A new type of copper cooling wall with hot surface structure

Abstract

A copper cooling stave with a novel hot surface structure includes a copper cooling stave body, in which at least one cooling water channel is provided, and is characterized in that: the hot surface of the copper cooling stave body is provided with a plurality of raised copper blocks distributed in a matrix or dispersed manner, and the raised copper blocks and the copper cooling stave body are an integral structure; wherein at least one of the raised copper blocks is provided with a steel material protective member that fully surrounds or semi-encloses the raised copper block. The hot surface structure of the copper cooling stave of the present invention can improve the wear resistance and slag hanging capacity of the hot surface of the copper cooling stave body, can more effectively protect the copper cooling stave body, and is more convenient to maintain, saving maintenance time and cost.

Description

Technical Field

[0001] The invention relates to furnace body cooling equipment of a blast furnace, in particular to a copper cooling wall with a novel hot surface structure. Background Art

[0002] The blast furnace wall (including the furnace shell, cooling equipment, refractory materials or self-condensing slag skin, etc.) is one of the key factors affecting the longevity of the blast furnace. The service life of the blast furnace wall is the result of the interaction between the furnace cooling system, refractory materials (or self-condensing slag skin) and the blast furnace smelting process. The furnace belly, furnace waist and lower part of the blast furnace are in the high temperature and melting zone, and the operating temperature can reach above 1200℃. Under the long-term combined effect of many destructive factors such as high-temperature gas flow impact, liquid slag iron erosion, charge wear, chemical erosion of alkali metals and zinc, the cooling equipment in this area is prone to overheating. Therefore, the fundamental way to extend the life of the blast furnace is to establish a cooling system with a reasonable structure and no overheating under the conditions of blast furnace smelting.

[0003] The cooling staves of modern blast furnaces have been improved and perfected for decades, from early cast iron cooling staves to today's copper cooling staves. The main functions of copper cooling staves are: (1) Thanks to the high thermal conductivity of copper, it can provide sufficient cooling strength and promptly remove the blast furnace heat on the wall through cooling water to ensure that the furnace body does not overheat; (2) Provide support and cooling for the refractory materials (or self-condensing slag skin) of the blast furnace lining. In the early stage after the blast furnace is opened, the furnace lining is mainly formed by refractory bricks or sprayed amorphous refractory materials; during the use of the blast furnace, the refractory materials are prone to erosion and damage. When the refractory materials are eroded and damaged to a certain extent, it is necessary to rely on the formation of a stable self-protective slag skin on the hot surface of the cooling stave to maintain the long-term furnace lining.

[0004] With the large-scale and long-term use of copper cooling staves, most of the copper cooling staves of blast furnaces can operate smoothly. The copper cooling staves of a few blast furnaces have not reached their expected service life. The cause of the damage to the copper cooling stave may be a comprehensive result caused by a certain factor or the interaction of multiple factors. One of the main characteristics of copper cooling stave damage is the local wear of the hot surface. As the hot surface of the copper cooling stave is constantly worn and eroded, the copper cooling stave is eventually damaged. Local wear is mainly material wear, supplemented by coal gas flow carrying dust scouring. The scouring direction may be from top to bottom, or there may be multiple directions (for example, coal gas flow carrying dust may also scour from bottom to top). The copper cooling staves used in the middle and lower parts of the furnace body, the furnace waist and the furnace belly have always had a dovetail groove structure as the hot surface structure. As the hot surface of the copper cooling stave is constantly worn and eroded, the dovetail groove structure will be worn flat and unable to smoothly hang the slag skin, and even the hot surface will be damaged and leak, causing damage to the copper cooling stave. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a copper cooling stave with a new type of hot surface structure. The hot surface structure of the copper cooling stave can improve the wear resistance and slag hanging capacity of the hot surface of the copper cooling stave body, and can more effectively protect the copper cooling stave body. The technical solution adopted is as follows:

[0006] A copper cooling stave with a novel hot surface structure comprises a copper cooling stave body, in which at least one cooling water channel is arranged, and is characterized in that: the hot surface of the copper cooling stave body is provided with a plurality of raised copper blocks distributed in a lattice or dispersed manner, and the raised copper blocks and the copper cooling stave body are an integral structure; wherein at least one of the raised copper blocks is provided with a steel material protective part which fully surrounds or semi-encloses the raised copper block for protection.

