Composite wear-resistant copper cooling wall

Abstract

The utility model relates to a composite wear-resistant copper cooling wall which comprises a body and a cooling water channel arranged in the body, the body comprises a hot face and a cold face, the hot face faces the interior of a smelting furnace, a functional groove is formed in the hot face, the body is formed by compounding a pure copper layer and a steel layer, the steel layer is compounded on the hot face of the pure copper layer, and the cold face faces the hot face. And the pure copper layer and the steel layer are kept in a tight composite state and are not separated in the thermal expansion and contraction processes of the composite wear-resistant copper cooling wall. According to the composite wear-resistant copper cooling wall provided by the embodiment of the invention, the steel layer is compounded on the hot surface, so that the overall heat resistance, corrosion resistance and wear resistance of the hot surface are enhanced on the basis of keeping the advantages of a pure copper cooling wall, and particularly, the wear resistance of the edge is greatly improved, thereby improving the integrity and non-deformability of the functional groove; intact supporting effects can be realized for inlaid steel bricks, slag crust, refractory materials and the like, and the steel bricks are not easy to fall off.

Description

Technical Field

[0001] The present application relates to a cooling device for a blast furnace, and in particular to a composite wear-resistant copper cooling wall. Background Art

[0002] Pure copper cooling stave is a cooling stave commonly used in blast furnaces. A dovetail groove is usually provided on the hot surface of the pure copper cooling stave. The dovetail groove serves as a fixed structure for inlaying refractory bricks, ramming or spraying refractory materials. During the long-term use of the pure copper cooling stave, it can support the refractory bricks or other refractory materials, thereby reducing the scouring and wear of the pure copper cooling stave by high-temperature furnace charge.

[0003] However, due to the serious erosion and wear of the hot surface of the pure copper cooling stave under high temperature furnace conditions, the edge of the dovetail groove is easily damaged, which leads to the incomplete structure of the dovetail groove and the inability to support the refractory protective layer. In severe cases, it will cause the refractory bricks or other refractory materials to fall off. As the slag hanging ability of the refractory protective layer is weakened, the protection of the pure copper cooling stave is also weakened accordingly, which reduces the service life of the pure copper cooling stave, seriously affecting the production efficiency and service life of the blast furnace.

[0004] In addition, since the structure of the functional grooves on the pure copper cooling wall is relatively simple, the cooling wall often has the problem of poor slag effect. Utility Model Content

[0005] In response to the technical problems existing in the prior art, the present application proposes a composite wear-resistant copper cooling wall to solve the problems that the hot surface of the pure copper cooling wall is severely worn during long-term use, resulting in weak strength of the functional groove structure, which is not conducive to supporting refractory materials and the functional groove structure is single.

[0006] The present application proposes a composite wear-resistant copper cooling wall, comprising a main body and a cooling water channel arranged inside the main body, the main body comprising a hot surface and a cold surface, the hot surface faces the inside of a smelting furnace and is provided with a functional groove, the main body is composited by a pure copper layer and a steel layer, wherein the steel layer is composited on the hot surface of the pure copper layer, and the pure copper layer and the steel layer remain in a tightly composite state and do not separate during the thermal expansion and contraction of the composite wear-resistant copper cooling wall.

[0007] Optionally, the steel layer includes an embedded portion embedded in the pure copper layer.

[0008] Optionally, the functional grooves are irregularly and randomly arranged on the thermal surface of the body.

[0009] Optionally, the functional groove includes a first functional groove and a second functional groove, the first functional groove is opened in the copper layer, and the second functional groove is opened and formed through the steel layer.

[0010] Optionally, the cross-sectional shape of the functional groove along the height direction of the body is any one of the following shapes: dovetail shape, double dovetail shape, T shape, V shape or W shape.

[0011] Optionally, the functional groove comprises a third functional groove and a fourth functional groove, the convex teeth on two adjacent sides of the third functional groove are of equal height, and the convex teeth on two adjacent sides of the fourth functional groove are of unequal height.

[0012] Optionally, a longitudinal gap is provided on the hot surface, and the longitudinal gap is formed on the steel layer along the length direction of the main body.

[0013] Optionally, the cooling water channel is arranged in the copper layer of the composite copper cooling wall body and is formed by deep hole drilling.

[0014] Optionally, the cross-section of any one of the cooling water channels has a shape of any one of the following forms: a single-hole shape, a double-hole shape, or a triple-hole shape.

