JPS6335357Y2 - - Google Patents

Description

[Detailed explanation of the invention] "Technical field" This invention is concerned with the construction structure of a high-temperature metallurgical furnace, and more specifically, the nose part located between one side of the furnace ceiling and the lower end of the side wall of the rising flue section. Regarding the improvement of

"Prior art and its problems" In continuous smelting of metal sulfide ores, etc., powder or granular ore, solvent, etc. are injected into the molten metal in a furnace together with pressurized gas to advance the metallurgical reaction. method is adopted. As shown in FIG. 3, a high-temperature metallurgical furnace 1 used for this usually has a lance pipe 2 for blowing raw materials vertically inserted from the furnace ceiling 3 toward the molten metal 4 in the furnace.

By the way, when the raw material is blown through the lance pipe 2 in this way, a splash 5 is generated there, and a part of this splash 5 rises and scatters into the flue 6, which may cause problems such as flue blockage.

Therefore, in the conventional high-temperature metallurgical furnace 1, as shown in FIG.
The above problem was solved by providing the splash presser plate 9 in a protruding manner.

However, in such a high-temperature metallurgical furnace 1, although the splash holding plate 9 can effectively prevent the splash 5 from scattering into the rising flue 6, A problem arises in that the bricks on the side wall 7 of the flue 6 are severely eroded.

Therefore, as a high-temperature metallurgical furnace 1 capable of dealing with these problems, a structure having a nose portion 8 as shown in FIG. 5 has been proposed. In this device, a water-cooled copper block jacket 10 is provided vertically for holding down the splash, and two water-cooled copper block jackets 11 and 12 are installed adjacent to this vertical jacket 10 on the side wall 7 of the rising flue 6. The jackets 10, 11, 12 are provided horizontally at the bottom and covered with a castable refractory 13. Of the two water-cooled copper block jackets 11 and 12 installed horizontally, the upper one is formed wide, and the surface 14 of the castable refractory 13 is covered with a vertical water-cooled copper block for holding down the splash. It is formed to be smoothly curved from the jacket 10 to the side wall 7 of the rising flue 6 so that gas can easily flow into the flue 6. In this high-temperature metallurgical furnace 1, the rising flue 6 of the splash 5
It is possible to prevent the liquid from scattering to the surrounding area, and to prevent the side wall 7 of the rising flue 6 from being eroded.

However, in the high-temperature metallurgical furnace 1 having such a structure, as shown in FIG.
A substantially triangular gap A is created between the guide walls 15, 15 of the rising flue 6 which intersects with the nose portion 8. Such a gap A cannot be filled with bricks, so it is filled with castable refractories. However, this castable refractory does not have sufficiently high strength and is therefore susceptible to melting damage. Therefore, in this high-temperature metallurgical furnace 1, when the furnace is operated for a long period of time, the strength of the lower part of the side walls 15, 15 of the rising flue 6 decreases due to melting of the castable refractory filled in the gap A. death,
There was a risk that the furnace would have to be shut down for repairs to this part.

``Means for Solving the Problems'' Therefore, the present invention provides a plurality of water-cooled copper block jackets installed horizontally in the nose portion so that their tip surfaces are located on almost the same vertical plane. By stacking bricks between these jackets, the high-temperature metallurgical furnace can be operated safely for a long period of time.

"Example" Hereinafter, the furnace construction structure of the high-temperature metallurgical furnace of the present invention will be described in detail with reference to Examples.

FIGS. 1 and 2 show an example of the furnace construction structure of the present invention, and show the nose portion 8 of the high-temperature metallurgical furnace 1. FIG. The nose portion 8 is a portion located between one side of the furnace ceiling 1 and the lower end of the side wall 7 of the rising flue 6. In this furnace construction, a water-cooled copper block jacket 16 is vertically installed on one side of the furnace ceiling 1. This jacket 16 (hereinafter abbreviated as vertical jacket) is used to hold down the splash, and is provided so as to protrude below the lower surface of the furnace ceiling 1.

Further, below the side wall 7 of the rising flue 6, two water-cooled copper block jackets 17, 17 are provided horizontally. These two horizontally installed jackets (hereinafter referred to as horizontal jackets)
are vertically spaced apart from each other. In addition, the end surfaces 17a, 1 of these horizontal jackets 17, 17 on the side of the rising flue 6 (this is referred to as the tip surface)
7a are located on substantially the same vertical plane. In the furnace construction structure of this example, since the horizontal jackets 17, 17 having the same width are used, the end surfaces of the horizontal jackets 17, 17 on the vertical jacket 16 side are also located on almost the same vertical plane. are doing. Of these horizontal jackets 17, 17, the lower jacket 17 is provided in contact with the side surface of the vertical jacket 16. This lower horizontal jacket 17 is provided slightly above the lower end surface of the vertical jacket 16. Also,
The upper one of the horizontal jackets 17, 17 is
It is provided above the upper end surface of the vertical jacket 16.

