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WO1981002007A1 - Procede et appareil d'alimentation en un materiau de charge - Google Patents

Procede et appareil d'alimentation en un materiau de charge Download PDF

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Publication number
WO1981002007A1
WO1981002007A1 PCT/US1980/001734 US8001734W WO8102007A1 WO 1981002007 A1 WO1981002007 A1 WO 1981002007A1 US 8001734 W US8001734 W US 8001734W WO 8102007 A1 WO8102007 A1 WO 8102007A1
Authority
WO
WIPO (PCT)
Prior art keywords
carriage
agitator
hopper
area
moving
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.)
Ceased
Application number
PCT/US1980/001734
Other languages
English (en)
Inventor
J Wilkuski
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.)
Johns Manville Corp
Johns Manville
Original Assignee
Johns Manville Corp
Johns Manville
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 Johns Manville Corp, Johns Manville filed Critical Johns Manville Corp
Priority to JP81500671A priority Critical patent/JPS57500064A/ja
Priority to DE8181900377T priority patent/DE3070366D1/de
Priority to AU67776/81A priority patent/AU537549B2/en
Publication of WO1981002007A1 publication Critical patent/WO1981002007A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B3/00—Charging the melting furnaces

Definitions

  • the present invention relates broadly to the art of making molten materials and more particularly is concerned with an improved method of and apparatus for feeding batch materials into an electric malting furnace.
  • regions of thinly covered malt may allow equipment located over the furnace, such as a batch feeder, to be exposed to excessive heat.
  • the malt temperature may rise and uncontrollably increase the melt flow rate. Too much batch material also promotes formation of a surface crust which binders the passage of the overlaying batch material to the malt line.
  • the batch feeders disclosed in the prior art do not insure that a thin, uniform layer of batch material is deposited over the melt.
  • Another typical disadvantage is that the feeders require high maintenance.
  • An ideal batch feeder would provide a controlled and uniform batch covering, generate little or no dust conditions in the working environment proximate to the furnace, be. mechanically simple, inexpensive to construct, operate and maintain and would be highly reliable.
  • An additional object is the provision of a batch feeder for an open top electric furnace capable of depositing batch material onto the entire melt surface of the furnace in a controlled uniform manner.
  • Another object of the present invention is the provisio of a batch feeder that insures an optimal thickness.
  • a further object of the present invantion is the provision of a batch feeder which is mechanically simple, inexpensive to build, operate, maintain and highly reliable.
  • Yet another object of the instant invention is the provision of a batch feeder which reduces dust conditions in the working environment proximate to the f ⁇ rnace.
  • a still further object of the present invention is the provision of a method of feeding batch ⁇ aterial to an open top electrical furnace in a manner that effectively and efficiently reduces heat loss to the upper surface of the melt.
  • the present invention provides, in a circular open top electric fjrnace, a method for depositing particulate material over a desired area, ccmprising Supporting a carriage above the area, supporting a hopper having a discharge opening en said carriage, filling the hopper with particulate material, moving the carriage over the area, moving a perforated chamber over the discharge opening and through the particulate material in the hopper thereby forcing the particulate material into the chamber and allowing the particulate material to fall onto the area.
  • the invention also includes an apparatus for depositing particulate material over a desired area, such as the upper surface of a molten mass carried in a circular open top furnace which comprises a trough-like hopper for holding particulate material.
  • the hopper is carried by a carriage which is mounted for rotation in a horizontal plane such that the hopper traverses the circular area in the fashion of a radial arm about the center of the area, the bottom of the hopper having a single longitudinal discharge opening that extends generally radially from the center of the area to the outermost extent of the area.
  • the apparatus also includes means for supporting the carriage and means far rotating and counter-rotating the carriage.
  • An agitator or a pnuematically operated perforated feed bar is located within the hopper in the vicinity of the longitudinal opening for engaging and stirring material w ⁇ thin the hopper thereby facilitating the flow of material through the perforations in the feed bar.
  • the agitator is connected to a pnuematic or electric recipricator (or air vibrator) for driving the agitator whenever the carriage is in motion.
  • FIG. 1 is a simplified plan view of the batch distributor or feeder assetribly of the present invention.
  • FIG. 2 is a partial cross sectional view taken along lines 2-2 in FIG. 1.
  • FIG. 3 is a partial view, with parts broken away, taken along lines 3-3 of FIG. 1.
  • FIG. 4 is a partial cross sectional view taken along the lines 4-4 in FIG. 1.
  • FIG. 5 is a partial cross sectional view taken along lines 5-5 in FIG. 1.
  • FIG. 6 is a partial cross sectional veiw taken along lines 6-6 in FIG. 1.
  • the batch distributor or feeder asse ⁇ foly 10 of the present invention may be disposed above an open-top, circular melting furnace (not shown) for melting particulate batch materials such as refractory or glass materials (cullet may also be present) and includes a furnace shell from which molten material may be discharged through an outlet member.
  • Primary electrodes are positioned radially about an outlet member and are used to melt particulate batch material by the heating effect of current flowing between the primary electrodes and the outlet member to form a pool of molten material.
  • the configuration of both the furnace and electrodes may be of the general type illustrated in U.S. Patent No. 3,983,309.