[0015] Optionally, a copper plug is provided in a port connecting the cooling water channel and the side of the composite copper cooling wall body, and the copper plug is used to block the cooling water channel so that the coolant in the cooling water channel flows in or out from a preset inlet and outlet.

[0016] Optionally, the steel layer is a stainless steel layer.

[0017] Optionally, the composite method is any one of the following forms: mechanical connection, composite connection, laser cladding or electroplating.

[0018] The composite wear-resistant copper cooling stave proposed in the embodiment of the present application enhances the wear resistance of the hot surface on the basis of retaining the advantages of the pure copper cooling stave by composite steel layer on the hot surface, so that the wear resistance of the edge of the functional groove is improved, and then the structural strength of the functional groove is enhanced. In this way, it is beneficial for the pure copper cooling stave to maintain the slag skin formed on the hot surface, the refractory material fixed in the functional groove, and the steel brick embedded in the functional groove. In addition, the diversity of the functional groove structure further improves the slag hanging ability of the composite wear-resistant copper cooling stave. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Below, the preferred embodiments of the present application will be further described in detail with reference to the accompanying drawings, wherein:

[0020] Figure 1 This is a structural view of the first composite wear-resistant copper cooling wall of an embodiment of the present application;

[0021] Figure 2 yes Figure 1 A view of the structure shown;

[0022] Figure 3 This is a structural view of a second composite wear-resistant copper cooling wall according to an embodiment of the present application;

[0023] Figure 4 yes Figure 3 A B-direction view of the structure shown;

[0024] Figure 5 yes Figure 3 A partial enlarged view of the D portion of the structure shown;

[0025] Figure 6 This is a structural view of a third composite wear-resistant copper cooling wall according to an embodiment of the present application;

[0026] Figure 7 yes Figure 6 A partial enlarged view of the E portion of the structure shown;

[0027] Figure 8 This is a structural view of a fourth composite wear-resistant copper cooling wall according to an embodiment of the present application;

[0028] Fig. 9 yes Figure 8 A C-direction view of the structure shown;

[0029] Fig.10 This is a structural view of a fifth composite wear-resistant copper cooling wall according to an embodiment of the present application;

[0030] Fig.11 This is a structural view of a sixth composite wear-resistant copper cooling wall according to an embodiment of the present application;

[0031] Fig.12 yes Fig.11 Structural view of section F in the structure shown.

[0032] Description of reference numerals:

[0033] 101. body; 102. cooling water channel; 103. hot surface; 104. cold surface; 10. pure copper layer; 20. steel layer; 106. copper plug; 107. inlet; 108. outlet; 202. embedded part; 105. functional groove; 201. second composite wear-resistant copper cooling wall; 100. first composite wear-resistant copper cooling wall; 301. third composite wear-resistant copper cooling wall; 1051. first functional groove; 1052. second functional groove; 401. fourth composite wear-resistant copper cooling wall; 402. longitudinal gap; 501. fifth composite wear-resistant copper cooling wall; 1053. third functional groove; 902. convex tooth; 601. sixth composite wear-resistant copper cooling wall; 1054. fourth functional groove. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] In the following detailed description, reference may be made to the various specification drawings that are part of the present application and are used to illustrate specific embodiments of the present application. In the accompanying drawings, similar reference numerals describe substantially similar components in different figures. The various specific embodiments of the present application are described below in sufficient detail so that a person of ordinary skill in the art with relevant knowledge and skills in the art can implement the technical solutions of the present application. It should be understood that other embodiments may also be used or structural, logical or electrical changes may be made to the embodiments of the present application.

[0036] The composite wear-resistant copper cooling staves proposed in the embodiments of the present application have various forms, and the composite wear-resistant copper cooling staves of different structural forms are distinguished as first, second and third below.

[0037] Figure 1 This is a structural view of the first composite wear-resistant copper cooling wall of an embodiment of the present application. Figure 2 yes Figure 1 A-axis view of the structure shown. Figure 1 and Figure 2 As shown, the first composite wear-resistant copper cooling stave 100 includes a body 101 and a cooling water channel 102 disposed inside the body. Figure 1 As shown, the body 101 includes a hot surface 103 and a cold surface 104, and the hot surface 103 faces the inside of the smelting furnace and is provided with a functional groove 105. The functional groove 105 is generally provided along the width direction of the cooling wall, but the functional groove located in the middle of the cooling wall needs to be divided into two sections, so that the position between the two sections of the functional groove can be used to install the positioning pin. The body 101 is composed of a pure copper layer 10 and a steel layer 20, wherein the steel layer 20 is compounded on the hot surface of the pure copper layer 10.

