US3799445A - Vertical remote-controlled refractory gunning apparatus - Google Patents

Vertical remote-controlled refractory gunning apparatus Download PDF

Info

Publication number
US3799445A
US3799445A US00355752A US35575273A US3799445A US 3799445 A US3799445 A US 3799445A US 00355752 A US00355752 A US 00355752A US 35575273 A US35575273 A US 35575273A US 3799445 A US3799445 A US 3799445A
Authority
US
United States
Prior art keywords
conduit
set forth
nozzle
gunning
control unit
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
US00355752A
Inventor
J Marino
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.)
Pfizer Inc
Original Assignee
Pfizer Inc
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 Pfizer Inc filed Critical Pfizer Inc
Priority to US00355752A priority Critical patent/US3799445A/en
Priority to GB3936273A priority patent/GB1422749A/en
Priority to SE7403382A priority patent/SE406803B/en
Priority to NO740980A priority patent/NO137181C/en
Priority to NLAANVRAGE7403787,A priority patent/NL171625C/en
Priority to IT49451/74A priority patent/IT1004401B/en
Priority to AT240574A priority patent/AT346880B/en
Priority to AU67027/74A priority patent/AU482794B2/en
Priority to DK158574A priority patent/DK143974C/en
Priority to DE2414503A priority patent/DE2414503C2/en
Priority to LU69697A priority patent/LU69697A1/xx
Priority to CH414274A priority patent/CH590693A5/xx
Priority to BR2297/74A priority patent/BR7402297D0/en
Priority to ES424622A priority patent/ES424622A1/en
Priority to JP3338474A priority patent/JPS532602B2/ja
Priority to BE1005827A priority patent/BE812807A/en
Priority to FR7410175A priority patent/FR2227059B1/fr
Application granted granted Critical
Publication of US3799445A publication Critical patent/US3799445A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
    • F27D1/1636—Repairing linings by projecting or spraying refractory materials on the lining
    • F27D1/1642—Repairing linings by projecting or spraying refractory materials on the lining using a gunning apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/06—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 specially designed for treating the inside of hollow bodies
    • B05B13/0627—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies
    • B05B13/0636—Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies by means of rotatable spray heads or nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/14—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with oscillating elements; with intermittent operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/04—Welding for other purposes than joining, e.g. built-up welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F27B3/12—Working chambers or casings; Supports therefor

