EP0069251A1 - Rinnenabdeckung zur Vermeidung von Wärmeverlusten bei metallurgischen Verfahren - Google Patents
Rinnenabdeckung zur Vermeidung von Wärmeverlusten bei metallurgischen Verfahren Download PDFInfo
- Publication number
- EP0069251A1 EP0069251A1 EP82105221A EP82105221A EP0069251A1 EP 0069251 A1 EP0069251 A1 EP 0069251A1 EP 82105221 A EP82105221 A EP 82105221A EP 82105221 A EP82105221 A EP 82105221A EP 0069251 A1 EP0069251 A1 EP 0069251A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cover
- refractory
- trough
- support member
- molten material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- 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
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/14—Charging or discharging liquid or molten material
- F27D3/145—Runners therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D45/00—Equipment for casting, not otherwise provided for
Definitions
- a trough cover comprised of a plurality of refractory ilned cover panels is used to enclose troughs carrying hot molten materials in order to protect the material from impurities which may fall into the trough and to contain the heat and gaseous emissions released by the molten material.
- an air curtain is used in conjunction with an air supply along one side of a runner while an exhaust assembly is provided along the other side in order to contain the heat and gaseous emissions from the molten metal in the trough.
- a refractory wall may be provided to protect the exhaust assembly from the hot gases. While emissions are controlled by this apparatus, it does not retain heat well or prevent debris or other impurities from entering the trough and is of a much more complex structure than the trough cover of the present invention.
- the present invention embodies a trough cover formed of a plurality of refractory lined panels, each panel being of a simple and sturdy yet lightweight construction and readily fabricated in various lengths and widths.
- the panels which provide standardized starting units, are easily fitted together to form a completed trough cover which, when placed over a trough, prevents the escape of heat and gaseous emissions released by molten material carried therein.
- the lightweight trough covers can be easily lifted when covering or uncovering the trough.
- a trough cover includes a plurality of cover panels joined together to form the top and downardly depending side walls. thereof, and is used to enclose a trough adapted to carry hot molten material such as iron.
- Each cover panel comprises a channel-shaped rigid support member and a refractory member, preferably of fiber material-type refractory, covering the entire interior surface of the cover which is exposed to the molten material.
- the support member comprises a base having two legs depending from the edges of the base and extending along the length thereof.
- a fastening means is used for securing the panels together to form the top and side walls of the cover such that an essentially continuous refractory lining is formed about the entire interior surface of the cover that is exposed to the molten material.
- the refractory member insulates the fastening means as well as the support member from : the molten material. This allows lighter weight materials such as sheet metal to be used in the construction of the support member.
- the trough cover comprises a plurality of cover panels 2 which form the top 3 and downwardly depending side walls 4 of the cover 1, to enclose a trough t, adapted to carry hot molten material m, such as iron.
- Each panel 2 comprises a channel-shaped rigid support member 5 and a refractor; member 6 covering the entire surface thereof which is exposed to the molten material.
- the refractory member 6 is fixed to the support member in such a manner that any attachment means therefor will be insulated from the hot molten material.
- pop rivets 7 and washers 8 may be used with the rivets 7 passing through the support member 5, the attachment means protected by the refractory member 6.
- each support member 5 has a base 11 and two legs 12 depending from the edges thereof and along the length of the base 11.
- the legs 12 provide rigidity for the support member 5.
- the entire interior surface 10 of the cover is formed by the refractory member 6, and a seal 13 is formed between the respective refractory members of a side wall 4 and the top 3 of the cover, with the fastening means maintaining the seal such that the interior surface of the trough comprises a substantially ]continuous refractory surface. continuous refractory surface.
- the panels 2 are joined together so that a substantially 90° angle exists between the side walls 4 and the top 3 with fastening means 9 connecting the base 11 of the side walls 4 with the legs 12 of the top 3.
- the legs 12 form a sustantially right angle with the base 11.
- Figure 2 illustrates the legs 12 as having an angle, A, greater than 90°, with the base 11 and forming a cover 1 having a generally trapezoidal cross section.
- the range of this base/leg angle is between about 90 to 150°.
- the legs 12 of each panel 2 used in a cover are bent to the same base/leg angle in order to simplify construction and assembly of the panels.
- Increasing the angle A allows a trough cover to span a larger trough without the need for additional cover panels in the top of the cover.
- each of the panels is about 4 to 6 feet in length and has a width of about 6 to 18 inches.
- additional cover panels are used in the top of the cover when the cover is being assembled.
- Typical spans for the covers are in the range of 18 to 48 inches, requiring approximately one to four panels being used in the top of the cover.
