JPH0841556A - Removal of stuck material to flue of smelting furnace - Google Patents

Abstract

PURPOSE:To provide a removing device of stuck material, by which the stuck material to the inside wall surface of a flue can mechanically be removed without stopping a smelting furnace operation. CONSTITUTION:At the time of projecting the piston part 51 of a projecting member 50 from the inner wall surface 12 of a jacket 11 constituting the flue 10 by working a hydraulic cylinder 40, the thin plate-like stuck material D to the inner wall surface 12 is pushed by the piston part 51 and detached from the inner wall surface 12. Further, exhaust gas flow in the flue 10 is closely sealed with a seal ring 26 and a seal member 33, and since the exhaust gas is not leaked to the outside from the gap part of the removal device 100 for stuck material, the stopping of smelting furnace is unnecessary at the time of removing the stuck material, and also, since the stuck material D can mechanically be removed, the physical load on the operator can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for mechanically removing cast deposits adhering to the inner wall surface of a flue of a smelting furnace used for continuous smelting of copper.

[0002]

2. Description of the Related Art Conventionally, smelting equipment for continuously smelting copper as shown in FIG. 4 has been used. This smelting facility melts and oxidizes copper concentrate supplied together with oxygen-enriched air via a lance 7 inserted through its ceiling, and a Kawa M containing a mixture of copper sulfide and iron sulfide as a main component, A smelting furnace 1 that produces a gangue in a copper concentrate, a solvent, and a karami S composed of iron oxide, and a kawa M and a karami S produced in the smelting furnace 1.
And a copper-making furnace 3 that further oxidizes the river M separated from the kalami S in the separating furnace 2 to produce crude copper C. Further, between the smelting furnace 1 and the separating furnace 2, and between the separating furnace 2 and the copper-making furnace 3, gutters 4 and 5 for transferring the molten metal are respectively provided, It is designed to continuously smelt copper. Then, in the smelting furnace 1, exhaust gas generated by reacting a large amount of oxygen-enriched air supplied from the lance 7 with copper concentrate or the like is passed through a flue not shown in FIG. It is designed to be taken out of the smelting furnace 1.

[0003]

By the way, in the smelting furnace 1, since a large amount of oxygen-enriched air is blown into the river M and the karami S vigorously, the inner wall surface of the flue is The splashes of the Kawa M and the Karami S gradually adhere and grow, and so-called casting occurs. Since this casting gradually grows and eventually blocks the flue, conventionally, the operation of the smelting furnace 1 is stopped, the flue is removed, and the casting adhered to the inside by the hand of the worker. Have been removed. Therefore, not only the operating rate of the smelting furnace 1 is lowered, but also the work of removing the casting that is thickly adhered to the inner wall surface of the flue requires a considerable amount of work, which imposes a heavy physical burden on the worker. It was

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to prevent the casting adhered to the inner wall surface of the flue from stopping the smelting furnace, and An object of the present invention is to provide a casting removal device that can be mechanically removed.

[0005]

SUMMARY OF THE INVENTION According to the present invention, there is provided a projecting member capable of projecting toward the inside of the flue from a through hole penetrating the wall of the flue, and driving the projecting member. And a driving means for driving the flue.

[0006]

When the drive device causes the projecting member to project toward the inside of the flue, the projecting member presses the casting attached to the inner wall surface of the flue. The pressed casting will peel off from the wall of the flue.

[0007]

[Embodiment] 1 of a device for removing cast-in flue of a smelting furnace of the present invention
Embodiments will be described below in detail with reference to the drawings. Here, FIG. 1 is an enlarged plan sectional view showing a main part of the casting removal device, FIG. 2 is a plan sectional view of a flue showing the arrangement of the casting removal device, and FIG. 3 is a layout of the casting removal device. It is a side sectional view of the flue shown.

As shown in FIG. 1, the device for removing cast metal from the flue of the smelting furnace according to the present embodiment has a first frame 20 removably attached to the wall surface of the flue 10, and the first frame. A second frame 30 screwed to the second frame 20, a hydraulic cylinder 40 as a drive device fixed to the second frame 30, and a hydraulic cylinder 40 driven by the hydraulic cylinder 40 to project to the inside of the flue 10. And a protruding member 50.

