Process for the preparation of a feedstock for carbon artifact manufacture.

摘要

An isotropic carbonaceous pitch is fluxed, preferably with an organic liquid to render the pitch fluid. The fluxed pitch is introduced into a heating zone (2) maintained in the range 350 DEG C to 450 DEG C to heat soak the fluxed pitch. Some of the fluxed pitch is drawn off, after an average residence time of 30 to 300 minutes, from the heating zone (2) and transferred to a cooling zone (6). The cooling zone temperature is above the freezing point of the fluxed pitch but below the temperature in heating zone (2). Any solids suspended in the fluxed pitch after the heat soaking and cooling are removed in a filtering zone (14) to give a fluid pitch. The fluid pitch is treated with one or more anti-solvent organic compounds in a zone (17) to precipitate at least a portion of the pitch free of quinoline-insoluble solids. The precipitated portion is collected as the required feedstock.