CA1194695A - Spout arrangement for a metal melt - Google Patents
Spout arrangement for a metal meltInfo
- Publication number
- CA1194695A CA1194695A CA000396633A CA396633A CA1194695A CA 1194695 A CA1194695 A CA 1194695A CA 000396633 A CA000396633 A CA 000396633A CA 396633 A CA396633 A CA 396633A CA 1194695 A CA1194695 A CA 1194695A
- Authority
- CA
- Canada
- Prior art keywords
- spout
- coolant
- metal jacket
- set forth
- base
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/14—Discharging devices, e.g. for slag
Abstract
ABSTRACT OF THE DISCLOSURE:
A spout for a metal melt, in particular a tapping spout of a blast furnace for the production of pig iron, in-cludes a trough-shaped metal jacket. The metal jacket is provided with a refractory lining accommodating the metal melt. At least one cavity is provided in the metal jacket, through which a coolant flows.
A spout for a metal melt, in particular a tapping spout of a blast furnace for the production of pig iron, in-cludes a trough-shaped metal jacket. The metal jacket is provided with a refractory lining accommodating the metal melt. At least one cavity is provided in the metal jacket, through which a coolant flows.
Description
The invention relates to a spout for a metal melt, in particular a tapping spout of a blast furnace for the production of pig iron, comprising a trough-shaped metal jacket provided with a refractory lining accommodating the metal melt.
The tapping of pig iron and slag from a blast furnace takes place in periodic intervals. The pig iron and the slag have to be supplied separately to the transportina vessels available for the removal from the blast furnace region. The separation of pig iron and slag is effected in the main tapping spout from where the transfer to a sepa-rate iron spout and a separate slag spout take place.
In recent times, tapping spouts with larae cross sec-tions in which the pig iron remains also between the taps have been successful. Such spouts make possible longer standing times than those used so far, which have had to be emptied after each tap.
On account of different expansions between the metal jacket and the refractory brickwork, cracks will form in the refractory lining in case of spouts for metal melts, in particular with the spouts that have large cross sec-tions. These cracks often extend not only through the wear lining, with which such spouts are coated as a rule, but also through the permanent lining as far as to the plate armor. Such cracks constitute dangerous weak points of the spout, since pig iron breakthroughs may occur as these cracks are filled with molten pig iron (wha-t is called "fins in the joints"), if the plate armor is melted through.
Pig iron breakthroughs not only cause considerable damage to the spouts themselves and to the platform structure, but 1 ~
~ ~v~
they also reduce the availability of the furnace. Further-more, the operating personnel is jeopardized. The time and expenditures necessary for a repair after a pig iron break-through caused by joint fins are considerable.
For preventing joint fins that reach as far as to the plate armor it is known to construct spouts with an ex-treme thic]cness of the brickwork. Thereby attempts have been made to cause -the pig iron penetratin~ a crack to cool on account of the temperature drop in the brickwork in order to avoid a damage to the plate armor. Apart from the fact that the danger of joint fins reaching to the plate armor cannot be completely eliminated by such a con-struction, this solution necessitates high expenditures for the brickwork.
From German Offenlegungsschrift No. 28 36 123 a tap-ping spout is known which is composed of several parts, the side walls and the bottom of the plate armor being formed by individual plates that are non-positively con-nected ina sliding manner on their common sites of contact.
The refractory lining of the spouts is braced on the front sides stationarily in the pla-tform structure. Also with a spout of this kind the danger of a pig iron breakthrough caused by a joint fin exists. ~oreover, the non-positive sliding of the plates of the plate armor contacting one another during operation constitutes a problem.
The invention aims at avoiding these disadvantages and difflculties and has as its object to provide a spout of the initially defined kind, in which cracks and thus joint fins as well as spout breakthroughs thereby caused are prevented despite a wall thickness of the refractory ~ 9 lining as slight as possible.
