US3899088A - Furnace charging apparatus - Google Patents

Furnace charging apparatus Download PDF

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Publication number
US3899088A
US3899088A US437809A US43780974A US3899088A US 3899088 A US3899088 A US 3899088A US 437809 A US437809 A US 437809A US 43780974 A US43780974 A US 43780974A US 3899088 A US3899088 A US 3899088A
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US
United States
Prior art keywords
furnace
cylinders
chute
cylinder
respect
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
US437809A
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English (en)
Inventor
Shoji Furuya
Masaoki Takahashi
Masatoshi Matsushima
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.)
IHI Corp
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IHI Corp
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Filing date
Publication date
Application filed by IHI Corp filed Critical IHI Corp
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Publication of US3899088A publication Critical patent/US3899088A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/18—Bell-and-hopper arrangements
    • C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden

Definitions

  • ABSTRACT A raw material distribution chute is rotated when inner and outer cylinders are rotated in unison, and is tilted when the inner or outer cylinder is vertically moved with respect to the outer or inner cylinder.
  • the rotation and tilting of the distribution chute may be made simultaneously or individually so that the pattern of raw material distribution may be varied over a wide range.
  • the present invention relates to a mechanism for driving a device for charging raw materials into a blast furnace.
  • the charging position in the furnace must be freely selected in order to accomplish the highly efficient furnace operation depending upon the conditions of the furnace and the qualities of raw materials.
  • the mechanism must withstand the high temperature furnace gases containing a large amount of dusts (the temperature being 200 300C under the normal conditions and 700 1,000C in case of slip and blast.
  • the chute Since the chute is subjected to abrasive wear, it must have a simple construction so as to be replaced and repaired in a simple manner.
  • the chute driving mechanism which is one of the most important factors affecting the furnace operation, also must have a simple construction so as to permit the simple inspection and maintenance.
  • a further object of the present invention is to ensure the satisfactory operation of the driving mechanism even without using nitrogen gas.
  • a further object of the present invention is to provide a driving mechanism of the type described whose inspection and maintenance may be accomplished during the furnace operation so that the sudden interruption of blast may be prevented, thereby preventing the decrease in iron production.
  • FIG. 1 is a schematic view of a conventional device incorporating a conventional driving mechanism for charging raw materials into a blast furnace from its top;
  • FIG. 2 is a fragmentary sectional view of the conventional driving mechanism
  • FIG. 3 is a sectional view of a first embodiment of a driving mechanism in accordance with the present invention.
  • FIG. 4 is a sectional view of a second embodiment of the present invention.
  • a seal hopper b with seal valves a and a is joined to a charging hopper c in such a way that raw materials may be charged into 5 the seal hopper b when the seal valve a is opened and the raw materials charged into the hopper b are charged into the furnace through a fixed charging opening d when the seal valve a at the lower end of the hopper b is opened.
  • a distribution chute e is disposed within the furnace in such a manner that the raw materials may be distributed into the furnace.
  • FIG. 2 The mechanism for driving the chute e is illustrated in FIG. 2.
  • an inner cylinder g having a gear h fixed at the top thereof and an outer cylinder 1' having a gear j fixed at the top thereof.
  • a push rod 1 housed within a guide cylinder m which in turn is disposed between the inner and outer cylinders g and i, has a roller n fitted into a groove k of the outer cylinder 1'.
  • the chute e which is pivoted with pins 0 to the lower end of the fixed charging opening d is connected to the lower end of the push rod 1.
