EP0090761B1 - Rinne für eine Metallschmelze - Google Patents
Rinne für eine Metallschmelze Download PDFInfo
- Publication number
- EP0090761B1 EP0090761B1 EP83630051A EP83630051A EP0090761B1 EP 0090761 B1 EP0090761 B1 EP 0090761B1 EP 83630051 A EP83630051 A EP 83630051A EP 83630051 A EP83630051 A EP 83630051A EP 0090761 B1 EP0090761 B1 EP 0090761B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- conduits
- thermal contact
- spout according
- spout
- 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 title claims description 12
- 239000002184 metal Substances 0.000 title claims description 11
- 229910001018 Cast iron Inorganic materials 0.000 claims description 14
- 229910002804 graphite Inorganic materials 0.000 claims description 12
- 239000010439 graphite Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 239000011819 refractory material Substances 0.000 claims description 5
- 239000002826 coolant Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 2
- 239000000110 cooling liquid Substances 0.000 claims 6
- 239000000126 substance Substances 0.000 claims 1
- 239000011449 brick Substances 0.000 description 13
- 238000001816 cooling Methods 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000011150 reinforced concrete Substances 0.000 description 6
- 229910001338 liquidmetal Inorganic materials 0.000 description 5
- 239000002893 slag Substances 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000012809 cooling fluid Substances 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000003570 air Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
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
Definitions
- the present invention relates to a pouring channel intended to receive liquid metals from a furnace and in particular from the cast iron of a blast furnace.
- Drains comprising a wear refractory layer, in contact with the liquid metal, enveloped by a permanent coating which is housed directly in the reinforced concrete slab of the pouring floor.
- the channel fills with cast iron and slag which floats.
- a baffle system allows density separation of the pig iron and the slag.
- the channel is emptied and it is necessary to carry out work of restoration.
- the accessibility of the hot channel as well as the duration of these works prevent a rapid re-use of the channel, which is incompatible with the rate of casting of modern blast furnaces.
- Rehabilitation involves a large volume of strenuous work.
- the permanent presence of liquid iron in the channel results in a continuous thermal flow towards the reinforced concrete of the slab of the pouring floor which heats up in its mass, which causes stresses of expansion, bursts and cracks.
- a channel for liquid metals in which a wall with high thermal conductivity is disposed on each lateral side of the channel.
- Each of the walls is traversed longitudinally by a slot-shaped duct. This duct can guide air, steam or water as a coolant.
- the object of the present invention is to propose a channel which does not have the defects described above and which is capable of being installed directly in the reinforced concrete structures of the pouring floor.
- the advantages of the channel are due to the presence of a layer of material maintained at low temperature and practically isothermal, which limits the heating of the support structures of the channel and which by its great capacity of distribution and evacuation of calories. allows all liquid metal infiltration to be frozen in the permanent refractory lining of the channel. As the distribution of temperatures in the refractory lining can be calculated, well-defined expansion joints can be provided without danger, which reduces the mechanical stresses, due to thermal expansion, experienced by the assembly and transmitted to the supporting structures of the channel . In addition, by using refractories in the permanent layer before different thermal conductivities, it is possible either to thermally isolate different zones of the channel to limit the heat losses of the cast iron, or on the contrary to cool more intensively zones which are highly stressed. The overall cooling rate is always quite low, so that the cast iron remains liquid even if the interval between two successive castings is 5 to 8 hours.
- FIG. 1 shows a partial section through a channel according to the invention.
- a cast iron bath 1, carrying a layer of slag 2, is in contact with a wear layer 3, the section of which is U-shaped.
- This wear layer 3 consisting of an unshaped material, is produced on a permanent covering 4, which in the present case consists of two layers of overlapping bricks.
- the outer layer of bricks rests against graphite blocks 7 and cooling elements 10.
- These elements 10 arranged both in the side walls and in the bottom of the channel are formed by sealed longitudinal conduits 5, in which water circulates, sandwiched between flat graphite bricks 6 and 8.
- the bricks 8 are in contact with the permanent coating 4.
- the space 9 between the conduits 5, the bricks 6 and 8 as well as the graphite blocks 7, is filled with an unshaped material, good conductor of heat, ensuring good thermal contact with the cooling tubes.
- the unshaped material also allows expansion of the conduits caused by small temperature variations.
- the channel is housed in a reinforced concrete slab 12.
- An equalizing layer 11 eliminates the roughness of the concrete.
