US3810297A - Method of transforming a top-blown steel converter vessel to a bottom-blown type - Google Patents

Method of transforming a top-blown steel converter vessel to a bottom-blown type Download PDF

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Publication number
US3810297A
US3810297A US00261823A US26182372A US3810297A US 3810297 A US3810297 A US 3810297A US 00261823 A US00261823 A US 00261823A US 26182372 A US26182372 A US 26182372A US 3810297 A US3810297 A US 3810297A
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United States
Prior art keywords
vessel
trunnion
tuyeres
shell
installing
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
US00261823A
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English (en)
Inventor
H Fisher
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Pennsylvania Engineering Corp
Original Assignee
Pennsylvania Engineering Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pennsylvania Engineering Corp filed Critical Pennsylvania Engineering Corp
Priority to US00261823A priority Critical patent/US3810297A/en
Priority to ZA733353A priority patent/ZA733353B/xx
Priority to CA173,706A priority patent/CA1031564A/en
Priority to GB2768673A priority patent/GB1409161A/en
Priority to HUPE884A priority patent/HU167944B/hu
Priority to AU56842/73A priority patent/AU481069B2/en
Priority to BR4378/73A priority patent/BR7304378D0/pt
Priority to CS734250A priority patent/CS220751B2/cs
Priority to DE2329777A priority patent/DE2329777A1/de
Priority to DD171488A priority patent/DD106868A5/xx
Priority to JP6550373A priority patent/JPS564603B2/ja
Priority to SU7301974941A priority patent/SU572211A3/ru
Priority to US05/438,586 priority patent/US4055335A/en
Application granted granted Critical
Publication of US3810297A publication Critical patent/US3810297A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • C21C5/48—Bottoms or tuyéres of converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49716—Converting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining

