US20090065987A1 - Molten metal ladle - Google Patents

Molten metal ladle Download PDF

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Publication number
US20090065987A1
US20090065987A1 US11/665,837 US66583705A US2009065987A1 US 20090065987 A1 US20090065987 A1 US 20090065987A1 US 66583705 A US66583705 A US 66583705A US 2009065987 A1 US2009065987 A1 US 2009065987A1
Authority
US
United States
Prior art keywords
ladle
lining layer
molten metal
opening
innermost surface
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.)
Abandoned
Application number
US11/665,837
Other languages
English (en)
Inventor
Kiyohumi Kawai
Katsuyoshi Mukai
Toshiyuki Matsumoto
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.)
Nippon Crucible Co Ltd
Daiki Aluminium Industry Co Ltd
Original Assignee
Nippon Crucible Co Ltd
Daiki Aluminium Industry Co Ltd
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 Nippon Crucible Co Ltd, Daiki Aluminium Industry Co Ltd filed Critical Nippon Crucible Co Ltd
Assigned to NIPPON CRUCIBLE CO., LTD., DAIKI ALUMINIUM INDUSTRY CO., LTD. reassignment NIPPON CRUCIBLE CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KAWAI, KIYOHUMI, MATSUMOTO, TOSHIYUKI, MUKAI, KATSUYOSHI
Publication of US20090065987A1 publication Critical patent/US20090065987A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/04—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like tiltable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/04—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like tiltable
    • B22D41/05—Tea-pot spout ladles