Definitions

  • ABSTRACT A vertical gunning conduit having a horizontal nozzle at its lower end is supported from a hoist above and extends into the open top of a refractory-lined vessel, such as an electric steel-making furnace, with the nozzle positioned within the vessel. Refractory materials and water are supplied to the top of the conduit through a mixing head, which is connected by a swivel coupling to the lower portion of the conduit which is rotatable about its axis.
  • An oscillating drive provided by a crank and slotted lever, is connected to the rotatable conduit through a magnetic clutch which is actuable to engage at a variable angle to control the position of the nozzle, either motionless for filling large holes, or in an oscillating path for gunning a selected portion of the vessel wall.
  • a vertical gunning conduit having a horizontal nozzle at its lower end is supportable from a hoist above the top and extending within a refractory-lined vessel, such as an electric steel-making furnace.
  • Refractory materi' als and water are supplied to the top of the conduit through a mixing head, which is connected by a swivel coupling to the lower portion of the conduit which is rotatable about its axis.
  • An oscillating drive is connected to the rotatable conduit, either directly or through a clutch which is actuable to engage at a variable angle, to control the position of the nozzle either motionless for filling large holes or in an oscillating path for gunning a selected portion of the vessel wall.
  • the oscillating drive which is provided for example by a reversible motor or crank and slotted lever, helps apply an even coating to the vessel walls.
  • FIG. 1 is a partially schematic view in elevation of one embodiment of this invention being used to spray an open-topped refractory-lined vessel, which is shown in cross-section;
  • FIG. 2 is a top plan view of the driving and mixing compartment of the embodiment shown in FIG. 1 with cover removed;
  • FIG. 3 is a cross-sectional view taken through FIG. 2 along the line 3-3;
  • FIG. 4 is a cross-sectional view taken through FIG. 2 along the line 4-4;
  • FIG. 5 is a schematic view of the oscillating drive portion of the embodiment of this invention shown in FIGS. 1-4 in one phase of operation;
  • FIG. 6 is another schematic view of the oscillating drive portion of the embodiment of this invention shown in FIGS. 1-4 in another phase of operation;
  • FIG. 7 is still another schematic view of the oscillating drive portion of the embodiment of this invention shown in FIGS. 1-4 in a third phase of operation;
  • FIG. 8 is another schematic view of the oscillating drive portion of the embodiment of this invention shown in FIGS. 1-4 in a fourth phase of operation;
  • FIG. 9 is another schematic view of the oscillating drive portion of the embodiment of this invention shown in FIGS. 1-4 in a fifth phase of operation;
  • FIG. 10 is another schematic view of the oscillating drive portion of the embodiment of this invention shown in FIGS. 1-4 in a sixth phase of operation;
  • FIG. 11 is a view in elevation of the driving and mixing compartment of another embodiment of this invention.
  • FIG. 1 Description of the Preferred! Embodiment
  • a vertical remote controlled refactory gunning apparatus 10 supported fom an overhead trolley hoist 12 above a refractory lined electric steelmaking furnace 14 whose top is removed to provide access to the interior.
  • Hoist 12 is bidirectionally movable on trolley wheels 15 along beam 16, which is traversed perpendicularly to its length by wheels 18 riding on tracks 20 secured to the overhead structure; alternatively, apparatus 10 can be supported from a separate jib crane.
  • Apparatus 10 includes a vertical conduit 22 extending from contol box 24 into the vessel and having a nozzle 26 extending from it at a substantial angle, for example at right angles, toward refractory lined wall 28 of furnace 14.
  • Nozzle 26 is for example of the type shown in U. S. Pat. No. 3,392,921.
  • Nozzle 26 is herein shown directed at a substantially right angle to conduit 22, but this may be varied according to special requirements.
  • Conduit 30 supplies water to control box 24 from hydrant 32.
  • Conduit 34 supplies a dry refractory mixture from supply tank or so-called refractory gun 36, which is manually replenished through its open top.
  • Conduits 30 and 34 are suspended in sling 40 from cab 42 of hoist 12 to clear the upper corners of furnace 14.
  • a spray pattern 44 is directed at wall 28 from nozzle 26 in a manner later described in detail.
  • control box 24 Details of control box 24 and its contents are shown in FIGS. 2-4.
  • Vertical conduit 22 extends into the bottom of control box 24 through thrust bearing 46 within which it is rotatable and which supports its weight.
  • Lower clutch plate 48 of magnetic clutch 50 is secured to conduit 22 and the drive portion 52 of clutch 50 supported rotatably mounted upon conduit 22 below swivel coupling 54 which joins rotatable conduit 22 to refractory supply conduit 34 suppo'ted in sleeve mounting bracket 56.
  • Refractory supply conduit 34 is connected to swivel coupling 54 by water supply Tee 58 having a connecting nipple 60 to which water supply conduit 30 is connected, thus comprising a mixing head.
  • Electric drive motor 62 having a geared reducing head 64 rotates crank disc 66 in a horizontal plane.
  • Crank pin 68 on disc 66 is inserted in longitudinal slot 70 within lever 72 which is secured for exgmle by welding to collar 73 connected to the drive example 52 of clutch 50.
  • Rotation of crank disc 66 accordingly oscillates drive portion 52 of clutch 50 in a manner later described.
  • FIGS. 5-10 show various angular phases of lever 72 and nozzle 26 in the operation of the oscillating drive 84 provided by the aforementioned driving components.
  • Magnetic clutch 50 is accordingly actuable to engage at variable angles to control the oscillation of lever 72 and nozzle 26 in order to traverse the oscillating path of nozzle 26 completely around the interior of furnace 14.
  • Clutch 50 is actuated by a manual switch by an operator to disengage the clutch at one extremity of travel of lever 72 and pick it up at the other extremity of travel in order to successively traverse in arcuate path of nozzle 26 around the entire interior of furnace 14.
  • FIG. 5 shows lever 72 in an illustrative initial disposition relative to nozzle 26 in which they are, for example, in straight line relationship with each other. Nozzle 26 therefore swings in an oscillating path, for example of 45", which is centered upon the longitudinal centerline of lever 72.
  • the crank and slotted lever connection of the rotating motion of motor 62 and gear drive 64 to lever 72 provides a sine wave motion.
  • Wall 8 has a diameter of for example approximately 16 to 20 feet whereas, the axis of rotation 90 of nozzle 26 is for example positioned at from two feet from the wall to the center of the vessel.
  • lever 72 and nozzle 26 are in sucessive FIGS. 5-10.
  • lever 72 and nozzle 26 are in line with each other at the extremity of angle A1.
  • the aligned lever and nozzle have returned to the center of angle A2 the same as in FIG. 5.
  • crank pin 68 is adjacent nozzle 26, whereas in FIG. 5 it is remote from nozzle 26.
  • aligned lever 72 and nozzle 26 are at the extremity of angle A3.
  • FIGS. 9 and 10 The rotation of nozzle 26 with respect to lever 72 is illustrated in FIGS. 9 and 10.
  • magnetic clutch 50 is inactivated when lever 72 is at the A3 position shown in solid outline and lever 72 then rotates to the Al position shown in phantom outline while nozzle 26 remains in the A3 position.
  • Clutch 50 is then reactivated to reengage lever 72 and nozzle 26 in the last mentioned angular orientation which is maintained in FIG. 10.
  • nozzle 26 is being oscillated throughout a new angle B which is rotated 45 from former angle A with nozzle 26 and lever 72 in a 135 disposition relative to each other about axis 90.
  • Clutch 50 is successively deactivated and reactivated while lever 72 is traversed from one extremity of travel to the other to progressively index nozzle 26 in full rotation about its axis. This permits the entire interior wall 28 of furnace 14 to be systematically gunned with refractory material.
  • Magnetic clutch 50 also permits a deep hole in any particular area to be filled by stopping the nozzle and directing it continuously at the hole for a sufficient period of time to fill it.
  • Remote actuation of apparatus is guided by an operator by visual inspection and control either through a viewing port or door 92 in the furnace wall, from a remote elevated platform or possibly from cab 42 of hoist 12.
  • Apparatus 10 may be used to gun any effective mixture of a dry refractory mixture with water.
  • One effective type of mixture is a high silica content mixture. Others would include high alumina or high magnesia content mixtures.
  • the material may be sprayed while the furnace is hot or cold. The most effective thickness will be dictated by the particular local condition. It will often be between one and four inches for each gunning operation, but it may sometimes range from less than one inch to in excess of 6 inches.
  • the hot gunning operation permitted by this remote controlled unit is highly advantageous because it takes about 6 or 8 hours to cool a furnace sufficiently to gun it with directly operated apparatus.
  • the positional flexibility afforded by this remotely operated unit highly facilitates direction of the coating mixture at any spot or area of the furnace with highly accurate control from a remote station.
  • Water control valve 57 is interposed in conduit 30 to maintain a substantially constant quantity of water flowing into mixing Tee 58.
  • Valve 57 is of any suitable available type obtainable from various control valve manufacturers. It insures correct proportioning of water and dry refractory composition at mixing Tee 58 and nozzle 26.
  • FIG. 11 shows a modification 10 A of the embodiment illustrated in FIG. 3, which incorporates a direct drive in place of the clutch drive.
  • Coupling gear 91 A is secured to conduit 22 A in place of the magnetic clutch and is driven by coupling drive gear 93 A attached to air motor 94 A through sprocket chain 92 A.
  • Air motor 94 A is of the reversing type and its rotational direction is controlled by a solenoid valve 95 A and timer 96 A.
  • Timer 96 A determines the period during which the motor 94 A turns in a given direction before reversing.
  • Timer 96 A is set to a predetermined setting, e.g., 5 seconds.
  • Timer 96 A actuates the solenoid to switch the air supply to the opposite port of motor 94 A, causing it to reverse its directon of rotation.
  • the length of arc traversed by the nozzle may thus be varied by varying the timer setting.
  • An electrical override (not shown) over timer 96 A is preferably provided so that nozzle movement can be manually controlled when desired. Air flow to motor 94 A may also be varied to vary the drive speed.
  • Timer 96 A and its override may be positioned remote from control box 24 A to facilitate actuation by an operator.
  • a vertical refractory gunning apparatus comprising a vertical gunning conduit, a control unit, bearing means rotatably connecting and mounting said vertical gunning conduit from said control unit, an oscillating drive in said control unit, a drive coupling in said control unit connecting said oscillating drive to said vertical gunning conduit supply conduits entering said control unit for supplying refractory material and water, a mixing head in said control unit to which said supply conduits are connected, a swivel coupling connecting said mixing head to said vertical gunning conduit for providing a mixture of water and refractory to said nozzle, and actuating means connected to said oscillating drive for selectively actuating it to control the angular orientation of said nozzle whereby said nozzle is angularly oriented about said vertical gunning conduit in stationary and oscillating modes of operation.
  • crank comprises a rotating disc and crank pin.
  • actuating means is disposed remotely from said control 9.