  • a batch layer, established on the surface of the molten mass by the batch distributor 10 replenishes the pool of molten material in the furnace as molten material is discharged and also acts as an insulating blanket to insure efficient operation of the furnace.
  • the batch distributor 10 embodying the present invention is .shown in FIG. 1 and comprises a plurality of drive pedestal subassemblies 12, a main upper drive ring siibasseir ⁇ oly 14, a distrioutor support 16 and a distributor 18.
  • Each subassembly 12 also provides a means for rotating and counter- rotating the main drive ring subassembly 14 about the center of the furnace or the area onto which the particulate material may be deposited.
  • Each drive pedestal subassembly 12 comprises a support post or drive pedestal 20 upon which is fixed a hunting plate 22
  • a drive platform 24 is affixed by means of attachment bolts 26 to the plate 22.
  • a support frame 28 is slidably mounted upon the platform 24 by means of a pair of adjustably fixable support clamps 30 which cause a lower mounting plate 32 of the frame 28 to slidingly bear against the upper surface of the platform 24.
  • Supported by each frame 28 is a motor 34 which is connected via a gear box 36 to a pnuematic tire 38 which abuttingly contacts a main upper drive ring 40 of the main upper drive ring subassembly 14.
  • the pnuematic tire 38 contacts the exterior surface of the ring 40 and is driven by the motor 34 such that the ring 40 may be driven either clockwise or counterclockwise.
  • the force that the pnuematic tire 38 imposes upon the ring 40 may be controlled by an adjustment means 31.
  • Adjustment means 31 comprises a post 33 which is affixed to the lower. mounting plate 32 of the frame 28 and a post 35 which is affixed to the upper surface of the platform 24.
  • a threaded shaft 37 is mtatably mounted within the post 35 and within the post 33.
  • a pair of collars 39 fix the end of the shaft 37 whereupon rotation of the shaft 37 the lower plate 32 of the frame 28 may be displaced relative to the post 35 with a concomitant adjustment of the force that the pnuematic tire 38 imposes upon the ring 40.
  • a lock nut 41 fixedly positions the shaft 37 after the desired adjustment has been made.
  • the main upper drive ring 40 is suitably supported by means of a plurality of drive ring support wheels 42 which are fixed on shafts 44.
  • Each of the two shafts 44 is rotatably supported on a platform 22 by means of a plurality of bearings such as pillow blocks 46 which are suitably attached to the undersurface of each plate 22.
  • a bearing 48 fixed within a lower ring 50, that is suitably supported fr ⁇ n the undersurface of a platform 24, also provides rotational support for the shafts 44.
  • a plurality of collars 52 constrain the longitudinal or lateral movement of each shaft 44 while still permitting rotation of a shaft 44.
  • the main upper drive ring assembly 14 also comprises a pair of mounting ears 54 (see FIGS. 1 and 6) which are suitably supported from the lower flange 56 of the ring 40.
  • the mounting ears 54 provide a means of supporting the components o£ the distributor support 16.
  • the distributor support 16 comprises a pair of cross members
  • the particulate batch material receiving distributor 18 Suitably attached to cne portion of the distributor support 16 is the particulate batch material receiving distributor 18 which comprises, as shown in FIGS. 1 and 4, a closed, generally V-shaped trough, or hopper 62 which is provided with a longitudinal discharge opening 64 and an open top ⁇ r material intake opening 66.
  • the discharge opening has a lineal extent which is substantially equal to the radius of the furnace and is reinforced by means of angle irons 67, which insure that the discharge opening configuration is rot deformed by high temperatures experienced proximate the furnace.
  • the trough 62 is supported upon the cross members 58 via a plurality of transverse angle iron support meroers 68 and bolts 70 which attach the outer portions of the support mstibers 68 to upper surfaces of the cross members 58.
  • the position of the trough 62 relative to the batch layer may be suitably adjusted by means of shims, not shown, which may be inserted between the flanges of the members 68 and the cross members 58.
  • the agitator 80 comprises a center post or a stem 82 and a pair of gussets 84 to which are suitably attached a pair of elongated parallel plates 86.
  • the plates 86 are fixed apart in a parallel relationship by means of a spacer 88.
  • a pair of end caps 92 together with the plates 86 define a material discharge chamber 94 in which is positioned a pair of vertical pins 96 that are fixed at opposite ends of the trough 62 proximate the discharge opening 64.
  • particulate batch material becomes lodged between the outer periphery of the pins 96 and the inner surface of each of the plates 86. Together with the pins 96, the particulate material acts like a hinge to constrain the lateral movement of the lower edges of the plates 86 so that the upper portion of the agitator may be moved by a vibrator (discussed below) and particulate material disposed within the trough 62 may be forced to pass through a plurality of holes or perforations 37 formed in each of the plates 86.
  • the perforations 87 are disposed in a regular array comprising several rows of perforations.
  • the perforations 87 do not extend to the lower edge 89 of the plates 86 in order to substantially seal the bottom of the discharge chamber 94.
  • the hole pattern, hole size, nu ⁇ cer and depth is selected to take advantage of the phenomenon wherein particulate batch material will bridge thereby preventing particulate material frcm flowing into and through the perforations 87 when the agitator 80 is motionless.
  • a vibrator 98 which may be pneumatic ⁇ r electric, capable of rapidly reciprocating in a single plane, is affixed to a flange 100 of the trough 62 and to a threaded end portion 102 of the stem 82 by means of a bolt 104 and nuts 106, respectively.
  • the pneumatic air vibrator 98 is capable of reciprocating up to a maximum amplitude of approximately 1/16 of an inch at a frequency of approximately 3200 vibrations per minute.
