| 摘要 |
<p>Process for continuous graphitisation, by a direct Joule effect, of long carbon-containing products arranged vertically in a furnace as a column, under an axial stress, the said column 28 being surrounded by carbon-containing particles 40 contained by a peripheral shell 41, in which process the column 28 is moved gradually upwards while the carbon-containing particles 40 descend countercurrentwise under gravity along the column, each of the products constituting the column passing successively through an entry zone, a zone of gradual increase in temperature by heat exchange with the graphitised hot carbon- containing particles, until the temperature of graphitisation which is simultaneous with the carbon-containing particles is reached, a zone for cooling by heat exchange with the cold carbon-containing particles and an exit zone, and in that, on the one hand, the graphitised long products 57 are withdrawn at the upper part of the furnace and, on the other hand, the graphitised carbon-containing particles are withdrawn at the lower part 50 of the furnace. According to this process, the source of current responsible for heating the column by a Joule effect is connected at at least one point 30 to the lower part of the column and at a point 48 to the upper part of the column. <IMAGE></p> |