Definitions

  • the present invention relates to a molten metal ladle.
  • Patent Document 1 discloses an example of such a molten metal ladle.
  • the molten metal ladle 100 disclosed in Patent Document 1 comprises a ladle body 102 having a molten metal discharging tube 101 , and a lid 104 covering an opening 103 provided on top of the ladle body 102 .
  • the ladle body 102 has a cross-sectional structure wherein an outer covering 105 formed of a steel plate is provided on the outermost side, and a lining layer 108 formed of a heat-insulating member 106 and a refractory member 107 is provided inside the outer covering 105 .
  • Patent Document 1 Japanese Unexamined Patent Publication No. 2000-106935
  • An object of the present invention is to solve the above problem and provide a molten metal ladle in which scales, slag and the like that adhere to the lining layer can be easily and reliably removed.
  • a molten metal ladle comprising a bottomed tubular ladle body having an opening in the top, wherein the ladle body has an upper ladle portion and a lower ladle portion, the upper ladle portion being connected to the top end of the lower ladle portion, a lining layer being provided inside the upper ladle portion and the lower ladle portion, and the innermost surface of the lining layer in the upper ladle portion being formed as an inclined plane with its opening area becoming smaller from the top end of the lining layer of the lower ladle portion toward the edge of the opening.
  • the inclined plane have a fixed inclination angle from the top end of the lining layer of the lower ladle portion to the edge of the opening as seen in a vertical sectional view.
  • the lining layer be formed of a heat-insulating member and a refractory member.
  • the present invention provides a molten metal ladle in which scales, slag, etc., that adhere to the surface of the lining layer can be easily and reliably removed.
  • FIG. 1( a ) shows a cross-sectional view of a molten metal ladle according to one embodiment of the present invention
  • FIG. 1 ( b ) shows a cross-sectional view of FIG. 1( a ) taken along the line A-A.
  • FIG. 2 is a cross-sectional view of a molten metal ladle according to another embodiment of the present invention.
  • FIG. 3 is a cross-sectional view of a molten metal ladle according to still another embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of a known molten metal ladle.
  • FIG. 1( a ) is a cross-sectional view of a molten metal ladle according to one embodiment of the present invention
  • FIG. 1 ( b ) is a cross-sectional view of FIG. 1( a ) taken along the line A-A.
  • the molten metal ladle 1 is a ladle from which molten metal is discharged by the application of pressure.
  • the molten metal ladle 1 comprises a ladle body 10 , a molten metal discharging tube 30 , a pressurizing member 31 , a lid 32 , and a pair of feet 33 , 33 .
  • the ladle body 10 has a tubular form with a circular shape as seen in a horizontal sectional view, and comprises a lower ladle portion 11 and an upper ladle portion 12 .
  • the lower ladle portion 11 is a bottomed cylinder having a constant outer diameter, and its upper end is in contact with the upper ladle portion 12 .
  • an opening 13 On top of the upper ladle portion 12 , an opening 13 having a diameter smaller than the inside diameter of the bottom surface of the lower ladle portion 11 is formed.
  • the upper ladle portion 12 has a tapered external form, i.e., its horizontal sectional area becomes smaller from the top of the lower ladle portion 11 toward the upper portion. Note that, the lower ladle portion 11 and the upper ladle portion 12 may be formed in a united manner or formed independently and then connected using a connecting member.
  • the cross-sectional structure of the lower ladle portion 11 is such that an outer covering 14 formed of a steel plate is provided on the outside, and a lower portion lining layer 17 formed of a heat-insulating member 15 and a refractory member 16 and having a shape similar to the outer covering 14 is provided along the outer covering 14 .
  • the upper ladle portion 12 has the same cross-sectional structure as the same as that of the lower ladle portion 11 , wherein an outer covering 14 formed of a steel plate is provided on the outside, and an upper portion lining layer 18 formed of a heat-insulating member 15 and a refractory member 16 and having a shape similar to the outer covering 14 is formed on the inside of the outer covering 14 .
  • the innermost surface 18 a of the upper portion lining layer 18 is formed as an inclined plane wherein the opening area becomes smaller from the top of the innermost surface 17 a of the lower portion lining layer 17 toward the edge of the opening 13 .
  • This inclined plane is formed so as to have a fixed inclination angle from the upper end of the innermost surface 17 a of the lower portion lining layer 17 toward the edge of the opening 13 in the longitudinal sectional view of FIG. 1 .
  • insulating firebricks, ceramic fiber felt, mortar, etc. can be used as materials for the heat-insulating member 15 .
  • Refractory bricks, castable refractory, plastic refractory, etc. can be used as materials for the refractory member 16 .
  • One end 30 a of the molten metal discharging tube 30 is open to the inside of the ladle body 10 in the vicinity of the bottom surface, and the other end 30 b is open to the outside of the ladle body 10 .
  • the pressurizing member 31 projects obliquely upward from the ladle body 10 , and comprises a compressed air inlet 31 a .
  • a means for supplying compressed air (such as a compressor), which is not shown in the figure, is connected to the compressed air inlet 31 a . Teeming is conducted by applying pressure to the inside of the ladle body 10 using compressed air so that molten metal is discharged from the molten metal discharging tube 30 .
  • the inside the ladle body 10 also may be pressurized using a compressed inert gas instead of compressed air.
  • An openable and closable lid 32 is provided on top of the ladle body 10 so as to cover the opening 13 of the ladle body 10 .