[0038] In some embodiments of the present application, optionally, the composite method of the pure copper layer 10 and the steel layer 20 can be any one of the following forms: mechanical connection, composite connection, laser cladding or electroplating. That is, the steel layer can be combined with the metal body (pure copper layer) by mechanical connection, composite connection, laser cladding or electroplating. In some embodiments of the present application, optionally, the mechanical connection includes but is not limited to: mechanical inlay, bolt connection, welding, etc. In some embodiments of the present application, optionally, the composite connection includes but is not limited to: solid-solid composite (for example: rolling composite, explosion composite, extrusion composite, drawing composite, forging composite, welding composite, diffusion composite, electric pulse composite, etc.) and solid-liquid composite (for example: coating casting composite, electroslag coating casting, composite wire casting and pulling, reverse solidification composite, dual solidification composite, spray deposition composite, liquid-solid casting composite, brazing composite, inlay casting composite, etc.). In some embodiments of the present application, optionally, the steel layer 20 is a stainless steel layer. Of course, the steel layer can also be made of other steel materials, not limited to stainless steel.

[0039] Combining the steel layer on the hot surface of the pure copper layer enhances the overall heat resistance, corrosion resistance and wear resistance of the hot surface, especially the wear resistance of the edge of the functional groove has been significantly improved, so that the integrity of the functional groove can be maintained without deformation. In this way, the functional groove can provide perfect support for inlaid steel bricks, slag skin, refractory materials, etc., and is not easy to fall off.

[0040] like Figure 1 As shown, in some embodiments of the present application, optionally, the cooling water channel 102 is arranged in the pure copper layer 10 of the body 101 of the composite wear-resistant copper cooling stave, and is formed by deep hole drilling. Further, the specific shape of the cooling water channel 102 can be set according to demand, and the shape of the cross section of any cooling water channel 102 can be any one of the following multiple structural forms: single hole shape, double hole shape or triple hole shape. In some embodiments, optionally, the same composite wear-resistant copper cooling stave can include two or more cooling water channels 102 with different cross-sectional shapes. In addition, in some embodiments of the present application, a copper plug 106 is provided in the port connecting the cooling water channel 102 and the side of the composite copper cooling stave body, and the copper plug 106 is used to block or release the passage inside the cooling water channel 102, so that the coolant in the cooling water channel 102 flows in from the preset inlet 107 and flows out from the preset outlet 108.

[0041] Figure 3 This is a structural view of the second composite wear-resistant copper cooling wall of an embodiment of the present application. Figure 4 yes Figure 3 B-direction view of the structure shown. Figure 3 and Figure 4As shown, the second composite wear-resistant copper cooling stave 201 is similar in structure to the first composite wear-resistant copper cooling stave 100 and is also made of copper-steel composite plates. The only difference between the two is that the composite forms of the steel layer 20 and the pure copper layer 10 are different. Specifically, the bonding surface between the pure copper layer 10 and the steel layer 20 of the first composite wear-resistant copper cooling stave 100 is a plane, while the steel layer 20 of the second composite wear-resistant copper cooling stave 201 includes an embedded portion 202 embedded in the pure copper layer 10. The embedded portion 202 is embedded in the pure copper layer 10, so that the composite strength of the steel layer 20 and the pure copper layer 10 is enhanced, which can improve the service life of the composite wear-resistant copper cooling stave.

[0042] In some embodiments of the present application, optionally, the cross-sectional shape of the functional groove 105 along the height direction of the body is any one of the following shapes: dovetail shape, double dovetail shape, T shape, V shape or W shape.

[0043] Figure 5 yes Figure 3 A partial enlarged view of the D section of the structure shown. Figure 5 As shown, the cross-sectional shape of the functional groove of the first composite wear-resistant copper cooling wall along the height direction of the body is a dovetail shape. Figure 6 This is a structural view of the third composite wear-resistant copper cooling wall of an embodiment of the present application. Figure 7 yes Figure 6 A partial enlarged view of the E part of the structure shown. Figure 3 , Figure 5 , Figure 6 and Figure 7 As shown, the structure of the third composite wear-resistant copper cooling stave 301 is similar to that of the second composite wear-resistant copper cooling stave 201, and the difference between the two is that the functional groove 105 of the third composite wear-resistant copper cooling stave 301 is a T-shaped groove, that is, the cross-sectional shape of the functional groove 105 of the third composite wear-resistant copper cooling stave 301 along the height direction of the body 101 is T-shaped. Fixing the steel brick in the T-shaped functional groove can enhance the combined strength of the steel brick and the cooling stave, thereby improving the ability of the cooling stave to retain the slag skin.