Abstract

A vertical gunning conduit having a horizontal nozzle at its lower end is supported from a hoist above and extends into the open top of a refractory-lined vessel, such as an electric steelmaking furnace, with the nozzle positioned within the vessel. Refractory materials and water are supplied to the top of the conduit through a mixing head, which is connected by a swivel coupling to the lower portion of the conduit which is rotatable about its axis. An oscillating drive provided by a crank and slotted lever, is connected to the rotatable conduit through a magnetic clutch which is actuable to engage at a variable angle to control the position of the nozzle, either motionless for filling large holes, or in an oscillating path for gunning a selected portion of the vessel wall.

Description

United States Patent 1 Marine [451 Mar. 26, 1974' [75] Inventor: Joseph J. Marino, Ridgefield, Conn.
[73] Assignee: Pfizer Inc., New York, NY.
[22] Filed: Apr. 30, 1973 [21] Appl. No.: 355,752
[52] US. Cl 239/242, 118/317, 239/210, 239/227, 239/255, 239/264 [51] Int. Cl B051) 3/14 [58] Field of Search 239/225, 227, 264, 210, 239/242, 255, 187, 132.3; 118/254, 317
[56] References Cited UNITED STATES PATENTS 3,473,737 10/1969 Bowman 239/187 3,396,855 8/1968 Demaison...,. 118/317 X 3,351,289 11/1967 Demaison 239/1323 2,868,163 l/l959 Boyd 118/317 2,388,517 11/1945 Bailey et a1. 239/225 X FOREIGN PATENTS OR APPLICATIONS 1,176,978 l/l97O Great Britain 239/242 Primary ExaminerLloyd L. King Assistant ExaminerAndres Kashnikow Attorney, Agent, or Firm-Connolly and Hutz [5 7] ABSTRACT A vertical gunning conduit having a horizontal nozzle at its lower end is supported from a hoist above and extends into the open top of a refractory-lined vessel, such as an electric steel-making furnace, with the nozzle positioned within the vessel. Refractory materials and water are supplied to the top of the conduit through a mixing head, which is connected by a swivel coupling to the lower portion of the conduit which is rotatable about its axis. An oscillating drive provided by a crank and slotted lever, is connected to the rotatable conduit through a magnetic clutch which is actuable to engage at a variable angle to control the position of the nozzle, either motionless for filling large holes, or in an oscillating path for gunning a selected portion of the vessel wall.
10 Claims, 11 Drawing Figures VERTICAL REMOTE-CONTROLLED REFRACTORY GUNNING APPARATUS Background of the Invention Maintenance of the refractory linings in vertical refractory lined vessels, such as an electric steel-making furnace, is complicated by the necessity to insert the gunning nozzle through the top of the vessel and direct it at the portions of the vessel which require repair of maintenance. Existing gunning apparatus, such as described in U. S. Pat. Nos. 3,351,289, 3,396,855 and 3,473,737, is designed for direct operation within movable steel-making furnaces such as BOFS and is therefore not as efficient for remote operation through the top of a stationary furnace. An object of this invention is to provide a vertically movable refractory gunning apparatus which can be remotely directed and controlled to selectively gun any and all portions of vertical refractory lined vessels.
Summary of the Invention A vertical gunning conduit having a horizontal nozzle at its lower end is supportable from a hoist above the top and extending within a refractory-lined vessel, such as an electric steel-making furnace. Refractory materi' als and water are supplied to the top of the conduit through a mixing head, which is connected by a swivel coupling to the lower portion of the conduit which is rotatable about its axis. An oscillating drive is connected to the rotatable conduit, either directly or through a clutch which is actuable to engage at a variable angle, to control the position of the nozzle either motionless for filling large holes or in an oscillating path for gunning a selected portion of the vessel wall. The oscillating drive, which is provided for example by a reversible motor or crank and slotted lever, helps apply an even coating to the vessel walls.
Brief Description of the Drawings Novel features and advantages of the present invention will become apparent to one skilled in the art from a reading of the following description in conjunction with the accompanying drawings wherein similar reference characters refer to similar parts and in which:
FIG. 1 is a partially schematic view in elevation of one embodiment of this invention being used to spray an open-topped refractory-lined vessel, which is shown in cross-section;
FIG. 2 is a top plan view of the driving and mixing compartment of the embodiment shown in FIG. 1 with cover removed;
FIG. 3 is a cross-sectional view taken through FIG. 2 along the line 3-3;
FIG. 4 is a cross-sectional view taken through FIG. 2 along the line 4-4;
FIG. 5 is a schematic view of the oscillating drive portion of the embodiment of this invention shown in FIGS. 1-4 in one phase of operation;
FIG. 6 is another schematic view of the oscillating drive portion of the embodiment of this invention shown in FIGS. 1-4 in another phase of operation;
FIG. 7 is still another schematic view of the oscillating drive portion of the embodiment of this invention shown in FIGS. 1-4 in a third phase of operation;
FIG. 8 is another schematic view of the oscillating drive portion of the embodiment of this invention shown in FIGS. 1-4 in a fourth phase of operation;
FIG. 9 is another schematic view of the oscillating drive portion of the embodiment of this invention shown in FIGS. 1-4 in a fifth phase of operation;
FIG. 10 is another schematic view of the oscillating drive portion of the embodiment of this invention shown in FIGS. 1-4 in a sixth phase of operation; and
FIG. 11 is a view in elevation of the driving and mixing compartment of another embodiment of this invention.
Description of the Preferred! Embodiment In FIG. 1 is shown a vertical remote controlled refactory gunning apparatus 10 supported fom an overhead trolley hoist 12 above a refractory lined electric steelmaking furnace 14 whose top is removed to provide access to the interior. Hoist 12 is bidirectionally movable on trolley wheels 15 along beam 16, which is traversed perpendicularly to its length by wheels 18 riding on tracks 20 secured to the overhead structure; alternatively, apparatus 10 can be supported from a separate jib crane.
Apparatus 10 includes a vertical conduit 22 extending from contol box 24 into the vessel and having a nozzle 26 extending from it at a substantial angle, for example at right angles, toward refractory lined wall 28 of furnace 14. Nozzle 26 is for example of the type shown in U. S. Pat. No. 3,392,921. Nozzle 26 is herein shown directed at a substantially right angle to conduit 22, but this may be varied according to special requirements. Conduit 30 supplies water to control box 24 from hydrant 32. Conduit 34 supplies a dry refractory mixture from supply tank or so-called refractory gun 36, which is manually replenished through its open top. Conduits 30 and 34 are suspended in sling 40 from cab 42 of hoist 12 to clear the upper corners of furnace 14. A spray pattern 44 is directed at wall 28 from nozzle 26 in a manner later described in detail.
Details of control box 24 and its contents are shown in FIGS. 2-4. Vertical conduit 22 extends into the bottom of control box 24 through thrust bearing 46 within which it is rotatable and which supports its weight. Lower clutch plate 48 of magnetic clutch 50 is secured to conduit 22 and the drive portion 52 of clutch 50 supported rotatably mounted upon conduit 22 below swivel coupling 54 which joins rotatable conduit 22 to refractory supply conduit 34 suppo'ted in sleeve mounting bracket 56. Refractory supply conduit 34 is connected to swivel coupling 54 by water supply Tee 58 having a connecting nipple 60 to which water supply conduit 30 is connected, thus comprising a mixing head.
