US3664946A - Crust breaker for aluminum fusion electrolysis cells - Google Patents

Crust breaker for aluminum fusion electrolysis cells Download PDF

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Publication number
US3664946A
US3664946A US25750A US3664946DA US3664946A US 3664946 A US3664946 A US 3664946A US 25750 A US25750 A US 25750A US 3664946D A US3664946D A US 3664946DA US 3664946 A US3664946 A US 3664946A
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Prior art keywords
tool
impact
crust
hinged
impact beam
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Expired - Lifetime
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US25750A
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English (en)
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Hans Schaper
Kurt Springer
Edgar Kyburz
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Alcan Holdings Switzerland AG
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Alusuisse Holdings AG
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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

Definitions

  • a slag crust breaker for aluminum fusion electrolysis cells is supported on a trolley carriage of a semi-portal crane, and comprises: a swingable, horizontally directed impact beam; pneumatic impact tool means hinged to the free end of the impact beam; an adjustable pneumatic driving device for driving the impact beam; a pneumatic control device for controlling the hold of the impact tool means in its vertical position; and a torsion device coupled to the impact tool means for deviating the tool about the axis of the impact beam when a predetermined lateral obstacle during the operation of the breaker occurs.
  • This invention relates generally to slag crust breakers and, more particularly, to slag crust breakers of the type which automatically crash the slag crust on the fused electrolyte in a series of aluminum fusion electrolysis cells.
  • the slag crust breaking operation in electrolysis cells has no longer been carried out manually, but is made mechanically by movable, pneumatically driven crust breakers.
  • mechanical crust breakers have also been provided with an alumina feeding equipment to insure a complete fusion furnace attendance, and such complex automatic crust breakers will, in the following description, be called furnace manipulators.
  • Known mechanically operated movable crust breakers are designed in various types. For example, they are mounted on a steerable carriage, or supported on movable frameworks such as semi-portal cranes, portal cranes or bridge cranes that are adapted for travelling above a row of electrolysis cells.
  • the crust breaker usually comprises a vertical impact beam that is hinged or fixedly suspended at its top end to a movable support, and at its bottom end a pressure air cylinder with an impact tool are operatively mounted.
  • U.S. Pat. No. 3,372,106 describes means that decline the vertically arranged impact beam in this transverse direction.
  • the beam is kept in an operative vertical position by a horizontally acting spring loaded pushing rod so that predetermined lateral forces may decline the beam by overcoming the tension of this pushing rod.
  • the holding force is a function of fixed parameters of the spring and cannot be readily adjusted to changed operational conditions.
  • the bottom of the cell may sink or rise and, accordingly, the slag crust layer may be raised or lowered.
  • the thickness of the slag layer may vary as a result of different operational regimes or of different properties of the alumina (aluminum oxide) employed. Such operative fluctuation may occur at any time independently of the age of the electrolyte alone.
  • Alumina to be processed in the electrolysis cell is usually distributed on the slag crust in a layer which has a nonuniform thickness.
  • the alumina layer is fed into the electrolyte during the slag crust breaking process at quantities that are not optimum for the operation of the electrolysis cell. For example, an excess amount of alumina may cause siltation of the bath, whereas an insufficient amount may deteriorate the efficiency of the cell.
  • the known furnace manipulators do not enable a simultaneous attendance of both longitudinal and end sides of a rectangular cell.
  • These prior art manipulators have been designed for attending first one row of longitudinal sides and, subsequently, the opposite row of longitudinal sides. In the same manner the breaking operation along the end sides must have been accomplished.
  • an adjustment device for adjusting at least a lower limit of travel of the tool
  • a control device coupled between the impact beam and the tool assembly for holding the assembly in its operative position by an adjustable holding force, the arrangement being such that when the tool is subjected to horizontal forces greater than a pre-set magnitude, dependent on the adjustable holding force, the tool can deflect horizontally and swing the assembly about its hinge against the adjustable holding force.