- the permanent coating 4 made of bricks capable of withstanding the direct action of cast iron constitutes a thermal barrier which prevents the cooling system from drawing too much heat from the liquid cast iron.
- the material of the bricks resp. the number of brick layers to be superimposed is chosen in accordance with the desired degree of thermal insulation. Preferential cooling of certain highly stressed areas can be achieved by a judicious choice of the quality of the bricks of the refractory lining of the permanent layer. To drastically reduce the erosion of the wear layer, at the points where it is particularly stressed, one can replace some of the bricks of the coating 4 by bricks with high thermal conductivity 4a, which are preferably made of semi-graphite .
- conduits guiding the cooling fluid may be advantageous to fix the conduits guiding the cooling fluid to the outside thereon, eg by welding.
- the channel is particularly suitable for being housed directly in the reinforced concrete structure of the pouring floor.
- the conduits guiding the cooling fluid may be placed outside the construction p. ex. by welding U irons along the sheet. The heat flow between the low temperature zone and the cooling system in this case passes through the support sheets without significant heating (temperature below 100 ° C).
- the spacing, shape and arrangement of the conduits must be chosen as a function of the thermal conductivity and the thickness of the layer constituting the low temperature zone as well as the desired temperature profile in the refractory lining.
- the conduits can be supplied in parallel or in series. To optimize the operation of the channel, the temperature of the coolant can be monitored and the flow rate can be varied depending on the temperature.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Blast Furnaces (AREA)
- Furnace Charging Or Discharging (AREA)
- Ceramic Products (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Claims (11)
1. Giessrinne zum Aufnehmen von schmelzflüssigen Metallen insbesondere von Hochofen-Roheisen bestehend aus einer ersten U-förmigen feuerfesten Verschleisschicht (3), die aus am Boden miteinander verbundenen zwei seitlichen Wänden zur Führung des flüssigen Metalls besteht, wobei diese erste Schicht (3) in einer ebenfalls U-förmigen, mit der ersten Schicht in thermischem Kontakt stehenden haltbaren zweiten Feuerfestschicht (4), die ihrerseits in thermischem Kontakt mit Kühlmittelfördernden Leitungen (5) steht, eingebettet ist, dadurch gekennzeichnet, dass die zweite Schicht (4) im thermischen Kontakt mit einer dritten isothermen Schicht (7) umgeben ist, deren Seitenwände und Boden hauptsächlich erstellt sind aus einem Produkt auf Basis/oder aus Graphit, Semigraphit oder Siliziumcarbid, das eine Wärmeleitfähigkeit von mehr als 12 W/m ° K aufweist und, dass durch die Leitungen (5), welche in thermischem Kontakt zu den Seitenwänden und dem Boden der dritten Schicht (7) stehen, ein flüssiges Kühlmittel geführt wird.
2. Giessrinne gemäss Anspruch 1, dadurch gekennzeichnet, dass die dritte Schicht (7) eine Wärmeleitfähigkeit von mehr als 30 W/m ° K besitzt.
3. Giessrinne gemäss Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Leitungen (5), durch die ein flüssiges Kühlmittel geführt wird, in der dritten Schicht (7) eingelagert sind.
4. Giessrinne gemäss Anspruch 1 oder 2, dadurch gekennzeichnet, dass die flüssiges Kühlmittel fördernden Leitungen (5) in oder auf einer Schicht, die im thermischen Kontakt mit der dritten Schicht (7) steht, eingelagert oder befestigt sind.
5. Giessrinne gemäss Anspruch 1, dadurch gekennzeichnet, dass die dritte Schicht (7) aus Materialien mit unterschiedlichen Eigenschaften besteht.
6. Giessrinne gemäss Anspruch 1, dadurch gekennzeichnet, dass die dritte Schicht (7) verschiedene Dicken aufweist.
7. Giessrinne gemäss Ansprüchen 1, oder 6, dadurch gekennzeichnet, dass die Verlegung, die Anzahl und die Abmessungen der Leitungen (5), durch die das flüssige Kühlmittel geführt wird, abhängig ist vom gewünschten Temperaturprofil in der ersten Schicht (3).
8. Giessrinne gemäss Anspruch 1, dadurch gekennzeichnet, dass die zweite Schicht (4) zum Teil aus einem Material (4a) besteht, das eine Wärmeleitfähigkeit von mehr als 12 W/m ° K aufweist.
