GB1603400A - Shields for slide gates - Google Patents
Shields for slide gates Download PDFInfo
- Publication number
- GB1603400A GB1603400A GB16498/77A GB1649877A GB1603400A GB 1603400 A GB1603400 A GB 1603400A GB 16498/77 A GB16498/77 A GB 16498/77A GB 1649877 A GB1649877 A GB 1649877A GB 1603400 A GB1603400 A GB 1603400A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shield
- gate valve
- sliding gate
- cover
- holes
- 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.)
- Expired
Links
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 239000011230 binding agent Substances 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 239000011490 mineral wool Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 229920001353 Dextrin Polymers 0.000 description 1
- 239000004375 Dextrin Substances 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 235000019425 dextrin Nutrition 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 description 1
- -1 grog Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001206 natural gum Polymers 0.000 description 1
- 239000010450 olivine Substances 0.000 description 1
- 229910052609 olivine Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/14—Closures
- B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Continuous Casting (AREA)
- Ceramic Products (AREA)
Description
(54) SHIELDS FOR SLIDE GATES
(71) We, FOSECO TIR. DING A. G., a
Swiss Company of Langenjohnstrasse 9,7000
Chur, Switzerland, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be parti cularly described in and by the following statement :- The invention relates to shields for sliding gates valves used in metallurgical pouring vesses, such as ladles, and especially to the coverings of such shields to protect them, the sliding gate valves and the vessel from the effects of heat.
It has been appreciated that the heat from molten metal located in a molten metal holding vessel below the pouring vessel can cause early failure of the metal parts of the sliding gate valve equipment and attempts have been made to keep their temperature down by using a fibrous refractory lining formed in situ or by forced air; neither however is satisfactory.
According to the invention, there is provided a sliding gate valve heat shield having
secured to one side thereof a preformed replaceable cover formed of a refractory heat insulating composition.
The invention also provides a sliding gate valve for a metallurgical pouring vessel having a shield according to the invention and a metallurgical pouring vessel having a sliding gate valve and, positioned outside of the slide gate, a shield according to the invention.
The cover secured to the shield will include one or more apertures therethrough to correspond with a hole or holes in the shield to be located axially with respect to a metal pouring hole or holes of the sliding gate valve.
Preferably the cover of the shield comprises a plurality of, preferably two, interengageable or interfitting parts e. g. platelets. Where the cover comprises two parts each may have an aperture to be located axially with respect to a corresponding one of the usual two metal pouring holes in the shield.
The cover is preferably formed of the following ingredients (parts by weight):
refractory filler 60-80 %, most advantageously 70-75 % inorganic fibre 8-20 po, most advantageously 10-16 % binder 220 xi, most advantageously 8-15% The refractory filler is preferably selected from silica sand, silica flour, zircon, alumina, olivine, grog, magnesia, burnt dolomite and the like. The inorganic fibre is preferably a mineral wool, rock wool, slag wool, calcium silicate fibre or aluminosilicate fibre. The binder is preferably selected from organic binders such as natural gums, e. g. dextrin or starch, or synthetic resins such as urea formaldehyde or phenol formaldehyde; and inorganic binders such as sodiun silicate, a clay or a colloidal oxide hydrosol. Organic fibres such as paper may be present and other additives, e. g. flocculants, may also be included.
An embodiment of the invention will now be described with reference to the accompanying drawings, in which:
Figure I is an underneath plan view of a slide gate shield mounted below a ladle (not shown) ;
Figure 2 is a sectional view taken on lines II-II of Figure 1 ; and
Figure 3 is a sectional view taken on lines III-III of Figure I.
The sliding gate valve shield shown in
Figure I comprises a ferrous metal disc I having a perimeter wall la and two passageways 2 through which molten metal can be poured. The disc I is part of an assembly, only part of which is shown, and is held by means inter alia of springs 3 (Figures 2 and 3), to the underside of a ladle, not shown.
The sliding gate valve mechanism, also not shown, is present between the shield and the ladle. A refractory body 12 (Figures 2 and 3) is cast behind the disc I and has holes in alignment with the passageways 2, and the sides of the passageways 2 are lined with a wear-resistant refractory lin- ing 4 within the body 12.
Four metal retaining clips 5,5a are mounted about the disc I adjacent the periphery.