Bricks 18... are loaded between these horizontal jackets 17, 17. The front surface 18a of the loaded bricks 18...
It is provided so as to be located slightly forward of the tip portions 17a, 17a of 7, 17. The distal end surface 17a of the horizontal jacket 17 located above and the distal end surface 17a of the horizontal jacket 17 located below
The exposed portions of the jackets 16, 17, 17 from the vertical jacket 16 to the lower end 16a are covered with a cabstable refractory 19.

The side walls 15, 15 of the rising flue 6 are stacked along the front surface 18a of the bricks 18. Further, the side wall 7 of the rising flue 6 is erected on the upper surface of the upper horizontal jacket 17.

"Function" According to the construction structure of this high-temperature metallurgical furnace, the tip surfaces 17a of the plurality of horizontal jackets 17 provided in the nose portion 8 are located on almost the same vertical plane, so that these horizontal jackets By loading the bricks 18 between the holes 17, the front surface of the nose portion 8 can be formed vertically. The side wall 1 of the flue 6 rises in front of this nose portion 8.
If you pile up the bricks forming 5 and 15, the nose part 8
The side walls 15, 15 are in contact with each other without any gaps, and the bricks, which are less susceptible to melting damage than castable refractories, are continuous. Therefore, even if the furnace 1 with this built-in furnace structure is operated for a long period of time, there will be no gap caused by melting damage near the bottom of the side walls 15, 15 of the rising flue 6, and the strength of this part will be maintained for a long time. Retained.

In addition, according to this furnace construction structure, no gap is created between the nose portion 8 and the side walls 15, 15 of the rising flue 6, making the furnace construction easier and creating a structurally strong furnace. be able to.

Furthermore, castable refractory material 1 is placed between the jackets.
In the case of the conventional furnace structure filled with 3, as shown in FIG. 5, it was necessary to install a water-cooled copper block jacket a vertically here to close the space between the horizontal jackets 12 and 13. In the furnace construction structure of this invention, the bricks 18, which are not susceptible to melting damage, are loaded between the horizontal jackets 17, so that even if this part is not cooled by the jacket, no gaps will be created due to melting damage. Therefore, according to this furnace construction structure, there is no need to provide a jacket between the horizontal jackets 17, 17 to close the space between them, and the furnace structure can be simplified.

"Experimental Example" A high-temperature metallurgical furnace having the furnace construction shown in FIGS. 1 and 2 was constructed and operated for two years. after that,
When the inside of the furnace was investigated, it was found that sufficient strength was maintained between the side walls 15, 15 of the rising flue 6 and the nose portion 8, and no gap was created due to melting damage. Further, there was no accumulation of deposits on the rising flue 6 due to the splash 5.

Note that the furnace construction structure of the high-temperature metallurgical furnace of the present invention is not limited to the above embodiment. For example, in the above embodiment, the exposed portions of the horizontal jackets 17, 17 and the vertical jacket 16 are covered with castable refractories 13, but the exposed portions may be covered with bricks instead of castable refractories.

``Effects of the invention'' As explained above, the construction structure of the high-temperature metallurgical furnace of the invention includes a vertical jacket on one side of the furnace ceiling to hold down the splash, and a plurality of water-cooled copper block jackets on the nose. Installed horizontally so that the tip surfaces are located on almost the same vertical plane,
Since the structure is such that bricks are piled up between these horizontally provided jackets, there is no gap between the nose and the side wall of the rising flue that needs to be filled with castable refractory. Therefore, according to the furnace construction structure of the present invention, a high-temperature metallurgical furnace that can be operated safely for a long period of time can be constructed.

Further, according to this furnace construction structure, since no gaps are created, the furnace construction becomes easy, and the constructed furnace has advantages such as having a strong structure.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the main parts of an embodiment of the furnace construction structure of the present invention, Fig. 2 is a perspective view showing the main parts, and Fig. 3
The figure is a schematic cross-sectional view showing the overall structure of a pyrometallurgical furnace.
Figure 4 is a sectional view showing the main parts of the first example of the conventional furnace construction structure, Figure 5 is a sectional view showing the main parts of the second example of the conventional furnace construction structure, and Figure 6 is the second example of the same. FIG. 1...High temperature metallurgical furnace, 3...Furnace ceiling, 6...Rising flue, 7...Side wall, 8...Nose part, 16...
water-cooled copper block jacket (vertical jacket),
17...Water-cooled copper block jacket (horizontal jacket), 18...Brick, 17a...Tip surface.

Claims (1)

[Scope of Claim for Utility Model Registration] In a high-temperature metallurgical furnace, the nose portion located between one side of the furnace ceiling and the lower end of the side wall of the rising flue section is made of the following elements (A) to (C). A furnace construction structure in a high-temperature metallurgical furnace characterized by being constructed as follows. (A) A water-cooled copper block jacket installed vertically on one side of the furnace ceiling to hold down the splash. (B) Adjacent to this water-cooled copper block jacket for splash holding, horizontally spaced apart from each other vertically under the side wall of the rising flue, and with their end surfaces located on almost the same vertical plane. Multiple water-cooled copper block jackets installed in the (C) Bricks loaded between these horizontal water-cooled copper block jackets.