Copper cooling wall for strengthening slag adhering on hot surface

Abstract

A copper cooling wall for strengthening slag adhering on a hot surface comprises a copper cooling wall body, at least one cooling water channel is arranged in the copper cooling wall body, and the copper cooling wall is characterized by further comprising at least one slag crust anchoring claw; the hot surface of the copper cooling wall body is provided with a plurality of convex copper blocks which are distributed in a dot-matrix mode or a distributed mode, the convex copper blocks and the copper cooling wall body are of an integral structure, and at least one convex copper block is provided with a steel protection piece which forms full-surrounding or half-surrounding protection on the convex copper block; the slag crust anchoring claws are installed on the protruding copper blocks or the steel protection pieces or installed on the hot face of the copper cooling wall body. The hot surface of the copper cooling wall body of the copper cooling wall has excellent slag adhering capacity and wear resistance, and the service life of the copper cooling wall can be prolonged.

Description

Technical Field

[0001] The utility model relates to furnace cooling equipment for a blast furnace, in particular to a copper cooling wall for strengthening hot surface slag hanging. 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. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a copper cooling stave with enhanced hot surface slag hanging, the hot surface of the copper cooling stave body of the copper cooling stave has excellent slag hanging ability and wear resistance, which is conducive to extending the service life of the copper cooling stave. The technical solution adopted is as follows:

[0006] A copper cooling stave for strengthening hot surface slag hanging, comprising a copper cooling stave body, in which at least one cooling water channel is provided, and characterized in that it also comprises at least one slag skin anchoring claw; 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, the raised copper blocks and the copper cooling stave body are an integral structure, wherein at least one raised copper block is provided with a steel material protective member which fully surrounds or semi-surrounds the raised copper block; the slag skin anchoring claw is installed on the raised copper block or the steel material protective member, or is installed on the hot surface of the copper cooling stave body.

[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] In the present utility model, dovetail grooves and strip groove rib structures of the traditional structure are cancelled on the hot surface of the copper cooling stave body, and are replaced by a number of raised copper blocks distributed in a dot matrix or dispersedly, in combination with a steel protection member. The raised copper blocks with the steel protection member installed and the raised copper blocks without the steel protection member installed together form the hot surface structure. The raised copper blocks serve as the core for anchoring and cooling functions; the raised copper blocks with the steel protection member installed play a positioning role for the steel protection member and can timely absorb the heat of the steel protection member (the heat on the raised copper blocks is carried away by the water flowing in the cooling water channels of the copper cooling stave body). The raised copper blocks without the steel protection member installed strengthen the rapid cooling and slag coagulation functions of the hot surface. The steel protection member has high strength and high wear resistance, can effectively resist the erosion of materials and coal gas flow in the blast furnace; has better affinity for the self - coagulated slag skin, thus playing a role in firmly hanging the slag; plays a good protection role for the raised copper blocks, can effectively avoid the raised copper blocks from being worn, and ensures that the raised copper blocks can play the role of rapid cooling. The slag skin anchoring claws can be combined into the slag skin, pulling the slag skin towards the copper cooling stave body, further preventing the slag skin from falling off and improving the effect of firmly hanging the slag.

[0010] Generally, each end of the cooling water channel corresponds to an inlet and outlet water pipe respectively. The inlet and outlet water pipes are located on the cold surface of the copper cooling stave body, and the two inlet and outlet water pipes are respectively communicated with the inlet end and the outlet end of the corresponding cooling water channel.

[0011] The above - mentioned copper cooling stave body can be composed of an integrally forged copper plate or an integrally rolled copper plate. The material of the integrally forged copper plate or the integrally rolled copper plate can be copper or copper alloy. By means of mechanical processing (such as milling), by removing the materials on the hot surface of the copper cooling stave body around the raised copper blocks, a number of raised copper blocks distributed in a dot matrix or dispersedly are formed on the hot surface of the copper cooling stave body; after forming the raised copper blocks, a steel protection member is installed on the raised copper blocks. For example, transverse grooves can be first milled on the hot surface of the copper cooling stave body, and then longitudinal grooves are processed to form an array - arranged raised copper blocks. Through mechanical processing (such as drilling), channels are formed on it (when necessary, water channel plugs are installed in the channels), and these channels are interconnected to form cooling water channels (according to the designed number and layout of the cooling water channels, one or more cooling water channels can be formed by connection); 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), forming the cooling system of the copper cooling stave body.

