EP0090761B1 - Rigole de coulée pour métaux liquides - Google Patents

Rigole de coulée pour métaux liquides Download PDF

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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
Application number
EP83630051A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0090761A1 (fr
Inventor
Georges Fleming
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.)
Arcelor Luxembourg SA
Original Assignee
Arbed SA
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 Arbed SA filed Critical Arbed SA
Priority to AT83630051T priority Critical patent/ATE32350T1/de
Publication of EP0090761A1 publication Critical patent/EP0090761A1/fr
Application granted granted Critical
Publication of EP0090761B1 publication Critical patent/EP0090761B1/fr
Expired legal-status Critical Current

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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)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Ceramic Products (AREA)
EP83630051A 1982-03-26 1983-03-15 Rigole de coulée pour métaux liquides Expired EP0090761B1 (fr)

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 (fr) 1983-10-05
EP0090761B1 true EP0090761B1 (fr) 1988-02-03

Family

ID=19729848

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83630051A Expired EP0090761B1 (fr) 1982-03-26 1983-03-15 Rigole de coulée pour métaux liquides

Country Status (15)

Country Link
US (1) US4508323A (enrdf_load_stackoverflow)
EP (1) EP0090761B1 (enrdf_load_stackoverflow)
JP (1) JPS58181812A (enrdf_load_stackoverflow)
KR (1) KR910001483B1 (enrdf_load_stackoverflow)
AR (1) AR230579A1 (enrdf_load_stackoverflow)
AT (1) ATE32350T1 (enrdf_load_stackoverflow)
AU (1) AU554627B2 (enrdf_load_stackoverflow)
BR (1) BR8301539A (enrdf_load_stackoverflow)
CA (1) CA1210583A (enrdf_load_stackoverflow)
DE (1) DE3375582D1 (enrdf_load_stackoverflow)
ES (1) ES8407101A1 (enrdf_load_stackoverflow)
LU (1) LU84042A1 (enrdf_load_stackoverflow)
MX (1) MX158032A (enrdf_load_stackoverflow)
PT (1) PT76439B (enrdf_load_stackoverflow)
ZA (1) ZA832009B (enrdf_load_stackoverflow)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
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 (en) * 1991-02-27 1992-09-02 Hoogovens Groep B.V. Iron runner
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)

* Cited by examiner, † Cited by third party
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 (enrdf_load_stackoverflow) * 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

Also Published As

Publication number Publication date
MX158032A (es) 1988-12-18
KR840003970A (ko) 1984-10-06
ES520463A0 (es) 1984-08-16
AU1269083A (en) 1983-09-29
CA1210583A (fr) 1986-09-02
BR8301539A (pt) 1983-12-06
DE3375582D1 (en) 1988-03-10
EP0090761A1 (fr) 1983-10-05
ATE32350T1 (de) 1988-02-15
US4508323A (en) 1985-04-02
KR910001483B1 (ko) 1991-03-09
AU554627B2 (en) 1986-08-28
PT76439B (fr) 1985-12-20
JPS58181812A (ja) 1983-10-24
ES8407101A1 (es) 1984-08-16
LU84042A1 (fr) 1983-11-17
JPH0225962B2 (enrdf_load_stackoverflow) 1990-06-06
ZA832009B (en) 1983-11-30
PT76439A (fr) 1983-04-01
AR230579A1 (es) 1984-05-31

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