Electric drive motor 62 having a geared reducing head 64 rotates crank disc 66 in a horizontal plane. Crank pin 68 on disc 66 is inserted in longitudinal slot 70 within lever 72 which is secured for exgmle by welding to collar 73 connected to the drive example 52 of clutch 50. Rotation of crank disc 66 accordingly oscillates drive portion 52 of clutch 50 in a manner later described.
FIGS. 5-10 show various angular phases of lever 72 and nozzle 26 in the operation of the oscillating drive 84 provided by the aforementioned driving components. Magnetic clutch 50 is accordingly actuable to engage at variable angles to control the oscillation of lever 72 and nozzle 26 in order to traverse the oscillating path of nozzle 26 completely around the interior of furnace 14. Clutch 50 is actuated by a manual switch by an operator to disengage the clutch at one extremity of travel of lever 72 and pick it up at the other extremity of travel in order to successively traverse in arcuate path of nozzle 26 around the entire interior of furnace 14.
FIG. 5 shows lever 72 in an illustrative initial disposition relative to nozzle 26 in which they are, for example, in straight line relationship with each other. Nozzle 26 therefore swings in an oscillating path, for example of 45", which is centered upon the longitudinal centerline of lever 72.
The crank and slotted lever connection of the rotating motion of motor 62 and gear drive 64 to lever 72 provides a sine wave motion. Wall 8 has a diameter of for example approximately 16 to 20 feet whereas, the axis of rotation 90 of nozzle 26 is for example positioned at from two feet from the wall to the center of the vessel.
The relative phases of oscillation of lever 72 and nozzle 26 are shown in sucessive FIGS. 5-10. In FIG. 6 lever 72 and nozzle 26 are in line with each other at the extremity of angle A1. In FIG. 7 the aligned lever and nozzle have returned to the center of angle A2 the same as in FIG. 5. In FIG. 7, however, crank pin 68 is adjacent nozzle 26, whereas in FIG. 5 it is remote from nozzle 26. In FIG. 8 aligned lever 72 and nozzle 26 are at the extremity of angle A3.
The rotation of nozzle 26 with respect to lever 72 is illustrated in FIGS. 9 and 10. In FIG. 9, magnetic clutch 50 is inactivated when lever 72 is at the A3 position shown in solid outline and lever 72 then rotates to the Al position shown in phantom outline while nozzle 26 remains in the A3 position. Clutch 50 is then reactivated to reengage lever 72 and nozzle 26 in the last mentioned angular orientation which is maintained in FIG. 10.
In FIG. 10, nozzle 26 is being oscillated throughout a new angle B which is rotated 45 from former angle A with nozzle 26 and lever 72 in a 135 disposition relative to each other about axis 90. Clutch 50 is successively deactivated and reactivated while lever 72 is traversed from one extremity of travel to the other to progressively index nozzle 26 in full rotation about its axis. This permits the entire interior wall 28 of furnace 14 to be systematically gunned with refractory material. Magnetic clutch 50 also permits a deep hole in any particular area to be filled by stopping the nozzle and directing it continuously at the hole for a sufficient period of time to fill it. Remote actuation of apparatus is guided by an operator by visual inspection and control either through a viewing port or door 92 in the furnace wall, from a remote elevated platform or possibly from cab 42 of hoist 12.
Apparatus 10 may be used to gun any effective mixture of a dry refractory mixture with water. One effective type of mixture is a high silica content mixture. Others would include high alumina or high magnesia content mixtures. The material may be sprayed while the furnace is hot or cold. The most effective thickness will be dictated by the particular local condition. It will often be between one and four inches for each gunning operation, but it may sometimes range from less than one inch to in excess of 6 inches. The hot gunning operation permitted by this remote controlled unit is highly advantageous because it takes about 6 or 8 hours to cool a furnace sufficiently to gun it with directly operated apparatus. The positional flexibility afforded by this remotely operated unit highly facilitates direction of the coating mixture at any spot or area of the furnace with highly accurate control from a remote station.
Water control valve 57 is interposed in conduit 30 to maintain a substantially constant quantity of water flowing into mixing Tee 58. Valve 57 is of any suitable available type obtainable from various control valve manufacturers. It insures correct proportioning of water and dry refractory composition at mixing Tee 58 and nozzle 26.
FIG. 11 shows a modification 10 A of the embodiment illustrated in FIG. 3, which incorporates a direct drive in place of the clutch drive. Coupling gear 91 A is secured to conduit 22 A in place of the magnetic clutch and is driven by coupling drive gear 93 A attached to air motor 94 A through sprocket chain 92 A. Air motor 94 A is of the reversing type and its rotational direction is controlled by a solenoid valve 95 A and timer 96 A. Timer 96 A determines the period during which the motor 94 A turns in a given direction before reversing. Timer 96 A is set to a predetermined setting, e.g., 5 seconds. Every 5 seconds the Timer 96 A actuates the solenoid to switch the air supply to the opposite port of motor 94 A, causing it to reverse its directon of rotation. The length of arc traversed by the nozzle may thus be varied by varying the timer setting. An electrical override (not shown) over timer 96 A is preferably provided so that nozzle movement can be manually controlled when desired. Air flow to motor 94 A may also be varied to vary the drive speed. Timer 96 A and its override may be positioned remote from control box 24 A to facilitate actuation by an operator.
I claim:
1. A vertical refractory gunning apparatus comprising a vertical gunning conduit, a control unit, bearing means rotatably connecting and mounting said vertical gunning conduit from said control unit, an oscillating drive in said control unit, a drive coupling in said control unit connecting said oscillating drive to said vertical gunning conduit supply conduits entering said control unit for supplying refractory material and water, a mixing head in said control unit to which said supply conduits are connected, a swivel coupling connecting said mixing head to said vertical gunning conduit for providing a mixture of water and refractory to said nozzle, and actuating means connected to said oscillating drive for selectively actuating it to control the angular orientation of said nozzle whereby said nozzle is angularly oriented about said vertical gunning conduit in stationary and oscillating modes of operation.
2. An apparatus as set forth in claim 1 wherein said drive coupling is a clutch.
3. An apparatus as set forth in claim 2 wherein said oscillating drive includes a crank and slotted lever linkage.
4. An apparatus as set forth in claim 3 wherein said crank comprises a rotating disc and crank pin.
5. An apparatus as set forth in claim 3 wherein said slotted lever is connected to part of said clutch.
6. An apparatus as set forth in claim 2 wherein said clutch is a magnetic clutch, and said actuating means is an electric switching device.
7. An apparatus as set forth in claim 1 wherein said oscillating drive comprises a reversible motor.
8. An apparatus as set forth in claim 7 wherein said 10. An apparatus as set forth in claim 1 wherein said reversible motor comprises an air driven motor. actuating means is disposed remotely from said control 9. An apparatus as set forth in claim 1 wherein said unit and vertical gunning conduit. control unit is disposed within a control casing.

