Patent · US Active

Process for producing a foamed slag on austenitic stainless melts in an electric arc furnace

US8409320B2 · kind B2 · utility

0Cited by

3References

2Claims

0Family size

Assignee

SMS SIEMAG AG · DE

Inventors

Johann Reichel · Mülheim an der Ruhr, DE
Lutz Rose · Goldkronach, DE

Key dates

Filing date	Apr 8, 2009
Grant date	Apr 2, 2013
Priority date	—
Expiry date	Jun 13, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P10/20
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A process for producing a foamed slag on austenitic stainless melts in an electric arc furnace. A mixture of metal oxides and carbon is introduced into the furnace, the metal oxide is reduced by the carbon below the slag at the metal/slag interface, and the resulting gases bring about the foaming of the slag by bubble formation. The mixture to be charged, which is added in the form of preforms such as briquets or pellets, contains iron oxide, iron carriers, carbon and the required binders in addition to nickel oxide.

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