9. Giessrinne zum Aufnehmen von schmelzflüssigen Metallen, insbesondere von Hochofen-Roheisen, bestehend aus einer ersten U-förmigen feuerfesten Verschleisschicht (3), beschreibend zwei über einen Boden verbundene im Kontakt mit dem flüssigen Metall stehende Seitenwände, wobei diese erste Schicht (3) in einer zweiten Schicht (4) aus haltbarem Feuerfestmaterial eingebettet ist, die ebenfalls U-förmig ausgebildet ist und die mit der ersten Schicht im thermischen Verbund steht und wobei diese zweite Schicht (4) im thermischen Verbund in eine dritte Schicht (7) eingelagert ist, deren Boden und Seitenwände hauptsächlich aus Metall bestehen, sowie Kühlmittelleitungen (5), die im thermischen Kontakt zu der dritten Schicht (7) stehen, dadurch gekennzeichnet, dass die Mindestdicke der dritten Schicht 5 cm beträgt, dabei eine Mindestwärmeleitfähigkeit von 12 W/m ° K gewährleistet und wobei die Leitungen (5), die im thermischen Kontakt zu den Seitenwänden und dem Boden der dritten Schicht (7) stehen, eine Kühlflüssigkeit führen.
10. Giessrinne gemäss Anspruch 9, dadurch gekennzeichnet, dass die Leitungen (5) von aussen auf die dritte Schicht, vorzugsweise durch Schweissen, angebracht sind.
11. Giessrinne gemäss einem der Ansprüche 1 oder 9, dadurch gekennzeichnet, dass die Kühlflüssigkeit aus Wasser oder Öl besteht.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT83630051T ATE32350T1 (de) | 1982-03-26 | 1983-03-15 | Rinne fuer eine metallschmelze. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU84042 | 1982-03-26 | ||
| LU84042A LU84042A1 (fr) | 1982-03-26 | 1982-03-26 | Rigole de coulee pour metaux liquides |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0090761A1 EP0090761A1 (de) | 1983-10-05 |
| EP0090761B1 true EP0090761B1 (de) | 1988-02-03 |
Family
ID=19729848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP83630051A Expired EP0090761B1 (de) | 1982-03-26 | 1983-03-15 | Rinne für eine Metallschmelze |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US4508323A (de) |
| EP (1) | EP0090761B1 (de) |
| JP (1) | JPS58181812A (de) |
| KR (1) | KR910001483B1 (de) |
| AR (1) | AR230579A1 (de) |
| AT (1) | ATE32350T1 (de) |
| AU (1) | AU554627B2 (de) |
| BR (1) | BR8301539A (de) |
| CA (1) | CA1210583A (de) |
| DE (1) | DE3375582D1 (de) |
| ES (1) | ES8407101A1 (de) |
| LU (1) | LU84042A1 (de) |
| MX (1) | MX158032A (de) |
| PT (1) | PT76439B (de) |
| ZA (1) | ZA832009B (de) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3339135A1 (de) * | 1983-10-28 | 1985-05-09 | Betriebsforschungsinstitut VDEh - Institut für angewandte Forschung GmbH | Abstichrinne fuer einen schachtofen |
| NL8803103A (nl) * | 1988-12-19 | 1990-07-16 | Hoogovens Groep Bv | Ijzergoot. |
| NL8901556A (nl) * | 1989-06-21 | 1991-01-16 | Hoogovens Groep Bv | Ijzergoot. |
| EP0501045A1 (de) * | 1991-02-27 | 1992-09-02 | Hoogovens Groep B.V. | Roheisen-Abstichrinne |
| US5088695A (en) * | 1991-03-05 | 1992-02-18 | Hoogovens Groep Bv | Iron runner |
| NL1003885C2 (nl) * | 1996-08-27 | 1998-03-03 | Hoogovens Tech Services | Goot voor een hete smelt en gootsysteem. |
| NL1007881C2 (nl) * | 1997-12-23 | 1999-06-24 | Hoogovens Tech Services | Goot voor het geleiden van een stroom vloeibaar metaal. |
| LU90195B1 (de) * | 1998-01-15 | 1999-07-16 | Wurth Paul Sa | Abstichrinne fuer eine Eisenschmelze |