Definitions

  • An existing basic oxygen type top-blown steel converter vessel is transformed into a bottom-blown type where gases and finely divided materials may be blown into the vessel through 'tuyeres in its side wall and in its bottom.
  • the existing trunnion shafts on which the existing vessel is supported for tilting are bored at the installation site to provide a plurality of passageways for conducting finely divided materials, gases and cooling water to the various tuyeres and to the trunnion ring which supports the vessel, respectively.
  • Special multipurpose rotary joints are used to connect the tiltable vessel to sources of the gases and finely divided materials.
  • an installed topblown basic oxygen converter vessel is transformed into a bottom-blown type at the installation site.
  • this is accomplished by installing tuyeres in the previously imperforate bottom of the existing converter vessel.
  • the trunnion shafts on which the vessel is supported are suitably bored to provide passageways for conducting gases and entrained finely divided materials to the bottom tuyeres. Passageways are also provided for conducting gases to tuyeres in the sidewalls of the vessel and for conducting cooling water to and from the trunnion ring which supports the vessel.
  • Special rotary joints are provided for interconnecting the trunnion shaft passageways to the stationary piping which leads back to the sources of the gases and other materials.
  • FIG. 1 is a plan view of a converter vessel that is rotated from its normal operating position, parts of the vessel being broken away, and the vessel being associated with a temporarily installed boring machine which is used to provide passageways in the vessel trunnion ring and trunnion pins for communicating the vessel tuyeres with fluidic material sources;
  • FIG. 2 is a side elevation of the vessel rotated 90 from its operating position in conjunction with the boring machine which is used to make trunnion pin passageways for transforming a top-blown vessel to a bottom-blown type;
  • FIG. 3 is a fragmentary elevational section of the bottom portion of a converter vessel shell
  • FIG. 4 is a fragmentary view of the bottom portion of a converter vessel which has been transformed in accordance with the invention and is associated with a modified outer vessel shell which is shown fragmentarily and in section;
  • FIG. 5 is an enlarged view of a portion of the shell shown in the preceding figure
  • FIG. 6 is an elevation view of a rotary joint, with parts broken away, used in connection with the vessel transfer;
  • FIG. 7 is a reduced longitudinal sectional view of a portion of a vessel trunnion pin and associated trunnion rings which are treated in accordance with the invention.
  • FIG. 8 represents another type of rotary joint with parts broken away and parts in section which is used on vessels that are transformed in accordance with the invention
  • FIG. 9 is a longitudinal sectional view, reduced in size, of a vessel trunnion pin and trunnion ring which are treated in accordance with the invention.
  • FIG. 10 is a fragment of a vessel trunnion ring from which pipes extend for conducting gas and finely divided materials entrained in gas through tuyeres of a vessel.
  • FIG. 1 a conventional top-blown converter vessel is shown in one of the positions which it assumes during transformation of it to a bottom-blown type of converter vessel.
  • the mouth 11 of the vessel which can be seen in FIG. 2 is presented upwardly.
  • vessel 10 is rotated 90 on a horizontal axis, from the position in which it appears in FIG. 1, during normal operation.
  • Vessel 10 is in a concrete walled pit 12 which is deep enough to allow the vessel to rotate through a full circle on its horizontal axis.
  • Conventional top-blown converter vessels have an imperforate bottom section 13 defined by a metal shell 14.
  • the bottom shell 14 and the cylindrical metal midsection shell 15 together with the conical upper shell section 16 are all lined with refractory material, not shown, in a well known fashion.
  • Vessel 10 is supported in a trunnion ring 17 which has upper 18 and lower 19 flanges that are joined by an internal axially extending substantially circular web and an external web such as 20.
  • trunnion ring 17 is a circular beam in which there are circumferential passageways through which cooling water may be circulated if desired.
  • Vessel 10 is supported on the flanges l8 and 19 of trunnion ring 17 by means of a plurality of upper and lower circumferentially spaced brackets such as those marked 21-24 or any other means of suspension which prevents the vessel from separating from the ring when the vessel is either upright or inverted.
  • Trunnion pin 28 is journaled in a bearing structure 30 as can be seen in FIGS. 1 and 2, and the pin 28 extends through the bearing structure 30 as indicated by the broken away portion 28' in FIG. 1.
  • the bearing structure 30 is supported on a concrete pier 31 which together with another concrete wall 32 defines a pit 33.
  • the pit accommodates a vessel drive mechanism 34 which is omitted from FIG. 1 but appears in elevation in FIG. 2.
  • the drive side For convenience, the side of the vessel on which drive mechanism 34 is situated will hereinafter be called the drive side.
  • the drive mechanism 34 is conventional and need not be described in detail except to say that it comprises a housing 35 which is journaled on trunnion pin 28 and is prevented from rotating by means which have beem omitted from the drawings.
  • Housing 35 mounteded on housing 35 are several electric or hydraulic drive motors such as motors 36 and 37 which are connected to speed reducers 38 and 39, respectively, which are also supported from housing 35.
  • the trunnion pin 29 on the other side of the vessel 10, hereafter called the idler side, is also journaled in a bearing structure 39 which is supported on a concrete pier 40 at the perimeter of the pit 12 in which the vessel is located.
