Patent · US Expired

Process for reducing the iron content of CaO-rich slags formed during the desulphurization of crude iron

US4431444A · kind A · utility

1Cited by

4References

7Claims

0Family size

Assignee

SKW Trostberg Aktiengesellschaft · DE

Inventors

Rudolf HAMMER · Dinslaken, DE
Walter Meichsner · Krefeld, DE
Heinrich Rellermeyer

Key dates

Filing date	Jul 23, 1982
Grant date	Feb 14, 1984
Priority date	—
Expiry date	Jul 23, 2002

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02W30/50
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A process is described and claimed for reducing the iron content of a CaO-rich slag which is formed during the desulphurization of molten crude iron which comprises adding finely-ground fluorspar to the melt, in the ladle, or adding it to the lade prior to adding the crude iron thereto, in an amount such that the slag is not rendered fluid.

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