US3663411A - Mobile furnace manipulator - Google Patents

Mobile furnace manipulator Download PDF

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Publication number
US3663411A
US3663411A US83045A US3663411DA US3663411A US 3663411 A US3663411 A US 3663411A US 83045 A US83045 A US 83045A US 3663411D A US3663411D A US 3663411DA US 3663411 A US3663411 A US 3663411A
Authority
US
United States
Prior art keywords
alumina
cell
chisel
manipulator
crust
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
US83045A
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English (en)
Inventor
Kurt Springer
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.)
Alcan Holdings Switzerland AG
Original Assignee
Alusuisse Holdings AG
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 Alusuisse Holdings AG filed Critical Alusuisse Holdings AG
Application granted granted Critical
Publication of US3663411A publication Critical patent/US3663411A/en
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/14—Devices for feeding or crust breaking
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • a travelling furnace manipulator for breaking up the slag crust in an aluminum melt electrolysis cell having a cell rim, an anode spaced across the cell from the rim, and a device for feeding alumina to the cell, a chisel device for breaking the crust, first and second scrapping devices arranged respectively in front of and behind the chisel device when looking in the direction of movement of the manipulator, and an arrangement for moving the first scraping device in front of the chisel device so as to pull an alumina cover on the slag in the cell toward the cell rim, and another arrangement for moving the second scraping device behind the chisel device so as to spread the alumina cover in the direction toward the anode.
  • the present invention relates to means for breaking up the slag or dross crust covering the molten electrolyte in aluminum melt electrolysis cells.
  • the breaking up of such crusts is effected no longer in a purely manual manner, but by means of manually operable travelling compressed air operable crust breakers. More recently such crust breakers are equipped with a device for feeding the alumina (or oXyde of aluminum) into the cell and represent complete furnace operating apparatus which shall be called furnace manipulators in the ensuing description and claims.
  • Mechanically operated travelling crust breakers are known in various forms. Some are mounted on dirigible carriages, others are mounted on movable gantries above the cells, such as one-legged gantry cranes, gantry cranes or travelling cranes.
  • the alumina or oxyde of aluminum normally resting on the slag crust is usually not evenly distributed and upon breaking of the crust does not get into the electrolyte in optimum amounts, when presently known furnace manipulators are being used. If the amount is too large the bath silts up or becomes muddy, whereas if the amount is too small the yield per unit of electricity deteriorates.
  • the furnace manipulator according to the present invention is characterized primarily in that one alumina scratching tool each is provided in front of and behind the crust breaker chisel, when looking in the direction of movement of the manipulator.
  • the alumina cover is, prior to the crust breaker chisel breaking in, pulled back toward the rim of the cell by one alumina scratching tool and is after the penetration of the chisel distributed again over the bath by the other scratching tool. In this way a very uniform alumina cover is achieved and the profitability of the electrolysis operation is considerably increased.
  • FIG. 1 shows the furnace manipulator according to the present invention in front view, with the cell to be serviced in cross section;
  • FIG. 2 is a perspective view of the alumina scratching tool or blade
  • FIGS. 3 to 7 show the scratching tool or blade in various positions, and more specifically: in FIG. 3 in rest position; in FIG. 4 lowered into the alumina cover and following the removal of the alumina from the surface of the slag crust to be broken up; in FIG. 5 lifted in the vicinity of the cell rim; in FIG. 6 lifted in the vicinity of the anode; and in FIG. 7 lowered into the alumina cover, ready to remove the alumina.
  • the furnace manipulator shown therein is mounted on a semi-portal or one-legged gantry crane 10 which is on one hand guided and propelled on a crane rail 11 by two carriages 12 and on the other hand is equipped with a non-driven rubber tire carriage 13 running on the floor 100.
  • the two carriages 12 are driven by means of a drive motor 14 via a transmission 15 and 16.
  • Guide rollers are indicated by the reference numeral 17.
  • FIG. 1 also shows a melt electrolysis cell 18, diagrammatically and in cross section. A detailed showing is not necessary since such cells are very well knownin the art.
  • the drawing is merely intended to illustrate the general arrangement of the crust breaker and of the alumina scratching blades.