  • Gears p and q in mesh with the gears h and j, respectively, are drivingly coupled to motors r and s, respectively, so that the inner and outer cylinders g and i may be rotated simultaneously or individually with respect to each other, thereby rotating and swinging or tilting the distribution chute e.
  • an inner cylinder 1 carried by a ring gear 2 coaxially thereof, and lined with antiabrasive wear material 3, and an outer cylinder 4 with a flange 5 are disposed in a top 16 of a blast furnace coaxially thereof.
  • the ring gear 2 is supported by a rotary support device 6 which in turn is supported on a stationary member such as a deck on the furnace top.
  • the ring gear 2 is drivingly coupled through an idle gear 8 to a motor 7 so that the inner cylinder 1 may be rotated.
  • the flange 5 of the outer cylinder 4 is supported by a rotary support device 10 which in turn is supported by a plurality of power cylinders 9, so that the outer cylinder 4 may be vertically moved with respect to the inner cylinder 1 by the cylinders 9.
  • Vertical guides l 1 extended from the outer side wall of the inner cylinder 1 are fitted into corresponding guide grooves 12 formed in the inner wall of the outer cylinder 4 so that the outer cylinder 4 may be permitted to slide vertically with respect to the inner cylinder 1 but is prevented by freely rotating with respect to the inner cylinder 1.
  • a distribution chute 13 which is pivoted to the lower end of the inner cylinder 1 with pivot pins 14 has its inner walls lined with abrasive wear resulting material and its outer walls lined with refractory material.
  • the distribution chute 13 is also connected through links 15 to the lower end of the outer cylinder 4. Therefore, the distribution chute 13 is rotated about the axis of the furnace when the inner and outer cylinders 1 and 4 are rotated in unison by the motor 7, and when the outer cylinder 4 is vertically moved with respect to the inner cylinder 1, the distribution chute 13 may swing or tilt about the pivot pins 14 so that the angle of the outlet of the chute 13 with respect to the axis of the furnace may be suitably varied.
  • the raw materials may be directly distributed in the blast furnace by the distribution chute 13.
  • Sealing means 18 which is adapted to be cooled by cooling means 17 is interposed between the outer cylinder 4 and the top 16 of the furnace, and seal means 19 is interposed between the inner cylinder 1 and the rotary support device 10 and between the outer cylinder 4 and the rotary support device 10. Seal means is also interposed between the upper end portion of the inner cylinder 1 and a raw material charging chute 21. Therefore, the complete gas-tightness is provided. It should be noted that the inner and outer cylinders 1 and 4 are driven by the motor 7 which is located outside of the furnace.
  • the power cylinders 9 are actuated to drive the outer cylinder so as to control the angle of inclination of the distribution chute 13.
  • the motor 7 is driven to rotate the inner and outer cylinders 1 and 4 in unison so that the distribution chute 13 is rotated about the axis of the furnace. Therefore, the raw materials charged into the inner cylinder 1 from the chute 21 may be distributed along a circle within the furnace. The diameter of this circle may be varied by controlling the angle of the distribution chute 13 and hence the position of the outer cylinder 4 so that the raw materials may be distributed from the axis of the furnace to the furnace wall in any desired manner.
  • the position of the outer cylinder 4 with respect to the inner cylinder 1 and hence the angle of the distribution chute 13 with respect to the axis of the furnace may be varied independently of the rotation of the inner and outer cylinders l and 4. Therefore, when the angle of the distribution chute 13 is varied while the rotation of the inner and outer cylinders 1 and 4 is stopped, the raw materials may be distributed in the radial direction of the furnace or the spot charging of the raw materials may become possible. When the distribution chute 13 is retracted to the position indicated by the two-dot chain lines in FIG. 3, the raw materials may be charged dirctly from the inner cylinder 1 into the furnace. Furthermore, when the motor 7 and the power cylinder 9 are suitably controlled, the pattern of raw material distribution in the furnace may be controlled continuously or from one spot to another.
