Cooling box for a shaft furnace

Patent metadata

Field	Value
Publication number	US-11535904-B2
Application number	US-201917263730-A
Country	US
Kind code	B2
Filing date	Jul 26, 2019
Priority date	Aug 1, 2018
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

A cooling box for a metallurgical furnace including an elongated hollow body extending from a front end, to an opposite rear end, the rear end being, in use, connected to a wall of the furnace; the body includes an inner chamber having a cooling circuit configured to receive a flow of coolant fluid therein between at least one inlet and at least one outlet; the cooling box further including at least one partition plate fitted in the inner chamber through a form-fit connection to form the cooling circuit.

First claim

The invention claimed is:

1. A cooling box for a metallurgical furnace comprising:
an elongated hollow body extending from a front end, to an opposite rear end, said rear end being, in use, connected to a wall of the furnace;
the body having external walls comprising a top wall, an opposite bottom wall, and peripheral walls connecting edges of the top and bottom walls of the body;
the body further comprising an inner chamber having a cooling circuit configured to receive a flow of coolant fluid therein between at least one inlet and at least one outlet;
said cooling box further comprising at least one partition plate fitted in the inner chamber through a form-fit connection to form said cooling circuit, wherein the at least one partition plate extends from the top wall to the bottom wall;
the top and bottom walls respectively comprising at least one elongated slot facing one another to receive the at least one partition plate.

2. The cooling box according to claim 1 , wherein the rear end of the cooling box comprises a rear wall with an opening sealed by a metallic cover plate.

3. The cooling box according to claim 2 , wherein the cover plate has at least one inlet port and at least one outlet port, respectively in communication with the inlet and outlet of the inner chamber.

4. The cooling box according to claim 3 , wherein the at least one partition plate is secured inside the inner chamber by the cover plate.

5. The cooling box according to claim 1 , wherein the at least one partition plate comprises tongues corresponding to the elongated slots of the top and bottom walls, in order to engage the partition plate with the top and bottom walls.

6. The cooling box according to claim 1 , wherein the at least one partition plate comprises an aperture to let the coolant fluid through the partition plate.

7. The cooling box according to claim 1 , wherein the at least one partition plate comprises a U-shaped element.

8. The cooling box according to claim 7 , wherein the top and bottom walls have a stepped surface with a distal face and a proximal face forming an abutment step for the at least one partition plate.

9. The cooling box according to claim 2 , wherein the cooling box further comprises a gasket between the rear wall and the cover plate.

Assignees

• Wurth Paul Sa
• Paul Wurth Italia S P A

Inventors

• Olivieri Stefano
• Micheletti Lorenzo
• Cravino Fabio

Classifications

• F27D2009/0021

  with the parallel tube parts close to each other, e.g. a serpentine · CPC title

• F27B1/24

  Cooling arrangements · CPC title

• C21B7/106 Primary

  Cooling of the furnace bottom · CPC title

• F27D1/12

  incorporating cooling arrangements · CPC title

• F27D2009/0043

  Insert type waterbox, e.g. cylindrical or flat type · CPC title