[0044] In some embodiments of the present application, optionally, the opening positions of the functional grooves on the hot surface of the body are irregularly and randomly arranged. Figure 8 It is a structural view of the fourth composite wear-resistant copper cooling wall of an embodiment of the present application. Fig. 9 yes Figure 8 C-direction view of the structure shown. Fig.10 yes Figure 8 A partial view of the F section in the structure shown. Figure 8 , 10 And compare Figure 1As shown, the structure of the fourth composite wear-resistant copper cooling stave 401 is similar to that of the first composite wear-resistant copper cooling stave 100, and also includes a body 101 and a cooling water channel 102 located inside the body. The body 101 is made of a copper-steel composite plate, and the steel layer 20 is located on the hot surface 103 of the pure copper layer 10. Among them, the difference from the first composite wear-resistant copper cooling stave 100 is that the functional groove 105 on the fourth composite wear-resistant copper cooling stave 401 includes a first functional groove 1051 and a second functional groove 1052, the first functional groove 1051 is opened in the pure copper layer 10, and the second functional groove 1052 is opened through the steel layer 20. On the basis of setting the functional groove in the copper layer, opening the functional groove through the steel layer can increase the surface area of ​​the hot surface and improve the slag hanging capacity of the cooling stave. In some embodiments of the present application, optionally, a steel brick is provided in the functional groove. In addition, with respect to the shape of the functional groove, the first functional groove 1051 of the fourth composite wear-resistant copper cooling stave 401 and the second functional groove 1052 opened through the steel layer 20 are both dovetail-shaped. Of course, the cross-sectional shape of the first functional groove 1051 or the second functional groove 1052 along the height direction of the body can also be any one of the following shapes: double dovetail shape, T shape, V shape, W shape. The shapes of the first functional groove 1051 or the second functional groove 1052 on the same composite wear-resistant copper cooling wall can be the same or different.

[0045] Continue to see Figure 8 As shown, the hot surface 103 includes a longitudinal gap 402, which is formed on the steel layer 20 along the length direction of the body 101. The longitudinal gap 402 can be arranged to be distributed at equal distances or at unequal distances. The longitudinal gap 402 can release the stress of the composite wear-resistant copper cooling wall.

[0046] Fig.10 1 is a structural view of the fifth composite wear-resistant copper cooling wall of the present application embodiment. Fig.10 And compare Figure 1As shown, the structure of the fifth composite wear-resistant copper cooling stave 501 is similar to that of the first composite wear-resistant copper cooling stave 100. The difference between the two is that the functional groove 105 of the fifth composite wear-resistant copper cooling stave 501 includes a first functional groove 1051 and a second functional groove 1052 arranged on a portion of the steel layer, and the first functional groove 1051 and the second functional groove are both V-shaped grooves. In some embodiments of the present application, optionally, the width of the convex teeth between two adjacent V-shaped grooves is particularly small. In order to distinguish it from the V-shaped grooves with a particularly large convex tooth width between adjacent V-shaped grooves, the two adjacent V-shaped grooves with particularly small convex tooth widths are called W-shaped grooves. That is, in some embodiments of the present application, optionally, the functional groove can be a W-shaped groove. And, the composite form of the partial steel layer 20 and the pure copper layer 10 of the fifth composite wear-resistant copper cooling stave 501 is an embedded composite, that is, the partial steel layer has an embedded portion 202, and the embedded portion 202 is embedded in the pure copper layer 10. The functional groove has a variety of combinations, which can enhance the castable and slag hanging capacity of the cooling stave.