  • the fact that the impact beams are arranged horizontally makes it possible to break the slag crust all along the end edges of the electrolytic cell.
  • the horizontal impact beam travels across under the anode electric leads. This allows the crust to be broken all the way across the cell.
  • the adjustment device for adjusting the lower limit of travel of the tool makes it possible to ensure that the tool always penetrates to the same depth through the crust, that is to say penetrates downwards to the same distance from the upper surface of the crust.
  • the control device for holding to the tool assembly in its operative position is preferably a pneumatic device.
  • the pre-set magnitude of the holding force can then be adjusted by operation of a pneumatic control system. In the use the magnitude of the holding force should be set so that the tool is not deflected by comparatively moderate horizontal thrusts but only when abnormally high thrusts are applied.
  • the crust breaker is equipped with a torsional spring device which allows the chisel to yield resiliently by pivoting against the influence of springs, about an axis which either coincides with or extends parallel to the impact beam axis.
  • stiffness of the action may be adjustable, so that the tool yields only when the applied horizontal thrust exceeds a specified maximum normal value.
  • the breaking of the slag crust along the end edges of the electrolytic cell may be considerably facilitated if the movable support is a trolley carriage which travels transversely across the cell axis.
  • a furnace manipulator preferably includes two crust breakers, each mounted on its own trolley carriage, the two trolley carriages travelling, for example towards or away from each other, transversely across the cell longitudinal axis. This allows the two sides of the cell to be served simultaneously, and also allows the crust to be broken along the end edges of the cell by a simultaneous double operation, starting from the middle of the edge. When the crust has been broken in one row of cells, the crust breaker can move to the next row of cells without it being necessary to rotate the furnace manipulator.
  • the crust breaker according to the invention preferably forms part of a furnace manipulator, each crust breaker having two alumina feeder tubes, one in front of and the other behind the tool, as seen in the direction of travel. This allows the crust breaker to break the crust while travelling in either longitudinal direction, along the sides ofthe cell.
  • Each crust breaker may then have two alumina scrapers, one in front of and the other behind the tool, as seen in the direction of travel.
  • the layer of alumina In front of the chisel the layer of alumina is scraped back, towards the side wall of the cell. Behind the chisel the alumina is pushed forward again, towards the middle of the cell, so as to distribute the alumina evenly, increasing the efficiency of the electrolytic process.
  • FIG. 1 is an elevational view, partly in section, of a furnace manipulator according to this invention, with two crust breakers disposed in an operative position within the electrolysis cell;
  • FIG. 2 is a sectional view taken along line 22 ofFIG. 1;
  • FIG. 3 is an elevational view, partly in section, of a modification of the furnace manipulator according to this invention.
  • FIG. 4 is a schematic elevational view, partly in section, of an undercarriage of the semi-portal crane in the furnace manipulator of this invention
  • FIG. 5 is a side view of the undercarriage of FIG. 4, taken perpendicularly to the direction of its travel;
  • FIG. 6 is an elevational view, partly in section, of an alumina feeding device
  • FIG. 7 is an orthographical fragmentary view of an adjustment device for the pneumatic drive of the impact beam in the crust breaker according to this invention.
  • FIG. 8 is a schematic elevational view, partly in section, of a pneumatic control device acting in the vertical plane of the impact beam for holding at a predetermined force the vertical working position of the impact tool;
  • FIG. 9 is a schematic sectional view of a fluid pressure distributing valve of the control device of FIG. 8 in an activated position for reducing the hold of the impact tool;
  • FIG. 10 is a side view, partly in section, of a torsion device for holding at a predetermined force in transverse direction the vertical working position of the impact tool;
  • FIG. 11 is a sectional view of the torsion device of FIG. 10, taken on line 11-11;
  • FIG. 12 is a fragmentary orthographical view of an alumina scraping blade
  • F IGS. 13 to 17 are elevational views of an alumina scraping device at the following positions:
  • FIG. 18 is a schematic plan view of a series of rectangular electrolysis cells with the indication of the operative steps in the crust breaking operation along the longitudinal sides of individual cells;
  • FIG. 19 is the view of FIG. 18 with indicated operational steps for the crust breaking operation along the end sides of the cells;
  • FIG. 20 is the view of FIG. 18 wherein another modification of the crust breaking process in a series of electrolysis cells is indicated.
