Copper cooling plate with multilayer protrusions comprising wear resistant material, for a blast furnace

Patent metadata

Field	Value
Publication number	US-11319604-B2
Application number	US-201616465667-A
Country	US
Kind code	B2
Filing date	Dec 30, 2016
Priority date	Dec 30, 2016
Publication date	May 3, 2022
Grant date	May 3, 2022

Abstract

A cooling plate for use in a blast furnace is described. The cooling plate has a copper body having an inner face containing ribs parallel therebetween, having first extremities and separated by grooves having second extremities. At least one of these grooves containing at least a part of a multilayer protrusion extending between its second extremities and having at least one layer made of a wear resistant material that increases locally the wear resistance of the neighboring ribs.

First claim

What is claimed is:

1. A cooling plate for a blast furnace, said cooling plate comprising a copper body having an inner face having a plurality of parallel ribs separated by grooves, the ribs having first extremities facing laterally away from the copper body, the grooves having second extremities facing laterally away from the copper body, wherein at least one of said grooves includes at least a part of a multilayer protrusion extending between said second extremities, the multilayer protrusion having at least two layers made of different materials, and wherein at least one of the two layers is made of a wear resistant material that increases locally the wear resistance of neighboring ribs.

2. The cooling plate according to claim 1 , wherein said wear resistant material is chosen from a group comprising a metal and a ceramic.

3. The cooling plate according to claim 2 , wherein that said metal is a wear-resistant steel or cast iron.

4. The cooling plate according to claim 2 , wherein said wear resistant ceramic is silicon carbide, an extruded silicon carbide or other refractory material with good resistant to spalling and high hardness.

5. The cooling plate according to claim 1 , wherein said inner face of said copper body comprises ribs having at least two different heights.

6. The cooling plate according to claim 1 , wherein said grooves have a dovetail cross-section.

7. A cooling plate for a blast furnace, said cooling plate comprising a copper body having an inner face having a plurality of parallel ribs separated by grooves, the ribs having first extremities facing laterally away from the copper body, the grooves having second extremities facing laterally away from the copper body, wherein at least one of said grooves includes at least a part of a multilayer protrusion extending between said second extremities and comprising at least one layer made of a wear resistant material that increases locally the wear resistance of neighboring ribs, wherein said multilayer protrusion comprises a first layer made of a material having a high thermal conductivity, and a second layer made of said wear resistant material and set on top of said first layer.

8. The cooling plate according to claim 7 , wherein said material of said first layer is chosen from a group comprising a high conductivity metal copper and a copper alloy.

9. The cooling plate according to claim 7 , wherein said multilayer protrusion is associated to a single groove.

10. The cooling plate according to claim 9 , wherein said multilayer protrusion further comprises a third layer sandwiched between said first and second layers and made of a material having a hardness intended for increasing hardness of said multilayer protrusion.

11. The cooling plate according to claim 10 , wherein said third layer is made of a ceramic with good resistance to spalling and high hardness.

12. The cooling plate according to claim 7 , wherein the first and second layers of said multilayer protrusion are respectively associated to two neighboring grooves.

13. The cooling plate according to claim 12 , wherein said first layer comprises a slot extending between said second extremities and comprising an insert made of a material having a hardness intended for increasing hardness of said first layer.

14. The cooling plate according to claim 13 , wherein said insert is made of a ceramic or a wear-resistant and/or heat-resistant steel.

15. The cooling plate according to claim 11 , wherein said ceramic with good resistance to spalling and high hardness comprises SiC or extruded SiC.

Assignees

• Arcelormittal

Inventors

• Herrero Blanco Ignacio

Classifications

• F27D1/12

  incorporating cooling arrangements · CPC title

• F27B1/24 Primary

  Cooling arrangements · CPC title

• F27D2009/0048

  incorporating conduits for the medium · CPC title

• F27D2009/0054

  adapted to retain formed bricks · CPC title

• B32B15/04

  comprising metal as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a bituminous or tarry layer B32B11/08; next to a water-setting substance layer B32B13/06; next to a glass layer B32B17/061; next to a cellulosic plastic layer B32B23/042)} · CPC title