  • the invention involves a method and apparatus for placing the tuyeres of a tiltable converter vessel in communication with stationary sources of fluidic materials such as gases, finely divided materials and cooling water so that the vessel may be operated as a bottom-blown vessel instead of as a topblown vessel for which it was originally designed.
  • fluidic materials such as gases, finely divided materials and cooling water
  • FIGS. 3, 4 and 5 show the bottom portion of a converter vessel 10 which has been transformed from a top-blown type to a bottom-blown type.
  • the interior vessel bottom is lined with refractory material 46 which is originally imperforate in a top-blown vessel.
  • Circular plate 60 is prepared with a reinforcing ring 62 inserted and welded along the periphery of the circular cut-out at 63.
  • Another circular plate 52, FIG. 4, of suitable diameter and thickness is prepared to fit over the cut-out in the bottom of the vessel, from the outside to close the opening described before.
  • Circular plate 66 is bored with axially or inclined extending holes 67.
  • tuyeres such as 48 are then installed in a predetermined pattern in the bottom of the vessel, although only one tuyere 48 is shown in FIG. 4.
  • the tuyere is sealed in the refractory bottom 46.
  • These tuyeres 48 comprise two concentric pipes which have a small annular gap between them.
  • the outer pipe is marked 49 and the inner pipe is marked 50 in FIG. 4.
  • the outer pipe is connected by means of a flange 51 to the bottom plate 52.
  • a means is provided to connect the annular gap between outer pipe 49 and inner pipe 50 so that gas may be conducted axially of the small gap and into the molten metal which is supported on refractory bottom 46 added to plate 52.
  • a header is used in place of individual tees such as 53 and the header is supplied with pressurized gas by means of a pipe such as 54.
  • the central pipe 50 extends through tee 53 and connects by some means such as elbow 55 to a distributor device connected to pipe 56 which is typically larger than pipe 54.
  • pressurized gases such as oxygen and oxygen which entrains flnely divided fluxing material such as burnt lime are delivered through pipe 56 to inner tuyere pipe 50 so that these fluidic materials may be injected directly into the molten metal within vessel 10.
  • the oxygen is let to react with the undesirable impurities such as sulphur, phosphorous, excessive carbon and other elements to form oxides including carbon monoxide and then carbon dioxide which evolve from the vessel mouth and into the gas collection hood and the fluxing agents react with other constituents of the melt to form slag which accumulates on the top of the melt.
  • the reaction between oxygen and the impurities is an exothermic reaction which causes intense heat in the vicinity of the tuyere pipe tips.
  • the transformation of the converter vessel 10 from a top-blown type to a bottomblown type requires providing an access opening 57 in the casing 58 which surrounds the gas connections to the tuyeres 48. Opening 57 may be provided with a removable bottom flange plate for access.
  • Casing 58 is secured to the vessel Shell with several clamping devices 69.
  • vessel 10 is tiltable, it is necessary to provide suitable passageways in the drive side trunnion pin 28 and the idler side trunnion pin 29 to communicate the bottom tuyeres 48 and also side wall tuyeres to be discussed later with stationary pipes that connect to fluidic material, not shown, sources by way of rotary joints, to be discussed, which fasten to the ends of the drive side trunnion pin 28 and idler side trunnion pin 29.
  • the method of making the passageways and, hence, carrying on a necessary step for transfonning a topblown vessel into a bottom-blown type will now be discussed primarily in reference to FIGS. 1 and 2.
  • Both axial and radial passageways or bores are required in trunnion pins 28 and 29 and radial bores are variously required in the trunnion pins and trunnion ring side blocks 26 and 27.
  • the use of these bores in typical cases will be discussed later in connection with FIGS. 7 and 9 primarily.
  • a boring machine 70 is temporarily installed in a pit 71 and is set up for making the bore in trunnion block 26 and drive side trunnion pin 28 in a direction which is radial with respectto the axis of trunnion pin 28. It will be explained later how a suitable opening is made in trunnion ring flange 19 to permit access by the spindle 72 of boring machine 70.
  • Spindle 72 is, or course, adapted at its outer end to hold a drill, not shown, for making a pilot hole and for holding a cutting bit, not shown, for making one or more bores of suitable size.
  • radial bores may be and usually are made by setting up boring machine 70 in other locations such as are marked with the reference numerals 73, 74 and 75. The last two locations 74 and 75 are for making bores as required in trunnion block 27 and trunnion pin 29 on the idler side.
  • FIG. 2 demonstrates use of a boring machine 80 for making a bore endwise of drive side trunnion pin 28.
  • the spindle 81 of boring machine extends into the end 28' of the idler trunnion pin which projects through the drive mechanism gear housing 35.
  • Boring machine 80 is supported on suitable beams 82 which are temporarily fastened to concrete operating floor 83.
  • the boring machine base 82 is further supported and stabilized by a temporarily installed support column 84 which rests on the concrete bottom of pit 33.
  • the boring machine 80 is also transferred with its base 82 for being supported on concrete floor 85 adjacent idler trunnion pin 29 whose end is exposed through bearing structure 39 so as to be accessible by the spindle 81 of boring machine 80.
  • axial bores may be made in trunnion pins 28 and 29 and these bores may be extended into trunnion ring side blocks 26 and 27 as required.
  • FIG. 7 illustrates a typical treatment given to the idler side trunnion pin 28 and the trunnion ring 17 drive side block 26.