  • FIG. 21 is the view of FIG. 18 of still another modification of the crust breaking process.
  • the furnace manipulator for attending aluminum fusion electrolysis cells 18 is mounted on a semi-portal crane 10 having a bridge 38 and two trolley carriages 57 supported for travel on the bridge 38.
  • One end of the bridge 38 is guided on an elevated crane runway 11 for travel in the direction of longitudinal sides of the cell 18.
  • the required support of the bridge 38 on the runway 11 provides movable stools 12 driven from a motor 14.
  • the opposite end of the bridge 38 is supported on an undercarriage 13 which moves on the ground floor of the smelting plant.
  • the undercarriage 13 is provided with rubber tires and has no separate driving means.
  • each of the movable stools 12 is driven by an electromotor 14 through a transmission gear 15 and travelling wheels 16.
  • fusion electrolysis cells 18 The structure of fusion electrolysis cells 18 is generally known to persons skilled in the art and, for reasons of simplification, only such parts of the cell 18 are illustrated in a sectional view in FIGS. 1 and 3 that are relevant to the operation of the crust breaker according to this invention.
  • Anodes 19 are attached by means of anode rods 20 and anode locks 21 to anode current conductors 22.
  • the cathode connection is insured by a cathode bar 23 at the bottom portion of the cell wall.
  • Alumina is dissolved in an electrolyte layer 24 and, by the effect of the electric current, alumina becomes electrolyzed and fused aluminum 25 settles on the bottom of the fusion tub or furnace 26.
  • a slag crust 27 results from the solidified electrolyte and from the undissolved alumina.
  • the uppermost layer is an alumina layer 28.
  • the undercarriage 13 is substantially built up of a parallelogram frame formed by a bifurcated link 29, by a guiding rod and by one arm of an elbow lever 33.
  • the bifurcated link 29 is provided with projecting studs that are in engagement with counteracting springs 32. These springs 32 are situated in a holding member 31 which is secured to the bridge 38.
  • the perpendicular arm of the elbow lever 33 supports an axle 34 upon which bearings 36 of the rubber tire wheels 37 are seated.
  • the bottom end of the perpendicular arm is operatively coupled with an undercarriage relieving device 35.
  • the aforementioned parallelogram frame eliminates the disadvantage of the prior art undercarriages, since the parallel linkage of the bifurcated link 29 and of the guiding rod 30 always maintains an upright position of the rubber wheels, even when the end of the bridge 38 performs a circular movement.
  • the restoring springs 31 restore normal vertical position of the links of the parallelogram when the bridge 38 travels on a rectilinear path again.
  • an air compressor 39 with a driving motor 40 and an air chamber 41 are mounted directly on the crane bridge 38. These pressure air sources supply pressure to various pneumatic driving and control devices which will be described later.
  • a storage container or hopper 42 for receiving, storing and discharging alumina; the hopper 42 has at its top portion a feeding pipe 43 and a ventilating filter 44.
  • the alumina To discharge alumina 45 from the hopper 42 (FIG. 2), the alumina must be aerified first.
  • the aerating bottom plates 46 are installed in the hopper 42.
  • Each bottom plate 46 comprises an air permeable intermediate plate made of a fabric or of ceramic, for example.
  • the aeration of alumina is accomplished in a known manner by feeding pressure air into a lock chamber 48. The excess pressure air passes through the alumina 45 and escapes through the filter 44 (FIG. 1) which retains carried alumina particles.