The invention provides in a spou-t arrangement for a metal melt, in particular a tapping spout of a blast furnace for producing pig iron, of the type including a trough-shaped metal jacket and a refractory lining provided on said metal jacket and adapted to accommodate a metal melt, and at least one cavity to receive a coolant to flow therethrough, the improvement which is characterized in that a distribution box is arranged on one end of said spout and ribs are provided within said at least one cavity for conducting said coolant, said ribs departing from said distribution box and extending in the longitudinal direc-tion of said spout, and that air is provided as said coolant.
The cooling of the metal jacket causes it to expand by a lesser degree -than the lining, so that the lining always is under compressive strain during operation of -the spout.
Joints into which pig iron might penetrate are thus safely avoided.
The cavity of the metal jacket is suitably subdivided by the ribs into individual segments to which the coolant is supplied independently.
According to a preferred embodiment discharge con duits for the coolant are connected to one end of the spout, in which conduits control valves are provided for controlling the coolant flow.
A preferred feature of the invention is to be seen in the fact that no strains should be formed within the spout by its mounting, which might also be responsible for joint fins.
This object is achieved by fixing the metal jacket on -the base by means of a fixed bearing in its lonyitudinal direction on the one hand and by mounting it by means ,., of rollers ~o as to be displaceable relative to the base for accommodating longitudinal expansions on the other hand.
Suitab]y, the metal jacket is inserted in a sectlonal frame, the sectional frame advantageously comprising la-terally cantilevered carriers on the upper rim of the me-tal jacket, which carriers are suppoxted relative to the base via rollers.
For preventing slanted positions of individual roll-ers and a thus caused jamming of the same, the rollers aredivided into -two roller bodies by means of a peripheral groove and are guided by means of a guide ledge arranged on the base and engaging in the groove.
The invention will now be explained in ~ore detail by way of two embodiments and with reference to the accompany-ing drawings, wherein:
Figs. 1 and 2 are each a longitudinal section through a spout, the fixed point of the spout once (Fig. 1) being in the region of the pig iron tap and once (Fig. 2) being provided on the opposite end;
Fig. 3 illustrates a section according to lines III-III of Figs. 1 and 2 on an enlarged scale;
Fig. 4 is a view in the direction of the arro~ IV of Fig. 3; and Fig. 5 represents a partially sectioned perspective view of the plate armor of the spout.
In the casing 1 of a blast furnace -to be used for the production of pig iron, a tap hole 2 is provided, upon which a tapping spout 3, i.e. a socalled "pool spou-t" fol-lows. This spout comprises a metal jacket that is designed -- 4 ~
as a plate armor of steel, a permanent lining 5, and awear lining 6 provided on the latter. In the lower spout region, seen in the flow direction of the pig iron, a re-taining brick 7 is arranged, which extends over the total clear opening of the spout. By this retaining brick, which serves for separating pig iron and slag, the slag floating on the pig iron is retained and diverted into a slag spout (not illustrated in the figures) via an outlet 3 provided in a side wall of the spout above the retaining brick 7. The pig iron is flowing through a gap 9 provided between the retaining brick 7 and the bottom of the spoutO
Below the retaining brick 7, the bottom of the spout is elevated to a level 10 in the manner of a weir. On account of the bottom level being elevated, the pig iron is re-tained in the spout. The pig iron is discharged via this elevated level 10 into an iron spout (not illustrated in the figures).
The plate armor 4 is connected with the platform structure either via a fixed point 11 in the region of the tap hole 2 (Fig. 1) or via a fixed point 12 on the opposite end in the region of the retaining brick 7 (Fig. 2). The spout is arranged in a spout bed 13 attached to the cast-ing pla~form. The plate armor 4 is composed of a welded plate structure with a double wall, i.e. of an inner shell 4l and an outer shell 4". The two shells are connected by reinforcement ribs 14 arranged in the longi-tudinal direc-tion. On the outer side, the plate armor 4 is held together at structurally dependent distances of about 700 mm each by welded sectional frames 15 including laterally canti-levered parts 15' in the region of the upper rim of the spout. The outer ends of the cantilevered parts 15' areconnected by carriers 16 extending in the longitudinal direction of the spout.
