Patent · US Expired

Withdrawal device for a shaft furnace

US6280181A · kind A · utility

0Cited by

3References

10Claims

0Family size

Assignee

Deutsche Voest-Alpine Industrieanlagenbau GmbH · DE

Inventors

Martin Schmidt · Gmunden, AT
Herbert Lassnig · Ansfelden, AT
Johann Wurm · Linz, AT
Kurt Wieder · Linz, AT
Georg Aichinger · Ansfelden, AT
Josef Ziegler · Windischgarsten, AT

Key dates

Filing date	Aug 16, 2000
Grant date	Aug 28, 2001
Priority date	—
Expiry date	Aug 16, 2020

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF27D3/08
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

The invention relates to a shaft furnace (1), in particular a direct-reduction shaft furnace, having a bed (2) of lumpy material, in particular lumpy material containing iron oxide and/or iron sponge, having worm conveyors (3) which penetrate through the shell of the shaft furnace for discharging the lumpy material from the shaft furnace (1), which conveyors are arranged above the base area of the shaft furnace (1) and are mounted in the shell of the shaft furnace.

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