  • the frequency of vibration should be selected to avoid resonant frequencies of the structure of the feed bar.
  • the vibrati ⁇ nal frequency should not be so high as to be absored by the feed bar structure but should be high enough to cause the feed bar 80 to move through the particulate batch material. The optimum vibrati ⁇ nal frequency for a particular application appears to be best determined through trial and error.
  • the vibrator 98 moves one end of the feed bar 80 relative to another end, i.e., the end 102 relative to the lower edges of the plates 86.
  • the vibrator 98 may be supplied with a motive fluid by means of a threaded fitting 108 which releasably attaches a reinforced flexible hose 110.
  • the hose 110 is connected to a source of motive fluid (not shown), such as air by means of an elbow fitting 111 (see FIG. 1) fixed en the top flange 116 of the ring 40 and a hose payoff unit ⁇ r a reel 112 which is fixed relative to the ring 40.
  • the hose 110 is paid off the reel 112 and guided by means of an air hose guide ⁇ r a channel 114 that is fixed atop the top flange 116.
  • the trough 62 is fed with a particulate batch material by means of a system (not shown herein but illustrated in U. S. Patent No. 4,142,880).
  • a system not shown herein but illustrated in U. S. Patent No. 4,142,880.
  • Shown in FIG. 2 of that patent is a batch dispersion box held in posici ⁇ n above the batch distributor of that patent by a support arm.
  • the batch dispersion box has four sides and a top with an open bottom being disposed such that the batch distributor may be rotated into a loading position where the open top of the distribution trough of the batch distributor is directly below the dispersion box and aligned with an opening in the box.
  • a catent is affixed to a portion of a support frame which is below and radially in alignment with the dispersion box.
  • a limit switch actuator depends upwardly from a right angle drive so as to engage the limit switch when the trough has been revolved to a loading position.
  • a non-contact level sensor is preferably located along the lengrt-h of the dispersion box and is responsive to the level of batch material within the trough.
  • a hopper holding a reservoir of batch material is located above a metering unit to which it delivers batch material by way of a valve. The valve will automatically deliver a quantity of batch material to the holding chamber of the metering unit equal to an amount sufficient for filling the distribution trough.
  • a high pressure air blast periodically delivered to the air-tight chamber of the metering unit, will propel its charge of batch material through a conduit as a plug of material in the manner known as dense phase conveying.
  • the conduit connects with the interior of the dispersion box through a discharge pipe which directs material downwardly towards the trough. Any excess dust is returned by another conduit through a dust collector, which in turn redelivers the collected material to the metering unit.
  • the pnuanatic vibrator 98 is actuated and causes the upper portion of the stem 82 to reciprocate back and forth through a relatively small displacement (e.g., less than 1/16 inch).
  • the frequency and amplitude of movement of the vibrator 98 as well as the perforation size, perforation distribution and depth (the depth of the perforations is governed by the thickness of the plates 86) are the variables controlling the mass flow rate of the batch material through the charber 94.
  • the size of the particles of the batch material is an important factor used in determining the perforation parameters.
  • the batch material in the trough on the outside of the plates 86 tends to constrain the lateral movement of the lower edges of thes plates 86.
  • some particulate material becomes lodged in the clearance defined between the pins 96 and the inner surface of each of the plates 36.
  • the pins 96 in combination with this particulate material, function as a hinge which tends to restrict the lateral movement (left to right, right to left movement as viewed in FIG. 4) of the lower edges of the plates 86.
  • the vibrating feed bar or agitator 80 is caused to be moved back and forth through the particulate material disposed in the trough 62 by the reciprocating arm of the vibrator 98 (note double arrows in FIG.4).
  • the agitator 80 is forced to move back and forth through the material, the material is urged through the perforations 87 and directed into the material discharge chamber 94.
  • the particulate material falls by means of gravity through the discharge opening 64 and onto the batch layer as a well-defined sheet of particulate batch material.
  • a limit switch 122 (see FIG.l), fixed relative to the rotatable ring 40, stops the motion of the pnuematic tire causing the entire assembly to come to rest and deactivates the vibrator 98. Cnce put in motion, the batch feeder of the present invention will make cne revolution of the furnace after which the trough 62 will be delayed at its loading position at the limit switch 122 for a number of seconds which time period allows for any necessary recharging of the trough 62 and a sensing of the batch layer thickness. The depositing action will be automatically resumed and the upper ring rotated in a direction opposite to the original direction when the heat sensors indicate the need for a continued distribution of batch material.
  • a controlled layer of batch may be uniformly and reliably deposited over the melt of an electric furnace.
  • the apparatus could be translated in a linear feshion over a rectangular shaped furnace.
  • two diametrically opposed troughs oould be provided with motion limited (in the case of a circular furnace) to 180° of rotation.
  • the troughs could be filled from a single location allowing the system to rotate back and forth through the desired 180o.
  • a single trough, extending diametrically across a circular furnace could be utilized. It is understood that such modifications can be made without departing from the scope of the invention if they are within the spirit and tenor of the accompanying claims.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)
  • Glass Melting And Manufacturing (AREA)