  • an axial bore is made in trunnion pin 28.
  • the end of bore 90 is occupied by an adapter 91 which is inserted after bore 90 is made.
  • the adapter has one radial hole 92 that opens into a gap 93 between an outer tube 94 and an inner tube 95. These latter tubes are preferably of stainless steel and so is the adapter 91.
  • Threaded into radial adapter hole 92 is a pipe 96 which has its open end 97 in an annular cavity 98 that extends around trunnion ring 17.
  • Pipe 96 through its opening 97 drains cooling water from cavity 97 into the annular space 93 between tubes 94 and which space constitutes a cooling water outlet or return that is in communication with the rotary joint assembly which is depicted in FIG. 6 and will be described in detail later.
  • a section or plug 99 may be removed from flange 18 of trunnion ring 17 to permit access by the boring machine spindle for making the radial bore 100 in which cooling water return pipe 96 is inserted. Finally the plug 99 is rewelded into flange 18 as shown in FIG. 7.
  • a plug 101 is also burned out of trunnion ring flange 19 to permit making additional radial bores 102 and 103 in the trunnion block 26 with the boring machine setup shown in FIG.
  • Bore 102 is fitted with a pipe 107 that screws into adapter 91 at 104 and connects with the interior of internal tube 95.
  • Tube 95 thus constitutes a cooling water inlet and incoming cooling water for the trunnion ring is discharged into a circumferential cavity 106 through the end 105 of pipe 107.
  • the manner in which cooling water inlet cavity 106 is cross connected with cooling water outlet .cavity 98 is not depicted in the drawing.
  • the large axial bore 90 in trunnion pin 28 serves in conjunction with the exterior of outer concentric tube 94 to create another annular or tubular axial passageway 110 which communicates with a radial bore 111 which is coaxial with bore 103 in trunnion pin 28.
  • a pipe 112 which is shown fragmentarily, is threaded into bore 111 at 113. This pipe may be connected to pipe 54 in FIG. 4 for conducting the hydrocarbon gas to the bottom tuyeres 48 as previously discussed.
  • tubes 94 and 95 in FIG. 7 which extend axially through bore 90 of trunnion pin 28 also extend into a rotary joint which is depicted in FIG. 6.
  • the rotary joint has a flange 115 by which it is secured by means of machine screws 116 to the end face 28' of trunnion pin 28.
  • Coaxial tubes 94 and 95 are shown broken away in FIGS. 6 and 7 and one may also see how the space between these tubes define a continuous annular passageway 93 for outflow of cooling water while cooling water flows in through tube 95.
  • the outside wall of outer tube 94 also defines the passageway 110 through which a hydrocarbon or other gas may be delivered to vessel 10.
  • the rotary joint in FIG. 6 has a throat 117 which is sealed for rotation in a body 118.
  • throat 117 rotates with trunnionn pin 28 when the vessel is tilted and rotary joint body 118 remains stationary.
  • Body 118 is broken away at about its midsection to show the ends of tubes 94 and 95.
  • the body 118 has a large central bore 119 which connects with a radial hole 120 to which is connected a gas supply pipe 121 that connects to a pressurized source of hydrocarbon gas for instance, not shown.
  • Gas which enters pipe 121 in the direction of arrow 122 flows through the rotary joint by way of annular passageway 119 and the communicating passageway 110 and eventually discharges through radially directed pipe 112 which is shown in FIG.
  • Sealing rings 135 are interposed between the inside bore of body 118 and the outside of tube 94 to prevent gas leakage from passageway 119.
  • a drain hole 134 is also provided.
  • a commercially available rotary joint 125 which connects by means of an elbow to a stationary water inlet pipe 126 and connects directly to a stationary water outlet pipe 127.
  • the water inlet inside tube 95 in body 118 is coupled to a tube 128 by means of a coupling 129 which is visible in the broken away midsection.
  • the construction of rotary joint 125 is such that coaxially connected tubes 128 and 95 may turn with trunnion pin 28 while the body of rotary joint 125 as well as pipes 126 and 127 remain stationary.
  • axially connected pipes 128 and tube 95 can deliver cooling water continuously to the trunnion ring when vessel is in any tilted position.
  • the rotary joint 125 also has an adapter 130 which is flanged onto body 118 and has an annular opening 131 which is occupied by a perforated ring 132.
  • the ring has axial perforations 133 for passing returning cooling water from annular passageway 93 to the water outlet pipe 127.
  • FIGS. 8 and 9 which typifies treatment of the idler side of the vessel insofar as one method of transforming the vessel from a top'blown to a bottom-blown type is concerned.
  • FIG. 8 illustrates a type of rotary valve that can be installed on the idler side trunnion pin 29 although it should be understood that it might be installed on the drive side as well if the trunnion pin is suitably bored.
  • the rotary valve comprises a throat at the left which has a flange 141 for fastening it to the end of idler trunnion pin 29, for example, after it has been suitably bored axially and radially as suggested in FIG.
  • Flange 141 being fastened to the'end of the trunnion pin, rotates with it.
  • the rotary joint includes a body 142 which has an inlet hole 143 surrounded by a flange 144.
  • Body 142 remains stationary while throat 140 and flange 141 rotate with the trunnion pin to which the flange 141 is attached.
  • the large flanged opening 143 is for connecting a feed line, not shown, by which oxygen and other gases and gases entraining finely divided solids can be delivered to the rotary joint and ultimately to the center pipe 50 in the tuyeres 48 which are in the bottom of vessel 10.
