EFFECT OF ULTRAFINE PULVERIZATION ON THE CRYSTAL STRUCTURE AND GRAPHITABILITY OF CARBONACEOUS FILLERS

摘要

In the process of ultrafine pulverization of graphite MPG and coke KNPS in a highly loaded vibrational mill at doses of mechanical energy 15-20 kJ/g we produced powders with a particle size of 0.4-0.9 μm. The pulverization process is accompanied by an insignificant increase in the interlayer spacing and a decrease in the height and diameter of microcrystallites. Annealing of pulverized coke samples at 2800 ℃ leads to the graphitization of coke. For artificial graphite MPG the defects produced by mechanical action are annealed at 2800℃ only partially.