Determination for amount of pitch in formula of graphite electrode based on calculation of coke adsorption
Ru Jia · Carbon Techniques · 2010
The amount of pitch is controlled strictly during the production of graphite electrode, which has a serious effect on the quality of the graphite electrode. Some methods for judging the amount of pitch in the formula were applied in carbon field, including the determination for the volatile content in carbon paste and the elongation value of the paste, indirectly judging that based on extrusion pressure, smooth condition of the electrode surface and whether there is lamination crack in the green electrode interior. In this paper, the amount of pitch in the formula was calculated based on the tested results of the coke adsorption to transformer oil by the powerfully calculated function of Excel sub-unit, which can help to determine the amount of pitch.