JP2013024526A - Water-cooled h type steel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water-cooled wide flange beam, which is capable of protecting a wide flange beam constituting a wall of a heating furnace such as a flash furnace for smelting copper from thermal damage, and capable of improving the durability of the wall of the flash furnace against a heat load.SOLUTION: The wide flange beam constituting the wall of the heating furnace is configured including a wide flange beam and a copper jacket having an internal cold water passage. In the water-cooled wide flange beam, the copper jacket is arranged so as to be brought into abutment with three U-shaped faces formed by the web of the wide flange beam and the lower parts of both flanges. As a result, high durability against the heat load can be imparted by simple processing for the existing wide flange beam.

Description

  The present invention relates to a water-cooled H-shaped steel constituting a wall of a heating furnace that is required to have high durability against a heat load, such as a self-melting furnace for melting copper concentrate.

  In copper smelting, a copper smelting method using a flash furnace is widely used. In the smelting method using the auto-smelting furnace, the copper concentrate dried by the pretreatment is put into the auto-smelting furnace, and the copper concentrate melted in the auto-smelting furnace is mainly composed of a mat having a high copper grade due to the difference in specific gravity, Separated into iron oxide slag. The mat is sent to the converter and refining furnace in the next process to become a refined anode, and further becomes 99.99% electrolytic copper in the copper electrolysis process, which becomes a raw material for electric wires and copper products.

  As a structural material for the wall of a self-melting furnace, an H-shaped steel having a cross-sectional shape of “H” shape having two vertical portions called flanges and one horizontal portion called a web is widely used. H-section steel is superior in cross-sectional efficiency, that is, bending rigidity and bending strength per weight, compared to other section steels. However, since the wall of the self-melting furnace is always exposed to high heat, the strength is inevitably reduced, and replacement or repair is required in a short period of time. Therefore, conventionally, in order to improve durability against heat load, for example, as shown in FIG. 7, as a cooling method of the H-shaped steel 61, an internal cold water channel 621 made of a copper pipe is not provided under the web 611. A water-cooled H-shaped steel 61 embedded in a refractory layer 63 filled with a regular refractory has been used. In this water-cooled H-shaped steel 61, the cooling water 7 that has passed through the internal cooling water passage 621 is further flowed to the upper side of the web 611 to be cooled.

  In recent years, the amount of concentrate melted in the auto-smelting furnace has been increased. As a result, for example, in the conventional water-cooled H-shaped steel 6, the heat load of the auto-smelting furnace has increased, and the amorphous refractory at the bottom of the H-shaped steel 61 has increased. The problem has come to the point that things fall off, the internal cold water channel 621 made of copper pipe is exposed and hangs down in the furnace, and finally the internal cold water channel 621 and the bottom surface of the H-shaped steel 61 have holes. If the cooling water 7 leaks into the auto-smelting furnace, a situation such as a steam explosion or a decrease in the strength of the bricks is caused, resulting in a decrease in the production amount. In order to improve safety and stabilize operation in copper smelting, a means for further enhancing durability against heat load of H-shaped steel has been demanded.

  Conventionally, for example, as a method of cooling a thermal furnace wall exposed to high heat to protect it from a thermal load, a method of cooling the wall body by providing a water channel in the wall body (Patent Document 1), a water cooling jacket, Various methods have been proposed, such as a method of cooling by installing in contact with a wall (Patent Document 2 and Patent Document 3).

JP 2000-144962 A JP 2006-71212 A JP 2011-75183 A

  However, all of these wall cooling methods are intended to protect refractories such as bricks and castables constituting the wall, effectively cooling the H-shaped steel itself constituting the wall, and the H-shaped steel itself. As a means for preventing melting due to heat load and solving the above problem, no effective solution has yet been found.

  The present invention is an H-shaped steel that constitutes a wall of a heating furnace such as a self-melting furnace that performs copper smelting, and is provided with a cooling means having excellent cooling efficiency and durability, thereby improving durability against a heat load. The object is to provide H-shaped steel.

