Patent · US Expired

Operating method and device for a shaft furnace

US6187258A · kind A · utility

1Cited by

3References

20Claims

0Family size

Assignee

Messer Griesheim GmbH · DE

Inventors

Ralf Hamberger · Kempen, DE
Juergen Schmidt · Goldkronach, DE
Gerhard Von Hoesslin · Düsseldorf, DE

Key dates

Filing date	May 11, 1999
Grant date	Feb 13, 2001
Priority date	—
Expiry date	May 11, 2019

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF27B1/16
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

A method for operating a blast furnace includes feeding metallic charge materials, alloy elements and energy carriers in the upper part of the furnace shaft. An oxidizing agent is fed in the lower part of the shaft. Filler material, namely, alloy elements, metal chips, carbon, sands, dust are fed individually or in combination into the melting zone in at least one burst jet. Fuels may be introduced additionally into the first jet. The oxygen is fed at a high speed into the melting zone in at least one separate jet and the conditions of introducing the materials in the first jet and the oxygen in the second jet are controlled so that no flame can be formed.

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