  • a pair of concentric tubes 145 and 146 extend through flange 141 and there is a hole 147 around them which constitutes an outlet for gases and finely divided materials which enter flanged side opening 143. Hole 147 communicates with bore 147 in trunnion pin 29 as can be seen in FIG. 9. Tubes 145 and 146 in FIG. 8 are understood to be continuous with their counterparts in FIG. 9.
  • An oxidizing gas or other gas may be delivered to vessel 10 through tube 146 in the rotary joint shown in FIG. 8.
  • Tube 146 extends back to a flanged adapter 148 where it is joined by brazing or welding as at 149.
  • the outer tube 145 like the inner one is preferably made of abrasion resistant stainless steel or aluminumbronze or steel tube sprayed with aluminum-bronze or ceramic material to withstand the abrasive effect of the finely divided materials which are transported at high velocity in gas on the outside of tube 145 in the rotary joint.
  • the rotary joint at the far right has a flanged elbow 154 for connecting it to a pipe, not shown, which would lead back to a pressurized source, not shown, of oxidizing or other gas.
  • the concentric tubes 145 and 146 are supported in a bearing sleeve 155 which is in a bracket 156 that fastens to a flange 157. It will be evident from inspection of FIGS. 8 and 9 that central rotary tubes 145 and 146 are fastened to trunnion pin 29 and rotate with it while the rotary joint assembly 153 remains stationary. The construction is such that gas which enters rotary joint assembly 154 flows through the interior of tube 146 into the trunnion pin and ultimately to the tuyeres at the bottom of vessel 10.
  • FIG. 9 A typical manner for modifying the idler side trunnion pin 29 and the trunnion block 27 to cooperate in producing fluidic material flow passageways with the rotary joint of FIG. 8 is illustrated in FIG. 9.
  • the trunnion pin 29 is provided with the axial bore 147.
  • two radial bores 160 and 161 are also made.
  • a plug 162 is removed from the trunnion ring flange 19 to allow the spindle of the boring machine to enter.
  • An adapter fitting 163 is installed in the end of bore 147'. The adapter is brazed to the ends of concentric tubes 145 and 146.
  • Adapter 163 has a threaded radial hole 164 to which a pipe such as 165 may be threadingly engaged.
  • Pipe 165 may be connected to supply an oxidizing or other gas to the bottom tuyeres or it may be connected as necessary to pipe 176 in FIG. 10 for routing gas to the top tuyeres or elsewhere.
  • Pipe 166 is for conducting gases and gases entraining finely divided solids to the vessel tuyeres and the pipe may be brazed or welded as at 167 into the trunnion block 27 bore 160. Thus pipe 166 communicates with the large passageway 147' in the trunnion pin.
  • axial passageway 147 and its connecting radial bore 160 have abrasion resistant stainless steel or aluminum-bronze, liners, or steel tubes sprayed with aluminum-bronze or ceramic material, to withstand abrasive effect of the finely divided materials which are transported at high velocity in the gas.
  • a curved deflector block 170 is fixed by means of screws to adapter 163. The curved block eliminates the sharp corner which would otherwise cause flow friction and turbulence in the gas with entrained fine solids.
  • FIG. 10 illustrates that the trunnion pin and the surrounding trunnion block 26 may be suitably bored with the apparatus shown in FIGS. I and 2 to accommodate pipes which lead to the bottom tuyeres in the vessel and to sidewall tuyeres as well.
  • the bottom tuyeres may be supplied with gas and entrained fine solids through a large pipe 175 which may connect with pipe 56 in FIG. 4.
  • Another radially extending pipe 176 may be connected to a flexible metal hose 177 which connects with a sidewall tuyere pipe 178.
  • the sidewall tuyere 178 extends through a hole 179 in the refractory lining 180 of vessel 10.
  • the shell of the vessel is marked in FIG.
  • the sidewall tuyere 178 may extend through an opening 181 in a bracket such as 24 which is attached to the metal shell of vessel 10.
  • The'sidewall tuyeres are preferably located above the highest expected level of molten metal within the vessel. In an actual embodiment more than one sidewall tuyere 178 may be used and they are distributed about half way around the vessel peripheryand are connected to a header, not shown, which is supplied with pressurized fluidic material fromm pipe 176.
  • the boring apparatus shown in FIGS. 1 and 2 can be used to provide suitable passageways for enabling transformation of a top-blown vessel into a bottomblown type.
  • the vessel may be adapted for having a cooling water inlet on one side and an outlet therefor on the same side or even on the other side provided suitable rotary joints are used.
  • hydrocarbon gas inlets may be provided on either side of the vessel to supply bottom and top or sidewall tuyeres of the vessel.
  • Various combinations of means have been described for delivering gases and gases in which finely divided solids are entrained to the vessel. From the illustrations that have been given, those skilled in the art will be able to variously modify the vessel trunnion pin and trunnion ring to effectuate transformation of a topblown vessel to a bottom-blown type.
  • An on-site method of transforming a preexisting top-blown steel converter vessel to a bottom-blown type comprising:
  • each pipe means has an open end communicating with a cooling water flow passageway in the trunnion ring from which the trunnion pin extends, said pipe means constituting respectively an entrance and an exit for trunnion ring coolant water.
  • conduit means between the flow paths in the trunnion pin means and the respective passageways in the submerged tuyeres whereby to permit injection of fluidic substances into said vessel.
  • the vessel transforming method of claim 1 including the steps of:
  • a bottom assembly comprising a refractory element serving as a plug for said aperture and as a part of the refractory lining of said vessel, said plug having at least one tuyere passageway therein, and