Rails 17 are mounted on sockets 13' of the spout bed 13, projecting upwardly from the mill floor. ~etween these rails and running surfaces 18 provided on the lower rim of the carriers 16, the spout 3, on eithex side, is journaled via rollers 19 in the region of each sectional frame 15.
In order to achieve a parallel guidance of the rollers 19, a groove 19' is turned into each of the rollers in the middle thereof. This groove 19' engages in a guide ledge 20 fastened on the rails 17. On their two ends, the guide ledges 20 are provided with braking-shoe like elevations for delimiting the roller path.
A coolant is guided through the cavity 4''' enclosed by the inner shell 4' and the outer shell 4" of the plate armor 4, which absorbs the heat amount released by the spout to conduct it away. Preferably, air is provided as a coolant.
When using air~ the latter is supplied to the plate armor 4 through several fans (not illustrated in the fiy-ures), at least one of which serves as a stand-by fan, via a compressed-air conduit 21. The compressed-air con-duit 21 is divided into two partial conduits 21', 21" be-fore being connected to the plate armor 4, which feed a left-side distribution box 22 and a right-side distribution box 23 via resilient in-termediate members (not illustra--ted). Each of these distribution bo~es supplies one half of the spout with cooling air.
The reinforcement ribs 14 provided between the inner shell 4' and the outer shell 4" at the same -time serve as air conducting plates and for subdividing the plate ar-mor into segments independently supplied with coolant.
In the example illustrated in Fig. 5, a ~ottom seg-ment and three wall segments are provided in each spout half, whose discharge conduits are denoted by 24, 24' for the bottom segments, and by 25, 25', 26, 26', 27, 27' for the wall segments. In each discharye conduit a control valve designed as a control flap is provided. The control flaps are denoted by 28, 2~, 30, 31, 32, 33, 34, 35. By adjusting the control flaps, it is possible to reach a dis--tribution of the amount of cooling air supplied via the conduits 21, 21', 21" and the distribution boxes 22 and 23 to the various cooling segments in accordance with the respective requirements. The adjustment of the control flaps is effected via temperature measuring means arranged in the individual cooling segments (not illustrated).
With the arrangement illustrated in Fig. 5, also the region around the tap hole 2, i.e. the dome 36, is cooled by the cooling air conducted away from the bo-ttom segments.
The possible applications of the invention are by no means exhausted with the arrangement illustrated in Fig. 5, but there are a number of feasible variations as to the arrangement and subdivision of the cooling segments as well as the extension of the cooling of the plate armor 4 according to the invention to various plant parts that have to be cooled. According to an embodiment not illus-strated, the plate armor could be provided with half -tubes, i.e. tubes having a semicircular or other sec-tion, on its outer side, these tubes being welded to -the plate armor in a closely neighboring manner. These tubes, together with the plate armor, then constitute the cavity through which the coolant flows.
The advantage of the invention is to be seen primari-ly in the fact that the plate armor, due to its being cool-ed, during operation expands by a slighter measure only than does the refractory lining of the spout, the refrac-tory lining of the spout thus always being under pressure tension. Therefore, no joints can form into which pig iron might penetrate. In this connection, the one-part construc-tion of the spout according to the invention is of a parti-cular advantage.
The brickwork therefore may be designed relatively thin; its durability is about 5 to 8 times the durability of a conventional spout despite its slight wall thickness.
So far, the sealing brickwork has had to be renewed after the tapping of 40,000 to 50,000 t of pig iron, whereas re-pair work at the spout according to the invention is ne-cessary only after the tapping of 250,000 to 320,000 t of pig iron.
The tapping of pig iron and slag from a blast furnace takes place in periodic intervals. The pig iron and the slag have to be supplied separately to the transportina vessels available for the removal from the blast furnace region. The separation of pig iron and slag is effected in the main tapping spout from where the transfer to a sepa-rate iron spout and a separate slag spout take place.
In recent times, tapping spouts with larae cross sec-tions in which the pig iron remains also between the taps have been successful. Such spouts make possible longer standing times than those used so far, which have had to be emptied after each tap.