[0007] The hot surface of the copper cooling stave body refers to the side of the copper cooling stave body facing the blast furnace cavity during operation; the cold surface of the copper cooling stave body refers to the side of the copper cooling stave body facing away from the blast furnace cavity during operation. The hot surface structure composed of raised copper blocks, steel protective parts, etc. can improve the wear resistance and slag hanging capacity of the hot surface of the copper cooling stave body, and can more effectively protect the copper cooling stave body. The raised copper block and the copper cooling stave body are an integral structure, which means that the raised copper block and the copper cooling stave body are connected as a whole, and there is no need to connect the raised copper block and the copper cooling stave body through a connecting structure.

[0008] In actual design, according to actual needs, steel protective parts can be installed on all raised copper blocks, or only on a part of the raised copper blocks.

[0009] The present invention eliminates the dovetail groove and strip groove rib structure of the traditional structure on the hot surface of the copper cooling stave body, and replaces them with a plurality of raised copper blocks distributed in a dot matrix or dispersed manner and combined with steel material protection parts. The raised copper blocks with steel material protection parts installed and the raised copper blocks without steel material protection parts jointly form the hot surface structure. The raised copper blocks serve as the core of the anchoring and cooling functions; the raised copper blocks with steel material protection parts installed play a positioning role for the steel material protection parts and can absorb the heat of the steel material protection parts in time (the heat on the raised copper blocks is taken away by the water flowing in the cooling water channel of the copper cooling stave body). The raised copper blocks without steel material protection parts installed strengthen the rapid cooling and slag coagulation of the hot surface. The steel material protection parts have high strength and high wear resistance, and can effectively resist the scouring of materials and gas flow in the blast furnace; they have better affinity for self-condensing slag skin, thereby playing a role in firmly hanging slag; they play a good protective role for the raised copper blocks, which can effectively prevent the raised copper blocks from being worn, and ensure that the raised copper blocks can play a rapid cooling role.

[0010] Usually, each cooling water channel has an inlet and outlet water pipe at both ends, and the inlet and outlet water pipes are located on the cold surface of the copper cooling wall body. The two inlet and outlet water pipes are respectively connected to the water inlet and outlet ends of the corresponding cooling water channel.

[0011] The copper cooling stave body can be composed of an integral forged copper plate or an integral rolled copper plate, and the material of the integral forged copper plate or the integral rolled copper plate can be copper or copper alloy. Through mechanical processing (such as milling), by removing the material around the raised copper block on the hot surface of the copper cooling stave body, a plurality of raised copper blocks distributed in a dot matrix or dispersed manner are formed on the hot surface of the copper cooling stave body; after the raised copper blocks are formed, steel material protective parts are installed on the raised copper blocks. For example, a transverse groove can be first milled on the hot surface of the copper cooling stave body, and then a longitudinal groove can be processed to form an array of raised copper blocks. Through mechanical processing (such as drilling), a channel is formed on it (a water channel plug is installed in the channel if necessary), and these channels are interconnected to form a cooling water channel (according to the number and layout of the designed cooling water channels, one or more cooling water channels can be connected); then the inlet and outlet water pipes are installed (the inlet and outlet water pipes can be fixed on the cold surface of the copper cooling stave body by welding) to form a cooling system for the copper cooling stave body.

[0012] The copper cooling stave body can also be cast from copper or copper alloy. By designing a suitable mold, a plurality of raised copper blocks connected to the copper cooling stave body in a dot matrix or dispersed manner are cast at the same time as the copper cooling stave body is cast; after the raised copper blocks are formed, steel protective parts are installed on the raised copper blocks. The cooling water channel can be composed of a copper tube embedded in the copper cooling stave body, and the parts of the two ends of the copper tube extending to the cold surface of the copper cooling stave body respectively constitute an inlet and outlet water pipe. Before casting, a bent copper tube is placed in the mold in advance (according to the number of cooling water channels designed, the corresponding number of copper tubes are placed in the required position), and after casting, the copper cooling stave body embeds the copper tube (only the two ends of the copper tube are left outside the copper cooling stave body); a copper tube forms a cooling water channel in the copper cooling stave body, and the parts of the two ends of the copper tube extending from the cold surface of the copper cooling stave body serve as inlet and outlet water pipes.

