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Determination of the allowable graphite amount of a composite electrode for an electric arc furnace
Author(s) -
Gertsyk Svetlana Isaakovna,
Vladimirov Viktor Alekseyevich
Publication year - 1992
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199200495
Subject(s) - electrode , graphite , electrical engineering , electric arc , electric arc furnace , analytical chemistry (journal) , chemistry , materials science , composite material , metallurgy , engineering , chromatography
Distribution of heat loads along the length and perimeter of electrodes in terms of the nominal power of transformer, optical characteristics of surfaces taking part in heat exchange and geometric dimensions of the furnace and electrodes has been obtained on the basis of mathematical simulation of processes of heat transfer in working volume of an electric arc furnace, the screening of radiation by electrodes being taken into account. The results obtained give an opportunity of determining the minimal permissible length of the composite electrode graphite part for furnaces with various nominal power transformers. The minimal permissible length of electrode‐consumed graphite part is in the range of 80–100 cm for an 100‐t electric arc furnace with the transformer of nominal power equal to 75 or 90 MVA. Decrease of the length of electrode graphite part will lead to damage of cooled metal part due to water burn‐out.