  • the aerified aluminum particles 45 are discharged in predetermined quantities by the aid of a dosing device 49 (FIG. 6) that includes a slide valve 50 communicating with a rotary dosing lock 51.
  • the lock 51 is supported for rotation on an axle 51a, and it is driven by a controlled drive 52.
  • the outlet opening of the lock 51 is coupled by a compression valve 53 to a discharging pipe 54 through which the aerified alumina flows into the electrolytic bath.
  • discharging pipes 54 are arranged in the direction of travel at each side of the impact tool 75. Consequently, it is possible to discharge alumina 45 into the electrolyte 24 in either direction of travel of the crane 10.
  • the alumina storing and discharging devices 42, 49 and 54 are integral with the crane bridge 38 and do not participate in the transverse movements of the trolley carriages 57, the end sides of the electrolysis cells are not supplied with alumina during the crust breaking action at these end sides. For this reason, the dosing device is put out of operation by a suitable conventional control device (not shown). At the same time, the aluminum scrapers are contracted into their lifted rest position (FIG. 13).
  • the slag crust 27 be covered by a sufficient layer of alumina even at the end sides of the cell 18. This can be accomplished by increasing the amount of alumina at the corners in each cell and by spreading this excess layer portion along the end sides.
  • a dust proof switching box 55 is also fixedly mounted on the movable crane bridge 38.
  • the box 55 contains pneumatic switching means for supplying pressure to respective driving and controlling devices of the furnace manipulator.
  • Two parallel trolley travel rails 56 are arranged lengthwise on the crane bridge 38 to guide and support travel wheels 58 of the trolley carriages 57. These trolley carriages can, therefore, be moved in transverse direction to the travel of the bridge 38, and they are driven independently one from another by motors 59 and by transmission gears 60 (FIG. 2).
  • the movement of the trolley carriages 57 is equalized by means of rollers 61, rocking levers 62 and tension springs 63.
  • the rollers 6] follow parallel bottom rails 64 that are attached to the bottom surface of the crane bridge 38.
  • the two trolley carriages support, in addition to the proper crust breakers, further devices that are needed for the attendance of the fusion furnace.
  • the entire furnace manipulator is designed so as to enable any desired pattern of the crust breaking operation, namely to penetrate the slag layer along any desired continuous or interrupted lines both at the longitudinal and at the end sides of a row of cells.
  • the control of the automatic travel of the furnace manipulator, as well as of the automatic charging and discharging of the hopper 42 is effected by a suitable conventional electronic control equipment that is connected in cooperation with the switching box 55.
  • a suitable conventional electronic control equipment that is connected in cooperation with the switching box 55.
  • the following electrical control devices are employed for the furnace manipulator according to this invention: a travel program transmitter 66 which is located outside the furnace manipulator and which transmits instructions for the travel program of the crane 10; a travel program receiver 67 disposed on each trolley carriage 57 to cooperate with the program transmitter 66.
  • a furnace program transmitter 68 is mounted near the crane travel rail 11 and cooperates with a receiver 69 to control the electrolysis cell 18.
  • a mechanical sensing device for controlling the slag breaking action within the cells 18 comprises a sensing roller 70 and a limit switch 71 which is coupled with copying rails 72 and sensing switches 73. The sensing switches turn on or off the driving and controlling devices of the furnace manipulator.
  • the crust breaker that is supported by the trolley carriage 57 comprises basically a swingable horizontally directed impact beam 92, and swingable vertically directed impact tool means 74 with an impact tool 75 such as, for example, a chisel made of a self-hardening steel.
  • the impact beam is driven for an oscillatory movement by a pneumatic drive 77.
  • the striking range of the impact tool 75 can be adjusted by means of a stroke adjustment device 76 coupled to the pneumatic drive 77, as illustrated in greater detail in FIG. 7.
  • the cylinder of the pneumatic drive 77 is hinged between the impact beam 92 and the vertically adjustable part 78 of the stroke adjustment device 76.