[0047] In some embodiments of the present application, optionally, the functional groove includes a third functional groove and a fourth functional groove, the heights from the two side edges where the third functional groove connects to the steel layer to the lowest point of the third functional groove are equal, and the heights from the two side edges where the fourth functional groove connects to the steel layer to the lowest point of the fourth functional groove are not equal. Fig.11 It is a structural view of the sixth composite wear-resistant copper cooling wall of an embodiment of the present application. Fig.12 yes Fig.11 The structure of the F section in the structure shown. Fig.11 and Fig.12 As shown, the structure of the sixth composite wear-resistant copper cooling stave 601 is similar to that of the first composite wear-resistant copper cooling stave 100, and the difference between the two is that a third functional groove 1053 and a fourth functional groove 1054 are provided on the hot surface 103 of the body 101, and the convex teeth 902 on the adjacent two sides of the third functional groove 1053 are not of equal height, and the convex teeth 902 on the adjacent two sides of the fourth functional groove 1054 are of equal height. The interval between the third functional groove 1053 and the fourth functional groove 1054 can be adjusted as needed. The provision of the third functional groove 1053 and the fourth functional groove 1054 enables the hot surface to have convex teeth of unequal heights, and the convex teeth are also slag structures. Providing slag structures of varying heights on the hot surface of the composite wear-resistant copper cooling stave can enhance the castable and slag capacity.

[0048] The composite wear-resistant copper cooling stave proposed in the embodiment of the present application enhances the wear resistance of the hot surface by compounding the steel layer on the hot surface while retaining the advantages of the pure copper cooling stave, thereby improving the wear resistance of the edge of the functional groove, thereby enhancing the structural strength of the functional groove. In this way, the pure copper cooling stave is conducive to maintaining the slag skin formed on the hot surface and the refractory material in the functional groove.

[0049] In addition, the functional grooves on the composite wear-resistant copper cooling wall in the present application have various forms and the positions of the functional grooves also have various forms. Functional grooves of different forms are combined and arranged at different positions to further improve the slag hanging capacity of the composite wear-resistant copper cooling wall.

[0050] The above embodiments are only used to illustrate the present application, and are not intended to limit the present application. Ordinary technicians in the relevant technical field may make various changes and modifications without departing from the scope of the present application. Therefore, all equivalent technical solutions should also fall within the scope disclosed in the present application.

Claims

1. A composite wear-resistant copper cooling wall, comprising a body and a cooling water channel arranged inside the body, the body comprising a hot surface and a cold surface, the hot surface faces the inside of a smelting furnace and is provided with a functional groove, characterized in that: The body is composed of a pure copper layer and a steel layer, wherein the steel layer is composited on the hot surface of the pure copper layer, and the pure copper layer and the steel layer remain in a tightly composite state without separation during the thermal expansion and contraction of the composite wear-resistant copper cooling wall.

2. The composite wear-resistant copper cooling stave according to claim 1, characterized in that: The steel layer includes an embedded portion embedded in the pure copper layer.

3. The composite wear-resistant copper cooling wall according to claim 1, characterized in that: The functional grooves are irregularly and randomly arranged on the thermal surface of the body.

4. The composite wear-resistant copper cooling stave according to claim 3, characterized in that: The functional groove includes a first functional groove and a second functional groove, the first functional groove is opened in the copper layer, and the second functional groove is opened through the steel layer.

5. The composite wear-resistant copper cooling stave according to claim 4, characterized in that: The cross-sectional shape of the functional groove along the height direction of the body is any one of the following shapes: dovetail shape, double dovetail shape, T shape, V shape or W shape.

6. The composite wear-resistant copper cooling stave according to claim 1, characterized in that: The functional groove comprises a third functional groove and a fourth functional groove. The convex teeth on two adjacent sides of the third functional groove are of unequal heights, and the convex teeth on two adjacent sides of the fourth functional groove are of equal heights.

7. The composite wear-resistant copper cooling stave according to claim 1, characterized in that: A longitudinal gap is provided on the hot surface, and the longitudinal gap is formed on the steel layer along the length direction of the main body.

8. The composite wear-resistant copper cooling stave according to claim 1, characterized in that: The cooling water channel is arranged in the copper layer of the composite wear-resistant copper cooling wall body and is formed by deep hole drilling.

9. The composite wear-resistant copper cooling stave according to claim 8, characterized in that: The cross-section of any one of the cooling water channels is in any one of the following forms: a single-hole shape, a double-hole shape or a triple-hole shape.

10. The composite wear-resistant copper cooling stave according to claim 9, characterized in that: A copper plug is provided in a port communicating with the side of the composite wear-resistant copper cooling wall body, and the copper plug is used to block the cooling water channel so that the coolant in the cooling water channel flows in or out from a preset inlet and outlet.

11. The composite wear-resistant copper cooling stave according to claim 1, characterized in that: The steel layer is a stainless steel layer.

12. The composite wear-resistant copper cooling stave according to claim 1, characterized in that: The composite method of the pure copper layer and the steel layer is any one of the following forms: mechanical connection, composite connection, laser cladding or electroplating.

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