[0013] The raised copper blocks on the hot surface of the copper cooling stave body may have the same size, or the hot surface of the copper cooling stave body may have raised copper blocks of multiple different sizes (for example, raised copper blocks of two different sizes). In a preferred embodiment, the hot surface of the copper cooling stave body is provided with raised copper blocks of two different sizes, and the raised copper blocks of two different sizes are alternately arranged on the hot surface of the copper cooling stave body.

[0014] In a preferred embodiment, the raised copper blocks are arranged in multiple rows on the hot surface of the copper cooling wall body, and the raised copper blocks in the same row can be arranged horizontally (i.e., arranged in sequence from left to right) or obliquely (for example, arranged in sequence from the lower left to the upper right, or arranged in sequence from the upper left to the lower right).

[0015] Usually, the above steel material protection parts are distributed in a dot matrix or dispersed manner on the hot surface of the copper cooling stave body, and are positioned and cooled by the raised copper blocks. The arrangement of the steel material protection parts can be similar to the raised copper blocks. After the steel material protection parts are installed on the hot surface of the copper cooling stave body, the hot surface can be sprayed, poured and rammed with refractory materials, or refractory bricks can be installed.

[0016] In a preferred embodiment, after the steel protection members are mounted on the raised copper block, they are arranged in multiple rows on the hot surface of the copper cooling wall body, and there is a gap between two adjacent steel protection members in the same row. The steel protection members in the same row can be arranged horizontally (i.e., arranged in sequence from left to right) or obliquely (e.g., arranged in sequence from the lower left to the upper right, or arranged in sequence from the upper left to the lower right).

[0017] In a more preferred solution, the steel protection parts are arranged in multiple rows on the hot surface of the copper cooling stave body, and the steel protection parts in each row are arranged in sequence from top to bottom; the steel protection parts in the same row are arranged in sequence from left to right, and the positions of the steel protection parts in two adjacent rows are staggered in the left-right direction (i.e., in two adjacent rows, the position of the steel protection parts in one row corresponds to the position of the gap between two adjacent steel protection parts in the other row). Common forms of hot surface wear of copper cooling staves are longitudinal (i.e., vertical) linear scouring marks. This preferred hot surface structure will form multiple staggered steel islands on the hot surface. When the gas flow and charge are scouring, they will be affected by the steel islands to form S-shaped irregular turbulence, thereby reducing the flow rate and the degree of scouring damage to the hot surface.

[0018] In another more preferred embodiment, the steel material protection members are arranged in multiple rows on the hot surface of the copper cooling stave body, and the steel material protection members in each row are arranged in sequence from top to bottom; the steel material protection members in the same row are arranged in sequence from left to right, and the positions of the steel material protection members in two adjacent rows are aligned with each other in the left-right direction. For example, when the number of steel material protection members in each row is the same, the steel material protection members are arranged in a matrix of multiple rows and columns on the hot surface of the copper cooling stave body.

[0019] In another more preferred embodiment, the raised copper blocks are arranged in multiple rows on the hot surface of the copper cooling wall body, with gaps between adjacent rows of raised copper blocks; there is a gap between adjacent two raised copper blocks in the same row; at least one raised copper block in each row of raised copper blocks is installed with a steel protective piece. In each row of raised copper blocks, only a portion of the raised copper blocks may be installed with steel protective pieces (the number and position of the steel protective pieces can be flexibly arranged according to design requirements), or all raised copper blocks may be installed with steel protective pieces. The sizes of the raised copper blocks in the same row may be the same or different (for example, the raised copper blocks have a variety of different lateral sizes). In a more preferred embodiment, in each row of raised copper blocks, a portion of the raised copper blocks are installed with steel protective pieces, and the raised copper blocks with steel protective pieces and the raised copper blocks without steel protective pieces are arranged alternately. During processing, a plurality of strip grooves arranged side by side can be first processed on the hot surface of the copper cooling stave body, and a strip protrusion is formed between two adjacent strip grooves; then, according to the design requirements of the position and size, a plurality of grooves are processed in the length direction of the strip protrusion (the material of the strip protrusion in this position is removed) to form the required protruding copper block. The cross-section of the above-mentioned strip groove can be rectangular or trapezoidal. In a more preferred embodiment, the above-mentioned steel material protective part covers the side faces and top face of the corresponding protruding copper block (the top face of the protruding copper block refers to the side of the protruding copper block facing the furnace cavity after being installed in the blast furnace), so that the height of the steel material protective part protruding inward exceeds the top face of the protruding section (for example, exceeds 10-60mm), thereby forming a plurality of steel material islands, and the steel material islands and the protruding sections are staggered in height, which is conducive to reducing the flow rate of the gas flow or the charge, and reducing the degree of scouring damage to the hot surface of the copper cooling stave body.