  • the pre-baked anodes 19 are connected to a conductor 22 by means of anode rods 20 and an anode lock 21.
  • the cathode connection is effected by the cathode bars 23.
  • the slag crust is designated with the reference numeral 27 and consists of solidified electrolyte and non-dissolved alumina; reference numeral 28 represents the alumina cover.
  • the furnace manipulator illustrated in the drawing is intended to service two parallel rows of electrolysis cells.
  • a compressor 39 is mounted on the crane bridge 38, to-
  • an alumina bin 42 with an inlet 43 and an exhaust filter 44.
  • the manipulator comprises a crust breaker chisel 75 and one alumina pipe 54 each in front of and behind the chisel.
  • the alumina can be supplied the electrolyte 24 in both driving directions.
  • the control of the automatic operation of the furnace manipulator, as well as the supply and removal of the alumina, and of the mechanical operating devices is effected by conventional electronic apparatus.
  • Each of the two scrapers 113 comprises a scratching blade 114 (see FIG. 2), which in the example shown is pivotally supported on a tilting shaft 115 on the free end of a scratching arm 116.
  • the blade is normally held in operating or working position by return springs 117.
  • the scraper blade can resiliently tilt toward the anode or cell rim respectively.
  • Cotter pins 118 prevent the shaft 115 from slipping olf.
  • Arm 116 is being tilted into the working or rest position by the pneumatic arresting cylinders 119, with piston 120 and piston rod 121, by means of a linkage 122.
  • the pushing movement of the scraper arm 116 is effected by the cylinder 123 with piston 124 and piston rod 125.
  • the arrangement is mounted on a see-saw or sweep 126 and journalled on a shaft 127. Lifting of the scraper from the alumina layer and dipping of the same into the bath again is accomplished by a tilting movement of see-saw 126 controlled by the oscillation cylinder 128 with piston 129 and piston rod 130.
  • the scratching tool is shown after having pulled back the alumina layer.
  • the scraper blade is located at point 131 of the dot-dash path 132.
  • the scraper blade 114 is lifted from the alumina layer.
  • the blade is moving from point 131 in the vicinity of the cell rim to point 133 of path 132. This movement is executed by oscillation cylinder 128.
  • the scraper blade has carried out the movement from point 133 across the alumina layer to point 134 in the vicinity of the anode.
  • the horizontal movement is carried out by cylinder 123.
  • FIG. 7 shows the scraper blade 114 when it has been dipped into the alumina cover in the vicinity of the anode. It has been moved from point 134 to point 135. The vertical movement of the scraper blade 114 is effected by oscillation cylinder 128. Finally, the movement of blade 114 from point 135 to point 131 brings about removal of the alumina layer toward the cell rim.
  • FIGS. 3 to 7 described above illustrate the operation of the scraping blade 113 in front of the chisel means it is to be understood that the scraping blade 113 behind the chisel means is the same, but wroks in reverse to spread the alumina cover from the cell rim towards the anode.
  • the alumina fed to the cell is rather cold and will be intermixed with the warm alumina already present in the bath by means of the scrapers described above, thus resulting in an improved operation of the furnace.
  • a travelling furance manipulator of the type described, for breaking up the slag crust in an aluminum melt electrolysis cell having a cell rim, anode means spaced across said cell from said rim, and means for feeding alumina to said cell comprising: chisel means for breaking said crust, first and second scraping means arranged respectively in front of and behind said chisel means when looking in the direction of movement of said manipulator, and means for moving said first scraping means in front of said chisel means so as to pull an alumina cover on the slag in said cell toward said cell rim, and means for moving said second scraping means behind said chisel means so as to spread the alumina cover in the direction toward said anode means.
  • each scraping means comprises a scraping blade, a shaft rotatably supporting said blade, arm means having its free end connected to said shaft, and spring means connected to said scraping blade for maintaining the same in scraping position.
  • a travelling furnace manipulator which comprises compressed air operable piston and piston rod means connected to said arm means for moving said scraping blade of the respective scraping means in front of and behind said chisel means, for pulling and sperading the alumina cover respectively.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)
US83045A 1969-10-24 1970-10-22 Mobile furnace manipulator Expired - Lifetime US3663411A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1587869A CH520778A (de) 1969-10-24 1969-10-24 Fahrbarer Ofenmanipulator