On account of different expansions between the metal jacket and the refractory brickwork, cracks will form in the refractory lining in case of spouts for metal melts, in particular with the spouts that have large cross sec-tions. These cracks often extend not only through the wear lining, with which such spouts are coated as a rule, but also through the permanent lining as far as to the plate armor. Such cracks constitute dangerous weak points of the spout, since pig iron breakthroughs may occur as these cracks are filled with molten pig iron (wha-t is called "fins in the joints"), if the plate armor is melted through.
Pig iron breakthroughs not only cause considerable damage to the spouts themselves and to the platform structure, but 1 ~
~ ~v~
they also reduce the availability of the furnace. Further-more, the operating personnel is jeopardized. The time and expenditures necessary for a repair after a pig iron break-through caused by joint fins are considerable.
For preventing joint fins that reach as far as to the plate armor it is known to construct spouts with an ex-treme thic]cness of the brickwork. Thereby attempts have been made to cause -the pig iron penetratin~ a crack to cool on account of the temperature drop in the brickwork in order to avoid a damage to the plate armor. Apart from the fact that the danger of joint fins reaching to the plate armor cannot be completely eliminated by such a con-struction, this solution necessitates high expenditures for the brickwork.
From German Offenlegungsschrift No. 28 36 123 a tap-ping spout is known which is composed of several parts, the side walls and the bottom of the plate armor being formed by individual plates that are non-positively con-nected ina sliding manner on their common sites of contact.
The refractory lining of the spouts is braced on the front sides stationarily in the pla-tform structure. Also with a spout of this kind the danger of a pig iron breakthrough caused by a joint fin exists. ~oreover, the non-positive sliding of the plates of the plate armor contacting one another during operation constitutes a problem.
The invention aims at avoiding these disadvantages and difflculties and has as its object to provide a spout of the initially defined kind, in which cracks and thus joint fins as well as spout breakthroughs thereby caused are prevented despite a wall thickness of the refractory ~ 9 lining as slight as possible.
The invention provides in a spou-t arrangement for a metal melt, in particular a tapping spout of a blast furnace for producing pig iron, of the type including a trough-shaped metal jacket and a refractory lining provided on said metal jacket and adapted to accommodate a metal melt, and at least one cavity to receive a coolant to flow therethrough, the improvement which is characterized in that a distribution box is arranged on one end of said spout and ribs are provided within said at least one cavity for conducting said coolant, said ribs departing from said distribution box and extending in the longitudinal direc-tion of said spout, and that air is provided as said coolant.
The cooling of the metal jacket causes it to expand by a lesser degree -than the lining, so that the lining always is under compressive strain during operation of -the spout.
Joints into which pig iron might penetrate are thus safely avoided.
The cavity of the metal jacket is suitably subdivided by the ribs into individual segments to which the coolant is supplied independently.
According to a preferred embodiment discharge con duits for the coolant are connected to one end of the spout, in which conduits control valves are provided for controlling the coolant flow.
A preferred feature of the invention is to be seen in the fact that no strains should be formed within the spout by its mounting, which might also be responsible for joint fins.
This object is achieved by fixing the metal jacket on -the base by means of a fixed bearing in its lonyitudinal direction on the one hand and by mounting it by means ,., of rollers ~o as to be displaceable relative to the base for accommodating longitudinal expansions on the other hand.
Suitab]y, the metal jacket is inserted in a sectlonal frame, the sectional frame advantageously comprising la-terally cantilevered carriers on the upper rim of the me-tal jacket, which carriers are suppoxted relative to the base via rollers.
For preventing slanted positions of individual roll-ers and a thus caused jamming of the same, the rollers aredivided into -two roller bodies by means of a peripheral groove and are guided by means of a guide ledge arranged on the base and engaging in the groove.