  • the replacement or repair of the distribution chute 13 When the replacement or repair of the distribution chute 13 is required, it may be directly removed out of the opening through the top 16, but it is preferable to remove the seal means 18 and to release the support devices 6 and 10 so that the outer and inner cylinders 1 and 4 and the distribution chute 13 may be lifted in unison from the top 16. Thus, the replacement or repair of the distribution chute 13 may be accomplished outside of the furnace.
  • the second embodiment of the present invention will be described.
  • the arrangement of the second embodiment is such that the flange 5 of the inner cylinder 1 is supported by the rotary support device 10 which in turn is supported through the power cylinders 9 on a deck 22 on the top of the furnace, and the outer cylinder 4 is supported by the ring gear 2 which in turn is supported by the rotary support device 6 disposed on the deck 22.
  • the motor 7 is drivingly coupled through a pinion 8 to the ring gear 2 so that the outer and inner cylinders 4 and 1 may be rotated in unison.
  • the vertical guides 11 of the inner cylinder 1 are fitted into the corresponding guide grooves 12 of the outer cylinder 4 so that the inner cylinder 1 may be rotated in unison with the outer cylinder 4 and may be permitted to vertically move with respect to the outer cylinder 4.
  • the distribution chute 13 whose inner and outer walls are lined with abrasive wear resisting material 23 and refractory material 24, respectively, is pivoted to the lower end of the outer cylinder 4 with the pivot pins 14 and is operatively coupled through the links 15 to the inner cylinder 1. Therefore, the distribution chute 13 may be rotated in unison with the inner and outer cylinders 1 and 4 and may swing about the pivot pins 14 when the inner cylinder 1 is vertically moved with respect to the outer cylinder 4.
  • Seal means are interposed between the outer cylinder 4 and the furnace top 16, between the inner and outer cylinders 1 and 4, and between the inner cylinder 1 and the charging chute 21 so that the complete gas-tightness may be provided.
  • the inner and outer cylinders 1 and 4 and the distribution chute 13 may be driven from the motor 7 and the power cylinders 9 disposed outside of the furnace.
  • the second embodiment may also distribute the raw materials in the furnace in a manner substantially similar to that described with reference to the first embodiment.
  • the motor and power cylinders for driving the distribution chute are all installed outside of the furnace so that they may be completely protected from the high temperature furnace gases and may be inspected and repaired at any time even in case of the furnace operation.
  • the rotation and swing or tilting of the distribution chute may be combined in various manners so that the pattern of raw material distribution in the furnace may be varied freely.
  • Seal means interposed between the furnace and the device for charging the raw materials is rotatable and slidable so that the expansion of the furnace in the vertical direction may be absorbed without using the expansion joints.
  • Mechanism for charging a furnace with raw materials through a top opening comprising a distribution chute positioned in the upper portion of the furnace adjacent the opening, means for mounting said chute for rotation about the vertical axis of the furnace and for independent angular adjustment with respect to said axis, a pair of concentrically arranged cylinders positioned exteriorally of said furnace and aligned with said vertical axis, said cylinders being connected for rotation together and slideable movement with respect to each other, first power means for rotating said cylinders, second power means for slideably moving one cylinder with respect to the other, means connecting one of the cylinders with the chute to rotate the latter upon operation of said first power means, and means connecting the other cylinder with the chute for angular adjustment of the latter upon operation of said second power means.
  • Mechanism as set forth in claim 1 which includes interengaging vertically arranged rails and grooves formed on said cylinders to enable slideable movement of one with respect to the other.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blast Furnaces (AREA)
US437809A 1973-01-31 1974-01-30 Furnace charging apparatus Expired - Lifetime US3899088A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP48012649A JPS5111014B2 (cs) 1973-01-31 1973-01-31

