepts for the Metallurgical Industry (Michael Potesser, Burkhardt Holleis, Adrianus Hengelmolen, Helmut Antrekowitsch, and Davor Spoljaric).
Evaluation and Reduction of Potroom Bath Carryover to the Casthouse (Edward Williams, David DeYoung, Joe Martin, and Robert Levesque).
Understanding of the Mechanisms of Bath Carry–Over with Molten Aluminium in Smelters (Vincent Goutière, and Claude Dupuis).
Chloride Salt Injection to Replace Chlorine in the Alcoa A622 Degassing Process (Corleen Chesonis, and David DeYoung).
Casthouse Operation.
ICON: Pre–Treatment of Pot–Room Metal (Erik Aspen, Bjarne Ander