  • the cross-sectional structure of the lid 32 is such that an outer covering 14 formed of a steel plate is provided on the outermost side, and a lid lining layer 19 comprising a heat-insulating member 15 and a refractory member 16 is provided inside the outer covering 14 .
  • a pair of feet 33 , 33 are provided on the bottom surface of the ladle body 10 in such a manner that one foot 33 is parallel to the other foot 33 .
  • a fork pocket 33 a into which the fork portion of a forklift can be inserted is formed in each foot 33 , so that molten metal ladle 1 can be transported by a forklift.
  • a method for cleaning and removing the scales, slage, etc., that adhere to the upper portion lining layer 18 and the lower portion lining layer 17 of the molten metal ladle 1 of the above-described structure is explained below.
  • the operator of the removal operation opens the lid 32 , and checks the adhesion condition of scales, slag, etc., to the upper portion lining layer 18 and the lower portion lining layer 17 , etc., from the opening 13 of the upper portion of the ladle body 10 .
  • scales, slag, etc., that adhere to the innermost surfaces 18 a , 17 a of the upper portion lining layer 18 and the lower portion lining layer 17 a are scratched off by inserting a scraper or like removing tool into the ladle body 10 from the opening 13 .
  • the innermost surface 18 a of the upper portion lining layer 18 in the upper ladle portion 12 is formed as an inclined plane wherein the opening area becomes smaller from the top end of the innermost surface 17 a of the lower portion lining layer 17 toward the edge of the opening 13 .
  • the operator who removes the scales, slag, etc. does not have to check the adhesion condition by inserting his or her head into the opening 13 during the removal operation. This allows the operator to reliably remove scales, slag, etc., from outside the opening 13 in a comfortable position while checking the adhesion/removal condition of all of surfaces 18 a , 17 a of the upper portion lining layer 18 and the lower portion lining layer 17 .
  • the operator can handle a scraper or like removing tool without interference from the edge of the opening 13 , and this simplifies the removal operation.
  • the innermost surface 18 a of the upper portion lining layer 18 in the upper ladle portion 12 is formed as an inclined plane wherein the opening area decreases from the top end of the innermost surface 17 a of the lower portion lining layer 17 toward the edge of the opening 13 , when molten metal is placed in the lower ladle portion 11 , a space is formed between the surface of the molten metal and the inner surface of the lid 32 . This effectively prevents adhesion of the molten metal to the inner surface of the lid 32 , even if the molten metal splashes in the ladle body 10 when transporting the molten metal ladle 1 or pouring the molten metal.
  • the innermost surface 18 a of the upper portion lining layer 18 which forms an inclined plane, has a fixed inclination angle from the top end of the innermost surface 17 a of the lower portion lining layer 17 toward the edge of the opening 13 as shown in the cross-sectional view of FIG. 1 ( b ), adhesion and removal of scales, slag, etc., to or from the innermost surface 18 a can be easily checked.
  • the operator can remove the scales, slag, etc., without drastically changing the holding position of a scraper or like removing tool, and therefore the removal operation can be conducted quickly.
  • the upper portion lining layer 18 is provided in such a manner that the innermost surface 18 a of the upper portion lining layer 18 forms an inclined plane wherein the opening area decreases from the top end of the innermost surface 17 a of the lower portion lining layer 17 toward the edge of the opening 13 , it is possible to effectively prevent dropping of the refractory member 16 , such as a refractory brick, that forms the upper portion lining layer 18 .
  • each refractory member 16 is supported by a refractory member 16 immediately below, the tensile load in the gravity direction generated in the lining surface of the refractory member 16 is reduced, and therefore dropping of the refractory member 16 can be effectively prevented.
  • the angle ⁇ between the inclined line of the innermost surface 18 a of the upper portion lining layer 18 and the line connecting the connecting portion 20 to the edge of the opening 13 be such that the scraper will not be caught by the edge of the opening 13 when the scales, slag, etc., that adhere to the innermost surface 18 a are removed using a straight scraper as shown in the cross-sectional view of FIG. 1( b ).
  • the inclination angle is preferably, for example, 5° to 30°.
  • the upper ladle portion 12 has a tapered external form, but the external form of the upper ladle portion 12 is not limited as long as the innermost surface 18 a of the upper portion lining layer 18 provided inside the upper ladle portion 12 is formed as an inclined plane wherein the opening area decreases from the top end of the lower portion lining layer 17 toward the edge of the opening 13 , and the external form may be tubular having a consistent outer diameter in the height direction.
  • a pressurizing-type molten metal ladle is employed as the molten metal ladle 1 , wherein teeming is conducted by pressurizing the inside of the ladle body 10 by sending compressed air, etc., therein so as to discharge the molten metal stored in the ladle body 10 to the outside.
  • a tilting molten metal ladle as shown in FIG. 2 by which molten metal can be discharged from the discharging port 51 by tilting the molten metal ladle.
  • the innermost surface 18 a of the upper portion lining layer 18 is formed as an inclined plane having a fixed inclination angle from the top end of the innermost surface 17 a of the lower portion lining layer 17 to the edge of the opening 13 as shown in the cross-sectional view of FIG. 1( b ).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Continuous Casting (AREA)
US11/665,837 2004-12-28 2005-10-14 Molten metal ladle Abandoned US20090065987A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2004379356A JP3903321B2 (ja) 2004-12-28 2004-12-28 溶融金属取鍋
JP2004-379356 2004-12-28
PCT/JP2005/018925 WO2006070522A1 (fr) 2004-12-28 2005-10-14 Poche de coulee pour metal fondu

