JPH0772673B2 - Refractory lining dismantling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is directed to a refractory lining applied to a molten metal container used in a steelmaking industry, a nonferrous metallurgy industry, etc. by injecting high pressure water. The present invention relates to a refractory lining dismantling device that peels and dismantles a required portion by a cutting force.

(Prior Art) For example, as a molten metal container to which a refractory lining is applied, there are tapping gutters, mixed piggy cars, converters, ladles, tundish, etc. in the steel industry. These pig iron gutters,
Since the refractory lining is required to be repaired in a relatively short time in order to directly contact the hot metal and molten steel at high temperature, this repair is repeated. Most refractory linings consist of two layers: permanent or structural (permanent lining) and lining (work lining). Normally, only the lining is peeled and dismantled, and a new refractory lining is repaired. ing.

In this peeling and disassembling work, for example, JP-A-58-11379
In the publication, a method of injecting a statically crushed material into a refractory lining and peeling and dismantling it is proposed. In addition, 58
Japanese Patent No. 79314 proposes to peel and dismantle the refractory lining by reciprocating motion of a hammer that drives a piston with compressed air.

(Problems to be Solved by the Invention) However, in the former case described above, there are problems that the peeling and disassembling / repairing speed is slow and the running cost becomes high. Further, in the latter case, there is a problem that an excessive amount of repair material is required because it is impossible to peel off only a necessary area of the surface layer. In addition to this, there is a problem that noise and vibration are large and a lot of dust is generated to deteriorate the working environment.

The present invention solves such problems, and a refractory lining that requires repair over a required layer thickness regardless of the surface condition, has a high repair speed and a running cost without deteriorating the working environment. It is an object of the present invention to provide a refractory lining dismantling device which can be kept low and can be efficiently separated and disassembled.

(Means for Solving the Problem) In order to achieve the above-mentioned object, a refractory lining disassembling apparatus is a refractory lining that disassembles and dismantles a required portion by a cutting force by jetting high-pressure water. In the dismantling apparatus, (a) a movable frame that is provided so as to straddle the opening of the molten metal container, (b) an elevating post that is supported by this frame and that can run, elevate, and rotate with respect to the frame. (C) The elevator posts are arranged at the lower end side and are integrally provided with each other at a predetermined interval, and are pressed so as to be in contact with the target surface at the same time, and follow the unevenness of the target surface. A pair of advancing and retracting follower rollers and (d) the follower rollers are provided integrally between the pair of follower rollers, and these follower rollers are simultaneously provided. Injection port on a surface of said object when the contact is in that it comprises a high pressure water injection nozzle which is arranged to face the sperm.

(Effect) Between a pair of follower rollers provided integrally with each other, a high-pressure water jet nozzle is directed to the follower rollers, and when these follower rollers come into contact with each other at the same time, the jet port is directed straight to the target surface. As described above, the pair of follower rollers are pressed so as to be in contact with the target surface at the same time, so that high-pressure water is always directed almost straight to the target surface. Is jetted.

Therefore, the refractory lining that requires repairing over the required layer thickness by the cutting force due to the jetting of high-pressure water can be used to make the work environment poor, while responding very easily to various surface conditions and wear lining surfaces. Without doing so, the repair speed is fast, the running cost is kept low, and the peeling and dismantling can be efficiently performed.

Also, by pressing the pair of follower rollers so that they are in contact with the target surface at the same time, regardless of the effects of "repelling high-pressure water", "repelling demolition debris", and "generating water vapor". The peeling and dismantling work can be reliably performed.

As the tracing roller, a so-called tandem tracing roller that is arranged in a row in the moving direction is preferable. Further, the injection port of the high-pressure water injection nozzle is placed behind the profile line of the pair of profile rollers in a face-to-face relationship, and the distance to the rear is determined by the material of the refractory lining and the pressure of the high-pressure water. It is desirable to adjust accordingly. The dismantling depth is
It is desirable to adjust by changing the moving speed of the high pressure water jet nozzle.

(Example) Next, a specific example of the case where the dismantling device for a refractory lining according to the present invention is applied to a tappipe will be described with reference to the drawings.

In FIG. 1, 1 is a tappipe, 2 is a structural refractory (permanent lining) in contact with an iron shell or the like, and 3 is a lining refractory lining whose surface is worn away by a molten metal flow and presents an uneven state.

The refractory lining immediately before starting the dismantling work has unevenness over the entire length of the taphole gutter 1, and the front surface of this refractory lining is dismantled by a specified thickness, and the work according to the present embodiment is performed cold. It is an example.

A moving frame 11 is provided so as to straddle an opening of a tap pipe 1 which is a molten metal container, and a moving frame 12 is mounted on the moving frame 11 so as to be movably supported. A traveling saddle 14 is mounted on the moving frame 12, and a traveling saddle is further mounted.
A traverse base 15 is provided on the traverse base 15, and an elevating post 13 penetrating the traverse base 15 is provided on the traverse base 15.