  In the H-shaped steel constituting the wall of a heating furnace such as a self-melting furnace, the inventors of the present invention have a copper jacket whose cross-sectional shape unique to the H-shaped steel, which is originally limited to increase the cross-sectional efficiency, is a cooling means. Paying attention to the convenient shape for installation, the structure is such that the H-shaped steel web and the water cooling jacket made of copper are in contact with the bottom of both flanges, so that the cooling efficiency is high and the heat durability is also good. And found that the water-cooled H-shaped steel can be produced by a simple method and completed the present invention.

  (1) A water-cooled H-shaped steel constituting a wall of a heating furnace, comprising an H-shaped steel and a copper jacket having an internal cold water channel, wherein the copper jacket is connected to the H-shaped steel web and both A water-cooled H-shaped steel which is disposed inside a space formed by three U-shaped three surfaces formed by a flange lower part and is in contact with the three U-shaped surfaces directly or through a thermally conductive filler. .

(2) The water-cooled H-shaped steel according to (1), wherein a refractory layer made of an irregular refractory material is formed between both flanges of the H-shaped steel so as to cover the bottom surface of the copper jacket.
(3) The water-cooled H-shaped steel according to (1) or (2), wherein the internal cold water channel is arranged at a position closer to the web of the H-shaped steel than a center position in the copper jacket. .

  (4) A concave notch is formed on the bottom surface of the copper jacket, and the refractory layer is formed by filling the irregular refractory into the notch with no gap. The water-cooled H-shaped steel according to any one of (1) to (3).

  (5) Any of (1) to (4), wherein the copper jacket is provided with a built-up welded portion that is subjected to build-up welding with a heat-resistant and wear-resistant alloy on at least a bottom surface near the flange tip of the H-shaped steel. Water-cooled H-shaped steel according to crab.

  (6) The internal cold water channel is formed in the copper jacket by an opening process to a copper block constituting the copper jacket, (1) to (5), Water-cooled H-shaped steel.

  (7) A metal pipe is cast into a copper block constituting the copper jacket, and the internal cold water channel is formed in the copper jacket by the metal pipe. The water-cooled H-shaped steel according to any one of (5).

  (8) A heating furnace having a wall configured to include the water-cooled H-shaped steel according to any one of (1) to (7), wherein a predetermined range in the wall of the heating furnace includes ( Only the water-cooled H-shaped steel according to 6) is disposed, and only the water-cooled H-shaped steel according to (7) is disposed in the other predetermined range in the wall of the heating furnace. A heating furnace.

  (9) A cooling method for a heating furnace in which a wall of the heating furnace is cooled by pouring water into an internal cooling water channel of the water-cooled H-shaped steel according to any one of (1) to (7).

  ADVANTAGE OF THE INVENTION According to this invention, the H-shaped steel which comprises the wall body of heating furnaces, such as a self-melting furnace, can be cooled effectively, and the water-cooled H-shaped steel with sufficient high durability with respect to a heat load can be provided. In addition, this water-cooled H-shaped steel can impart high durability against heat load by simple processing on existing H-shaped steel. As a specific example, the durability of the wall constituting the self-melting furnace can be remarkably increased, and the safety can be improved and the operation can be stabilized.

It is a cross-sectional schematic diagram which shows the whole structure of a self-melting furnace. 1 is a perspective view of a water-cooled H-shaped steel according to the present invention. It is a cross-sectional schematic diagram which shows the structure of the water-cooled H-shaped steel which concerns on this invention. It is a cross-sectional schematic diagram in one form of the copper jacket which comprises the water-cooled H-shaped steel which concerns on this invention. It is a cross-sectional schematic diagram in other embodiment of the copper jacket which comprises the water-cooling type H-shaped steel which concerns on this invention. It is a cross-sectional schematic diagram which shows the whole structure of one Example of the water-cooled H-shaped steel which concerns on this invention. It is a plane schematic diagram which shows the preferable example of arrangement | positioning in the flash-melting furnace of the water-cooled H-shaped steel which concerns on this invention. It is a cross-sectional schematic diagram which shows the structure of the conventional water-cooled H-shaped steel.

