JPH0613249Y2 - Ore deposit protection liner mounting device - Google Patents

Description

[Detailed Description of the Invention] Industrial field of use [Technical Field] The present invention relates to an attachment device for an ore deposit protection liner for protecting the blast furnace wall from a charge such as ore charged from a charging facility at the top of the blast furnace. Is.

2. Description of the Related Art Conventionally, as a protection liner for ore deposits for protecting the furnace wall of a blast furnace, the one shown in FIG. 6 has been generally known, and this protection liner 101 has a vertical direction on the rear surface facing the furnace body skin 104 side. 110 with one end attached to each of three positions apart from each other, a threaded rod 116 provided at each other end of each of these chains and protruding outward from a hole 115 provided in the furnace shell, and this threaded rod Is tightened and fixed from the outside of the furnace body iron shell 104 by a nut 123 that is tightened and fixed via a receiving member 118 provided on the furnace body iron shell, and the wear line 103 formed on the surface of the ore receiving material 102 by this protective liner 101. It is designed to cover.

Problems to be Solved by the Invention By the way, the above-mentioned protective liner must be installed in a short time because it is carried out when the blast furnace is in a blast, so it is necessary to perform it in a short time. Even when locally formed on the surface of 102, the ore deposit 10 including the wear portion is formed.
It is designed to cover the entire height of 2, and it is necessary to make a large number (three in this example) of holes 115 for passing the chain 110 in the furnace shell 104 (for example, 20
20 x 3 = 60 holes of about φ150 are required for one protective liner, and it is necessary to reinforce the furnace shell 104 by a large number of holes. Wear resistance even though it is worn Since it is more difficult to make a hole in the ore-receiving material 102 having the same as the above-mentioned hole, many working days are required, and it is practically impossible to mount the ore receiving material 102 in a short time. In addition, there is a problem in that the cost increases as the number of holes is increased.

Therefore, the present invention solves the conventional problems as described above, and a protective liner is provided in a wear portion locally generated on the lower surface of the ore receiving material in a short time and easily only in the portion having the wear portion. An object of the present invention is to provide a mounting device for an ore deposit protection liner that can be mounted.

Means for Solving the Problems In order to achieve the above object, in a mounting device according to the present invention, an upper part of a liner capable of coating a wear part locally formed on a lower surface of an ore receiving material, and this liner A liner protection liner consisting of a liner bottom extending from the lower part of the upper part to the furnace body skin side integrally extends to cover the above-mentioned wear part at the upper part of the liner, and the lower part of the liner is removed by the brick below the ore product. The tip of the hollow is formed in contact with or close to the furnace shell. A pair of mounting members, one end of each of which is attached to two horizontally separated positions on the rear surface of the protective liner under the liner facing the furnace body shell, and the other end of the protective liner are provided on the furnace body shell. It is provided so as to project outward from the hole. A tightening member is provided for tightening and fixing the other end of these mounting members to a receiving member provided on the furnace shell. The space between the lower part of the liner and the furnace shell is filled with heat-resistant filler.

Operation According to the above-mentioned configuration, it is only necessary to make two holes in the furnace body shell for projecting the other end of the attachment member to the outside of the furnace body shell, and this drilling removes the brick. Since it can be performed at the position where the empty space is formed, the work becomes extremely easy. Further, there is no need to make a hole in the ore-receiving material, and it becomes possible to cover the locally worn portion formed on the lower surface of the ore-receiving material with the protective liner in a short time.

Embodiment FIG. 1 is a vertical sectional front view showing an embodiment of the present invention, and FIG. 2 is a plan view of the protective liner of FIG. 1, in which the upper half is the line A in FIG. 1 and the lower half is the first. Drawings along the line B of the drawing, respectively, and FIG. 3 are side views of the protective liner.

Reference numeral 1 is a protective liner, which is formed in a substantially square shape when viewed from the side. The protective liner 1 includes a liner upper portion 1a that covers a wear portion 3 that is locally formed on the lower surface of the ore receiving material 2,
It is composed of a liner lower portion 1b which extends from the lower portion of the upper portion of the liner toward the furnace shell 4 side by bending in a substantially L shape. On the back surface of the boundary between the liner upper portion 1a and the liner lower portion 1b, a receiving portion 9 horizontally protruding toward the iron skin 4 is provided. On the rear surface of the liner lower portion 1b below the receiving portion 9, mounting seats 5 for mounting a mounting rod, which will be described later, are provided at both laterally separated positions. Further, a contact portion 6 to the iron skin 4 is provided at the center of the tip of the liner lower portion 1b so as to be close to the iron skin 4, and the above-mentioned is provided at a position radially opposite to the mounting seat 5 on both sides of the corresponding land portion. Support part 8 having insertion hole 7 for inserting a mounting rod or the like
Is provided.

Reference numeral 10 denotes a mounting rod, one end of which is mounted to the mounting piece 11 of the mounting seat 5 via a bolt 12 or the like, and is covered with a mounting cylinder body 13 which is arranged through the insertion hole 7 so that the tip opening portion abuts on the mounting seat 5. It is being appreciated. The iron shell 4 is provided with two holes 15 through which the other ends of the rods 10 project outward, and a support for supporting the flange 16 of the mounting cylinder 13 at the peripheral edge of the holes. Short tube 17
Are fixed by welding. Flange 16 of mounting cylinder 13
A ring-shaped receiving plate 18 is attached by being pressed by a flange 21 of a cylindrical cap 20. The other end side of the threaded rod 10 is inserted into the receiving plate 18, a washer 22 is abutted, and a double nut 23 is screwed onto the thread of the rod 10 from above the washer. Reference numeral 25 is a brick, 26 is a castable refractory filler, 27 is a liner-carrying hanging piece projecting from the center of the upper end of the liner upper portion 1a, and 28 is a lower support for the ore-receiving material 2.