  • This part 78 is slidably arranged between a fork 79 that is welded between two side plates 82 integral with the body of the trolley carriage 57.
  • the vertical adjustment is carried out by left-hand and right-hand threaded halves of a spindle 80.
  • the spindle is locked in the set position by a lock nut 81.
  • the impact tool means 74 includes preferably a pneumatic hammer 83 with the impact tool 75.
  • the hammer 83 is fastened in a swingable mounting bracket 84 which pivots about an axle 85 in the vertical plane of the impact beam 92.
  • the vertical working position of the hammer 83 is adjustably insured by a pneumatic control device 86 (FIG. 8) which determines and controls the force that is necessary for overturning the hammer 83 about the axle 85 in the direction perpendicular to the longitudinal axis of the electrolysis cell.
  • the penetration of the slag layer in transverse direction to the longitudinal axis of the cell is extremely important to attain optimum working regime of the fusion furnace as well as to insure a high performance.
  • the novel swingable arrangement of the impact tool means 74 eliminates the damaging excess lateral stresses against the impact tool 75 which occur during the slag crust breaking operation and, at the same time, due to the action of the pneumatic control device, the tool 75 remains unaffected by insignificant lateral strains.
  • the pneumatic control device 86 comprises a pneumatic cylinder 87 with a piston 88 and a piston rod 89.
  • the piston 88 divides the interior of the cylinder 87 into pressure space 90, and into counterpressure space 91.
  • the pressure space 90 is connected via a conduit to a pressure source, whereas the counterpressure space 91 is normally connected with the outer atmosphere.
  • the piston 88 sets and locks with a considerable force the impact tool means in its working vertical position, so that the penetration through the slag crust is facilitated. Only if a lateral counterpressure on the tool 75 exceeds the pressure in the space 90, the pneumatic hammer 83 may be overturned.
  • the mounting bracket 84 has the shape of an elbow lever that is jointed to the end of the piston rod 89.
  • the pressure space 90 communicates through a chamber 99 in the slidable piston of a pressure distributing valve 94 with a pressure air conduit 95.
  • a tension spring 98 displaces the slidable piston 97 to its extreme right-hand position.
  • a solenoid 96, counteracting the tension spring 98, is at that moment without current.
  • the resulting power pulse is converted by a suitable transducer into a control signal that actuates the solenoid 96 of the pressure distributing valve 94.
  • the armature 103 which is integrally connected to the slidable piston 97 thus becomes actuated and displaces the piston 97 against the tension of the spring 98 to its extreme left-hand position in the valve 94 (FIG. 9).
  • Pressure air from the conduit 95 can now enter via the annular chamber 99 both the pressure space 90 and the counterpressure space 91 of the cylinder 87. As a result, the pressures against the opposite piston surfaces 104 and 106 will neutralize the holding force of the piston 88.
  • the position above the slag layer of the hammer 83 may be controlled by a combined action of a horizontally directed impact beam with the transverse movement of the trolley carriage 57 that may advance in the direction of the end walls of the cell 18 as far as the longitudinal center line where the breaking operation is initiated and proceeds toward the rim of the cell.
  • the operation of the tool 75 may continue without any interruption along the longitudinal tire length of the line of striking, and that no portions of this line remain unbroken.
  • a torsion device 139 eliminates the aforementioned disadvantage of conventional devices.
  • the impact beam 92 may have the form of a torsion rod, so that the tool 75 is partially turned about the axis of the beam 92 when excess lateral forces start acting against the tool 75 in the direction of the longitudinal axis of the cell, namely in the direction of travel of the crane bridge 38.
  • the tool 75 is held in its vertical working position by two strong counteracting springs 107 (FIGS. 10 and 11).
  • the axle for pivotally supporting the impact tool means 74 is secured to one end of a sleeve 108.
  • the sleeve 108 is seated for free rotational movement on the impact beam 92.