Abstract

L'invention se rapporte aux dispositifs de changement pour fours de fusion permettant de deposer une couche uniforme d'un materiau de charge par deplacement d'une cuve (62) sur une zone desiree du four. La cuve (62) possede un agitateur a vibrations (80) qui agit sur une chambre de decharge perforee pivotante (94) disposee dans la cuve (62) pour forcer le materiau de charge au travers des perforations (87) dans l'agitateur (80) d'ou le materiau de charge tombe par gravite dans la zone desire du four. La dimension, la profondeur, et la distribution des perforations (87), ainsi que l'amplitude et la frequence des vibrations de l'agitateur (80) commandent le debit du materiau de charge dans le four lorsque l'agitateur (80) est en mouvement et arretent le depot lorsque l'agitateur (80) est a l'arret.
PCT/US1980/001734 1980-01-14 1980-12-22 Procede et appareil d'alimentation en un materiau de charge Ceased WO1981002007A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP81500671A JPS57500064A (fr) 1980-01-14 1980-12-22
DE8181900377T DE3070366D1 (en) 1980-01-14 1980-12-22 Method and apparatus for feeding batch material
AU67776/81A AU537549B2 (en) 1980-01-14 1980-12-22 Method and apparatus for feeding batch material

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/112,017 US4285713A (en) 1980-01-14 1980-01-14 Method and apparatus for feeding batch material
US112017 1980-01-14

Publications (1)

Publication Number Publication Date
WO1981002007A1 true WO1981002007A1 (fr) 1981-07-23

Family

ID=22341694

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1980/001734 Ceased WO1981002007A1 (fr) 1980-01-14 1980-12-22 Procede et appareil d'alimentation en un materiau de charge