Each of the three clips 5 has a floor and upstanding wall together with a roof 6 and is welded to the disc. The remaining clip 5a, having a roof 6a, is mounted on a shaft 5b and may be secured to the disc by means of a bolt 7.
Two semi-circular platelets are mounted on the underside of the disc 1, and together define a cover for the shield. The platelets 8 are about 30mm thick. Each of the platelets 8 has a hole 9, (Figure 2), adapted to overlie a respective passageway 2 in the disc 1. Three flat side portions 19 are spaced about the curved side of each platelet so that when the platelets are assemble on the disc each flat portion 19 is received in a respective clip 5, 5a. Also the mating surfaces 10 of the platelets 8 are incline at an angle of 45'so that, as shown in
Figure 2, the two platelets can be tightly fitted together without any clearance between them. The platelets 8 each contain a reinforcing wire mesh 11.
The platelets 8 are fitted together on the disc 1 by being received in the clips 5,5a and then the bolt 7 is tightened to urge the clip 5a to lock the platelets in position. The platelets 8 are each formed of a refractory heat insulating material according to the following composition in which parts are by weight:
refractory filler, e. g. silica flour 70-75 % inorganic fibre, e. g. mineral wool 12-16% inorganic binder, e. g. a clay 6-8 % organic binder, e. g. a resin 47 Ó organic fibre, e. g. paper 0.5-3% noccuiant 0.5-2%
The platelets are made by mixing the ingredients with water into an aqueous slurry which is then cast in a mould of a suitable shape, a wire mesh 11 being present in the mould to reinforce each platelet. The formed platelets are mounted on the slide gate shield and held there by the clips 5,5a. The covered shield is then fitted to the ladle. In use when the ladle is moved towards, for example, a tundish, the cover of the shield protects both the shield and other adjacent parts of the ladle assembly from the radiant heat of the molten metal, and keeps down the temperature of the parts, so pro ! onging their) ife. For example, the springs 3 have a much longer life, because the temperature of the springs only rises to about 120'C, instead of 600 C as is the case when a shield without a preformed replaceable cover is used.
The cover of the shield is preferably replace after each emptying of the pouring vessel. The cover provides good insulation and gradual deterioration of the insu ! ation is prevented by replacement of the cover at suitable intervals. Replacement is easy and the cover may be inexpensive. In particular replacement of the cover, even at relatively frequent intervals, is easier and cheaper than periodic repfacement or repair, necessitated by inadequate insulation, of the sliding gate valve or means by which the slide gate is held to the pouring vessel.
Also by maintaining good insulation the risk of the sliding gate valve mechanism jamming is minimised.
Claims (8)
1. A sliding gate valve heat shield having secured to one side thereof a preformed replaceable cover formed of a refractory heat insulating composition.
2. A shield according to claim I in which the cover comprises a plurality of interfitting parts.
3. A shield according to claim I or claim 2 in which the composition of the cover comprises 60 to 80% by weight of refractory filler, 8 to 20% by weight of inorganic fibre and 2 to 20 % by weight of binder.