Publications (1)

Publication Number Publication Date
US3663411A true US3663411A (en) 1972-05-16

Family

ID=4412723

Family Applications (1)

Application Number Title Priority Date Filing Date
US83045A Expired - Lifetime US3663411A (en) 1969-10-24 1970-10-22 Mobile furnace manipulator

Country Status (12)

Country Link
US (1) US3663411A (nl)
JP (1) JPS4946683B1 (nl)
AT (1) AT299564B (nl)
BE (1) BE757943A (nl)
CH (1) CH520778A (nl)
DE (1) DE2052528C3 (nl)
FR (1) FR2065513B1 (nl)
GB (1) GB1262068A (nl)
NL (1) NL148955B (nl)
NO (1) NO123365B (nl)
YU (1) YU35382B (nl)
ZA (1) ZA707171B (nl)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5138211A (en) * 1974-09-30 1976-03-30 Mitsubishi Chem Ind Aruminiumudenkaiso no aruminakyokyusochi
US4119505A (en) * 1976-05-04 1978-10-10 Aluminium Pechiney Process and device for cleaning the butts of worn anodes from an igneous electrolysis cell
US4172018A (en) * 1977-06-28 1979-10-23 Swiss Aluminium Ltd. Process and device for the production of aluminum
US4416489A (en) * 1979-09-10 1983-11-22 Swiss Aluminium Ltd. Chisel for a crust breaking facility
US4510033A (en) * 1984-06-18 1985-04-09 Aluminum Company Of America Frozen electrolyte bath removal apparatus
EP0298198A1 (en) * 1987-07-09 1989-01-11 TECHMO Car S.p.A. Equipment for the mechanized replacement of the anodes in the electrolytic cells for aluminum production
US5435897A (en) * 1993-02-25 1995-07-25 Techmo Car S.P.A. Automatized equipment for the replacement of the anodes in the electrolytic cells for aluminium production
EP1443128A1 (fr) * 2003-01-31 2004-08-04 E.C.L. Machine de service de cellules d'électrolyse pour la production d'aluminium
US20090308721A1 (en) * 2008-06-17 2009-12-17 Mac Valves, Inc. Pneumatic System Electrical Contact Device
US20110008995A1 (en) * 2008-06-17 2011-01-13 Mac Valves, Inc. Pneumatic System Electrical Contact Device
CN102367579A (zh) * 2011-09-19 2012-03-07 大连维乐液压制造有限公司 电解铝打壳气缸反馈阀
CN102534679A (zh) * 2010-12-17 2012-07-04 贵阳铝镁设计研究院有限公司 一种准连续下料式氧化铝电解槽的打壳下料方法
CN102616665A (zh) * 2011-01-27 2012-08-01 中国有色（沈阳）冶金机械有限公司 铝电解多功能起重机的下料系统
CN110168143A (zh) * 2017-06-15 2019-08-23 俄铝工程技术中心有限责任公司 通过分离等离子体切割进行电解质结壳破裂的方法和装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3125096C2 (de) * 1981-06-15 1985-10-17 Schweizerische Aluminium Ag, Chippis Vorrichtung und Verfahren zum portionenweisen Zuführen von Schüttgut
CN106956788B (zh) * 2017-04-28 2023-07-14 青岛海科佳智能科技股份有限公司 称量机细称机械手自动供料装置