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
US00261823A 1972-06-12 1972-06-12 Method of transforming a top-blown steel converter vessel to a bottom-blown type Expired - Lifetime US3810297A (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
US00261823A US3810297A (en) 1972-06-12 1972-06-12 Method of transforming a top-blown steel converter vessel to a bottom-blown type
ZA733353A ZA733353B (en) 1972-06-12 1973-05-18 Transformation of top-blown steel converter vessel to bottom-blown type
GB2768673A GB1409161A (en) 1972-06-12 1973-06-11 Metallurgical apparatus including a vessel for metal conversion
HUPE884A HU167944B (xx) 1972-06-12 1973-06-11
CA173,706A CA1031564A (en) 1972-06-12 1973-06-11 Transformation of top-blown steel converter vessel to bottom-blown type
BR4378/73A BR7304378D0 (pt) 1972-06-12 1973-06-12 Aperfeicoamentos em aparelho metalurgico e processo para transformar, insitu, um vaso conversor de aco de sopro superior pre-existente em um vaso de sopro inferior
AU56842/73A AU481069B2 (en) 1972-06-12 1973-06-12 Metallurgical apparatus including a vessel for metal conversion
CS734250A CS220751B2 (en) 1972-06-12 1973-06-12 Facility for guiding the liquids in the bottom blowing pipes and in the ring with the pins of the foundry appliance with converter
DE2329777A DE2329777A1 (de) 1972-06-12 1973-06-12 Umruestung einer oberwind-stahlkonverterbirne in eine solche von einer bodenwind-bauart
DD171488A DD106868A5 (xx) 1972-06-12 1973-06-12
JP6550373A JPS564603B2 (xx) 1972-06-12 1973-06-12
SU7301974941A SU572211A3 (ru) 1972-06-12 1973-12-14 Конвертер с донной продувкой
US05/438,586 US4055335A (en) 1972-06-12 1974-02-01 Transformation of top-blown steel converter vessel to bottom-blown type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00261823A US3810297A (en) 1972-06-12 1972-06-12 Method of transforming a top-blown steel converter vessel to a bottom-blown type