  Hereinafter, embodiments of the present invention will be described in detail by taking the case where the present invention is applied to a flash furnace as an example, but the present invention is not limited to the following embodiments. The present invention can be applied to any other heating furnace for performing metal processing involving high-temperature processing such as rolling and forging.

<Overall structure of auto-smelting furnace and overall process of copper smelting using auto-smelting furnace>
First, the overall structure of a flash smelting furnace that performs copper smelting, which is an embodiment of the water-cooled H-shaped steel of the present invention, will be described with reference to FIG. As shown in FIG. 1, the self-melting furnace 1 is a blast furnace including a reaction shaft 20, a settler 30, and an uptake 40. The reaction shaft 20 is provided with an inlet 21 for introducing copper concentrate and high-temperature gas, a setter 30 having a slag hole 31 for discharging the slag 301, and a mat 302 formed on the side of the flash furnace. A mat hole 32 for recovery is formed, and a discharge port 41 for discharging high-temperature sulfurous acid gas 303 is formed in the uptake 40, respectively.

  In the copper smelting using the self-smelting furnace 1, in order to melt the copper concentrate as a raw material in the self-smelting furnace 1, the water content is reduced from 10% to 1% or less in a concentrate drying facility (not shown) as a pretreatment. dry. The dried copper concentrate is fed into the auto-smelting furnace 1 from the carry-in port 21 above the reaction shaft 20 by a transport facility (not shown) such as a screw conveyor. In the self-melting furnace 1, simultaneously with copper concentrate, a solvent such as silica and high-temperature oxygen-enriched air are blown into the self-melting furnace 1 from the carry-in port 21. The copper concentrate is melted in the reaction shaft 20 to produce a slag 301 made of iron oxide and a solvent, a mat 302 having a copper grade of about 65%, and a sulfurous acid gas 303. The generated slag 301 and the mat 302 are separated by specific gravity by the settler 30, and the slag 301 is discharged from the slag hole 31 and reused as a concrete aggregate or a caisson filling material. The mat 302 is recovered from the mat hole on the side of the flash furnace and sent to the next converter (not shown) and the refining furnace (not shown) to become a refined anode, and in the next copper electrolysis process. It becomes 99.99% electrolytic copper and becomes a raw material for electric wires and copper products. The sulfurous acid gas 303 passes through the uptake 40, is discharged from the discharge port 41, is heat recovered by the waste heat boiler, and is sent to the sulfuric acid production process to produce sulfuric acid.

  In general, H-shaped steel is widely used as a structural material of a self-melting furnace. However, in the self-melting furnace 1, by using a water-cooled H-shaped steel 5 according to the present invention, which will be described in detail below, as an H-shaped steel, Durability is remarkably improved. Although it is not essential that all the H-shaped steels constituting the self-melting furnace are water-cooled H-shaped steels 5, as shown in FIG. 1, at least the ceiling portion A of the reaction shaft 20, which is a particularly high heat load portion, reaction The water-cooled H-shaped steel 5 is preferably installed in the lower part B of the shaft 20, the ceiling part C of the settler 30, the ceiling part D of the uptake 40, and the like.

<Water-cooled H-shaped steel>
Next, an embodiment of the water-cooled H-shaped steel 5 according to the present invention will be described with reference to FIGS. As shown in FIGS. 2 and 3, the water-cooled H-shaped steel 5 includes an H-shaped steel 51 and a copper jacket 52, and further includes a refractory layer 53.