[0020] Usually, the above-mentioned steel protective part is provided with a through hole, groove or notch matching the raised copper block. When the steel protective part is installed on the raised copper block, the raised copper block is embedded in the corresponding through hole, groove or notch on the steel protective part to position and support the steel protective part.

[0021] The steel protective piece covers all or part of the side surfaces and top surface of the raised copper block. For example: (1) When the raised copper block is in the shape of a hexahedron, the raised copper block has an upper side surface, a lower side surface, a left side surface, a right side surface and a top surface. The steel protective member may cover all five surfaces of the raised copper block, or may only cover the upper side surface, the lower side surface, the left side surface and the right side surface of the raised copper block, or may only cover a part of the upper side surface, the lower side surface, the left side surface and the right side surface of the raised copper block (such as only covering the upper side surface, the left side surface and the right side surface of the raised copper block, or only covering the lower side surface, the left side surface and the right side surface of the raised copper block, or only covering the upper side surface and the left side surface of the raised copper block, etc.), or may cover the top surface and a part of the side surface of the raised copper block; (2) When the raised copper block is in the shape of a cylinder, the raised copper block has a cylindrical side surface and a circular top surface. The steel protective member may cover all the cylindrical side surfaces and the circular top surface of the raised copper block, or may only cover the cylindrical side surface of the raised copper block. Among them, the above-mentioned steel material protection piece covers all the side surfaces and the top surface of the raised copper block, which is most conducive to protecting the raised copper block from wear.

[0022] Usually, one steel material protective part corresponds to one raised copper block. Alternatively, one steel material protective part may correspond to multiple raised copper blocks, that is, multiple raised copper blocks are used to jointly position and support the steel material protective part. Alternatively, multiple steel material protective parts may correspond to one raised copper block, that is, multiple steel material protective parts are combined and fixed on one raised copper block. Alternatively, multiple steel material protective parts may correspond to multiple raised copper blocks, that is, multiple steel material protective parts are combined and fixed on multiple raised copper blocks, and the combined steel material protective parts are jointly positioned and supported by these multiple raised copper blocks.

[0023] In the preferred embodiment, the material of the above-mentioned steel material protection part is cast iron, cast steel, wear-resistant alloy steel or stainless steel. When the material of the steel material protection part is cast iron, cast steel, wear-resistant alloy steel or stainless steel, its thermal conductivity is much higher than that of conventional refractory materials (thermal conductivity: ordinary cast iron is 31W / (m•K), ordinary carbon steel is 45W / (m•K), and conventional refractory material SiC is 6.5W / (m•K)). The hot surface temperature of the steel material protection part is correspondingly much lower than that of the refractory material (about 400-450℃ lower). The lower the temperature, the easier it is to form slag skin, which is more conducive to slag protection. Moreover, steel and iron steel material protection parts are more friendly to molten iron, and are easy to hang on to form a stable slag skin layer for protection. At the same time, it is conducive to dividing the slag skin into small pieces, which is not easy to fall off on a large scale. A steel material protection part is usually made of the same material as a whole.

[0024] The shape of the above-mentioned steel material protection part can be circular, square or other polygonal (such as regular hexagon, regular octagon, prism, etc.); the shape of the steel material protection part can also be any other shape, and can be a symmetrical structure or an asymmetrical structure.