  • Two spring barrels 111 with springs 107 and plungers are fixedly arranged opposite each other on the second end of the sleeve 108.
  • a rigid stud 109 projects radially from the impact beam 92 between the two counteracting springs 107 so that the beam 92 is resiliently held in an upright position.
  • the tension of the springs 107 is adjustable by threaded plugs 112.
  • the alumina layer on the line of breaking is successively removed from the range of the tool 75 and is displaced toward the rim of the cell and toward the anode.
  • pneumatically operated alumina scraping devices 113 are arranged on the trolley carriage 57 at each side of the impact beam 92, and are extendable as far as the anodes 19. The detailed structure and operation of the scraping device 113 will be explained with reference to F IGS. 12 to 17.
  • the proper scraping tool is a scraping blade 114 (FIG. 12) that is swingably supported on an axle 115 at one end of the scraping arm 116.
  • Tension spring means 117 keep the scraping blade 114 in its normal operative position but permit an angular displacement of the blade about the axle 115 if a rigid obstacle happens in its path of movement.
  • the scraper arm 1 16 is linked to a piston rod 121 ofa pneumatic piston which is situated in a pneumatic driving cylinder 119.
  • This linkage has the form of a toggle joint linkage resulting from the jointed elbow lever 122. The position of this toggle joint determines the restricted rest position or the extended working position of the entire scraping device 1 13.
  • the movement of the scraping device 113 is controlled by a driving pneumatic cylinder 123 having a piston 124 and a piston rod 125.
  • the outer end of the piston rod 125 is jointed to the end of the scraping arm 1 16.
  • the entire scraping device 113 is mounted on a rocker 126 which is pivotally supported on a fixed axle 127.
  • the scraper blade 114 is put into and out of engagement with the alumina layer 28 by a combined action of the pneumatic cylinder 123 with the oscillatory movement of the piston 28 in a pneumatic cylinder 128 driving the rocker 126.
  • FIG. 14 shows the position of the scraping device 113 at the moment when the scraping step has been completed.
  • the edge of the scraper blade 114 is to be found at the point 131 at the end of the operative trajectory 132 of the scraper blade 114, as marked by the dot and dash lines.
  • FIG. 15 illustrates the position of the scraping device 1 13 at the moment when the scraper blade 114 has been disengaged

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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)
  • Crushing And Grinding (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
US25750A 1969-10-24 1970-04-06 Crust breaker for aluminum fusion electrolysis cells Expired - Lifetime US3664946A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1587769A CH524686A (de) 1969-10-24 1969-10-24 Fahrbarer Krustenbrecher

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US3664946A true US3664946A (en) 1972-05-23

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US (1) US3664946A (de)
JP (1) JPS5040093B1 (de)
AT (1) AT326927B (de)
BE (1) BE757942A (de)
CA (1) CA921433A (de)
CH (1) CH524686A (de)
DE (1) DE2052517C3 (de)
FR (1) FR2066482A5 (de)