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/438,586 Division US4055335A (en) 1972-06-12 1974-02-01 Transformation of top-blown steel converter vessel to bottom-blown type

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US3810297A true US3810297A (en) 1974-05-14

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US00261823A Expired - Lifetime US3810297A (en) 1972-06-12 1972-06-12 Method of transforming a top-blown steel converter vessel to a bottom-blown type

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US (1) US3810297A (xx)
JP (1) JPS564603B2 (xx)
BR (1) BR7304378D0 (xx)
CA (1) CA1031564A (xx)
CS (1) CS220751B2 (xx)
DD (1) DD106868A5 (xx)
DE (1) DE2329777A1 (xx)
GB (1) GB1409161A (xx)
HU (1) HU167944B (xx)
SU (1) SU572211A3 (xx)
ZA (1) ZA733353B (xx)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951390A (en) * 1974-04-03 1976-04-20 Pennsylvania Engineering Corporation Thrust bearing device for metal treating vessel
US4237596A (en) * 1978-10-04 1980-12-09 Standard Oil Company (Indiana) Method of converting membrane separation units
US4789139A (en) * 1976-11-30 1988-12-06 Eisenwerk-Gesellschaft Maximillanshutte Methods of and apparatus for constructing refractory brick linings on tuyere plates for metal treating vessels
CN106460904A (zh) * 2014-02-03 2017-02-22 锁栓公司 推压紧固件

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU7965282A (en) * 1981-01-21 1982-07-29 Nippon Steel Corporation Structure of oxygen passage in steel converter
DE9211926U1 (de) * 1992-09-04 1992-12-17 Voest-Alpine Industrieanlagenbau Ges.m.b.H., Linz Kippbarer Konverter
CN107227424B (zh) * 2017-05-31 2018-12-28 中冶东方工程技术有限公司 不锈钢的冶炼设备和应用其冶炼不锈钢的冶炼方法

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US3588072A (en) * 1967-09-16 1971-06-28 Kawasaki Heavy Ind Ltd Cooling apparatus for a converter body
US3724827A (en) * 1971-10-20 1973-04-03 Pa Eng Corp Anti-pollution device for a metallurgical vessel

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US3345058A (en) * 1963-03-08 1967-10-03 Siderforni S P A Cooling means for tilting converter
US3588072A (en) * 1967-09-16 1971-06-28 Kawasaki Heavy Ind Ltd Cooling apparatus for a converter body
US3724827A (en) * 1971-10-20 1973-04-03 Pa Eng Corp Anti-pollution device for a metallurgical vessel

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US3951390A (en) * 1974-04-03 1976-04-20 Pennsylvania Engineering Corporation Thrust bearing device for metal treating vessel
US4789139A (en) * 1976-11-30 1988-12-06 Eisenwerk-Gesellschaft Maximillanshutte Methods of and apparatus for constructing refractory brick linings on tuyere plates for metal treating vessels
US4237596A (en) * 1978-10-04 1980-12-09 Standard Oil Company (Indiana) Method of converting membrane separation units
CN106460904A (zh) * 2014-02-03 2017-02-22 锁栓公司 推压紧固件

Also Published As

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GB1409161A (en) 1975-10-08
BR7304378D0 (pt) 1974-08-15
CA1031564A (en) 1978-05-23
SU572211A3 (ru) 1977-09-05
HU167944B (xx) 1976-01-28
CS220751B2 (en) 1983-04-29
AU5684273A (en) 1974-12-12
DD106868A5 (xx) 1974-07-05
ZA733353B (en) 1974-05-29
DE2329777A1 (de) 1974-01-03
JPS564603B2 (xx) 1981-01-31
JPS4963609A (xx) 1974-06-20

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