The invention will now be explained in ~ore detail by way of two embodiments and with reference to the accompany-ing drawings, wherein:
Figs. 1 and 2 are each a longitudinal section through a spout, the fixed point of the spout once (Fig. 1) being in the region of the pig iron tap and once (Fig. 2) being provided on the opposite end;
Fig. 3 illustrates a section according to lines III-III of Figs. 1 and 2 on an enlarged scale;
Fig. 4 is a view in the direction of the arro~ IV of Fig. 3; and Fig. 5 represents a partially sectioned perspective view of the plate armor of the spout.
In the casing 1 of a blast furnace -to be used for the production of pig iron, a tap hole 2 is provided, upon which a tapping spout 3, i.e. a socalled "pool spou-t" fol-lows. This spout comprises a metal jacket that is designed -- 4 ~
as a plate armor of steel, a permanent lining 5, and awear lining 6 provided on the latter. In the lower spout region, seen in the flow direction of the pig iron, a re-taining brick 7 is arranged, which extends over the total clear opening of the spout. By this retaining brick, which serves for separating pig iron and slag, the slag floating on the pig iron is retained and diverted into a slag spout (not illustrated in the figures) via an outlet 3 provided in a side wall of the spout above the retaining brick 7. The pig iron is flowing through a gap 9 provided between the retaining brick 7 and the bottom of the spoutO
Below the retaining brick 7, the bottom of the spout is elevated to a level 10 in the manner of a weir. On account of the bottom level being elevated, the pig iron is re-tained in the spout. The pig iron is discharged via this elevated level 10 into an iron spout (not illustrated in the figures).
The plate armor 4 is connected with the platform structure either via a fixed point 11 in the region of the tap hole 2 (Fig. 1) or via a fixed point 12 on the opposite end in the region of the retaining brick 7 (Fig. 2). The spout is arranged in a spout bed 13 attached to the cast-ing pla~form. The plate armor 4 is composed of a welded plate structure with a double wall, i.e. of an inner shell 4l and an outer shell 4". The two shells are connected by reinforcement ribs 14 arranged in the longi-tudinal direc-tion. On the outer side, the plate armor 4 is held together at structurally dependent distances of about 700 mm each by welded sectional frames 15 including laterally canti-levered parts 15' in the region of the upper rim of the spout. The outer ends of the cantilevered parts 15' areconnected by carriers 16 extending in the longitudinal direction of the spout.
Rails 17 are mounted on sockets 13' of the spout bed 13, projecting upwardly from the mill floor. ~etween these rails and running surfaces 18 provided on the lower rim of the carriers 16, the spout 3, on eithex side, is journaled via rollers 19 in the region of each sectional frame 15.
In order to achieve a parallel guidance of the rollers 19, a groove 19' is turned into each of the rollers in the middle thereof. This groove 19' engages in a guide ledge 20 fastened on the rails 17. On their two ends, the guide ledges 20 are provided with braking-shoe like elevations for delimiting the roller path.
A coolant is guided through the cavity 4''' enclosed by the inner shell 4' and the outer shell 4" of the plate armor 4, which absorbs the heat amount released by the spout to conduct it away. Preferably, air is provided as a coolant.
When using air~ the latter is supplied to the plate armor 4 through several fans (not illustrated in the fiy-ures), at least one of which serves as a stand-by fan, via a compressed-air conduit 21. The compressed-air con-duit 21 is divided into two partial conduits 21', 21" be-fore being connected to the plate armor 4, which feed a left-side distribution box 22 and a right-side distribution box 23 via resilient in-termediate members (not illustra--ted). Each of these distribution bo~es supplies one half of the spout with cooling air.
The reinforcement ribs 14 provided between the inner shell 4' and the outer shell 4" at the same -time serve as air conducting plates and for subdividing the plate ar-mor into segments independently supplied with coolant.
