US 2001/0033045 A1 · Method of charging metal carriers to a melt-down gasifying zone

Abstract

In a method of charging metal carriers which contain a portion of fines and are at least partially reduced to a melter gasifier in which a melt-down gasifying zone formed by a bed is maintained, the metal carriers and carbon carriers are fed into the melter gasifier above the level of the melt-down gasifying zone. The metal carriers descend to the melt-down gasifying zone and travel through the same forming a metal melt and producing a reducing gas by coal gasification. In order to prevent a partial discharge from the melter gasifier of the metal carriers, in particular of the fine particles thereof, when charging the same, feeding of the metal carriers into the interior of the melter gasifier is effected at a vertical distance below a dome (30) terminating the melter gasifier toward the top, gravitationally and under the formation of a strand (44), and the strand (44) is surrounded by a gas jacket (45) enclosing and accompanying the freely falling strand (44) from its level of origin (at 40) onwards over a section (46) of the fall, and in this section (46) the strand (44) is supported against expansion by the gas jacket (45).

Claims6

Dependent claims

(Amended) The plant according to claim 7, wherein that the downpipe (33) comprises a double jacket (34, 35) defining an annular gap cavity (36) and the gas supply means (38) opens into said annular gap cavity (36).

Dependencies are inferred from the claim text.

Facts

Application

09/883,176Filed 19 Jun 2001

Priority

AT A 1252/9611 Jul 1996

Published

25 Oct 2001

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

C21B 13/002
Introduction of iron oxide into a bath of molten iron containing a carbon reductant: reduction of iron ores by passing through a heated column of…
C21B 13/0026
Obtaining iron or steel in a molten state: introduction of iron oxide in the flame of a burner or a hot gas stream
C21B 13/14
Making spongy iron or liquid steel, by direct processes: multi-stage processes processes carried out in different vessels or furnaces
C21B 2100/44
Gas purification of exhaust gases to be recirculated or used in other metallurgical processes: removing particles, e.g. by scrubbing, dedusting

Method of charging metal carriers to a melt-down gasifying zone

Life of this patent

Method of charging metal carriers to a melt-down gasifying zone

Life of this patent

Abstract

Claims6