Claims (10)

1. A vertical refractory gunning apparatus comprising a vertical gunning conduit, a control unit, bearing means rotatably connecting and mounting said vertical gunning conduit from said control unit, an oscillating drive in said control unit, a drive coupling in said control unit connecting said oscillating drive to said vertical gunning conduit supply conduits entering said control unit for supplying refractory material and water, a mixing head in said control unit to which said supply conduits are connected, a swivel coupling connecting said mixing head to said vertical gunning conduit for providing a mixture of water and refractory to said nozzle, and actuating means connected to said oscillating drive for selectively actuating it to control the angular orientation of said nozzle whereby said nozzle is angularly oriented about said vertical gunning conduit in stationary and oscillating modes of operation.
2. An apparatus as set forth in claim 1 wherein said drive coupling is a clutch.
3. An apparatus as set forth in claim 2 wherein said oscillating drive includes a crank and slotted lever linkage.
4. An apparatus as set forth in claim 3 wherein said crank comprises a rotating disc and crank pin.
5. An apparatus as set forth in claim 3 wherein said slotted lever is connected to part of said clutch.
6. An apparatus as set forth in claim 2 wherein said clutch is a magnetic clutch, and said actuating means is an electric switching device.
7. An apparatus as set forth in claim 1 wherein said oscillating drive comprises a reversible motor.
8. An apparatus as set forth in claim 7 wherein said reversible motor comprises an air driven motor.
9. An apparatus as set forth in claim 1 wherein said control unit is disposed within a control casing.
10. An apparatus as set forth in claim 1 wherein said actuating means is disposed remotely from said control unit and vertical gunning conduit.
US00355752A 1973-04-30 1973-04-30 Vertical remote-controlled refractory gunning apparatus Expired - Lifetime US3799445A (en)

Priority Applications (17)