[0025] The steel material protection part can be fixed on the raised copper block by interference fit, bonding, welding, threaded connection or bolt locking, or fixed on the boss by a combination of various forms. For example, the steel material protection part is connected to the copper cooling wall body or the raised copper block by countersunk bolts, and the countersunk bolts can be selected in different distribution positions, different quantities, and different bolt styles according to actual conditions to meet the firmness requirements.

[0026] The hot surface structure of the copper cooling stave of the present invention is completely different from the existing dovetail slot hot surface structure and has the following beneficial effects compared with the prior art:

[0027] (1) The toughness and compressive strength of steel protective parts are much higher than those of conventional refractory bricks. Unlike refractory bricks, they are not easily cracked and damaged by thermal shock and chemical erosion in the furnace. The hardness of steel protective parts is higher than that of the copper cooling wall body (the hardness of common steel 20# 35# 40# is HB 110-229, while the hardness of pure copper material is HB 35-45), and the wear resistance is better;

[0028] (2) It can not only give full play to the rapid slag coagulation ability of the copper blocks protruding on the hot surface of the copper cooling wall, but also utilize the iron slag affinity of the steel material protective parts to firmly hang the slag and form a stable slag skin protective layer;

[0029] (3) Compared with the dovetail groove hot surface structure of the traditional copper cooling wall, the hot surface structure of the present invention can reduce the copper material consumption by 30%-70%, thereby reducing the copper cooling wall procurement cost of steel plant users and saving money. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of the copper cooling wall of the preferred embodiment 1 of the present invention when no steel material protection part is installed;

[0031] Figure 2 is a stereogram of a copper cooling stave according to a preferred embodiment 1 of the present invention;

[0032] Figure 3 is a three-dimensional diagram of the copper cooling wall of the preferred embodiment 1 of the present invention from another angle;

[0033] Figure 4 1 is a schematic structural diagram of a copper cooling wall according to a preferred embodiment 1 of the present invention;

[0034] Figure 5 yes Figure 4 AA section view;

[0035] Figure 6 yes Figure 4 BB cross-section diagram;

[0036] Figure 7 Schematic diagram of the structure of the copper cooling wall of the preferred embodiment 2 of the present invention;

[0037] Figure 8 Schematic diagram of the structure of the copper cooling wall of the preferred embodiment 3 of the present invention;

[0038] Fig. 9 Schematic diagram of the structure of the copper cooling wall of the preferred embodiment 4 of the present invention;

[0039] Fig.10 Schematic diagram of the structure of the copper cooling wall of the preferred embodiment 5 of the present invention;

[0040] Fig.11 Schematic diagram of the structure of the copper cooling wall of the preferred embodiment 6 of the present invention;

[0041] Fig.12 Schematic diagram of the structure of the copper cooling wall of the preferred embodiment 7 of the present invention;

[0042] Fig.13 Schematic diagram of the structure of the copper cooling wall of the preferred embodiment 8 of the present invention;

[0043] Fig.14 Schematic diagram of the structure of the copper cooling wall of the preferred embodiment 9 of the present invention;

[0044] Fig.15 is a schematic diagram of the hot surface spoiler of the preferred embodiment 9 of the present invention;

[0045] Fig.16 1 is a schematic structural diagram of a copper cooling wall according to a preferred embodiment 10 of the present invention;

[0046] Fig.17 1 is a schematic structural diagram of a copper cooling wall according to a preferred embodiment 11 of the present invention;

[0047] Fig.18 1 is a schematic structural diagram of a copper cooling wall according to a preferred embodiment 12 of the present invention;

[0048] Fig.19 yes Fig.18 DD section diagram (partial);

[0049] Fig. 20 yes Fig.18 EE cross-section diagram (partial);

[0050] Fig.21 It is a schematic diagram of the structure of the copper cooling wall of the preferred embodiment 13 of the present invention. DETAILED DESCRIPTION

[0051] Example 1.

[0052] like Figure 1-Figure 6As shown, in this embodiment, the copper cooling stave of the novel hot surface structure includes a copper cooling stave body 1, in which at least one (such as four) cooling water channels 2 are provided; a plurality of protruding copper blocks 3 are distributed in a dispersed manner on the hot surface 11 of the copper cooling stave body 1, and the protruding copper blocks 3 and the copper cooling stave body 1 are an integral structure; at least one of the protruding copper blocks 3 is installed with a steel material protective member 4 that forms a semi-enclosed protection for the protruding copper block 3 (in this embodiment, the steel material protective member 4 covers the upper side, lower side, left side and right side of the protruding copper block 3 (3-1), but does not cover the top surface of the protruding copper block 3 (3-1)).