GB (1) GB1262069A (de)
NL (1) NL7014231A (de)
NO (1) NO125235B (de)
YU (1) YU35971B (de)
ZA (1) ZA707197B (de)

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DE2943296A1 (de) * 1979-09-10 1981-03-19 Schweizerische Aluminium AG, 3965 Chippis Vorrichtung zur bedienung von elektrolyseoefen
US4702324A (en) * 1984-05-14 1987-10-27 Aluminum Company Of America Control system for positioning and operating a pneumatic percussion tool
US5294318A (en) * 1992-07-15 1994-03-15 Louis A. Grant, Inc. Crustbreaking assembly for aluminum electrolysis cells
US5914023A (en) * 1994-07-15 1999-06-22 Terry Fluid Controls Pty Ltd Actuator
US20030089407A1 (en) * 2001-08-03 2003-05-15 Bento Jose C. Solenoid valve for reduced energy consumption
US6649035B2 (en) 2001-05-04 2003-11-18 Ross Operating Valve Company Low energy and non-heat transferring crust breaking system
US20060060469A1 (en) * 2003-01-31 2006-03-23 Patrick Delescluse Serving machine for electrolysis cells for producing aluminium
US20080307625A1 (en) * 2005-12-16 2008-12-18 E.C.L. Method for Removing Anode Residues Attached to Spent Anodes Coming from Melt Bath Electrolysis Potlines
CN101298683B (zh) * 2008-04-30 2011-09-07 福建省南平铝业有限公司 一种电解槽结构
CN102560557A (zh) * 2010-12-07 2012-07-11 中铝国际技术发展有限公司 电解槽阳极大母线垂直支承结构
US20120313298A1 (en) * 2011-06-13 2012-12-13 Mac Valves, Inc. Crust breaker aluminum bath detection system
CN102992192A (zh) * 2012-10-17 2013-03-27 青铜峡铝业股份有限公司 多功能天车出铝小车压缩空气管道装置
FR3032461A1 (fr) * 2015-02-09 2016-08-12 Ecl Procede pour desengager un ensemble anodique use d'une cuve d'une installation de production d'aluminium
WO2016128661A1 (fr) * 2015-02-09 2016-08-18 Fives Ecl Unité pour l'exploitation d'une installation de production d'aluminium, installation de production d'aluminium et procédé d'exploitation d'une telle installation
CN107904625A (zh) * 2017-12-17 2018-04-13 大连怡和工业有限公司 智能打壳系统及其控制方法
CN109702181A (zh) * 2019-01-18 2019-05-03 三门峡三星智能装备制造有限公司 一种铝锭铸造生产线及其打渣装置
RU2758049C1 (ru) * 2021-04-12 2021-10-25 Общество с ограниченной ответственностью "Инжиниринг Строительство Обслуживание" Рабочий орган для пробивки корки электролизера для получения алюминия
RU2760148C1 (ru) * 2021-04-26 2021-11-22 Общество с ограниченной ответственностью "Инжиниринг Строительство Обслуживание" Машина для пробивки корки электролита в алюминиевом электролизере

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JPS52127568U (de) * 1976-03-24 1977-09-28
DE2943295C2 (de) * 1979-09-10 1983-02-03 Schweizerische Aluminium AG, 3965 Chippis Vorratsbunker für eine Einschlagvorrichtung
US4617100A (en) * 1985-10-07 1986-10-14 Aluminum Company Of America Non-conductive plugger foot
JPS62119975U (de) * 1986-01-20 1987-07-30
US8367953B2 (en) 2008-06-17 2013-02-05 Mac Valves, Inc. Pneumatic system electrical contact device
US7915550B2 (en) 2008-06-17 2011-03-29 Mac Valves, Inc. Pneumatic system electrical contact device
CN110344082B (zh) * 2019-07-18 2020-12-08 国家电投集团远达环保工程有限公司重庆科技分公司 用于铝电解槽侧面罩板的滑动机构
CN111111898B (zh) * 2020-01-23 2022-04-12 廉博 一种电解壳面块直接上净化系统消化利用技术工艺
CN113403647A (zh) * 2021-06-08 2021-09-17 湖南天桥嘉成智能科技有限公司 铝电解块状渣去除方法和铝电解多功能机组碎渣装置

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FR1033150A (fr) * 1951-02-26 1953-07-08 Machine à piquer pour cuves de fabrications métallurgiques