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5138211A (en) * 1974-09-30 1976-03-30 Mitsubishi Chem Ind Aruminiumudenkaiso no aruminakyokyusochi
US4119505A (en) * 1976-05-04 1978-10-10 Aluminium Pechiney Process and device for cleaning the butts of worn anodes from an igneous electrolysis cell
US4172018A (en) * 1977-06-28 1979-10-23 Swiss Aluminium Ltd. Process and device for the production of aluminum
US4416489A (en) * 1979-09-10 1983-11-22 Swiss Aluminium Ltd. Chisel for a crust breaking facility
US4510033A (en) * 1984-06-18 1985-04-09 Aluminum Company Of America Frozen electrolyte bath removal apparatus
EP0298198A1 (en) * 1987-07-09 1989-01-11 TECHMO Car S.p.A. Equipment for the mechanized replacement of the anodes in the electrolytic cells for aluminum production
US5435897A (en) * 1993-02-25 1995-07-25 Techmo Car S.P.A. Automatized equipment for the replacement of the anodes in the electrolytic cells for aluminium production
US20060060469A1 (en) * 2003-01-31 2006-03-23 Patrick Delescluse Serving machine for electrolysis cells for producing aluminium
WO2004070086A2 (fr) * 2003-01-31 2004-08-19 E.C.L. Machine de service de cellules d'electrolyse pour la production d'aluminium
WO2004070086A3 (fr) * 2003-01-31 2004-11-18 Ecl Machine de service de cellules d'electrolyse pour la production d'aluminium
EP1443128A1 (fr) * 2003-01-31 2004-08-04 E.C.L. Machine de service de cellules d'électrolyse pour la production d'aluminium
CN100485094C (zh) * 2003-01-31 2009-05-06 E.C.L.公司 用于生产铝的电解池的操作器
US7915550B2 (en) 2008-06-17 2011-03-29 Mac Valves, Inc. Pneumatic system electrical contact device
US20110008995A1 (en) * 2008-06-17 2011-01-13 Mac Valves, Inc. Pneumatic System Electrical Contact Device
US20090308721A1 (en) * 2008-06-17 2009-12-17 Mac Valves, Inc. Pneumatic System Electrical Contact Device
US8367953B2 (en) 2008-06-17 2013-02-05 Mac Valves, Inc. Pneumatic system electrical contact device
CN102534679A (zh) * 2010-12-17 2012-07-04 贵阳铝镁设计研究院有限公司 一种准连续下料式氧化铝电解槽的打壳下料方法
CN102616665A (zh) * 2011-01-27 2012-08-01 中国有色（沈阳）冶金机械有限公司 铝电解多功能起重机的下料系统
CN102616665B (zh) * 2011-01-27 2014-03-19 中国有色（沈阳）冶金机械有限公司 铝电解多功能起重机的下料系统
CN102367579A (zh) * 2011-09-19 2012-03-07 大连维乐液压制造有限公司 电解铝打壳气缸反馈阀
CN110168143A (zh) * 2017-06-15 2019-08-23 俄铝工程技术中心有限责任公司 通过分离等离子体切割进行电解质结壳破裂的方法和装置
EP3553206A4 (en) * 2017-06-15 2020-04-29 Obshchestvo S Ogranichennoy Otvetstvennost'yu "Obedinennaya Kompaniya Rusal Inzhenerno-Tekhnologicheskiy Tsentr" METHOD AND DEVICE FOR DESTRUCTION OF ELECTROLYTE CRUST BY PLASMA SEPARATION CUT

Also Published As

Publication number Publication date
AT299564B (de) 1972-06-26
NL7015291A (nl) 1971-04-27
FR2065513B1 (nl) 1975-02-21
YU35382B (en) 1980-12-31
DE2052528B2 (de) 1974-02-07
FR2065513A1 (nl) 1971-07-30
JPS4946683B1 (nl) 1974-12-11
BE757943A (fr) 1971-04-01
CH520778A (de) 1972-03-31
ZA707171B (en) 1971-07-28
DE2052528A1 (de) 1971-05-06
NL148955B (nl) 1976-03-15
GB1262068A (en) 1972-02-02
DE2052528C3 (de) 1974-08-29
NO123365B (nl) 1971-11-01

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