[0053] In this embodiment, the raised copper blocks 3 are arranged in multiple rows on the hot surface 11 of the copper cooling wall body 1, and there is a gap 6 between two adjacent rows of raised copper blocks 3; there is a gap between two adjacent raised copper blocks 3 in the same row; in each row of raised copper blocks 3, a portion of the raised copper blocks 3 (3-1) are installed with steel material protective parts 4, and the remaining raised copper blocks 3 (3-2) are not installed with steel material protective parts 4, and the raised copper blocks 3 (3-1) installed with steel material protective parts 4 and the raised copper blocks 3 (3-2) not installed with steel material protective parts are arranged alternately. In this embodiment, the sizes of the raised copper blocks in the same row are different, for example, the lateral size of the raised copper block 3 (3-2) is larger than that of the raised copper block 3 (3-1).

[0054] The copper cooling stave body 1 is composed of an integral forged copper plate or an integral rolled copper plate, and the material of the integral forged copper plate or the integral rolled copper plate is copper or copper alloy. By mechanical processing (such as milling), part of the material on the hot surface of the copper cooling stave body 1 is removed to form a raised copper block 3 on the hot surface of the copper cooling stave body 1; after the raised copper block 3 is formed, the steel material protection part 4 is installed on the corresponding raised copper block 3. Figure 1 During processing, multiple strip grooves 01 arranged side by side can be processed on the hot surface of the copper cooling stave body 1, and strip protrusions 02 are formed between two adjacent strip grooves 01; then, according to the design requirements of position and size, multiple grooves 03 are processed in the length direction of the strip protrusions 02 (the material of the strip protrusions in this part is removed) to form the required protruding copper blocks 3. The grooves 03 constitute the gap between two adjacent protruding copper blocks 3 in the same row. The strip grooves 01 are rectangular grooves (i.e., the cross-section of the strip grooves is rectangular), and accordingly, the cross-section shape of the protruding copper block 3 is rectangular, and the cross-section outer edge shape of the steel material protection part 4 is also rectangular, which is suitable for the case of spraying amorphous refractory materials on the hot surface.

[0055] In this embodiment, the steel protection parts 4 are arranged in multiple rows on the hot surface of the copper cooling wall body 1, and the steel protection parts 4 in each row are arranged in sequence from top to bottom; the steel protection parts 4 in the same row are arranged in sequence from left to right, and the positions of the steel protection parts 4 in two adjacent rows are staggered in the left and right directions.

[0056] In this embodiment, one steel protective member 4 corresponds to one raised copper block 3; a through hole 41 matching the raised copper block 3 is provided on the steel protective member 4. When the steel protective member 4 is installed, the raised copper block 3 is embedded in the corresponding through hole 41 to position and support the steel protective member 4. At the same time, the steel protective member 4 protects the raised copper block 3. In this embodiment, the steel protective member 4 is square in shape, and the through hole 41 on the steel protective member 4 is a square hole; the raised copper block 3 is hexahedral, and the steel protective member 4 covers the upper side, lower side, left side and right side of the raised copper block 3.

[0057] The material of the steel material protection part 4 is cast iron, cast steel, wear-resistant alloy steel or stainless steel.

[0058] Each cooling water channel 2 has an inlet and outlet water pipe 7 at both ends. The inlet and outlet water pipes 7 are located on the cold surface 12 of the copper cooling wall body 1. The two inlet and outlet water pipes 7 are connected to the water inlet and outlet ends of the corresponding cooling water channel 2 respectively.

[0059] Example 2.

[0060] like Figure 7 As shown, the difference between this embodiment and embodiment 1 is that the steel protection members 4 in the same row of steel protection members are arranged obliquely (for example, arranged in sequence from the lower left to the upper right). The steel protection member 4 has a rhombus shape, and the through hole 41 on the steel protection member 4 is a rhombus hole.