  In the water-cooled H-shaped steel 5, the top surface 526 and both side surfaces 524 of the substantially rectangular copper jacket 52 are formed of the U-shaped three surfaces formed by the web 511 of the H-shaped steel 51 and the lower portions of both flanges 512. The lower surface of the web 511 is in contact with the lower surface without any gap, and the lower inner surfaces of both flanges 512 are in contact with each other via a heat conductive filler 54 having excellent heat conductivity. In the water-cooled H-shaped steel 5 of the present invention, the heat conductive filler 54 may also be filled between the top surface 526 and the lower surface of the web 511. Further, by providing a convex portion on the top surface 526 and filling the heat conductive filler 54 only for a part of the concave portion that occurs, the top surface 526 and the lower surface of the web 511 are in direct contact, and the concave portion that is partly generated It is good also as a structure which contacts through the conductive filler 54. With any of the above configurations, the contact area between the copper jacket 52 and the H-shaped steel 51 can be maximized to increase the cooling efficiency.

  The H-shaped steel 51 is a columnar steel material whose length in the longitudinal direction generally ranges from several meters to several tens of meters. The number of the copper jackets 52 arranged on one H-shaped steel 51 is not particularly limited, but usually a plurality of copper jackets 52 are arranged in series in the longitudinal direction of the H-shaped steel 51.

  As the H-shaped steel 51, an H-shaped steel which is a conventionally known general shaped steel can be used. The shape and dimensions of the H-shaped steel are defined in JIS G 3192 and JIS A 5526, but in the water-cooled H-shaped steel of the present invention, the dimensions of the copper jacket 52 can be appropriately matched. About the H-shaped steel 51, what is necessary is just to use suitably the thing of arbitrary dimensions as needed. In addition, H-shaped steel does not necessarily have to be linear, and if the cross-sectional shape is H-shaped, the shape of the copper jacket can be adapted to the shape of the H-shaped steel even if it is an arch-shaped or ring-shaped steel material It is possible to apply the present invention by casting into a shaped shape.

  The copper jacket 52 is arranged inside a space formed by three U-shaped surfaces formed by the web 511 of the H-shaped steel 51 and the lower portions of both flanges 512. By arranging the copper jacket 52 in this way, a high heat load applied to the lower portion of the H-shaped steel can be reduced.

  The copper jacket 52 arranged at the above position is fixed to the H-shaped steel 51 with a bolt 55. The bolt 55 may penetrate the copper jacket 52 as shown in the figure, or may be an embedded type by screwing into the copper jacket 52. The means for fixing the copper jacket 52 to the H-shaped steel 51 is not limited to the above. Any means capable of firmly fixing the copper jacket 52 in the above arrangement may be used.

  The copper jacket 52 is a copper block body including an internal cold water channel 521 for flowing cooling water. In order to maximize the contact area between the web 511 of the H-shaped steel 51 and the three U-shaped three surfaces formed by the lower portions of both flanges 512, it is necessary to use one having an appropriate shape and size. For example, a substantially rectangular parallelepiped copper jacket as shown in FIG. 2 can be preferably used. A concave notch 525 is preferably formed on the bottom surface 523 of the copper jacket 52. In addition, an external cold water channel 57 for injecting or discharging cooling water is connected to an opening portion at the end of the internal cold water channel 521 formed on the surface of the copper jacket 52.

The shape of the notch 525 is not particularly limited. For example, as shown in FIGS. 3 and 4, the refractory material is filled with no gap along the inner surface of the notch 525 to form the refractory layer 53. By setting it as a structure, stability of the fireproof layer 53 can be improved. Further, even when the refractory layer 53 is worn out, self-coating by the scattered melt is easily formed inside the notch 525, and this self-coating also allows the head of the penetrating bolt 55, the copper jacket 52, and the H The mold steel 51 can be protected from a heat load from the furnace and a corrosive gas (SO ₂ gas). Further, as a modification of the notch 525, a cross-sectional shape in a plane perpendicular to the longitudinal direction of the H-shaped steel 51 is a tapered shape in which the width is widened toward the bottom surface side, or a reverse taper in which the width is narrowed toward the bottom surface side. It can also be made into a shape, and both improve the workability and increase the stability of the refractory layer 53.

  As shown in FIG. 3, the internal cold water channel 521 of the copper jacket 52 is located at the center position O in the copper jacket 52, that is, from the position where both the distance from the top surface 526 and the distance from the bottom surface 523 are the same t. It is preferable to be formed through the copper jacket 52 at a position closer to the top surface 526 side.