As shown in FIGS. 2 and 3, the flue 10 is constructed by stacking a plurality of substantially cylindrical jackets 11 each having a shorter axial length as compared with the diameter dimension thereof, and then screwing them together. The flue gas is formed into a cylindrical shape by being arranged so as to extend vertically upward from the smelting furnace 1, and the exhaust gas generated inside the smelting furnace 1 is indicated by an arrow in the figure. It is made to flow and taken out of the smelting furnace 1.
Further, in the present embodiment, six casting removal devices 100 are attached to each jacket 11 so as to extend radially. A cylindrical peripheral wall 14 is erected around the through hole 13 penetrating the inner wall surface 12 of the jacket 11 so as to extend radially outward. A pair of tongue pieces 15 are erected on the outer peripheral surface of the peripheral wall 14 so as to be symmetrical with respect to the axis of the peripheral wall 14. Further, on the tongue piece 15, a bolt 17 into which a female screw having a rotating handle 18 is screwed is attached.
Is pivotally supported by.

The first frame 20 is a jacket 1
A cylinder for detachably fixing the hydraulic cylinder 40 and the projecting member 50 to the inner wall surface 12 of the first cylinder, which is fitted to the inner peripheral surface of the peripheral wall 14 standing on the inner wall surface 12 of the jacket 11. -Shaped fitting wall 21 and inner peripheral wall 2 attached to the fitting wall 21 and flush with the inner wall surface 12
2 and the protruding member 5 attached to the inner peripheral wall 22.
0 is slidably inserted into a pipe 23 forming a protruding member insertion hole 24, and is attached to an axially outer end of the fitting wall 21 so as to be perpendicular to the axis of the protruding member insertion hole 24. A pressing plate 25 that extends, a seal ring 26 that is externally fitted to the fitting wall 21 and positioned by the pressing plate 25, and an end surface of the pipe 23 that is axially outward and fixed to the protruding member insertion hole 24. The fixing plate 27 extends in the direction perpendicular to the axis.

The second frame 30 is a substrate 3 which is closely attached and screwed to the fixing plate 27 of the first frame 20.
1 and the protruding member insertion hole 2 fixed to the substrate 31.
4, a pair of side walls 35 extending parallel to the axis of the four and facing each other, and fixed to the ends of the side walls 35 to extend perpendicularly to the axis of the projecting member insertion hole 24 and the hydraulic cylinder 40. And a hydraulic cylinder fixing plate 36 screwed on. Further, a pipe 32 extending coaxially with the axis of the protruding member insertion hole 24 is fixed to the substrate 31, a seal member 33 is inserted in the pipe 32, and the seal member 33 is provided at an end portion thereof. A seal retainer 34 for compressing is screwed.

The hydraulic cylinder 40 is screwed to the fixed plate 36 of the cylinder frame 30, and the hydraulic piston 41 thereof is inserted into a through hole (not shown) penetrating the fixed plate 36 so as to push out the protruding member. Insertion hole 2
4 so as to extend coaxially. When hydraulic pressure is supplied from a hydraulic source (not shown), the hydraulic piston 41
Are projected toward the protruding member insertion hole 24 side.

The ejection member 50 has a cylindrical piston portion 51 slidably fitted in the ejection member insertion hole 24, and the piston portion 51 is connected to the hydraulic cylinder 4.
A coupling member 52 that is coupled to the hydraulic piston 41 of 0, and the size of the tip of the piston portion 51 that is interposed between the coupling member 52 and the hydraulic piston 41 and that projects from the inner wall surface 12 of the jacket 11 is adjusted. Adjusting nut 53
It has and.

A casting removal device 1 constructed as described above.
To assemble 00, first, the base plate 31 of the second frame 30 is brought into close contact with the fixing plate 27 of the first frame 20 and screwed together. Next, the connecting member 52 having the piston member 51 screwed to its end is inserted into the pipe 32 of the second frame 30 and the seal retainer 34 is rotated to appropriately compress the seal member 33 to appropriately compress the outer peripheral surface of the connecting member 52. In close contact with. Then, the hydraulic piston 4 of the hydraulic cylinder 40 screwed to the hydraulic cylinder fixing plate 36 of the second frame 30.
1 and the connecting member 52 are connected to each other by the adjusting nut 53. The flue 10 is installed with the casting removal device 100.
In order to attach it to the jacket 11 of No. 1, first, the fitting wall 21 of the first frame 20 is fitted into the through hole 13 of the jacket 11, and the pair of bolts 17 is attached to the pin 16 of the pin 16.
The pressing plate 25 of the first frame 20 is rotated around the
It engages with a notch groove (not shown) provided in the. When the handle 18 is rotated in this state, the seal ring 26 causes the side surface of the pressing plate 25 and the jacket 1 to rotate.
It is pinched and pressed by the end face of the peripheral wall 14 of No. 1 and seals the gap between the two.

