Patent · US Expired

Electrode arrangement as substitute bottom for an electrothermic slag smelting furnace

US6980580B2 · kind B2 · utility

5Cited by

10References

8Claims

0Family size

Assignee

ALCOA INC. · US

Inventors

Jan A. Aune · Ski, NO
Jon Brinch · Oslo, NO
Kai Johansen · Kristiansand, NO

Key dates

Filing date	Aug 23, 2003
Grant date	Dec 27, 2005
Priority date	—
Expiry date	Aug 23, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P10/25
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The electrode arrangement uses vertically oriented electrodes with side wall contacts for an electrothermic smelting furnace for aluminum production. The side wall contacts are radially moveable into the furnace to compensate for wear on the contacts. The side wall contacts can be hollow to allow a slag forming charge to be fed to the furnace.

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