Process and plant for producing binder-free hot briquettes

US4872906A · kind A · utility

Assignee

• Thyssen Stahl AG · DE

Inventors

• Rudolf Auth · Dorsten, DE
• Lothar Seidelmann · Duisburg, DE
• Heinz Maas · Neu-Anspach, DE

Key dates

• Filing date: Mar 16, 1988
• Grant date: Oct 10, 1989
• Expiry date: Mar 16, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22B1/245
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a process for producing binder-free hot briquets of finely particulate non-pyrophoric residual substances accumulating in the production and processing of iron and steel and containing substantially no combustible components, for use in smelting. The characterizing features of the invention are: fuel in a finely particulate form is admixed to the residual substances; a quantity of sensible heat is fed from outside to the mixture of residual substances and fuel, until the fuel ignites, the quantity of fuel added being such that the temperature of the residual substances reaches the range of 600.degree. to 900.degree. C.; and the residual substances are then immediately hot-briquetted without intermediate cooling at a temperature in the aforementioned range.