[0012] The above-mentioned copper stave body can also be cast from copper or copper alloy. By designing a suitable mold, several raised copper blocks distributed in a dot matrix or dispersedly and connected to the copper stave body are cast simultaneously when casting the copper stave body; after forming the raised copper blocks, steel protection parts are installed on the raised copper blocks. The cooling water channels can be composed of copper tubes embedded in the copper stave body, and the parts of the two ends of the copper tubes extending to the cold surface of the copper stave body respectively form an inlet and an outlet water pipe. Before casting, the bent copper tubes are pre-placed in the mold (according to the number of designed cooling water channels, the corresponding number of copper tubes are placed at the required positions), and after casting, the copper stave body embeds the copper tubes (only leaving the two ends of the copper tubes outside the copper stave body); one copper tube forms a cooling water channel in the copper stave body, and the parts of the two ends of the copper tube extending out of the cold surface of the copper stave body are used as the inlet and outlet water pipes.

[0013] On the hot surface of the above-mentioned copper stave body, the sizes of the raised copper blocks can be the same, or there can be various different sizes of raised copper blocks on the hot surface of the copper stave body (for example, two different sizes of raised copper blocks). In a preferred solution, there are two different sizes of raised copper blocks on the hot surface of the above-mentioned copper stave body, and the two different sizes of raised copper blocks are arranged alternately on the hot surface of the copper stave body.

[0014] In a preferred solution, the above-mentioned raised copper blocks are arranged in multiple rows on the hot surface of the copper stave body. In the same row of raised copper blocks, each raised copper block can be arranged horizontally (that is, arranged in sequence from left to right), or obliquely (for example, arranged in sequence from bottom left to top right, or from top left to bottom right).

[0015] Generally, the above-mentioned steel protection parts are distributed in a dot matrix or dispersedly on the hot surface of the copper stave body, and are positioned and cooled by the raised copper blocks. The arrangement mode of the steel protection parts can be similar to that of the raised copper blocks. After installing the steel protection parts on the hot surface of the copper stave body, refractory materials can be sprayed, poured and tamped on its hot surface, or refractory bricks can be installed.

[0016] In a preferred solution, after the above-mentioned steel protection parts are installed on the raised copper blocks, they are arranged in multiple rows on the hot surface of the copper stave body, and there is a gap between two adjacent steel protection parts in the same row. In the same row of steel protection parts, each steel protection part can be arranged horizontally (that is, arranged in sequence from left to right), or obliquely (for example, arranged in sequence from bottom left to top right, or from top left to bottom right).

[0017] In a more preferred solution, the above-mentioned steel material protection components are arranged in multiple rows on the hot surface of the copper cooling stave body, and the steel material protection components in each row are arranged in sequence from top to bottom; the steel material protection components in the same row are arranged in sequence from left to right, and the positions of the steel material protection components in adjacent rows are staggered in the left-right direction (that is, in adjacent rows, the position of the steel material protection component in one row corresponds to the position of the gap between two adjacent steel material protection components in the other row). The common form of hot surface wear of the copper cooling stave is longitudinal (i.e., up and down direction) linear erosion marks. This preferred hot surface structure will form multiple steel material island platforms arranged in a staggered manner on the hot surface. When the coal gas flow and the burden are eroded, affected by each steel material island platform, an S-shaped irregular turbulent flow will be formed, thereby reducing the flow velocity and reducing the degree of erosion damage to the hot surface.