[0061] The rest of the structure of this embodiment refers to that of Embodiment 1.

[0062] Example 3.

[0063] like Figure 8 As shown, the difference from the first embodiment is that the steel protective member 4 can be round in shape ( Figure 8 a) Regular hexagon ( Figure 8 b) Regular octagon ( Figure 8 c).

[0064] The steel material protection member may also be in other shapes. For example, the steel material protection member 4 is rectangular in shape, and the through hole 41 is a rectangular hole ( Figure 8 d).

[0065] Example 4.

[0066] like Fig. 9 As shown, the difference from Example 2 is that the shape of the steel protective member 4 can be a regular hexagon ( Fig. 9 a) Regular octagon ( Fig. 9 b). The steel protective part may also have other shapes.

[0067] Example 5.

[0068] like Fig.10 As shown, in this embodiment, multiple steel material protection members 4 can correspond to one protruding copper block 3, that is, multiple steel material protection members 4 are combined and fixed on one protruding copper block 3, for example: two steel material protection members 4 correspond to one protruding copper block 3 ( Fig.10 a), four steel protective parts 4 correspond to one raised copper block 3 ( Fig.10 b, Fig.10 c).

[0069] Example 6.

[0070] like Fig.11 As shown, when the steel material protection member 4 is installed, the protruding copper block 3 is embedded in the through hole 41 of the steel material protection member 4, and then the steel material protection member 4 is connected to the copper cooling wall body 1 by using the countersunk bolt 9.

[0071] Example 7.

[0072] like Fig.12 As shown, the steel protective member 4 covers the side surfaces and the top surface of the raised copper block 3, that is, the steel protective member 4 fully surrounds and protects the raised copper block 3; after the raised copper block 3 is embedded in the groove 44 on the steel protective member 4, the countersunk bolt 9 is used to connect the steel protective member 4 to the raised copper block 3.

[0073] On this basis, another countersunk bolt 9 can be used to connect the steel material protection part 4 with the copper cooling wall body 1.

[0074] Example 8.

[0075] like Fig.13 As shown, the raised copper block 3 is cylindrical, and its outer side is provided with external threads, and the steel material protection member 4 is provided with matching screw holes, and the steel material protection member 4 is installed on the raised copper block 3 through threaded connection. In this embodiment, the steel material protection member 4 covers the cylindrical side surface of the raised copper block 3, but does not cover the top surface of the raised copper block 3.

[0076] Example 9.

[0077] like Figure 14-15As shown, the main difference between this embodiment and embodiment 1 is that the steel material protection member 4 covers the side surfaces and top surface of the corresponding raised copper block 3 (3-1) (the raised copper block 3 (3-1) has an upper side surface, a lower side surface, a left side surface, a right side surface and a top surface, and the steel material protection member 4 covers all five surfaces of the raised copper block 3), that is, the steel material protection member 4 forms a full surrounding protection for the corresponding raised copper block 3 (3-1). In this way, the height of the steel material protection member 4 protruding inward exceeds the top surface of the raised copper block 3 (3-2) (for example, exceeds 10-60mm), thereby forming a plurality of steel material islands, and the steel material islands and the raised copper block 3 (3-2) are staggered in height, which will form an S-shaped irregular spoiler (such as Fig.15 As shown by the arrow in the figure), it is helpful to reduce the flow rate of the gas flow or the charge, and reduce the degree of scouring and damage to the hot surface of the copper cooling wall body. Moreover, the steel protective member 4 can provide more comprehensive protection for the raised copper block 3 (3-1).

[0078] The rest of the structure of this embodiment refers to that of Embodiment 1.

[0079] Example 10.

[0080] like Fig.16 As shown, in this embodiment, the steel protective member 4 is provided with a notch 45 ( Fig.16 a is a gap on one side, Fig.16 b is a notch on both sides). In this case, it is usually necessary to fix the position of the steel material protection member 4 by means of bolt locking. The steel material protection member 4 forms a semi-enclosed protection for the raised copper block 3.

[0081] Example 11.