Application Number Priority Date Filing Date Title
US00355752A US3799445A (en) 1973-04-30 1973-04-30 Vertical remote-controlled refractory gunning apparatus
GB3936273A GB1422749A (en) 1973-04-30 1973-08-20 Refractory gunning apparatus
SE7403382A SE406803B (en) 1973-04-30 1974-03-13 DEVICE FOR SPRAYING MELTING MATERIAL FOR APPLYING WATER SUCH MATERIAL ON WITH REPLACED MATERIAL LINED VERTICAL WALLS AT AN ELECTRIC STEEL MANUFACTURING OVEN OR OTHER SIMILAR BOILER
NO740980A NO137181C (en) 1973-04-30 1974-03-19 SPRAYER FOR FIREFIGHTING MATERIAL
NLAANVRAGE7403787,A NL171625C (en) 1973-04-30 1974-03-20 DEVICE WITH A SWIVELY NOZZLE FOR APPLICATING FIRE-PROOF MATERIAL TO A WALL.
IT49451/74A IT1004401B (en) 1973-04-30 1974-03-21 APPLIANCE FOR SPRAYING REFRACTORY MATERIAL UMI DO ON VERTICAL WALLS OF OVENS AND SIMILAR COVERED WITH REPRATTARIO
DE2414503A DE2414503C2 (en) 1973-04-30 1974-03-22 Device for applying a heat-resistant material
DK158574A DK143974C (en) 1973-04-30 1974-03-22 APPLICATION FOR APPLICATION OF A WETTY ILLUSTRATED MATERIAL TO A RELATED WALL IN AN ELECTROSTA OVEN
AT240574A AT346880B (en) 1973-04-30 1974-03-22 DEVICE FOR APPLYING A HEAT-RESISTANT MATERIAL
AU67027/74A AU482794B2 (en) 1973-04-30 1974-03-22 Refractory gunning apparatus
CH414274A CH590693A5 (en) 1973-04-30 1974-03-25
BR2297/74A BR7402297D0 (en) 1973-04-30 1974-03-25 REFRACTORY MATERIAL ASPERSION APPLIANCE
LU69697A LU69697A1 (en) 1973-04-30 1974-03-25
ES424622A ES424622A1 (en) 1973-04-30 1974-03-25 Vertical remote-controlled refractory gunning apparatus
JP3338474A JPS532602B2 (en) 1973-04-30 1974-03-25
BE1005827A BE812807A (en) 1973-04-30 1974-03-25 REFRACTORY MATERIAL PROJECTION APPARATUS
FR7410175A FR2227059B1 (en) 1973-04-30 1974-03-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00355752A US3799445A (en) 1973-04-30 1973-04-30 Vertical remote-controlled refractory gunning apparatus

Publications (1)

Publication Number Publication Date
US3799445A true US3799445A (en) 1974-03-26

Family

ID=23398696

Family Applications (1)

Application Number Title Priority Date Filing Date
US00355752A Expired - Lifetime US3799445A (en) 1973-04-30 1973-04-30 Vertical remote-controlled refractory gunning apparatus

Country Status (16)

Country Link
US (1) US3799445A (en)
JP (1) JPS532602B2 (en)
AT (1) AT346880B (en)
BE (1) BE812807A (en)
BR (1) BR7402297D0 (en)
CH (1) CH590693A5 (en)
DE (1) DE2414503C2 (en)
DK (1) DK143974C (en)
ES (1) ES424622A1 (en)
FR (1) FR2227059B1 (en)
GB (1) GB1422749A (en)
IT (1) IT1004401B (en)
LU (1) LU69697A1 (en)
NL (1) NL171625C (en)
NO (1) NO137181C (en)
SE (1) SE406803B (en)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3861168A (en) * 1973-09-17 1975-01-21 Union Ice Company Carbon dioxide cooling machine
US3917170A (en) * 1974-07-19 1975-11-04 Quigley Co Mobile refractory gunning apparatus
US3973730A (en) * 1975-06-25 1976-08-10 John David Johnson Apparatus for applying refractory coating to the roof linings of electric arc furnaces
US4107001A (en) * 1977-08-12 1978-08-15 Koppers Company, Inc. High pressure water cleaner for ascension pipes
US4114552A (en) * 1972-04-24 1978-09-19 Sigmund Lance Ross Cryothermal manipulation of petroleum
US4150176A (en) * 1975-02-26 1979-04-17 Martin & Pagenstecher Gmbh Method and device for production of refractory lining of a tubular vessel
US4167246A (en) * 1977-11-21 1979-09-11 J. G. Spin-L, Inc. Apparatus for spraying refractory lining
US4181258A (en) * 1977-03-23 1980-01-01 Quigley Company, Inc. Sprayer for repairing refractory lining
US4211367A (en) * 1977-03-23 1980-07-08 Bmi, Inc. Gunning apparatus for in situ spraying of refractory material
US4272020A (en) * 1978-08-16 1981-06-09 Bmi Inc. Gunning apparatus for in situ spraying of refractory material
US4272018A (en) * 1978-08-04 1981-06-09 Southern Refractories, Inc. Apparatus and method for spraying refractory material
US4301998A (en) * 1980-04-25 1981-11-24 Pfizer Inc. Vertical gunning apparatus with television monitor
EP0041932A1 (en) * 1980-06-06 1981-12-16 Svenska Silikaverken Ab Apparatus for spraying lining
US4779798A (en) * 1987-05-07 1988-10-25 National Refractories & Minerals Corporation Gunning apparatus
US4901985A (en) * 1988-11-10 1990-02-20 Magneco/Metrel, Inc. Apparatus for spraying refractory lining
US5178329A (en) * 1989-05-05 1993-01-12 Quigley Inc. Remote controlled refractory gunning apparatus
US5203842A (en) * 1989-03-17 1993-04-20 Edi Mark Nozzle device for a high-pressure liquid jet
US5368459A (en) * 1992-03-05 1994-11-29 Veitscher Magnesitwerke-Actien-Gesellschaft Device for preparing and feeding a monolithic ceramic mass into a metallurgical melting vessel
US5415350A (en) * 1993-03-06 1995-05-16 Goldstar Co., Ltd. Water spraying device for tableware washer
US5419922A (en) * 1994-03-15 1995-05-30 Bmi, Inc. Method and apparatus for repairing the refractory lining of a refractory vessel
US20030190411A1 (en) * 2002-04-03 2003-10-09 Lear Corporation Applicator and method for in-mold coating
WO2008153982A1 (en) * 2007-06-07 2008-12-18 Specialty Minerals (Michigan) Inc. Apparatus and method for the applying of refractory material
US20150300116A1 (en) * 2013-01-21 2015-10-22 Metzke Pty Ltd Drill sample particle distributor
CN109141054A (en) * 2018-09-26 2019-01-04 马鞍山钢铁股份有限公司 A kind of rotatable fuel gas ejecting device
CN111389616A (en) * 2020-05-09 2020-07-10 徐国华 Circuit board spraying device