Publications (1)

Publication Number Publication Date
US20090065987A1 true US20090065987A1 (en) 2009-03-12

Family

ID=36614648

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/665,837 Abandoned US20090065987A1 (en) 2004-12-28 2005-10-14 Molten metal ladle

Country Status (5)

Country Link
US (1) US20090065987A1 (fr)
EP (1) EP1832363A4 (fr)
JP (1) JP3903321B2 (fr)
CN (1) CN101065202A (fr)
WO (1) WO2006070522A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120240831A1 (en) * 2011-03-22 2012-09-27 Guilherme Martins Ferreira System and Process for the Combustion of Solid Fuels

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103418783A (zh) * 2012-05-18 2013-12-04 无锡蠡湖叶轮制造有限公司 重力铸造定量炉用咀
JP5907312B2 (ja) * 2014-01-23 2016-04-26 Ｊｆｅスチール株式会社 溶融金属容器のライニング構造体の製造方法
CN104959588B (zh) * 2015-07-24 2017-10-31 新沂市港发商贸有限公司 一种铝合金重力浇铸用带塞浇壶
CN105328176B (zh) * 2015-12-03 2017-07-14 重庆志成机械有限公司 一种可旋转调整的吹气装置
CN108907166A (zh) * 2018-09-07 2018-11-30 苏州诺瑞达新材料科技有限公司 带防护装置的长距离铝水包

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1535482A (en) * 1923-10-04 1925-04-28 Fred E Kling Ladle
US3277716A (en) * 1963-11-06 1966-10-11 Koppers Co Inc Hot metal ladle continuous temperature measuring device
US4118018A (en) * 1975-10-29 1978-10-03 Mannesmann Aktiengesellschaft Cover device for casting vessels, ladles or other metallurgical treatment containers
US6110414A (en) * 1997-02-06 2000-08-29 Mannesmann Ag Vessel for metallurgical purposes
US6368549B1 (en) * 1997-08-19 2002-04-09 Sms Demag Ag Metallurgical vessel

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51147510A (en) * 1975-06-13 1976-12-17 Nippon Steel Corp Method of measuring working surface profile of refractory lining vessels and of mending the surface
SU969453A1 (ru) * 1981-06-29 1982-10-30 Восточный научно-исследовательский и проектный институт огнеупорной промышленности Установка дл изготовлени монолитной футеровки металлургических емкостей
US4931090A (en) * 1989-08-23 1990-06-05 Zia Technology, Inc. Pneumatic steelmaking vessel and method of producing steel
JPH06190539A (ja) * 1992-12-22 1994-07-12 Mitsubishi Materials Corp 溶湯金属供給器具
JP3325256B2 (ja) * 2000-04-07 2002-09-17 株式会社大紀アルミニウム工業所 取鍋搬送装置及びそれを設置した取鍋運搬車両
JP2003205361A (ja) * 2002-01-11 2003-07-22 Tamashima Keikinzoku Kogyo Kk 除滓作業機

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1535482A (en) * 1923-10-04 1925-04-28 Fred E Kling Ladle
US3277716A (en) * 1963-11-06 1966-10-11 Koppers Co Inc Hot metal ladle continuous temperature measuring device
US4118018A (en) * 1975-10-29 1978-10-03 Mannesmann Aktiengesellschaft Cover device for casting vessels, ladles or other metallurgical treatment containers
US6110414A (en) * 1997-02-06 2000-08-29 Mannesmann Ag Vessel for metallurgical purposes
US6368549B1 (en) * 1997-08-19 2002-04-09 Sms Demag Ag Metallurgical vessel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120240831A1 (en) * 2011-03-22 2012-09-27 Guilherme Martins Ferreira System and Process for the Combustion of Solid Fuels

Also Published As

Publication number Publication date
WO2006070522A1 (fr) 2006-07-06
CN101065202A (zh) 2007-10-31
EP1832363A1 (fr) 2007-09-12
JP2006181615A (ja) 2006-07-13
EP1832363A4 (fr) 2009-01-07
JP3903321B2 (ja) 2007-04-11

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Legal Events

Date Code Title Description
AS Assignment

Owner name: NIPPON CRUCIBLE CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KAWAI, KIYOHUMI;MUKAI, KATSUYOSHI;MATSUMOTO, TOSHIYUKI;REEL/FRAME:019231/0141

Effective date: 20070313

Owner name: DAIKI ALUMINIUM INDUSTRY CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KAWAI, KIYOHUMI;MUKAI, KATSUYOSHI;MATSUMOTO, TOSHIYUKI;REEL/FRAME:019231/0141

Effective date: 20070313

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION