US3776532A - Device for plugging the pour of rotating reactors - Google Patents

Device for plugging the pour of rotating reactors Download PDF

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Publication number
US3776532A
US3776532A US00240379A US3776532DA US3776532A US 3776532 A US3776532 A US 3776532A US 00240379 A US00240379 A US 00240379A US 3776532D A US3776532D A US 3776532DA US 3776532 A US3776532 A US 3776532A
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US
United States
Prior art keywords
plug
taphole
rod
plugging
frusto
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 - Lifetime
Application number
US00240379A
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English (en)
Inventor
B Imberti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Centro Sperimentale Metallurgico SpA
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Centro Sperimentale Metallurgico SpA
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Filing date
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Application filed by Centro Sperimentale Metallurgico SpA filed Critical Centro Sperimentale Metallurgico SpA
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Publication of US3776532A publication Critical patent/US3776532A/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4653—Tapholes; Opening or plugging thereof
    • 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
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1509—Tapping equipment

Definitions

  • ABSTRACT A device for plugging the taphole of reactors for metallurgical processes, of rotating and/or oscillating type; comprising in combination a plug having an essentially frusto-conical shape; a tail piece, fixed to the greater base of the plug and substantially perpendicular thereto, having its free end folded in order to allow the plug to be operated; a rod rigid with, and perpendicular to, the minor base of the plug, the free end of which is so shaped as to allow its anchoring to the locking member of the plug; a member for locking the plug on the taphole located on the outer edge of the hole itself and co-operating with the end of said rod, said member being easily removable and apt to be reused.
  • the present invention relates to a device for plugging the taphole of rotating reactors.
  • this invention relates to a device for plugging the taphole of rotating and/or oscillating reactors and more specifically to a plugging device which can be easily applied to the taphole, ensuring a good seal and a correspondingly ease of removal at the end of the process which takes place in the reactor, and in any case, before the tapping.
  • the location of the taphole which usually in the converters is open and located in the top of the side wall, must have been exactly established in order to avoid undesired outflows of material, taking account of the density and of the amount of the single liquids involved in the process, of the dimensions of the reactor and of its maximum speed of rotation during the operation.
  • the slag will take the characteristics and the behaviour of a foam, i.e., of a dispersion where the dispersant phase is liquid and the dispersed phase is gaseous, thus increasing its volume remarkably and in a non expectable amount.
  • the purpose of the present invention is that of obviating the aforesaid drawback providing a plugging device for the taphole having a simple construction, being easily mounted and fixed on the hole itself, and finally which can be easily removable therefrom.
  • the specific object of the present invention is a device for plugging the taphole of reactors for metallurgical processes, of rotating and/or oscillating type, characterized in comprising in combination:
  • tail piece fixed to the greater base of the plug and substantially perpendicular thereto, having its free end folded in order to allow the operation of the plug itself;
  • a member for locking the plug on the taphole located on the outer edge of the hole itself and cooperating with the end of the aforesaid rod, said member being easily removable and apt to be reused.
  • FIG. 1 shows a longitudinal section of a plugging device according to this invention with a single-piece P g;
  • FIG. 2 is a partial section similar to that of FIG. 1, with a two-piece plug.
  • FIG. 3 is a partial longitudinal section of a device according to FIGS. 1 or 2 where the locking member is a wedge.
  • FIG. 1 where are shown:
  • a plug 1 having an essentially frusto-conical shape
  • One of the terminal portions is provided with a hook 7 and the other rests on the outer wall 8 of the reactor surrounding the outer orifice 9 of the taphole, said rest being ensured by a loop 10 provided in the terminal portion of the spring 6 and co-operating with the outer orifice 9 of the taphole.
  • a frusto-conical shape-with am either rectilinear or slightly convex lateral surface can be provided for the plug 1, or also a frusto-conical shape with a rounded minor base. All these shapes will ensure a good seal even if the size of the orifice would change during the operation of the reactor. In fact, also in these cases, the plug due to the combined effect of its shape, of the action of the spring 6 and of the centrifugal force, will insert into the taphole through the desired extent ensuring a good seal.
  • a is comprised between 10 and 60;
  • the ratio D/d is comprised in the interval 1.1 2;
  • said two-piece plug consists of a central piece or core 1 1 having a frusto-conical shape, surrounded by a tubular sheet or ring 12 of the same material as the core and with its outer conical surface equal to that of the corresponding single-piece plug.
  • the two parts 11 and 12 before their use are glued, for instance by a vinyl glue, so as to render the unit equivalent to a single-piece plug.
  • the plug is made of a material selected so as, with reference to the particular process occurring in the reactor, to show optimum characteristics of mechanical and chemical resistance; for instance, a refractory material, and which can be also partially or totally coated with a metal sheet and/or with tarry substances.
  • recesses are provided for the connection to the tail piece 2 and to the rod 4. Said recesses, either threaded or not, can be provided directly in the refractory material, or in a bushing, for instance made of metal, embedded in the refractory body during its forming.
  • the rod 4 is made of metal and its cross section is circular, or of any other form.
  • the ratio between the area of its cross section and the area of the nominal cross section of the taphole can be defined between 0.0014 and 0.2.
  • the end of the rod 4 to be connected to the plug can be either threaded or square bent, T shaped etc., according to the selected fastening system.
  • the free end thereof carries a hook 5 or alternatively an aperture having any form.
  • the length of said rod depends upon the nominal length of the taphole and anyway it must be such as to ensure a projection from the outer edge of the taphole sufficient to carry out easily the fastening operation as previously described.
  • the tail piece 2 consists of a metal plate (or metal stem) fixed perpendicularly, by one of the methods as already described with reference to the rod 4, and carrying at its opposite end a loop or a grommet 3. Taking account of the dimensions and of the inner form of the reactor, its length is selected so as to render at utmost easy the operation of locating the plug in its seat.
  • the closure of the taphole is made always be means of a frusto-conical plug 1, the tightening ensured by a wedge element 13, having a length greater than the diameter of the outer orifice of the taphole 9 passing through a shaped aperture provided through the body of the rod 4 quite analogous to that already shown in the previous FIGS. 1 and 2.
  • a device for plugging the taphole of reactors for metallurgical processes, of rotating and/oroscillating type, comprising in combination:
  • tail piece fixed to the greater base of the plug and substantially perpendicular thereto, having its free end bent in order to allow the plug to be operated;
  • a member for locking the plug on the taphole located on the outer edge of the hole itself and cooperating with said free end of the aforesaid rod, said member being easily removable and apt to be reused.
  • a device as claimed in claim 4, characterized in that calling D the diameter of the greater base of the plug and d the actual diameter of the inner orifice of 5 5 (0.l2 to 1.5) D
  • a plugging device as claimed in claim 1 characterized in that the rod is made of metal and its cross sectional shape is circular or it has whatever form.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
US00240379A 1971-04-17 1972-04-04 Device for plugging the pour of rotating reactors Expired - Lifetime US3776532A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT4980471 1971-04-17