| JP5546874B2 (ja) * | 2010-01-13 | 2014-07-09 | 東京窯業株式会社 | 溶銑・ノロ樋 |
| CN101934434B (zh) * | 2010-09-26 | 2012-10-03 | 大庆市锐虹机械制造有限公司 | 铸铁热补焊工艺及装置 |
| CA2876518C (en) * | 2012-06-14 | 2017-03-28 | Les Produits Industriels De Haute Temperature Pyrotek Inc. | Receptacle for handling molten metal, casting assembly and manufacturing method |
| CN106270475B (zh) * | 2016-11-10 | 2018-11-06 | 芜湖新兴铸管有限责任公司 | 浇注包定型包嘴 |
| CN110331247A (zh) * | 2019-08-21 | 2019-10-15 | 北京瑞尔非金属材料有限公司 | 一种冷却型铁水主沟和冷却方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB257261A (en) * | 1925-08-20 | 1927-07-21 | Carborundum Co | Improvements in or relating to furnaces |
| JPS422321Y1 (de) * | 1964-09-03 | 1967-02-13 | ||
| DE1956837B2 (de) * | 1969-11-12 | 1973-06-07 | Demag Ag, 4100 Duisburg | Boden-kuehleinrichtung fuer schachtoefen, insbesondere fuer hochoefen |
| SU392093A1 (ru) * | 1971-05-14 | 1973-07-27 | Всесоюзный научно исследовательский , проектный институт очистке технологических газов, сточных вод , использованию вторичных энергоресурсов предпри тий черной металлургии | Желоб для выпуска чугуна |
| NL170437C (nl) * | 1973-09-12 | 1982-11-01 | Estel Hoogovens Bv | Wandconstructie van een schachtoven. |
| US4377277A (en) * | 1979-08-03 | 1983-03-22 | Nippon Steel Corporation | Blast furnace having a cooling device |
| NL8001669A (nl) * | 1980-03-21 | 1981-10-16 | Estel Hoogovens Bv | Vuurvaste constructie van de bodem en het aansluitende haardgedeelte van een schachtoven. |
| AT370133B (de) * | 1981-03-04 | 1983-03-10 | Voest Alpine Ag | Rinne fuer eine metallschmelze |
-
1982
- 1982-03-26 LU LU84042A patent/LU84042A1/fr unknown
-
1983
- 1983-02-22 CA CA000422135A patent/CA1210583A/fr not_active Expired
- 1983-03-10 ES ES520463A patent/ES8407101A1/es not_active Expired
- 1983-03-15 EP EP83630051A patent/EP0090761B1/de not_active Expired
- 1983-03-15 AT AT83630051T patent/ATE32350T1/de not_active IP Right Cessation
- 1983-03-15 DE DE8383630051T patent/DE3375582D1/de not_active Expired
- 1983-03-21 AR AR292458A patent/AR230579A1/es active
- 1983-03-22 AU AU12690/83A patent/AU554627B2/en not_active Ceased
- 1983-03-22 ZA ZA832009A patent/ZA832009B/xx unknown
- 1983-03-23 US US06/478,064 patent/US4508323A/en not_active Expired - Fee Related
- 1983-03-24 KR KR1019830001196A patent/KR910001483B1/ko not_active IP Right Cessation
- 1983-03-24 BR BR8301539A patent/BR8301539A/pt not_active IP Right Cessation
- 1983-03-24 PT PT76439A patent/PT76439B/pt unknown
- 1983-03-25 JP JP58049067A patent/JPS58181812A/ja active Granted
- 1983-03-25 MX MX196718A patent/MX158032A/es unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE3375582D1 (en) | 1988-03-10 |
| LU84042A1 (fr) | 1983-11-17 |
| MX158032A (es) | 1988-12-18 |
| PT76439A (fr) | 1983-04-01 |
| PT76439B (fr) | 1985-12-20 |
| KR910001483B1 (ko) | 1991-03-09 |
| ATE32350T1 (de) | 1988-02-15 |
| KR840003970A (ko) | 1984-10-06 |
| AR230579A1 (es) | 1984-05-31 |
| AU554627B2 (en) | 1986-08-28 |
| BR8301539A (pt) | 1983-12-06 |
| ES520463A0 (es) | 1984-08-16 |
| US4508323A (en) | 1985-04-02 |
| CA1210583A (fr) | 1986-09-02 |
| ZA832009B (en) | 1983-11-30 |
| AU1269083A (en) | 1983-09-29 |
| JPH0225962B2 (de) | 1990-06-06 |
| ES8407101A1 (es) | 1984-08-16 |
| EP0090761A1 (de) | 1983-10-05 |
| JPS58181812A (ja) | 1983-10-24 |
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