| 摘要 |
A process for the manufacture of molded carbon bodies directly from high-boiling aromatic hydrocarbon fractions derived from coal or mineral oil, without additional binding agents and without using high pressures, is disclosed. Molds are filled with the starting material, distillation residues from the working-up of coal tar or pyrolysis products, these residues having a softening point (KS) in excess of 40 DEG C. and a quinoline-insoluble content (QI)<1.0%, and being in the liquid state, or in the solid state, and are heated, in the first step up to 550 DEG C., the residues being converted into "green" coke. In the second step, the coke is heated up to at least 800 DEG C. at a heating rate, depending on the diameter d (m), of 1.2x1/d2 K/day. The molded bodies can be impregnated and graphitized. They are distinguished by high electrical conductivity, low thermal expansion, and high strength in the axial direction.
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