In order to cover the locally worn portion 3 of the ore deposit 2 in the above embodiment and to attach the protective liner 1, first, the brick 25 below the ore deposit 2 is removed as much as the liner lower portion 1b can be arranged. Next, the bricks 25 are removed and two holes 15 are drilled in the iron skin 4 which has become a void. The wearable portion 3 is covered with the liner upper portion 1a, the liner lower portion 1b is supported by the receiving portion 9 for the lower support base 28 of the ore receiving material 2, and the tip of the contact portion 6 is located close to the steel skin 4 1 hanging piece 27
It is arranged by hoisting it with a crane not shown.
Then, the rod 10 is inserted through the hole 15, and one end of the rod 10 is attached to the attachment piece 11 of the attachment seat 5 of the liner lower portion 1b with the bolt 12 or the like through the insertion hole 7 of the support portion 8. After the mounting, the mounting cylinder 13 is put into the rod 10 through the hole 15 and the tip opening portion is applied to the mounting seat 5 through the insertion hole 7 of the supporting portion 8. Then, the flange 16 of the mounting cylinder 13 is brought into contact with the supporting short pipe 17 fixed to the peripheral portion of the hole 15 and screwed. Next, the receiving plate 18, the washer 22, and the double nut 23 are sequentially inserted from the other end side of the rod 10, and the double nut 23 is tightened and fixed to the screw of the rod 10.
After fixing, cover the cap 20 and its flange 21 and mounting cylinder
The mounting plate 18 is sandwiched between the flanges 16 of 13 and screwed. Then, when the castable 26 is filled and solidified in the space surrounded by the back surface of the liner lower portion 1b and the iron skin 4, the mounting state as shown in FIG. 1 is completed.

In this installed state, the charge of the ore or the like charged from the charging equipment at the top of the blast furnace collides with the surface of the liner upper part 1a covering the wear part 3 by re-operation of the blast furnace, and the protective liner 1
Even if a downward load is applied to the furnace body iron shell 4 side, in addition to being supported by the mounting rod 10 and the mounting cylinder body 13, the receiving portion 9 that supports the lower support base 28 of the ore receiving object 2 and the furnace body iron This load can be countered by the contact portion 6 that comes into contact with the skin 4 from close proximity.

FIG. 4 is a vertical sectional front view showing another embodiment, and FIG. 5 is a plan view of the protective liner taken along the line C in FIG.

In this embodiment, the liner lower portion 1b mainly extends from the lower portion of the liner upper portion 1a toward the iron skin 4 integrally with the dogleg shape, and the contact portion 6 is projected obliquely downward. The point, that the support portion 8 is not provided, and that the castable 26 is filled not only in the space between the back surface of the liner lower portion 1b and the steel skin 4 but also in the lower half surface of the liner lower portion 1b. Unlike the embodiment, the other points are almost the same. Since the mounting work is also similar to that of the above-mentioned embodiment, its explanation is omitted.

Although the rod 10 is used as the mounting member in each of the above-mentioned embodiments, it goes without saying that a chain may be used as in the prior art instead of this.

Effect of the Invention Since the present invention has the above-mentioned structure, it is possible to attach the protective liner to the locally worn portion formed on the lower surface of the ore receiver extremely easily only at the portion having the worn portion. .

Moreover, it is only necessary to make two holes in the iron shell when installing the holes, the holes can be made in the empty space before filling with the heat-resistant filler, and there is no need to drill holes in the ore-receiving material. Therefore, the working time can be shortened, and the mounting time as a whole can be shortened. Also, the protective liner can be less than half the size of the conventional liner, and it is expected to have an excellent effect that the material cost can be kept low and the overall construction cost can be reduced. it can.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing an embodiment of the present invention, and FIG. 2 is a plan view of the protective liner shown in FIG. 1, in which the upper half is the line A in FIG. 1 and the lower half is the line in FIG. Drawings respectively along line B, FIG. 3 is a side view of the protective liner, FIG. 4 is a vertical sectional front view showing another embodiment, and FIG. 5 is a plan view of the protective liner along line C of FIG. FIG. 6 is a vertical sectional front view of a conventional example. DESCRIPTION OF SYMBOLS 1 ... Protective liner, 1a ... Liner upper part 1b ... Liner lower part, 2 ... Ore receiving material 3 ... Damaged part, 4 ... Furnace body skin, 5 ... Mounting seat 6 ... Contact part, 10 ... Mounting rod, 13 ... Mounting cylinder 15 ... hole, 18 ... backing plate, 22 ... washer 23 ... double nut, 25 ... brick 26 ... castable

Claims (1)

[Scope of utility model registration request] 1. A liner upper part capable of covering a wear part locally formed on a lower surface of an ore receiving material, and a liner lower part extending from the lower part of the liner upper part integrally to the furnace body side of the furnace body. The ore receiving material protection liner covers the above-mentioned wear part at the upper part of the liner, and the lower end of the liner is in the space formed by removing the bricks under the ore receiving material. And a pair of mounting members each having one end attached to two horizontally separated positions on the rear surface of the protective liner below the furnace body facing the iron shell side. A tightening member is provided which projects outward from a hole provided in the body iron skin, and which fastens and fixes the other ends of these mounting members to a receiving member provided in the furnace body iron skin, and the lower liner and the furnace body iron. Make sure that the space between the skins is filled with heat resistant filler. Mounting device ore hangers object protection liner to symptoms.