Patent ID: 7544316
Filing Date: 2009-06-09
Classification: B29C,C04B

Abstract:
1. A process for preparing a graphite article, the process comprising (a) mixing (i) a particulate fraction comprising at least about 35 weight percent coke, coal or mixtures thereof having a diameter such that a major fraction passes through a 25 mm mesh screen but not a 0.25 mm mesh screen, (ii) a pitch binder and (iii) carbon fibers, to form a stock blend; (b) extruding the stock blend to form a green stock; (c) baking the green stock to form a carbonized stock; and (d) graphitizing the carbonized stock by maintaining the carbonized stock at a temperature of at least about 2500° C., wherein the fibers are added to the particulate fraction and pitch binder after at least about 15% of the mix cycle is completed.