Patent · US Expired

Apparatus for preparing binder-free hot-briquets

US4645184A · kind A · utility

3Cited by

3References

10Claims

0Family size

Assignee

Thyssen Aktiengesellschaft · DE

Inventors

Heinrich Rellermeyer
Werner Kaas · Dinslaken, DE

Key dates

Filing date	May 16, 1985
Grant date	Feb 24, 1987
Priority date	—
Expiry date	May 16, 2005

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S75/961
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The invention relates to a process and an apparatus for preparing binder-free hot-briquets for smelting purposes from ferrous pyrophorous, finely divided solids, such as dry steelmaking-filter dust or slightly granular sponge iron from direct-reduction plants. Before the briquetting stage, oxidizing gas is blown at a temperature of more than 200.degree. C. through the finely divided dry solid containing more than 4% by weight of metallic resin. The flow rate of this gas is controlled in such a way that oxidation of some of the metallic iron raises the temperature of the finely divided solid to 450.degree. C. to 650.degree. C. This is followed by hot-briquetting.

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