Publications (1)

Publication Number Publication Date
US3899088A true US3899088A (en) 1975-08-12

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ID=11811202

Family Applications (1)

Application Number Title Priority Date Filing Date
US437809A Expired - Lifetime US3899088A (en) 1973-01-31 1974-01-30 Furnace charging apparatus

Country Status (6)

Country Link
US (1) US3899088A (cs)
JP (1) JPS5111014B2 (cs)
AU (1) AU472393B2 (cs)
DE (1) DE2404647C3 (cs)
FR (1) FR2216350B1 (cs)
GB (1) GB1409692A (cs)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4042130A (en) * 1974-09-20 1977-08-16 S.A. Des Anciens Etablissements Paul Wurth Charging device for shaft furnace
US4151047A (en) * 1976-08-13 1979-04-24 S.A. Des Anciens Etablissements Paul Wurth Feed installation for apparatus for extracting hydrocarbons from bituminous schists
US4243351A (en) * 1977-06-06 1981-01-06 Paul Wurth S.A. Method of and apparatus for charging a furnace
US4273492A (en) * 1978-08-16 1981-06-16 Paul Wurth, S.A. Charging device for shaft furnaces
FR2476289A1 (fr) * 1980-02-15 1981-08-21 Wurth Paul Sa Dispositif de chargement pour fours a cuve
EP0116142A1 (fr) * 1982-12-10 1984-08-22 Paul Wurth S.A. Dispositif de refroidissement d'une installation de chargement d'un four à cuve
US5022806A (en) * 1988-09-22 1991-06-11 Paul Wurth S.A. Apparatus for charging a shaft furnace
US5513835A (en) * 1993-09-01 1996-05-07 Paul Wurth S.A. Distributing chute for a furnace
WO1997037047A1 (en) * 1996-03-29 1997-10-09 Paul Wurth S.A. Charging device for a blast furnace
AU738358B2 (en) * 1997-03-07 2001-09-13 Sms Schloemann-Siemag Aktiengesellschaft Top closing device for shaft furnaces
US6481946B1 (en) * 1998-10-06 2002-11-19 Paul Wurth S.A. Device for dispensing bulk materials
US6916146B1 (en) * 1999-09-03 2005-07-12 Paul Wurth S.A. Device for distributing bulk materials with rotary chute having a variable angle of inclination
WO2009066005A1 (en) * 2007-11-21 2009-05-28 Outotec Oyj Distributor device
US20130175137A1 (en) * 2011-03-01 2013-07-11 Gary W. Wilson Connection For A Grain Bin Allowing Rotation Of The Supply/Removal Chute
US20140131162A1 (en) * 2011-06-21 2014-05-15 Paul Wurth S.A. Distribution chute for a charging device
CN112609033A (zh) * 2020-12-24 2021-04-06 中钢集团西安重机有限公司 一种用于高炉的水冷式布料器
CN112626299A (zh) * 2020-12-24 2021-04-09 中钢集团西安重机有限公司 一种布料器的冷却方法

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU84520A1 (fr) * 1982-12-10 1984-10-22 Wurth Paul Sa Dispositif de refroidissement d'une installation de chargement d'un four a cuve
LU88494A1 (fr) * 1994-06-08 1996-02-01 Wurth Paul Sa Dispositif de chargement à goulotte rotative pour un four à cuve
LU90295B1 (fr) 1998-10-06 2000-04-07 Wurth Paul Sa Dispositif de répartition de matières en vrac
CZ299041B6 (cs) * 1998-12-30 2008-04-09 Paul Wurth S.A. Kychtový uzáver pro šachtové pece
DE10333569A1 (de) * 2003-07-23 2005-02-17 Z & J Technologies Gmbh Einrichtung zur Verteilung von Schüttgut in wenigstens zwei oberhalb der Gicht eines Hochofens angeordnete Bunker

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3693812A (en) * 1969-07-31 1972-09-26 Wurth Anciens Ets Paul Furnace charging apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB271347A (en) * 1926-12-07 1927-05-26 Joseph Lambot Improvements in feeding arrangements for gas producers, shaft furnaces and the like
DE533822C (de) * 1930-04-12 1931-09-18 Fried Krupp Grusonwerk Akt Ges Verfahren und Vorrichtung zur Steuerung von Beschickungsvorrichtungen fuer Schachtoefen
DE671726C (de) * 1936-02-11 1939-02-13 Mitteldeutsche Stahlwerke Akt Begichtungseinrichtung, insbesondere fuer Hoch- und Giessereischachtoefen
DE1902500A1 (de) * 1969-01-18 1970-09-17 Vogel Dr Ing Rudolf Verteilvorrichtung fuer den Gichtverschluss von Schachtoefen,insbesondere Druckhochoefen
DE2104116A1 (en) * 1971-01-29 1972-08-10 Demag Ag, 4100 Duisburg Blast-furnace burden distributor - allows dumping at any point across furnace
LU66273A1 (cs) * 1972-10-11 1973-01-23

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3693812A (en) * 1969-07-31 1972-09-26 Wurth Anciens Ets Paul Furnace charging apparatus

