# US 10,767,931 B2 · Sidewall with buckstay for a metallurgical furnace

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- Number: US 10,767,931 B2
- Document ID: US10767931B2
- Status: Granted
- Kind: B2
- Application number: 15/874,483
- Filed: 2018-01-18
- Published: 2019-07-18
- Granted: 2020-09-08
- Earliest claimed: 2018-01-18
- Assignees: Systems Spray-Cooled, Inc.
- Applicants: Systems Spray-Cooled, Inc
- Inventors: Scott A. Ferguson; Marina K. Temkina; Troy D. Ward
- Web page: https://patentgrep.com/patent/US10767931B2

## CPC

- F27D 1/12: incorporating cooling arrangements
- C21C 5/5211: {in an alternating current [AC] electric arc furnace}
- F27B 3/10: Details, accessories or equipment, e.g. dust-collectors, specially adapted for hearth-type furnaces
- F27D 1/0033: {Linings or walls comprising heat shields, e.g. heat shields}
- F27D 1/14: Supports for linings (supports for monolithic linings F27D1/10)
- F27D 1/145: {Assembling elements}
- F27D 11/08: Heating by electric discharge, e.g. arc discharge
- F27D 2001/0079: {Means to assemble at least two parts of a furnace or of any device or accessory associated to its use}
- F27D 2009/0016: {Water-spray}
- Y02P 10/20: Recycling
- F27D: DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- C21C: PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- F27B: FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

A sidewall for a metallurgical furnace and a metallurgical furnace having the same are described herein. In one example, a sidewall of a metallurgical furnace is provided that includes an outer wall, a hot plate and a buckstay. The hot plate is coupled in a spaced apart relation to the outer wall. The buckstay is mechanically coupled to the outer wall and the hot plate. The buckstay includes a buckstay web extending from a buckstay flange. The buckstay web includes a first end coupled to the buckstay flange, and a second end mechanically and movably coupled to the hot plate.

## Claims

### Claim 1

A sidewall of a metallurgical furnace, comprising:
an outer wall;
a hot plate coupled in a spaced apart relation to the outer wall; and
a buckstay mechanically coupled to the outer wall and the hot plate, the buckstay comprising:
a buckstay flange and
a buckstay web extending from the buckstay flange, the buckstay web comprising:
a first end coupled to the buckstay flange; and
a second end mechanically and movably coupled to the hot plate, wherein the buckstay web is spaced from the hot plate to define a qap between the hot plate and the buckstay web sufficient to allow coolant to freely flow between the hot plate and the buckstay web.

### Claim 2 (depends on 1)

The sidewall of claim 1 further comprising:
a bracket welded to the hot plate, the buckstay web moveably coupled to the bracket.

### Claim 3 (depends on 2)

The sidewall of claim 2, wherein the second end of the buckstay web is fastened to the bracket by a fastener.

### Claim 4 (depends on 1)

The sidewall of claim 1, wherein a portion of the buckstay web is welded to the hot plate.

### Claim 5 (depends on 4)

The sidewall of claim 4 further comprising:
an interior flange coupled to the buckstay web adjacent the portion of the buckstay web welded to the hot plate; and
a trough formed through or under the buckstay web, and below the interior flange.

### Claim 6 (depends on 1)

The sidewall of claim 1, wherein the buckstay flange extends tangentially to or concentric with the outer wall.

### Claim 7 (depends on 1)

The sidewall of claim 1 further comprising:
a plurality of spray nozzles positioned to spay coolant on an inner side of the hot plate.

### Claim 8 (depends on 1)

The sidewall of claim 1 further comprising:
a trough for receiving spent coolant disposed through or under the buckstay.

### Claim 9

A spray-cooled metallurgical furnace, comprising:
a body having a bottom section including a hearth lined with refractory brick and a sidewall; and
a roof disposed on a top flange of the sidewall, wherein the sidewall comprises:
an outer wall;
a hot plate; and
a buckstay mechanically coupled to the outer wall and the hot plate, the buckstay comprising:
a buckstay flange and
a buckstay web extending from the buckstay flange, the buckstay web comprising:
a first end coupled to the buckstay flange; and
a second end mechanically coupled to the hot plate, wherein at least a portion of the second end of the buckstay web is spaced from the hot plate to allow coolant present on the hot plate to flow between the second end of the buckstay web and the hot plate.

### Claim 10 (depends on 9)

The metallurgical furnace of claim 9 further comprising:
a fastener moveably coupling a bracket welded to the hot plate to the second end of the buckstay web.

### Claim 11 (depends on 10)

The metallurgical furnace of claim 10, wherein the bracket is welded to the hot plate.

### Claim 12 (depends on 9)

The metallurgical furnace of claim 9, wherein a portion of the buckstay web is welded the hot plate in a region of the buckstay web through which a coolant drainage trough is formed.

### Claim 13 (depends on 9)

The metallurgical furnace of claim 9, wherein the buckstay web extends perpendicularly from the buckstay flange.

### Claim 14 (depends on 9)

The metallurgical furnace of claim 9, wherein the buckstay web is oblique to the buckstay flange.

### Claim 15 (depends on 9)

The metallurgical furnace of claim 9, wherein the buckstay flange extends tangentially to or concentric with the outer wall.

### Claim 16 (depends on 9)

The metallurgical furnace of claim 9 further comprising:
one or more spray nozzles configured to spay coolant on an inner side of the hot plate.

### Claim 17 (depends on 9)

The metallurgical furnace of claim 9 further comprising:
a trough for receiving spent coolant at an end of the sidewall.

### Claim 18

A method for fabricating a sidewall of a metallurgical furnace, comprising:
coupling a buckstay in a spaced apart relation to a hot plate of a metallurgical furnace sidewall; and
coupling the buckstay to an outer wall of the metallurgical furnace sidewall.

### Claim 19 (depends on 18)

The method of claim 18 wherein coupling the buckstay to the hot plate comprises:
fastening a portion of the buckstay in a spaced apart relation to the hot plate; and
welding a strip of the buckstay proximate a coolant drainage trough formed through the buckstay to the hot plate.
