Preparation of petroleum pitch

Details Preparation of petroleum pitch Preparation of petroleum pitch

1975-03-10

1977-08-02

O'Keefe, Veronica

Mineral oils: processes and products

Oxidation of mineral oils

To form asphalts, tars or pitches

208 5, 208 6, C10G 300

Patent

active

040394239

ABSTRACT:
A process having a particular sequence of steps, each under specified conditions, for preparing a petroleum pitch binder suitable for electrodes used in smelting aluminum is disclosed. In the essential steps of the invention a decant oil petroleum fraction is heat treated under pressure, the treated material is flashed to a lower pressure, and finally the material is oxy-activated under elevated temperature conditions to form a petroleum pitch having the desired properties.

REFERENCES:
patent: 3238116 (1966-03-01), Hamner et al.
patent: 3725240 (1973-04-01), Baum
patent: 3923633 (1975-12-01), Seuolt et al.

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