- each side wall of the cover is a single panel, however, their height may be increased in the same manner pro- viously described for increasing the width of the top.
- each panel 52 has a support member 55 with a base 61 and legs 62, a refractory member 56 and an attaching means for this member such as a pop rivet 57 and washer 58, and a fastening means 59, except that each leg 62 is provided with an inwardly directed flange 64 depending from the free end 65 of the leg 62.
- the flanges 64 are substantially parallel with the base 61 of each panel 52 and provide additional rigidity for the cover 51.
- the interior surface 60 of the cover is thus completely formed of refractory members 56, with seals 63 formed between contiguous such members.
- a handle such as a rod 56 is shown fastened to the flanges 64 of the panels 52 in the top 53 of the cover 51. This allows the cover 51 to be more easily grasped and lifted when covering or uncovering the trough
- the handle rod 66 is attached by conventional fastening means such as tack welding or by a bolt and nut. Preferably two handle rods are used per cover with the ends of each rod extending outwardly beyond the side walls (see figure 4).
- more than one cover is used to cover the length of a trough.
- the individual covers 51 are simply butted against one another across their widths, the refractory member 56 of the individual covers 51 forming an essentially continuous refractory lining, formed by the interior surfaces of the panels, along-the entire combined length of L he covers and about the entire surface of the covers exposed to the molten material in the trough t.
- the covers are simply placed over the trough and rest on the lips 1, thereof.
- a sand seal, s can be provided along the edge of the cover panel in contact with the lip, 1, of the trough, t, in order to fill in surface irregularities in the trough lip; thus, allowing a better seal between the trough and cover.
- the trough cover may be used with a variety of molten materials having high temperatures.
- the temperature of the iron is approximately 2800° F. with the temperature at the exposed surface of the refractory members of the cover panels in the top and side walls of the cover reaching approximately 2200° F.
- the refractory chosen for use in the refractory member should be capable of withstanding these elevated temperatures without deterioration.
- a fiber material-type refractory such as Fiberfrax is used (Fiberfrax is a registered trademark of The Carborundum Company for a ceramic fiber-type refractory material).
- other material such as thermal blankets or foundry cloth can also be used in combination with or in lieu of Fiberfrax depending upon the expected temperatures to be encountered during use of the trough cover.
- an alternate embodiment uses end legs and flanges on the panels for additional rigidity.
- the end legs 67 enclose the end of the support member 55 and is intermediate the legs 62 and depend from the base 61 thereof similar to the legs previously described.
- an inwardly directed end flange 68 can also be provided at the free end of each end leg 67.
- This end flange 68 is substantially parallel to the base 61 of the support member 55 and also provides additional rigidity thereto.
- the end flanges 68 can be tack welded or secured by other fastening means to the flanges 64 of the legs 62 of the cover.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Blast Furnaces (AREA)
- Furnace Charging Or Discharging (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US27831881A | 1981-06-29 | 1981-06-29 | |
| US278318 | 2002-10-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0069251A1 true EP0069251A1 (de) | 1983-01-12 |
Family
ID=23064535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP82105221A Withdrawn EP0069251A1 (de) | 1981-06-29 | 1982-06-15 | Rinnenabdeckung zur Vermeidung von Wärmeverlusten bei metallurgischen Verfahren |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0069251A1 (de) |
| JP (1) | JPS5849890A (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6291943B2 (ja) * | 2014-03-20 | 2018-03-14 | 新日鐵住金株式会社 | 高炉樋カバー |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4245820A (en) * | 1979-07-20 | 1981-01-20 | Wheeling-Pittsburgh Steel Corporation | Pipe curtain for pollution control hood |
| DE2943106A1 (de) * | 1979-10-25 | 1981-05-07 | Aardal Og Sunndal Verk A.S., Oslo | Kammerdeckel eines kammerringofens |
-
1982
- 1982-06-15 EP EP82105221A patent/EP0069251A1/de not_active Withdrawn
- 1982-06-29 JP JP11242982A patent/JPS5849890A/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4245820A (en) * | 1979-07-20 | 1981-01-20 | Wheeling-Pittsburgh Steel Corporation | Pipe curtain for pollution control hood |
| DE2943106A1 (de) * | 1979-10-25 | 1981-05-07 | Aardal Og Sunndal Verk A.S., Oslo | Kammerdeckel eines kammerringofens |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5849890A (ja) | 1983-03-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
| 17P | Request for examination filed |
Effective date: 19830114 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: STANDARD STEEL SPONGE, INC. |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 19841025 |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: TRUNZO, ARTHUR F. Inventor name: MEYERS, LEO J. |