電極を覆う石炭スラグ層の通電現象とアーク放電特性

概要

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The current conducting and the arc discharge characteristics through coal slag layers over the electrodes are experimentally studied. The molten slags of Taiheiyo coal (original), 5% of Fe_2O_3 added to the original in order to change the electron conductiveness, 5 and 10% of K_2SO_4, added simulating the seed materials to be absorbed, are tested. The electlochemical reaction between slag and anode and the segregations of metals in the cathode slag layer, which have large ionization tendencies occur in rather short time form 10 to 30 seconds. These phenomena give the increase of resistivity at the anode, while the decrease at the cathode and the different behaviors to the arcs on the respective electrodes. The current density at the arc spot themselves on the cathode are decided from the synchronized data of current and TV images. The order of 10 to 50 A/cm^2 are obtained depending on the slag materials.
社団法人日本機械学会の論文
1986-11-25