Next, the operation of the casting removal device 100 of this embodiment will be described. When the smelting furnace 1 is operated, droplets of Kawa M and Karami S adhere to the inner wall surface 12 of the jacket 11,
Gradually grows to form a thin plate-shaped casting D. In this state, when hydraulic pressure is supplied to the hydraulic cylinder 40 to cause the hydraulic piston 41 to project, the piston portion 51 of the projecting member 50 causes the jacket 11 to move as shown by the chain double-dashed line in FIG.
From the inner wall surface 12 of the No. 2 inward in the radial direction. As a result, the casting D is pressed by the piston portion 51 and separated from the inner wall surface 12. At this time, in the present embodiment, since six casting removal devices 100 are radially arranged in one jacket 11, the thin plate-shaped casting D is radially inward at six portions in the circumferential direction. They are pressed toward each other and deformed. Therefore, the cast D is broken into a plurality of pieces, falls into the smelting furnace 1, and is melted again.

Exhaust gas flowing in the flue 10 and taken out of the smelting furnace 1 is sealed by the seal ring 26 and the seal member 33, and leaks to the outside from the gap portion of the casting removal device 100. It is supposed not to put out. As a result, since the casting removal device 100 can be operated while the smelting furnace 1 is operating, it is not necessary to stop the smelting furnace 1 to remove the casting D, and thus the smelting is performed. The operating rate of the furnace 1 is not reduced. Furthermore, since the cast D can be removed mechanically, the physical burden on the worker can be significantly reduced. In addition, in the present embodiment, the removed cast D is dropped into the smelting furnace 1 and is melted again. Therefore, it is necessary to transport the removed cast D for disposal. There is no. Further, the casting removal device 100 according to the present embodiment.
Is detachably attached to the jacket 11, so that even if a failure occurs in the casting removal device 100, the casting removal device 100 can be easily removed and repaired.

The jacket 11 is used in this embodiment.
Although the cylindrical piston portion 51 of the protruding member 50 is projected from the inner wall surface 12 of the above, it is not necessary to be caught by this and the shape of the piston portion 51 may be changed or larger. Further, in the present embodiment, six casting removal devices 100 are attached to the jacket 11, but the number of casting removal devices 100 may be appropriately changed according to the size of the jacket 11. Is.

[0018]

EFFECTS OF THE INVENTION Since the casting device for removing flue gas from a smelting furnace of the present invention is constructed as described above, the following excellent effects can be obtained. That is, the flue casting removal device of the smelting furnace of the present invention can remove castings while the smelting furnace is operating, so there is no need to stop the smelting furnace. The operating rate of the smelting furnace can be improved. Moreover, since the cast can be mechanically removed, the physical burden on the worker can be reduced. As a result, according to the present invention, it is possible to provide a casting removal device that can mechanically remove casting adhered to the inner wall surface of the flue without stopping the smelting furnace.

[Brief description of drawings]

FIG. 1 is an enlarged plan sectional view showing a main part of an embodiment of a casting removal device according to the present invention.

FIG. 2 is a plan sectional view of a flue showing an arrangement of the casting removal device shown in FIG.

FIG. 3 is a side sectional view of a flue showing an arrangement of the casting removal device shown in FIG. 1.

FIG. 4 is a side sectional view schematically showing a continuous smelting apparatus for copper.

[Explanation of symbols]

 C Crude copper M Kawa S Karami D With cast 1 Smelting furnace 2 Separation furnace 3 Copper furnace 4 Melt transfer gutter 5 Melt transfer gutter 6 Melt transfer gutter 7 Lance 10 Flue 11 Jacket 12 Inner wall surface 13 Through hole 14 Around Wall 15 Tongue piece 16 Pin 17 Bolt 18 Handle 19 20 First frame 21 Fitting wall 22 Inner peripheral wall 23 Pipe 24 Ejecting member insertion hole 25 Holding plate 26 Seal ring 27 Fixing plate 30 Second frame 31 Board 32 Pipe 33 Seal Member 34 Seal retainer 35 Side wall 36 Hydraulic cylinder fixing plate 40 Hydraulic cylinder 41 Piston 50 Projecting member 51 Piston 52 Connecting member 53 Adjustment nut 100 Casting removal device

Claims (1)

[Claims] 1. A smelter characterized by comprising: a projecting member capable of projecting toward the inside of the flue from a through hole penetrating the wall surface of the flue; and driving means for driving the projecting member. Removal device for casting of furnace flue.