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4042130A (en) * 1974-09-20 1977-08-16 S.A. Des Anciens Etablissements Paul Wurth Charging device for shaft furnace
US4151047A (en) * 1976-08-13 1979-04-24 S.A. Des Anciens Etablissements Paul Wurth Feed installation for apparatus for extracting hydrocarbons from bituminous schists
US4243351A (en) * 1977-06-06 1981-01-06 Paul Wurth S.A. Method of and apparatus for charging a furnace
US4273492A (en) * 1978-08-16 1981-06-16 Paul Wurth, S.A. Charging device for shaft furnaces
FR2476289A1 (fr) * 1980-02-15 1981-08-21 Wurth Paul Sa Dispositif de chargement pour fours a cuve
US4368813A (en) * 1980-02-15 1983-01-18 Paul Wurth S.A. Distribution chute control apparatus and method
EP0116142A1 (fr) * 1982-12-10 1984-08-22 Paul Wurth S.A. Dispositif de refroidissement d'une installation de chargement d'un four à cuve
US5022806A (en) * 1988-09-22 1991-06-11 Paul Wurth S.A. Apparatus for charging a shaft furnace
DE4430265B4 (de) * 1993-09-01 2004-05-06 Paul Wurth S.A. Verteilerschurre zum Einbau in einen Ofen
US5513835A (en) * 1993-09-01 1996-05-07 Paul Wurth S.A. Distributing chute for a furnace
WO1997037047A1 (en) * 1996-03-29 1997-10-09 Paul Wurth S.A. Charging device for a blast furnace
US6004090A (en) * 1996-03-29 1999-12-21 Paul Wurth S.A. Charging device for a blast furnace
CN1067106C (zh) * 1996-03-29 2001-06-13 保尔·沃特公司 高炉用装料装置
AU738358B2 (en) * 1997-03-07 2001-09-13 Sms Schloemann-Siemag Aktiengesellschaft Top closing device for shaft furnaces
US6481946B1 (en) * 1998-10-06 2002-11-19 Paul Wurth S.A. Device for dispensing bulk materials
US6916146B1 (en) * 1999-09-03 2005-07-12 Paul Wurth S.A. Device for distributing bulk materials with rotary chute having a variable angle of inclination
US20100290866A1 (en) * 2007-11-21 2010-11-18 Outotec Oyi Distributor device
WO2009066005A1 (en) * 2007-11-21 2009-05-28 Outotec Oyj Distributor device
CN101868684B (zh) * 2007-11-21 2012-08-22 奥图泰有限公司 分配器装置
EA016935B1 (ru) * 2007-11-21 2012-08-30 Ототек Оюй Распределительное устройство
US8506230B2 (en) 2007-11-21 2013-08-13 Outotec Oyj Distributor device
US20130175137A1 (en) * 2011-03-01 2013-07-11 Gary W. Wilson Connection For A Grain Bin Allowing Rotation Of The Supply/Removal Chute
US8651258B2 (en) * 2011-03-01 2014-02-18 Wch Industries, Llc Connection for a grain bin allowing rotation of the supply/removal chute
US20140131162A1 (en) * 2011-06-21 2014-05-15 Paul Wurth S.A. Distribution chute for a charging device
US9073693B2 (en) * 2011-06-21 2015-07-07 Paul Wurth S.A. Distribution chute for a charging device
CN112609033A (zh) * 2020-12-24 2021-04-06 中钢集团西安重机有限公司 一种用于高炉的水冷式布料器
CN112626299A (zh) * 2020-12-24 2021-04-09 中钢集团西安重机有限公司 一种布料器的冷却方法
CN112626299B (zh) * 2020-12-24 2022-04-01 中钢集团西安重机有限公司 一种布料器的冷却方法

Also Published As

Publication number Publication date
FR2216350B1 (cs) 1976-11-26
DE2404647A1 (de) 1974-08-01
FR2216350A1 (cs) 1974-08-30
JPS4999902A (cs) 1974-09-20
DE2404647C3 (de) 1983-12-22
AU472393B2 (en) 1976-05-20
JPS5111014B2 (cs) 1976-04-08
AU6478574A (en) 1975-07-24
GB1409692A (en) 1975-10-15
DE2404647B2 (de) 1976-06-10

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