In the example illustrated in Fig. 5, a ~ottom seg-ment and three wall segments are provided in each spout half, whose discharge conduits are denoted by 24, 24' for the bottom segments, and by 25, 25', 26, 26', 27, 27' for the wall segments. In each discharye conduit a control valve designed as a control flap is provided. The control flaps are denoted by 28, 2~, 30, 31, 32, 33, 34, 35. By adjusting the control flaps, it is possible to reach a dis--tribution of the amount of cooling air supplied via the conduits 21, 21', 21" and the distribution boxes 22 and 23 to the various cooling segments in accordance with the respective requirements. The adjustment of the control flaps is effected via temperature measuring means arranged in the individual cooling segments (not illustrated).
With the arrangement illustrated in Fig. 5, also the region around the tap hole 2, i.e. the dome 36, is cooled by the cooling air conducted away from the bo-ttom segments.
The possible applications of the invention are by no means exhausted with the arrangement illustrated in Fig. 5, but there are a number of feasible variations as to the arrangement and subdivision of the cooling segments as well as the extension of the cooling of the plate armor 4 according to the invention to various plant parts that have to be cooled. According to an embodiment not illus-strated, the plate armor could be provided with half -tubes, i.e. tubes having a semicircular or other sec-tion, on its outer side, these tubes being welded to -the plate armor in a closely neighboring manner. These tubes, together with the plate armor, then constitute the cavity through which the coolant flows.
The advantage of the invention is to be seen primari-ly in the fact that the plate armor, due to its being cool-ed, during operation expands by a slighter measure only than does the refractory lining of the spout, the refrac-tory lining of the spout thus always being under pressure tension. Therefore, no joints can form into which pig iron might penetrate. In this connection, the one-part construc-tion of the spout according to the invention is of a parti-cular advantage.
The brickwork therefore may be designed relatively thin; its durability is about 5 to 8 times the durability of a conventional spout despite its slight wall thickness.
So far, the sealing brickwork has had to be renewed after the tapping of 40,000 to 50,000 t of pig iron, whereas re-pair work at the spout according to the invention is ne-cessary only after the tapping of 250,000 to 320,000 t of pig iron.
Claims (7)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In a spout arrangement for a metal melt, in particular a tapping spout of a blast furnace for producing pig iron, of the type including a trough-shaped metal jacket and a refractory lining provided on said metal jacket and adapted to accommodate a metal melt, and at least one cavity to receive a coolant to flow there-through, the improvement which is characterized in that a distribution box is arranged on one end of said spout and ribs are provided within said at least one cavity for conducting said coolant, said ribs departing from said distribution box and extending in the longitudinal direction of said spout, and that air is provided as said coolant.
2. A spout arrangement as set forth in claim 1, wherein said at least one cavity of said metal jacket is sub-divided into individual segments by said ribs, each of said individual segments being supplied with coolant independently.
3. A spout arrangement as set forth in claim 1, further comprising discharge conduits for said coolant connect-ed to one end of said spout and control valves provided in said discharge conduits to control the flow of said coolant.
4. A spout arrangement as set forth in claim 1, further comprising a base, a fixed bearing for mounting said metal jacket on said base so as to be fixed in its longitudinal direction, and rollers for journaling said metal jacket so as to be displaceable relative to said base for accommodating longitudinal expansions.
5. A spout arrangement as set forth in claim 4, further comprising a sectional frame in which said metal jacket is inserted.
6. A spout arrangement as set forth in claim 5, further comprising laterally cantilevered carriers provided on said sectional frame on the upper rim of said metal jacket, and rollers for supporting said laterally can-tilevered carriers relative to said base.