Publications (1)

Publication Number Publication Date
US3776532A true US3776532A (en) 1973-12-04

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US00240379A Expired - Lifetime US3776532A (en) 1971-04-17 1972-04-04 Device for plugging the pour of rotating reactors

Country Status (7)

Country Link
US (1) US3776532A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE782104A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2217726C3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2133605B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1368195A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
LU (1) LU65161A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL7204817A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010936A (en) * 1973-06-05 1977-03-08 Aikoh Co., Ltd. Process for tapping a steel-making converter
US4828226A (en) * 1987-10-16 1989-05-09 Foseco International Limited Tap hole plugs for metallurgical vessels
GB2534231A (en) * 2015-01-19 2016-07-20 Monocon Int Refractories Ltd Slag shield

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114260267B (zh) * 2021-12-03 2023-03-24 中冶赛迪工程技术股份有限公司 用于盛钢水容器出钢口的清理装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3398945A (en) * 1965-12-09 1968-08-27 Owens Corning Fiberglass Corp Molten material furnace hole closures

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3398945A (en) * 1965-12-09 1968-08-27 Owens Corning Fiberglass Corp Molten material furnace hole closures

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010936A (en) * 1973-06-05 1977-03-08 Aikoh Co., Ltd. Process for tapping a steel-making converter
US4828226A (en) * 1987-10-16 1989-05-09 Foseco International Limited Tap hole plugs for metallurgical vessels
GB2534231A (en) * 2015-01-19 2016-07-20 Monocon Int Refractories Ltd Slag shield
GB2534231B (en) * 2015-01-19 2019-07-03 Monocon International Refractories Ltd Slag shield

Also Published As

Publication number Publication date
LU65161A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-07-12
DE2217726A1 (de) 1972-11-02
GB1368195A (en) 1974-09-25
DE2217726B2 (de) 1973-03-08
DE2217726C3 (de) 1973-09-27
FR2133605A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-12-01
FR2133605B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-09-13
NL7204817A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-10-19
BE782104A (fr) 1972-07-31

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