4. A shield according to any preceding claim in which the cover is releasably secured to the shield by metal clips.
5. A sliding gate valve heat shield substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.
6. A sliding gate valve for a metallurgical pouring vessel having a shield according to any preceding claim.
7. A metallurgical pouring vessel having a sliding gate valve according to claim 6.
8. A vessel according to claim 7 in which the shield for the sliding gate valve has holes locatable axially with respect to a metal pouring hole or holes of the sliding gate valve and the cover of the shield has apertures therethrough corresponding with the holes in the shield.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB16498/77A GB1603400A (en) | 1977-04-20 | 1977-04-20 | Shields for slide gates |
| CA301,435A CA1126927A (en) | 1977-04-20 | 1978-04-19 | Shields for slide gates |
| IT67893/78A IT1156970B (en) | 1977-04-20 | 1978-04-19 | SHIELD FOR DRAWERS WITH DRAWER OF METALLURGIC CASTING CONTAINERS |
| BR7802436A BR7802436A (en) | 1977-04-20 | 1978-04-19 | PROTECTOR FOR A CURRENT BEAM OF METALLURGIC LEAKAGE RECEPTACLE, BEHAVIOR AND RECEPTACLE |
| SE7804489A SE7804489L (en) | 1977-04-20 | 1978-04-19 | PROTECTION FOR SLIDE VALVE FOR MOLDINGS AND THE LIKE |
| ZA00782260A ZA782260B (en) | 1977-04-20 | 1978-04-20 | Shields for slide gates |
| DE2817347A DE2817347C2 (en) | 1977-04-20 | 1978-04-20 | Shielding for a slide valve on a pouring vessel |
| FR7811658A FR2387718A1 (en) | 1977-04-20 | 1978-04-20 | PROTECTIVE SHEET FOR DRAWER BUSETTES |
| JP4760478A JPS53130235A (en) | 1977-04-20 | 1978-04-20 | Protector for slide gate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB16498/77A GB1603400A (en) | 1977-04-20 | 1977-04-20 | Shields for slide gates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1603400A true GB1603400A (en) | 1981-11-25 |
Family
ID=10078423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16498/77A Expired GB1603400A (en) | 1977-04-20 | 1977-04-20 | Shields for slide gates |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS53130235A (en) |
| BR (1) | BR7802436A (en) |
| CA (1) | CA1126927A (en) |
| DE (1) | DE2817347C2 (en) |
| FR (1) | FR2387718A1 (en) |
| GB (1) | GB1603400A (en) |
| IT (1) | IT1156970B (en) |
| SE (1) | SE7804489L (en) |
| ZA (1) | ZA782260B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3230107A1 (en) * | 1982-08-13 | 1984-03-01 | Raimund Dipl.-Ing. 6238 Hofheim Brückner | USE OF CERAMIC FIBER MATERIAL IN FIREPROOF WEARING PARTS OF SLIDING CLOSURES FOR CONTAINERS CONTAINING LIQUID METAL MELT AND SLIDING CLOSURE WITH FIRE-RESISTANT WEARING PARTS MADE OF CERAMIC FAS |
| DE68915496T2 (en) * | 1988-09-07 | 1994-11-03 | Daido Steel Co Ltd | Device for the production of metal powder. |
| CN107008890A (en) * | 2016-01-27 | 2017-08-04 | 鞍钢股份有限公司 | Method for reducing burning loss of acid-soluble aluminum in tundish |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1908695U (en) * | 1964-08-07 | 1965-01-21 | Stoecker & Kunz G M B H | FIRE-RESISTANT POURING STONE FOR POURS, INTERMEDIATE CONTAINERS AND THE LIKE. |
| US3898416A (en) * | 1973-09-07 | 1975-08-05 | Combustion Eng | Method and apparatus for the banding of objects |
| NL7413435A (en) * | 1973-10-12 | 1975-04-15 | Uss Eng & Consult | PROCEDURE FOR INSERTING PARTICLES INTO THE BORE OF A NOZZLE BEFORE CASTING THE NOZZLE MOLTEN METAL. |
| DE2364977B2 (en) * | 1973-12-28 | 1976-08-12 | LID WITH A PASTING OPENING FOR DISTRIBUTION DRUM IN CONTINUOUS CASTING PLANTS |
-
1977
- 1977-04-20 GB GB16498/77A patent/GB1603400A/en not_active Expired
-
1978
- 1978-04-19 SE SE7804489A patent/SE7804489L/en unknown
- 1978-04-19 CA CA301,435A patent/CA1126927A/en not_active Expired
- 1978-04-19 BR BR7802436A patent/BR7802436A/en unknown
- 1978-04-19 IT IT67893/78A patent/IT1156970B/en active
- 1978-04-20 JP JP4760478A patent/JPS53130235A/en active Pending
- 1978-04-20 ZA ZA00782260A patent/ZA782260B/en unknown
- 1978-04-20 FR FR7811658A patent/FR2387718A1/en active Granted
- 1978-04-20 DE DE2817347A patent/DE2817347C2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2387718A1 (en) | 1978-11-17 |
| BR7802436A (en) | 1978-12-05 |
| DE2817347A1 (en) | 1978-10-26 |
| SE7804489L (en) | 1978-10-21 |
| IT1156970B (en) | 1987-02-04 |
| JPS53130235A (en) | 1978-11-14 |
| CA1126927A (en) | 1982-07-06 |
| IT7867893A0 (en) | 1978-04-19 |
| DE2817347C2 (en) | 1982-07-08 |
| ZA782260B (en) | 1979-04-25 |
| FR2387718B1 (en) | 1981-08-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |