Effects of physical properties of anode raw materials on the paste compaction behavior. Smith, M.A., An Evaluation of the Binder Matrix in Prebaked Carbon Anodes Used for Aluminum Production, 1991, University of Auckland.Īzari, K., et al. 2007, Ecole Polytechnique Fédérale de Lausane. Tordai, T., Anode dusting during the electrolytic production of aluminium. Essential Readings in Light Metals: Electrode Technology for Aluminum Production, Volume 4, 2001: p. ![]() Dreyer, Impact of coke calcination level and anode baking temperature on anode properties. Thesis, Loughborough University of Technology. Ogden, G.N., The Quality of Binder-filler Interfaces in Carbon Electrodes. Knudsen, M., The law of the molecular flow and viscosity of gases moving through tubes. Rhedey, P., A review of Factors Affecting Carbon Anode Consumption in Electrolytic Production of Aluminum. Practical air reactivity impacts on anode performance. Effects of Microstructural Characteristics on Anode Reactivity. Rey Boero, J.F., Studies on anode reactivity to oxidant gases. Gas reactivity inside indus trial anodes. Sub-surface carboxy reactivity testing of anode carbon. Sub-surface carbon dioxide reaction in anodes. The reactivity of the anode and its constituents was assessed separately and their effect on dusting phenomenon was discussed. real density, crystallite size and specific surface area, were measured. The microstructural features of the samples, i.e. The air and CO 2 reactivities were evaluated using thermo-gravimetric analysis and the standard reactivity test of R&D Carbon, ISO Standard 12981-1. The present work aims at elucidating this phenomenon by studying the air and CO 2 reactivities of the prebaked carbon anode and also of its constituents. ![]() More precisely, it is believed that CO 2 and O 2 preferentially attack the baked pitch (pitch coke) resulting in detachment of coke and butt particles in the form of dust. These reactions are considered as being the main causes of dusting phenomenon in the electrolysis bath. The balance between increase of porosity and decrease in mechanical strength during activation is critical for developing new porous types of carbon materials in particular for carbon clothes and this can only be achieved by a careful control of the gasification reaction.Carbon anode, used in the Hall-Héroult process, is subject to both air oxidation and carboxy gasification by CO 2. Proper control of gasification reactions is also of prime importance in manufacturing carbonaceous adsorbents like granular activated carbon clothes of high adsorption characteristics. Furthermore a great interest of aluminium producers 2 2 is 10 extending the lifetime of carbon electrodes in alumina electrolysis which primarily depends on reducing their consumption rates by air or carbon dioxide. Refractory applications of carbon in furnace linings, seals and vanes, as well as the use of carbon-carbon or carbon-ceramic composites in struc tures able to withstand corrosion at high temperature require a better understanding of the fundamentals involved in carbon-oxidizing gas (02' CO, H 0) reactions. Although these two objectives look somewhat contradictory, they are part of the general topics of understanding gasification reactivity of carbon. Basi cally there are two major issues in controlling the reactivity of carbon: i) reduction of the gasification rate of carbon materials in hostile environment ii) increase of the gasification rate in order to utilize carbonaceous compounds more effectively. During the last decade there has been a renewed interest in under standing from a fundamental point of view the gasification of carbon.
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