[0082] A steel material protection part can correspond to multiple raised copper blocks, that is, multiple raised copper blocks are used to jointly position and support the steel material protection part, for example: Fig.17 As shown, one steel protective member 4 corresponds to two protruding copper blocks 3, and the steel protective member 4 is provided with two through holes 41 ( Fig.17 b), the two through holes 41 are matched with the two raised copper blocks 3 respectively; or, the steel material protection member 4 is provided with two notches 45, the two notches 45 are matched with the two raised copper blocks 3 respectively, and the two notches 45 can be oriented in the same direction ( Fig.17 a), the two notches 45 may also be oriented in different directions ( Fig.17 c).

[0083] Example 12.

[0084] like Figure 18-Figure 20As shown, in this embodiment, two steel protective members 4 correspond to one raised copper block 3; the cross-sectional shape of the raised copper block 3 is trapezoidal, and the portion of the raised copper block 3 close to the hot surface 11 of the copper cooling stave body is smaller than the portion away from the hot surface 11 of the copper cooling stave body. Notches 45 matching the raised copper blocks 3 are respectively provided on the two steel protective members 4; after the two steel protective members 4 are installed, the solid parts 46 on both sides of the notch 45 of one steel protective member 4 partially overlap with the solid parts 46 on both sides of the notch 45 of the other steel protective member 4, and the overlapping parts are locked by countersunk bolts 9. This method is easy to install, and after installation, it can effectively prevent the steel protective member 4 from detaching from the raised copper block 3.

[0085] Example 13.

[0086] like Fig.21 As shown, in this embodiment, the raised copper blocks 3 are arranged in multiple rows and columns on the hot surface of the copper cooling stave body 1; steel protective parts 4 are installed on all the raised copper blocks 3, and the wear-resistant blocks 4 are also arranged in multiple rows and columns on the hot surface of the copper cooling stave body 1. The rest of the structure of this embodiment refers to Example 1.

[0087] In other embodiments, the copper cooling stave body can also be cast from copper or copper alloy. Through mold design, the copper cooling stave body is cast while the copper cooling stave body is cast; after the copper cooling stave body is formed, a steel protective piece is installed on the copper cooling stave body.

[0088] In other implementation schemes, multiple steel protective parts may correspond to multiple raised copper blocks, that is, multiple steel protective parts are combined and fixed on multiple raised copper blocks, and the combined steel protective parts are positioned and supported by the multiple raised copper blocks.

[0089] In other implementation schemes, the steel protective part can also be fixed on the raised copper block by interference fit, bonding, welding, etc., or can be fixed on the boss by a combination of various different forms.

Claims

1. A copper cooling stave with a novel hot surface structure, comprising a copper cooling stave body, wherein the copper cooling stave body is provided with at least one cooling water channel, characterized in that: The hot surface of the copper cooling stave body is provided with a plurality of raised copper blocks distributed in a dot matrix or dispersed manner, and the raised copper blocks and the copper cooling stave body are an integral structure; some of the raised copper blocks are equipped with steel material protection parts that fully surround or semi-enclose the raised copper blocks, and the remaining raised copper blocks are not equipped with steel material protection parts; The raised copper blocks are arranged in multiple rows on the hot surface of the copper cooling wall body, with a gap between two adjacent rows of raised copper blocks; there is a gap between two adjacent raised copper blocks in the same row; in each row of raised copper blocks, a portion of the raised copper blocks are installed with steel protective parts, and the raised copper blocks installed with steel protective parts and the raised copper blocks not installed with steel protective parts are arranged alternately; The steel material protection parts are arranged in multiple rows on the hot surface of the copper cooling wall body, and the steel material protection parts in each row are arranged in sequence from top to bottom; the steel material protection parts in the same row are arranged in sequence from left to right, and the positions of the steel material protection parts in two adjacent rows are staggered in the left-right direction; The steel protective member covers the side surfaces and the top surface of the corresponding raised copper block, or covers the top surface and a part of the side surfaces of the raised copper block; The height of the steel material protection piece protruding inward exceeds the top surface of the raised copper block, thereby forming a plurality of steel material islands, and the steel material islands and the raised copper blocks are staggered in height to form an S-shaped irregular spoiler.

2. The copper cooling stave of the novel hot surface structure according to claim 1 is characterized by: The material of the steel material protection part is cast iron, cast steel, wear-resistant alloy steel or stainless steel.

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