Dr. C. Otto & Comp. G.m.b.h.

Bam Bundesanstalt Fur Materialforschung Und-prufung

Kurt Osterloh

Wilhelm Danguillier

Wolfgang Grams

Paul Gernhardt

Siegfried Pohl

Steffen Rotsch

Karl Peter

Christian Hundeshagen

Uwe Ewert

Uwe Zscherpel

Iron ore pellets on a grid in a treatment chamber are hardened by contact with a heat treated, low calorific gas. The gas is generated in the gasification chamber of a slag bath generator. The generator receives a gasification agent and solid fuel that preferably further includes sulfur-binding materials, such as dolomite for generating a stream of low calorific gas. Inclined water-cooled pipes at the upper end of the slag bath generator extract liquid slag from the gas stream. The slag drips from the pipes into the slag bath generator. A mixing chamber receives the gas at a temperature of about 1450.degree. C passed beyond the inclined water-cooled pipes together with an air supply for heat treating the gas to a temperature of about 1100.degree. C. The heat treated gas is then passed into the treatment chamber for hardening the iron ore pellets contained therein.

Method for hardening iron ore pellets

Growing community of inventors

Bochum, Germany

Kurt Osterloh