7. A spout arrangement as set forth in claim 6, further comprising a peripheral groove for dividing said roll-ers so as to obtain two roller bodies, and a guide ledge arranged on said base and engaging in said groove for guiding said rollers.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA1002/81 | 1981-03-04 | ||
| AT0100281A AT370133B (en) | 1981-03-04 | 1981-03-04 | GUTTER FOR A METAL MELT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1194695A true CA1194695A (en) | 1985-10-08 |
Family
ID=3504681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000396633A Expired CA1194695A (en) | 1981-03-04 | 1982-02-19 | Spout arrangement for a metal melt |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0060239B1 (en) |
| JP (1) | JPS57158306A (en) |
| AT (1) | AT370133B (en) |
| CA (1) | CA1194695A (en) |
| DE (1) | DE3260426D1 (en) |
| SU (1) | SU1138037A3 (en) |
| ZA (1) | ZA82913B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013185223A1 (en) * | 2012-06-14 | 2013-12-19 | Les Produits Industriels De Haute Temperature Pyrotek Inc. | Receptacle for handling molten metal, casting assembly and manufacturing method |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU84042A1 (en) * | 1982-03-26 | 1983-11-17 | Arbed | CASTING RIGOLE FOR LIQUID METALS |
| DE3339135A1 (en) * | 1983-10-28 | 1985-05-09 | Betriebsforschungsinstitut VDEh - Institut für angewandte Forschung GmbH | ROLLER GUTTER FOR A SHAFT |
| NL8803103A (en) * | 1988-12-19 | 1990-07-16 | Hoogovens Groep Bv | IRON GUT. |
| NL8901556A (en) * | 1989-06-21 | 1991-01-16 | Hoogovens Groep Bv | IRON GUT. |
| US5088695A (en) * | 1991-03-05 | 1992-02-18 | Hoogovens Groep Bv | Iron runner |
| NL1003885C2 (en) * | 1996-08-27 | 1998-03-03 | Hoogovens Tech Services | Gutter for a hot melt and gutter system. |
| NL1007881C2 (en) * | 1997-12-23 | 1999-06-24 | Hoogovens Tech Services | Gutter for conducting a flow of liquid metal. |
| JP5705582B2 (en) * | 2011-02-23 | 2015-04-22 | 新日鉄住金エンジニアリング株式会社 | How to cool firewood and firewood |
| CN102827979B (en) * | 2012-09-25 | 2014-07-09 | 莱芜钢铁集团有限公司 | Blast furnace slag trough and sealing structure thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB773272A (en) * | 1954-07-29 | 1957-04-24 | Kaiser Aluminium Chem Corp | Improvements in or relating to molten metal transfer troughs |
| DE1244213B (en) * | 1964-07-11 | 1967-07-13 | Babcock & Wilcox Dampfkessel | Slag discharge device for slag refining plants |
| DE2428590A1 (en) * | 1974-06-10 | 1975-12-18 | Hassanzadeh M Reza Dipl Ing | Blast furnace slag spout made from water-cooled metal pipe - so layer of solidified slag acts as spout lining |
| JPS5432193A (en) * | 1977-08-17 | 1979-03-09 | Nippon Kokan Kk <Nkk> | Molten slag runner for production of hard granulated slag |
-
1981
- 1981-03-04 AT AT0100281A patent/AT370133B/en not_active IP Right Cessation
-
1982
- 1982-02-12 ZA ZA82913A patent/ZA82913B/en unknown
- 1982-02-19 CA CA000396633A patent/CA1194695A/en not_active Expired
- 1982-03-01 DE DE8282890030T patent/DE3260426D1/en not_active Expired
- 1982-03-01 EP EP82890030A patent/EP0060239B1/en not_active Expired
- 1982-03-03 SU SU823398518A patent/SU1138037A3/en active
- 1982-03-03 JP JP57032516A patent/JPS57158306A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013185223A1 (en) * | 2012-06-14 | 2013-12-19 | Les Produits Industriels De Haute Temperature Pyrotek Inc. | Receptacle for handling molten metal, casting assembly and manufacturing method |
| US9073119B2 (en) | 2012-06-14 | 2015-07-07 | Pyrotek Inc. | Receptacle for handling molten metal, casting assembly and manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| SU1138037A3 (en) | 1985-01-30 |
| ZA82913B (en) | 1983-01-26 |
| ATA100281A (en) | 1982-07-15 |
| AT370133B (en) | 1983-03-10 |
| DE3260426D1 (en) | 1984-08-30 |
| JPS6121283B2 (en) | 1986-05-26 |
| JPS57158306A (en) | 1982-09-30 |
| EP0060239B1 (en) | 1984-07-25 |
| EP0060239A1 (en) | 1982-09-15 |
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