Process for the manufacture of molded carbon bodies

Details Process for the manufacture of molded carbon bodies Process for the manufacture of molded carbon bodies

1984-06-29

1985-08-13

Dixon, William R.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

423448, 423449, 264 291, 264 295, 264 297, C01B 3102

Patent

active

045349495

ABSTRACT:
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.degree. 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.degree. C., the residues being converted into "green" coke. In the second step, the coke is heated up to at least 800.degree. C. at a heating rate, depending on the diameter d (m), of 1.2.times.1/d.sup.2 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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patent: 4190637 (1980-02-01), Kennedy
patent: 4219404 (1980-08-01), Dickakian
patent: 4379133 (1983-04-01), Zander et al.

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