Melting apparatus for the production of steel

Patent metadata

Field	Value
Publication number	US-11338362-B2
Application number	US-201816627273-A
Country	US
Kind code	B2
Filing date	Jun 25, 2018
Priority date	Jun 29, 2017
Publication date	May 24, 2022
Grant date	May 24, 2022

Abstract

A melting apparatus for steel production includes a support structure to support a shell for the production and tapping of steel, and a source or zone for the emission of fumes resulting from the tapping of the steel from the shell. The melting apparatus also includes a tapping hood integrated into the support structure and provided with a suction mouth positioned directly above the zone for the emission of fumes, the shell is provided with a bottom wall in which an E.B.T. is provided for tapping the steel.

First claim

The invention claimed is:

1. A melting apparatus for steel production, the melting apparatus comprising:
a support structure to support a shell for the production and tapping of steel, and a source or zone for an emission of fumes resulting from the tapping of the steel from said shell;
a tapping hood integrated into the support structure and provided with a suction mouth positioned directly above the source or zone for the emission of fumes, said shell being provided with a bottom wall in which an E.B.T. (Eccentric Bottom Tap-hole) for tapping the steel is positioned inside said tapping hood,
wherein said shell comprises a lateral wall that extends transversely to the bottom wall,
wherein said E.B.T. (Eccentric Bottom Tap-hole) is located in a connection zone between said bottom wall and said lateral wall, and
wherein said tapping hood is positioned directly above a container to collect the tapped steel.

2. The melting apparatus as in claim 1 , wherein said tapping hood comprises at least one suction pipe connectable to a suction line of the fumes coming from the fume emission zone.

3. The melting apparatus as in claim 2 , comprising a main fume suction line disposed at least near said shell to suck up the fumes exiting from the latter, said main fume suction line being independent from the fume suction line from said tapping hood.

4. The melting apparatus as in claim 2 , wherein said fume suction line is connectable to the suction pipe of said tapping hood by means of a mobile coupling device.

5. The melting apparatus as in claim 1 , wherein said support structure comprises at least a mobile platform to support the shell and with which said tapping hood is associated.

6. The melting apparatus as in claim 5 , wherein said mobile platform comprises a support beam on which said tapping hood is integrated.

7. The melting apparatus as in claim 6 , wherein said support beam has a shape complementary to the shape of the tapping hood.

8. The melting apparatus as in claim 1 , wherein said tapping hood is positioned at least partly below a level of a fixed platform, the fixed platform forming the base of the melting apparatus.

9. The melting apparatus as in claim 1 , wherein the tapping hood further comprises a suction mouth for receiving fumes positioned directly above a fume emission zone and configured to be integrated with a support structure of the melting apparatus, wherein said tapping hood further comprises an E.B.T. (Eccentric Bottom Tap-hole) positioned therein, said tapping hood having a hollow structure and at least a first upper wall and a pair of opposite lateral walls, wherein said suction mouth is made in a lower zone defined by said walls and occupies a lower surface of the tapping hood.

Assignees

• Danieli Off Mecc

Inventors

• Bevilacqua Massimo
• Bertolissio Arrigo

Classifications

• F27D17/304

  specially adapted for electric arc furnaces · CPC title

• F27D17/302

  Constructional details of ancillary components, e.g. waste gas conduits or seals · CPC title

• F27D17/30

  Arrangements for extraction or collection of waste gases; Hoods therefor · CPC title

• B08B15/02 Primary

  using chambers or hoods covering the area {(B08B15/002 takes precedence)} · CPC title

• F27B3/12

  Working chambers or casings; Supports therefor · CPC title