US2964305A (en) * 1958-11-20 1960-12-13 Chicago Pneumatic Tool Co Crust breaking apparatus
GB1017163A (en) * 1963-03-04 1966-01-19 Alcan Aluminium Ltd Crust breaking device for electrolysis furnaces

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2943296A1 (de) * 1979-09-10 1981-03-19 Schweizerische Aluminium AG, 3965 Chippis Vorrichtung zur bedienung von elektrolyseoefen
US4328085A (en) * 1979-09-10 1982-05-04 Swiss Aluminium Ltd. Device for servicing electrolytic cells
US4702324A (en) * 1984-05-14 1987-10-27 Aluminum Company Of America Control system for positioning and operating a pneumatic percussion tool
US5294318A (en) * 1992-07-15 1994-03-15 Louis A. Grant, Inc. Crustbreaking assembly for aluminum electrolysis cells
US5914023A (en) * 1994-07-15 1999-06-22 Terry Fluid Controls Pty Ltd Actuator
US6649035B2 (en) 2001-05-04 2003-11-18 Ross Operating Valve Company Low energy and non-heat transferring crust breaking system
US20030089407A1 (en) * 2001-08-03 2003-05-15 Bento Jose C. Solenoid valve for reduced energy consumption
US20060060469A1 (en) * 2003-01-31 2006-03-23 Patrick Delescluse Serving machine for electrolysis cells for producing aluminium
US20080307625A1 (en) * 2005-12-16 2008-12-18 E.C.L. Method for Removing Anode Residues Attached to Spent Anodes Coming from Melt Bath Electrolysis Potlines
CN101298683B (zh) * 2008-04-30 2011-09-07 福建省南平铝业有限公司 一种电解槽结构
CN102560557A (zh) * 2010-12-07 2012-07-11 中铝国际技术发展有限公司 电解槽阳极大母线垂直支承结构
US20120313298A1 (en) * 2011-06-13 2012-12-13 Mac Valves, Inc. Crust breaker aluminum bath detection system
US8932515B2 (en) * 2011-06-13 2015-01-13 La-Z-Boy Incorporated Crust breaker aluminum bath detection system
CN102992192A (zh) * 2012-10-17 2013-03-27 青铜峡铝业股份有限公司 多功能天车出铝小车压缩空气管道装置
FR3032461A1 (fr) * 2015-02-09 2016-08-12 Ecl Procede pour desengager un ensemble anodique use d'une cuve d'une installation de production d'aluminium
WO2016128661A1 (fr) * 2015-02-09 2016-08-18 Fives Ecl Unité pour l'exploitation d'une installation de production d'aluminium, installation de production d'aluminium et procédé d'exploitation d'une telle installation
WO2016128652A1 (fr) * 2015-02-09 2016-08-18 Fives Ecl Procédé pour désengager un ensemble anodique usé d'une cuve d'une installation de production d'aluminium
CN107904625A (zh) * 2017-12-17 2018-04-13 大连怡和工业有限公司 智能打壳系统及其控制方法
CN109702181A (zh) * 2019-01-18 2019-05-03 三门峡三星智能装备制造有限公司 一种铝锭铸造生产线及其打渣装置
RU2758049C1 (ru) * 2021-04-12 2021-10-25 Общество с ограниченной ответственностью "Инжиниринг Строительство Обслуживание" Рабочий орган для пробивки корки электролизера для получения алюминия
RU2760148C1 (ru) * 2021-04-26 2021-11-22 Общество с ограниченной ответственностью "Инжиниринг Строительство Обслуживание" Машина для пробивки корки электролита в алюминиевом электролизере

Also Published As

Publication number Publication date
NL7014231A (de) 1971-04-27
NO125235B (de) 1972-08-07
CA921433A (en) 1973-02-20
CH524686A (de) 1972-06-30
JPS5040093B1 (de) 1975-12-22
YU35971B (en) 1981-11-13
ZA707197B (en) 1971-07-28
DE2052517C3 (de) 1980-10-02
DE2052517A1 (de) 1971-05-06
YU257370A (en) 1981-04-30
FR2066482A5 (de) 1971-08-06
AT326927B (de) 1976-01-12
BE757942A (fr) 1971-04-01
DE2052517B2 (de) 1975-08-14
GB1262069A (en) 1972-02-02

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