Patent · US Expired

Process of treating sponge iron for protection against reoxidation and apparatus for carrying out the process

US4254167A · kind A · utility

10Cited by

5References

14Claims

0Family size

Assignee

Vereinigte Osterreichische Eisen- und Stahlwerke - Alpine Montan Aktiengesellschaft · AT

Inventors

Horst Sulzbacher · Leoben, AT
Kurt Stift · Leoben, AT
Gunther Saiger · Trofaiach, AT

Key dates

Filing date	Jul 14, 1978
Grant date	Mar 3, 1981
Priority date	—
Expiry date	Jul 14, 1998

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2991
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A process for treating sponge iron to protect it against reoxidation and/or corrosion during storage and transit comprising the steps of tumbling sponge iron which is in particle form with a pre-prepared blend of caustic lime powder and an adhesion promoting additive selected from the group consisting of iron oxide or mixtures thereof with iron to produce a coated product, the blend containing 1 to 20% by weight iron oxide; and then moistening the coated product with an amount of water less than the amount of water required for complete hydration of the caustic lime.

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