  By forming the internal cold water channel 521 at the above position, even if a part near the bottom surface 523 of the refractory layer 53 and the copper jacket 52 is melted by a thermal load, the internal cold water channel 521 is still formed in the copper block. In the encapsulated state, it is possible to avoid melting of the internal cold water channel 521 due to a heat load.

  As an example, the internal cold water channel 521 of the copper jacket 52 can be formed by subjecting a copper block constituting the copper jacket 52a to an opening process by machining. The copper jacket 52a provided with the internal cold water passage 521a formed in this manner has no cooling effect loss due to the cooling water and has high cooling efficiency.

  As for the internal cold water channel 521 of the copper jacket 52, or as shown in FIG. 4B, a metal pipe made of copper or the like formed in advance in a predetermined shape is cast into a copper block forming the copper jacket 52b. Can also be formed. The copper jacket 52b having the internal cold water channel 521b formed in this way is safe because the metal pipe can prevent water leakage even when the copper block constituting the copper jacket 52b is melted or worn. High nature.

  One or a plurality of internal cooling water channels 521 (521a or 521b) can be formed according to the dimensions of the appropriate copper jacket 52, but a plurality of the internal cooling water channels 521 are installed in the copper jacket 52. It is preferable. If there are a plurality of internal cold water channels 521, for example, when one internal cold water channel 521 leaks, the water flow into the copper jacket 52 can be continued in the other internal cold water channel 521, and the water-cooled H-shaped steel 5 is continuously cooled. This is because it can be kept in a possible state. In the water-cooled H-shaped steel 5 of this embodiment, as shown in FIGS. 3 and 4, two internal cold water passages 521 are formed in parallel in the copper jacket 52, but three or more are formed. If the width of the copper jacket 52 is small and it is difficult to form two in the horizontal direction, two internal cold water channels 521 may be formed in the vertical direction.

  As shown in FIG. 3, it is preferable that a built-up welded portion 522 formed by build-up welding a heat-resistant and wear-resistant alloy is formed on a part of the bottom surface 523 and the side surface 524 of the copper jacket 52. Moreover, the range of the overlay welding part 522 is performed at least on the entire bottom surface 523 which is the bottom surface side when the water-cooled H-shaped steel 5 is installed in the self-melting furnace 1, that is, the inner surface of the self-melting furnace 1. The side surface 524 is preferably performed only in the vicinity of the bottom surface closer to the bottom surface than the center position O of the copper jacket 52. By constructing the area where the overlay welding part 522 is applied only in such a particularly high heat load range, it is possible to minimize the decrease in the area in which the copper jacket 52 and the H-shaped steel 51 are in direct contact with each other. The heat resistance of the water-cooled H-shaped steel 5 can be further increased while maintaining sufficient cooling efficiency. Ni-Cr alloy can be preferably used as the heat-resistant and wear-resistant alloy, but is not limited to this, and other heat-resistant and wear-resistant alloys in which other heat-resistant and wear-resistant components such as molybdenum are added to Ni-based heat-resistant alloys, etc. Conventionally known heat-resistant and wear-resistant alloys can be used.

  The refractory layer 53 covers the bottom surface 523 of the copper jacket 52 and is formed by filling an indeterminate refractory between both flanges 512 of the H-shaped steel 51. Further, the refractory layer 53 may be formed so as to cover the entire lower part of both flanges 512 of the H-shaped steel 51.

The amorphous refractory constituting the refractory layer 53 is not particularly limited, and a conventionally known amorphous refractory can be used. As an example, a castable refractory mainly composed of Al ₂ O ₃ can be preferably used. By providing the refractory layer 53, the thermal load on the copper jacket 52 can be reduced, and the durability of the water-cooled H-shaped steel 5 can be further improved.

  Filling the amorphous refractory for forming the refractory layer 53 can be performed by a conventionally known method. However, in order to increase the stability after filling, the notch portion 525 as described above is formed on the copper jacket 12. In addition to providing on the bottom surface, it is preferable to provide a wedge-shaped anchor 56 on the inner surface side of the flange of the H-shaped steel 51.