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5817734B2 (en) * 1975-01-28 1983-04-09 帝人株式会社 Sodia aryl terephthalate
JPS522813A (en) * 1975-06-24 1977-01-10 Kurosaki Refract Co Ltd Method of repairing reaction furnaces
JPS527819U (en) * 1975-07-03 1977-01-20
JPS5214993A (en) * 1975-07-28 1977-02-04 Showa Denko Kk Improved alumina sintered grain
JPS585917Y2 (en) * 1976-03-10 1983-02-01 新日本製鐵株式会社 Castable refractory lining equipment
JPS5756154Y2 (en) * 1976-11-16 1982-12-03
JPS6024161B2 (en) * 1977-08-01 1985-06-11 新日本製鐵株式会社 How to repair damaged blast furnace walls
DE2848928C2 (en) * 1978-11-08 1983-04-28 VELCO Gesellschaft für Förder- und Silo-Anlagen mbH, 5620 Velbert Device for repairing the lining of melting furnaces, ladles or the like.
JPS5924349B2 (en) * 1979-04-28 1984-06-08 黒崎窯業株式会社 Furnace repair equipment in which a vertical spray pipe passes through a traveling trolley
JPS57125170U (en) * 1981-01-28 1982-08-04
GB2119679B (en) * 1982-05-11 1987-03-04 Donald Graham Brown Device for performing surface operations
EP0123758A1 (en) * 1983-05-02 1984-11-07 Aikoh Co. Ltd. Method for the gunning of refractories
SE451001B (en) * 1983-09-13 1987-08-24 Gunnar Broms SET AND DEVICE FOR PREPARATION OF CASTLE CHARGERS
GB8616911D0 (en) * 1986-07-11 1986-08-20 Barnes Engineers Ltd E P Spraying of refractory lining material
EP4056418A1 (en) 2021-03-09 2022-09-14 Hiab AB Hooklift arrangement, and method of a hooklift arrangement

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2388517A (en) * 1943-03-06 1945-11-06 Devilbiss Co Spray coating apparatus
US2868163A (en) * 1954-05-06 1959-01-13 Gen Electric Apparatus for coating cavities
US3351289A (en) * 1965-05-06 1967-11-07 Quigley Co Apparatus for applying a protective refractory coating to the refractory linings of basic oxygen furnaces
US3396855A (en) * 1965-10-01 1968-08-13 Quigley Co Apparatus for use in applying refractory coatings to refractory linings of small basic oxygen furnaces
US3473737A (en) * 1966-03-09 1969-10-21 Kaiser Aluminium Chem Corp Apparatus for gunning refractory material having adjustable nozzle positioning means
GB1176978A (en) * 1967-10-30 1970-01-07 Hozelock Ltd Improvements in or relating to Oscillating Means, for example for Lawn Sprinklers

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1056213A (en) * 1964-03-13 1967-01-25 Refractory & Insulation Corp Method of coating furnace surfaces
NL139194B (en) * 1969-10-28 1973-06-15 Koninklijke Hoogovens En Staal METHOD AND DEVICE FOR THE LOCAL REPAIR OF THE FIREPROOF INNER WALL OF A METALLURGIC BARREL.
DE2041639C3 (en) * 1970-08-21 1973-10-11 Wostotschnyj Ni I Pi Ogneuporn Devices for applying powdery material to formwork or to the surface of facilities

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2388517A (en) * 1943-03-06 1945-11-06 Devilbiss Co Spray coating apparatus
US2868163A (en) * 1954-05-06 1959-01-13 Gen Electric Apparatus for coating cavities
US3351289A (en) * 1965-05-06 1967-11-07 Quigley Co Apparatus for applying a protective refractory coating to the refractory linings of basic oxygen furnaces
US3396855A (en) * 1965-10-01 1968-08-13 Quigley Co Apparatus for use in applying refractory coatings to refractory linings of small basic oxygen furnaces
US3473737A (en) * 1966-03-09 1969-10-21 Kaiser Aluminium Chem Corp Apparatus for gunning refractory material having adjustable nozzle positioning means
GB1176978A (en) * 1967-10-30 1970-01-07 Hozelock Ltd Improvements in or relating to Oscillating Means, for example for Lawn Sprinklers