Country Status (9)

Country Link
US (1) US4285713A (fr)
EP (1) EP0043832B1 (fr)
JP (1) JPS57500064A (fr)
BE (1) BE887048A (fr)
CA (1) CA1154485A (fr)
DE (1) DE3070366D1 (fr)
FI (1) FI67834C (fr)
IT (1) IT1142215B (fr)
WO (1) WO1981002007A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4954034A (en) * 1984-10-05 1990-09-04 Zurn Industries, Inc. Vibratory fuel feeder for furnaces
GB2265618A (en) * 1992-03-30 1993-10-06 Pilkington Glass Ltd Glass melting
WO1998003438A1 (fr) * 1996-07-24 1998-01-29 Termo D.D., Industrija Termic^¿Nih Izolacij, S^¿Kofjaloka Procede et dispositif de renvoi de dechets metalliques dans un cubilot

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4418816A (en) * 1981-10-19 1983-12-06 Lev Kropp Inertial conveyor
US5558691A (en) * 1994-09-13 1996-09-24 Merkle Engineers, Inc. Cullet feeder
KR100384050B1 (ko) 1994-10-12 2003-08-21 어드밴스트 글래스파이버 얀스, 엘엘씨 유리섬유부쉬세그먼트에서가열및냉각을제어하는방법및장치
DE19755890A1 (de) * 1997-12-05 1999-06-17 Mannesmann Ag Beschickungseinrichtung für Schachtöfen
CN1907825B (zh) * 2006-08-23 2011-02-16 长沙通发高新技术开发有限公司 带回转中心支承装置的回转布料机
KR101516480B1 (ko) 2013-08-16 2015-05-04 주식회사 엘지실트론 폴리 실리콘 충진장치
CN109794734B (zh) * 2019-01-23 2020-03-31 武汉船用机械有限责任公司 环梁的加工方法
CN114588842B (zh) * 2022-03-01 2022-11-04 广东智子智能技术有限公司 一种固体物料添加反应釜

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715059A (en) * 1971-03-12 1973-02-06 Cutler Hammer Inc Agitator assembly for particulate material hopper
US3964892A (en) * 1975-05-12 1976-06-22 Ferro Corporation Apparatus for advancing particulate material
US3980460A (en) * 1974-05-02 1976-09-14 Owens-Corning Fiberglas Corporation Feeder for glass melting furnaces
US4142880A (en) * 1977-12-29 1979-03-06 Johns-Manville Corporation Method and apparatus for feeding a glass melting furnace
DE2801117A1 (de) * 1978-01-12 1979-07-19 Sorg Gmbh & Co Kg Glasschmelzofen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715059A (en) * 1971-03-12 1973-02-06 Cutler Hammer Inc Agitator assembly for particulate material hopper
US3980460A (en) * 1974-05-02 1976-09-14 Owens-Corning Fiberglas Corporation Feeder for glass melting furnaces
US3964892A (en) * 1975-05-12 1976-06-22 Ferro Corporation Apparatus for advancing particulate material
US4142880A (en) * 1977-12-29 1979-03-06 Johns-Manville Corporation Method and apparatus for feeding a glass melting furnace
DE2801117A1 (de) * 1978-01-12 1979-07-19 Sorg Gmbh & Co Kg Glasschmelzofen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4954034A (en) * 1984-10-05 1990-09-04 Zurn Industries, Inc. Vibratory fuel feeder for furnaces
GB2265618A (en) * 1992-03-30 1993-10-06 Pilkington Glass Ltd Glass melting
WO1998003438A1 (fr) * 1996-07-24 1998-01-29 Termo D.D., Industrija Termic^¿Nih Izolacij, S^¿Kofjaloka Procede et dispositif de renvoi de dechets metalliques dans un cubilot

Also Published As

Publication number Publication date
EP0043832A1 (fr) 1982-01-20
IT8147524A0 (it) 1981-01-07
FI67834B (fi) 1985-02-28
JPS57500064A (fr) 1982-01-14
FI810093L (fi) 1981-07-15
DE3070366D1 (en) 1985-04-25
EP0043832A4 (fr) 1982-04-29
CA1154485A (fr) 1983-09-27
FI67834C (fi) 1985-06-10
US4285713A (en) 1981-08-25
EP0043832B1 (fr) 1985-03-20
BE887048A (fr) 1981-07-13
IT1142215B (it) 1986-10-08

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