  Regarding the thickness of the refractory layer 53, the notch 525 is not formed on the bottom surface 523 of the copper jacket, and the thickness of the refractory layer 53 is 50 mm or more at the thinnest portion and 150 mm or less at the thickest portion. Is preferred. If the thickness of the refractory layer 53 is less than 50 mm, the thermal load on the copper jacket 52 is not sufficiently reduced, and the stability of the refractory layer 53 is inferior. If the thickness of the refractory layer 53 exceeds 150 mm, the cooling effect on the refractory layer 53 is reduced, and damage to the lower end of the refractory layer 53 is likely to proceed.

  The heat conductive filler 54 is made of a conventionally known heat transfer cement excellent in heat conductivity, such as a water-based cement mainly composed of graphite, in a space between the copper jacket 52 and the three U-shaped surfaces. It can be formed by filling.

  FIG. 5 is a diagram showing an overall configuration of one embodiment of the water-cooled H-shaped steel, and is a schematic cross-sectional view when viewed from a direction perpendicular to the longitudinal direction of the H-shaped steel 51. In this embodiment, two copper jackets 52 are installed on the H-shaped steel 51, and the cooling water 7 is injected from one external cold water channel 57 of the water-cooled H-shaped steel 5, and the internal cold water channel 521, the external cold water channel 57, the internal The cold water channel 521 sequentially flows and is discharged from the other external cold water channel 57. The copper jacket 52 is covered with a refractory layer 53 on the inner surface of the furnace, and is fixed to the H-shaped steel 51. As the external cold water channel 57, for example, a rubber hose made of a known heat-resistant resin, a metal water pipe, or the like can be used as appropriate.

  In the implementation state shown in FIG. 5, the H-shaped steel 51 can be effectively cooled by pouring water into the internal cold water channel 521 of the water-cooled H-shaped steel 5. According to this cooling method, the temperature rise of the H-shaped steel 51 can be suppressed, and the durability can be improved by preventing the melting due to the heat load.

  Further, the cooling effect of the lower part of the web 511 of the H-shaped steel 51 that becomes relatively high is improved, so that the upper part of the web 511 of the H-shaped steel 51 moves upward as in the conventional water-cooled H-shaped steel 6 shown in FIG. This eliminates the need for recirculation of the cooling water and prevents the water from splashing or overflowing.

<Cooling method of wall of self-melting furnace>
By using the above-described water-cooled H-shaped steel 5 as the constituent material of the wall of the self-melting furnace 1, the cooling of the H-shaped steel 51 also suppresses the temperature rise of the entire wall constituting the self-melting furnace 1, The durability against the heat load of the entire self-melting furnace 1 can also be enhanced.

  When manufacturing the wall of the self-melting furnace 1, the water-cooled H-shaped steel 5 may be formed in advance by bonding a copper jacket 52 or the like to the H-shaped steel 51 before being assembled into the wall as a structural material of the wall. preferable. The water-cooled H-shaped steel 5 formed in advance can be used as a wall structural material in the same manner as a wall manufacturing method using a conventionally known H-shaped steel.

  At this time, any of a plurality of variations of the water-cooled H-shaped steel 5 described above may be used, but for the water-cooled H-shaped steel 5a including the copper jacket 52a and the water-cooled H-shaped steel 5b including the copper jacket 52b. In addition, it is preferable to properly use them for each predetermined range in accordance with the height of heat load and the degree of risk of wear in each part in the auto-smelting furnace 1.

  The water-cooled H-shaped steel 5a provided with the copper jacket 52a has high thermal conductivity and excellent cooling ability. The water-cooled H-shaped steel 5b including the copper jacket 52b is extremely excellent in safety although the cooling efficiency is slightly inferior to that of the water-cooled H-shaped steel 5a.