These moving frame 12, traveling saddle 14, transverse base 15,
Each of the lifting posts 13 is a drive unit for movement (in the present embodiment, it is composed of an electric motor like other units).
16, traveling drive 17, traverse drive 18, lift drive 20
It is driven and moved by. Therefore, the moving base 11
If the movement direction of the moving frame 12 that moves over a wide area and the traveling saddle 14 that slightly moves within the range limited by the moving frame 12 is the X-axis direction, the traverse base 15 on the traveling saddle 14 is in the Y-axis direction. And the elevating post 13 penetrating the transverse base 15 moves in the Z-axis direction. This lifting post 13 is rotated by the rotation driving machine 19,
The follower 30 provided at the lower end of the elevating post 13 can be freely and uniformly positioned with respect to the lining refractory lining 3 to be disassembled.

The following portion 30 has a worn lining refractory lining 3
A pair of tracing rollers 31 that are always in contact with the surface of each of the tracing rollers 31 and are integrally provided with each other at a predetermined interval, and between the pair of tracing rollers 31 a high pressure water integrated with the tracing rollers 31. The jet nozzle 32 is provided, and the tip of the high-pressure water jet nozzle 32 is arranged at a predetermined distance from the tracing line of the tracing roller 31. Such a follower 30 has a structure including a control cylinder 33 and a deflection cylinder 36, and the pair of follower rollers 31 are pressed by the action force of the control cylinder 33 with a constant pressure in the disassembling surface direction to form an uneven surface. The high-pressure water jet nozzle 32 is always in contact with and smoothly followed, and the jet port of the high-pressure water jet nozzle 32 is directed directly to the dismantling surface and kept at a predetermined interval from the dismantling surface. Further, the action line of the follower roller 31 and the high-pressure water jet nozzle 32 can be deflected from the right angle with respect to the axis line of the elevating post 13 by 0 degrees by the action of the deflection cylinder 36. The dismantling work also extends to the bottom of the pigtail 1.

The high-pressure water jet nozzle 32 is supplied with water from the high-pressure water generator 40 via the high-pressure water pipe 35, the swivel joint 34, and the water passage in the elevating post 13. The above-mentioned driving machines are controlled by the control unit 41, and the control unit 41 and the high-pressure water generator 40 are safely operated by the remote control panel 42.

The refractory lining disassembling apparatus according to the present invention configured as described above is capable of adjusting the movement of the traveling saddle 14 and the traverse base 15 within a range of 0.5 to 5 m / min. Preferably. Also, follow roller
31 contour surface, that is, dismantling surface and high pressure water jet nozzle 32
Unevenness of the distance between the injection port, the injection of high pressure water 1500~3000kg / cm ^2, by adjusted with 10~100mm range, and adjusting the nozzle moving speed 0.5 to 5 m / min., The wear The thickness of the slag layer, which is a poor quality layer that has deteriorated while producing the cracks, and the embrittlement layer that is in contact with the slag layer, has a thickness of 10 to 30 mm.

Even when the refractory lining is hot at around 500 ° C., disassembling work can be achieved without trouble by only providing appropriate heat-resistant means to each part.

[Brief description of drawings]

FIG. 1 is a perspective view showing a concrete embodiment of the dismantling device for a refractory lining according to the present invention applied to a tappipe. 1 …… Dead iron gutter 2 …… Structural refractory 3 …… Inner refractory lining 11 …… Transportation base 12 …… Movement frame 13 …… Elevation post 14 …… Running saddle 15 …… Transverse base 30 …… Following part 31 …… Following roller 32 …… High pressure water jet nozzle 33 …… Controller cylinder 36 …… Deflecting cylinder

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Yoshiaki Murakami 1-3-1, Niihama, Arai-cho, Takasago, Hyogo Prefecture Harima Ceramic Co., Ltd. (72) Yoshitaka Nakazawa 1-3-1, Niihama, Arai-cho, Takasago, Hyogo Prefecture Harima Ceramics Co., Ltd. (56) Reference JP-A-1-184393 (JP, A) JP-A-1-12199 (JP, A) JP-A-1-200190 (JP, A) Actual development Sho-54-108724 ( JP, U)

Claims (1)

[Claims] 1. A refractory lining dismantling device for separating and dismantling a required portion by a cutting force generated by jetting high-pressure water, comprising: (a) a movable frame provided across an opening of a molten metal container; (B) An elevating post that is supported by the frame and is capable of running, elevating, and rotating with respect to the frame. (C) An elevating post that is arranged at the lower end side of the elevating post and is integrally provided at a predetermined interval. , A pair of follower rollers that are pressed so that they are in contact with the target surface at the same time and move forward and backward following the irregularities of the target surface, and (d) between the pair of follower rollers that are integral with the follower rollers. And a high-pressure water jet nozzle arranged so that the jet port faces straight to the target surface when these tracing rollers come into contact with each other at the same time. Disassembling apparatus of the refractory lining, wherein the door.