Patent · US Active

Electrode composition

US10560987B2 · kind B2 · utility

0Cited by

4References

29Claims

0Family size

Assignee

RHEINFELDEN CARBON GMBH & CO. KG · DE

Inventors

Alois J. Franke · Rheinfelden (Baden), DE
Robert O. Becker · Lowville, US
Johann Leye · Rheinfelden (Baden), DE

Key dates

Filing date	Mar 30, 2017
Grant date	Feb 11, 2020
Priority date	—
Expiry date	Mar 30, 2037

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2111/94
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The present invention relates to a self-calcining electrode material for electric arc furnaces, containing one or more carbon components and a binder, wherein the binder is hard bitumen and having a needle penetration at 25° C. according to DIN EN 1426 of <50 [per 0.1 mm] and/or a softening point (ring and ball) according to DIN EN 1 427 of at least 65° C. and/or having a density at 25° C. according to DIN EN 52004 of 0.5 to 2 g/cm3, wherein the electrode material has a PAH content of <500 ppm. The hard bitumen is preferably derived by flash distillation from soft and medium-hard bitumen types and has a high sulfur content.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.