  In the self-melting furnace 1, the lower part B of the reaction shaft 20 and the ceiling part C of the settler 30 have a high heat load and are greatly affected by wear due to gas flow. On the other hand, the ceiling portion A of the reaction shaft 20 and the ceiling portion D of the uptake 40 have a relatively low thermal load and are not easily subjected to wear due to the gas flow in the flash furnace.

  Therefore, as shown in FIG. 6, in the ceiling portion A of the reaction shaft 20 and the ceiling portion D of the uptake 40 having a relatively low thermal load, the wall body is configured by the water-cooled H-shaped steel 5 a including the copper jacket 52 a, In particular, in the lower part B of the reaction shaft 20 having a high heat load and the ceiling part C of the settler 30, it is preferable that the wall body is constituted by the water-cooled H-shaped steel 5b including the copper jacket 52b. By setting the wall of the self-melting furnace 1 to such a configuration, a self-melting furnace having excellent safety and high cooling efficiency can be obtained. In addition, as shown in FIG. 6, the reaction shaft ceiling part A has a ring shape made of H-shaped steel. However, as described above, the present invention can also be suitably used in such a structure. . In addition, the proper use of the water-cooled H-shaped steels 5a and 5b is not limited to the above-mentioned combination, and is used by limiting the installation range in consideration of the characteristics of each water-cooled H-shaped steel. If present, other combinations of arrangements are within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Self-melting furnace 20 Reaction shaft 21 Carry-in port 30 Settler 31 Slag hole 301 Slag 302 Mat 303 Sulfurous acid gas 40 Uptake 41 Outlet 5 Water-cooled H-shaped steel 51 H-shaped steel 52 Copper jacket 521 Internal cold water path 522 Overlay welding part 53 Refractory layer 54 Thermal Conductive Filling Material 55 Bolt 56 Anchor 57 External Cooling Channel 7 Cooling Water A Ceiling Part of Reaction Shaft 20 B Lower Part of Reaction Shaft 20 C Ceiling Part of Settler 30 D Ceiling Part of Uptake 40

Claims (9)

A water-cooled H-shaped steel constituting the wall of the heating furnace,
H-shaped steel and a copper jacket having an internal cold water channel,
The copper jacket is disposed inside a space formed by three U-shaped three surfaces formed by the H-shaped steel web and lower portions of both flanges, and is in contact with the three U-shaped surfaces, or A water-cooled H-shaped steel that is attached via a thermally conductive filler.   The water-cooled H-shaped steel according to claim 1, wherein a refractory layer made of an amorphous refractory is formed between both flanges of the H-shaped steel so as to cover a bottom surface of the copper jacket.   3. The water-cooled H-shaped steel according to claim 1, wherein the internal cold water channel is disposed at a position closer to a web of the H-shaped steel than a center position in the copper jacket.   A concave notch is formed on the bottom surface of the copper jacket, and the refractory layer is formed by filling the irregular refractory into the notch with no gap. The water-cooled H-shaped steel according to any one of claims 1 to 3.   The water cooling according to any one of claims 1 to 4, wherein the copper jacket is provided with a build-up weld portion that is subjected to build-up welding with a heat-resistant and wear-resistant alloy on at least a bottom surface near the flange tip portion of the H-shaped steel. Formula H steel.   The water-cooled H-shaped steel according to any one of claims 1 to 5, wherein the internal cooling water channel is formed in the copper jacket by a hole opening process to a copper block constituting the copper jacket.   6. A metal pipe is cast into a copper block constituting the copper jacket, and the internal cold water channel is formed in the copper jacket by the metallic pipe. Water-cooled H-shaped steel according to crab. A heating furnace having a wall body including the water-cooled H-shaped steel according to any one of claims 1 to 7,
Only the water-cooled H-shaped steel according to claim 6 is arranged in a predetermined range in the wall of the heating furnace,
Only the water-cooled H-shaped steel according to claim 7 is arranged in another predetermined range in the wall of the heating furnace. By pouring water into the internal cold water channel of the water-cooled H-shaped steel according to any one of claims 1 to 7,
A heating furnace cooling method for cooling a heating furnace wall.

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