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4114552A (en) * 1972-04-24 1978-09-19 Sigmund Lance Ross Cryothermal manipulation of petroleum
US3861168A (en) * 1973-09-17 1975-01-21 Union Ice Company Carbon dioxide cooling machine
US3917170A (en) * 1974-07-19 1975-11-04 Quigley Co Mobile refractory gunning apparatus
US4150176A (en) * 1975-02-26 1979-04-17 Martin & Pagenstecher Gmbh Method and device for production of refractory lining of a tubular vessel
US3973730A (en) * 1975-06-25 1976-08-10 John David Johnson Apparatus for applying refractory coating to the roof linings of electric arc furnaces
US4211367A (en) * 1977-03-23 1980-07-08 Bmi, Inc. Gunning apparatus for in situ spraying of refractory material
US4181258A (en) * 1977-03-23 1980-01-01 Quigley Company, Inc. Sprayer for repairing refractory lining
US4107001A (en) * 1977-08-12 1978-08-15 Koppers Company, Inc. High pressure water cleaner for ascension pipes
US4167246A (en) * 1977-11-21 1979-09-11 J. G. Spin-L, Inc. Apparatus for spraying refractory lining
US4272018A (en) * 1978-08-04 1981-06-09 Southern Refractories, Inc. Apparatus and method for spraying refractory material
US4272020A (en) * 1978-08-16 1981-06-09 Bmi Inc. Gunning apparatus for in situ spraying of refractory material
US4301998A (en) * 1980-04-25 1981-11-24 Pfizer Inc. Vertical gunning apparatus with television monitor
EP0041932A1 (en) * 1980-06-06 1981-12-16 Svenska Silikaverken Ab Apparatus for spraying lining
US4779798A (en) * 1987-05-07 1988-10-25 National Refractories & Minerals Corporation Gunning apparatus
US4901985A (en) * 1988-11-10 1990-02-20 Magneco/Metrel, Inc. Apparatus for spraying refractory lining
US5203842A (en) * 1989-03-17 1993-04-20 Edi Mark Nozzle device for a high-pressure liquid jet
US5178329A (en) * 1989-05-05 1993-01-12 Quigley Inc. Remote controlled refractory gunning apparatus
US5368459A (en) * 1992-03-05 1994-11-29 Veitscher Magnesitwerke-Actien-Gesellschaft Device for preparing and feeding a monolithic ceramic mass into a metallurgical melting vessel
US5415350A (en) * 1993-03-06 1995-05-16 Goldstar Co., Ltd. Water spraying device for tableware washer
US5419922A (en) * 1994-03-15 1995-05-30 Bmi, Inc. Method and apparatus for repairing the refractory lining of a refractory vessel
US5601051A (en) * 1994-03-15 1997-02-11 Bmi, Inc. Apparatus for repairing the refractory lining of a refractory vessel
US20030190411A1 (en) * 2002-04-03 2003-10-09 Lear Corporation Applicator and method for in-mold coating
US6902758B2 (en) * 2002-04-03 2005-06-07 Lear Corporation Applicator and method for in-mold coating
US20050126478A1 (en) * 2002-04-03 2005-06-16 Lear Corporation Applicator and method for in-mold coating
WO2008153982A1 (en) * 2007-06-07 2008-12-18 Specialty Minerals (Michigan) Inc. Apparatus and method for the applying of refractory material
EP2167238A1 (en) * 2007-06-07 2010-03-31 Specialty Minerals (Michigan) Inc. Apparatus and method for the applying of refractory material
US20100196598A1 (en) * 2007-06-07 2010-08-05 Speciality Minerals (Michigan) Inc. Apparatus and method for the applying of refractory material
EP2167238A4 (en) * 2007-06-07 2011-06-22 Specialty Minerals Michigan Apparatus and method for the applying of refractory material
US8881673B2 (en) * 2007-06-07 2014-11-11 Specialty Minerals (Michigan) Inc. Apparatus and method for the applying of refractory material
US20150300116A1 (en) * 2013-01-21 2015-10-22 Metzke Pty Ltd Drill sample particle distributor
US9752402B2 (en) * 2013-01-21 2017-09-05 Metzke Pty Ltd Drill sample particle distributor
CN109141054A (en) * 2018-09-26 2019-01-04 马鞍山钢铁股份有限公司 A kind of rotatable fuel gas ejecting device
CN111389616A (en) * 2020-05-09 2020-07-10 徐国华 Circuit board spraying device
CN111389616B (en) * 2020-05-09 2021-06-04 陈恩义 Circuit board spraying device

Also Published As

Publication number Publication date
AT346880B (en) 1978-11-27
CH590693A5 (en) 1977-08-15
ATA240574A (en) 1978-04-15
NO137181B (en) 1977-10-10
NL7403787A (en) 1974-11-01
DK143974C (en) 1982-04-26
LU69697A1 (en) 1974-10-17
AU6702774A (en) 1975-09-25
NL171625C (en) 1983-04-18
FR2227059B1 (en) 1977-09-30
NO137181C (en) 1978-01-18
DK143974B (en) 1981-11-09
BE812807A (en) 1974-09-25
NO740980L (en) 1974-10-31
GB1422749A (en) 1976-01-28
FR2227059A1 (en) 1974-11-22
JPS532602B2 (en) 1978-01-30
SE406803B (en) 1979-02-26
JPS502606A (en) 1975-01-11
NL171625B (en) 1982-11-16
ES424622A1 (en) 1976-06-01
BR7402297D0 (en) 1974-11-19
DE2414503C2 (en) 1982-06-16
IT1004401B (en) 1976-07-10
DE2414503A1 (en) 1974-11-14

Similar Documents

Publication Publication Date Title
US3799445A (en) Vertical remote-controlled refractory gunning apparatus
JPS5934951B2 (en) Mobile fireproof coating equipment
US4272020A (en) Gunning apparatus for in situ spraying of refractory material
US4163546A (en) Apparatus for applying granular refractory material to surfaces
US4099708A (en) Apparatus for applying granular refractory material to surfaces
CA1313304C (en) Apparatus for spraying refractory lining
US4860422A (en) Rebuilding of the stack, bosh and hearth of a blast furnace using a remote controlled refractory gunning device
EP0976478B1 (en) Apparatus for depositing or pouring monolithic refractory
US4181258A (en) Sprayer for repairing refractory lining
KR800000423B1 (en) Refractory gunning apparatus
JPH0825023A (en) Casting material filling device to bottom part of ladle
KR100289873B1 (en) Apparatus for repairing fireproof lining of metallurgy containers
US4801096A (en) Automatic gunning apparatus with detachably mounted gunning pipe
KR830000121B1 (en) Fire Resistant Interior Spray Gun
JPS5826517B2 (en) Spray repair equipment for fireproof lined containers
US5178329A (en) Remote controlled refractory gunning apparatus
JPS5914043Y2 (en) automatic water heater
JP2556045Y2 (en) Tundish utility feeder for continuous casting machine
SU1082559A1 (en) Apparatus for guniting metallurgical ladles
JPS584272B2 (en) Fireproof lining spray repair equipment
US3057519A (en) Mixing and dispensing apparatus for hot patching material
JPS6237114Y2 (en)
JPS6237115Y2 (en)
JPS6159187B2 (en)
JPH0311291A (en) Gun spray device for vertical refractory material