Development of Soderberg Carbon Electrodes Bonded with a Carbon Nanofbre Reinforced Coal-Tar Pitch
Faculty of Materials Science and Ceramics, ITMA Materials Technology, 33428 Llanera, Asturias/Spain
Revision 29.05.2018, 26.09.2018
Volume 11, Issue 1, Pages 63 - 67
Abstract
The operation of Electric Arc Furnaces (EAF) relies on the use of different types of carbon electrodes. Most of them are subjected to thermal treatments before use. However, Soderberg electrodes are formed in situ. Their carbon paste is fully transformed under operation. Soder berg paste is composed of calcined anthracite and petroleum coke, pitch being used as binder. This work evaluates the incorporation of Carbon Nanofbres (CNF) to coal-tar pitch for Soderberg paste production. The effects of this nano-addition have been studied both on the coal tar pitch alone and on the Soderberg paste mix. To carry out the study a reference formulation, composed of coal tar pitch, calcined anthracite and petroleum coke, was designed, processed and characterised.
Keywords
Soderberg electrodes, coal-tar pitch, carbon nanofbres
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