METHOD FOR BAKING OR CALCINING SHAPED CARBON BODIES IN AN ANNULAR FURNACE

摘要

The invention relates to a method for calcining and baking shaped carbon bodies, in particular carbon or graphite electrodes in annular furnaces. The method for baking or calcining shaped carbon bodies that are covered with packing coke takes place in an annular furnace at temperatures of over 900 ~ C, whereby the packing coke is additionally covered with a material containing CaO and large amounts of cristobalite and/or tridymite, with a CaO content o f between 1.5 and 10 wt % and an SiO2 content of between 90 and 98.5 wt %.