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

[0019] In another more preferred solution, the above-mentioned raised copper blocks are arranged in multiple rows on the hot surface of the copper cooling wall body, and there is a gap between two adjacent rows of raised copper blocks; there is a gap between two adjacent 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 material protective piece; at least one raised copper block in each row of raised copper blocks is installed with a slag skin anchoring claw. In each row of raised copper blocks, only a part of the raised copper blocks can be installed with a steel material protective piece (the number and position of the steel material protective piece can be flexibly arranged according to design requirements), or all raised copper blocks can be installed with a steel material protective piece. The sizes of each raised copper block in the same row can be the same or different (for example, the raised copper blocks have a variety of different lateral sizes). In a more preferred solution, in each row of raised copper blocks, a part of the raised copper blocks are installed with a steel material protective piece, and the other raised copper blocks are installed with a slag skin anchoring claw, and the raised copper blocks with steel material protective pieces and the raised copper blocks with slag skin anchoring claws are arranged alternately. In another more preferred solution, in each row of raised copper blocks, a portion of the raised copper blocks are installed with steel protective parts, a portion of the raised copper blocks are installed with slag skin anchoring claws, and other raised copper blocks are not installed with steel protective parts or slag skin anchoring claws. In another more preferred solution, in each row of raised copper blocks, a portion of the raised copper blocks are installed with both steel protective parts and slag skin anchoring claws, and other raised copper blocks are not installed with steel protective parts or slag skin anchoring claws. During processing, a plurality of strip grooves arranged side by side can be first processed on the hot surface of the copper cooling wall body, and a strip protrusion is formed between two adjacent strip grooves; then, according to the design requirements of position and size, a plurality of grooves are processed in the length direction of the strip protrusion (removing the material of the strip protrusion in this position) to form the required raised 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 member covers the side surfaces and top surface of the corresponding raised copper block (the top surface of the raised copper block refers to the side of the raised copper block facing the furnace cavity after being installed in the blast furnace). In this way, the inward protrusion height of the steel material protective member exceeds the top surface of the raised section (for example, exceeds 10-60mm), thereby forming a plurality of steel material islands. The steel material islands and the raised sections are staggered in height, which is beneficial to reducing the flow rate of the coal gas flow or charge and reducing the degree of erosion damage to the hot surface of the copper cooling wall 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 above steel material protection member covers all or part of the side surfaces and the top surface of the protruding copper block. For example: (1) When the protruding copper block is in the shape of a hexahedron, the protruding 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 material protection member can cover all five surfaces of the protruding copper block, or can only cover the upper side surface, the lower side surface, the left side surface and the right side surface of the protruding copper block, or can only cover a part of the upper side surface, the lower side surface, the left side surface and the right side surface of the protruding copper block (such as only covering the upper side surface, the left side surface and the right side surface of the protruding copper block, or only covering the lower side surface, the left side surface and the right side surface of the protruding copper block, or only covering the upper side surface and the left side surface, etc.), or can cover the top surface and a part of the side surfaces of the protruding copper block; (2) When the protruding copper block is in the shape of a cylinder, the protruding copper block has a cylindrical side surface and a circular top surface. The steel material protection member can cover both the cylindrical side surface and the circular top surface of the protruding copper block, or can only cover the cylindrical side surface of the protruding copper block. Among them, the above steel material protection member covering all the side surfaces and the top surface of the protruding copper block is most beneficial to protecting the protruding copper block from wear.

[0022] Generally, one steel material protection member corresponds to one protruding copper block. It is also possible that one steel material protection member corresponds to multiple protruding copper blocks, that is, multiple protruding copper blocks are used together to position and support the steel material protection member. It is also possible that multiple steel material protection members correspond to one protruding copper block, that is, multiple steel material protection members are combined and fixed on one protruding copper block. It is also possible that multiple steel material protection members correspond to multiple protruding copper blocks, that is, multiple steel material protection members are combined and fixed on multiple protruding copper blocks, and these multiple protruding copper blocks are used together to position and support the combined steel material protection member.

[0023] In a preferred solution, the material of the above steel material protection member is cast iron, cast steel, wear-resistant alloy steel or stainless steel. When the material of the steel material protection member 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 31 W / (m•K), ordinary carbon steel is 45 W / (m•K), conventional refractory material SiC is 6.5 W / (m•K)). The hot surface temperature of the steel material protection member is correspondingly much lower than that of the refractory material (about 400 - 450 °C lower). The lower the temperature, the easier it is to form a slag skin, which is more conducive to slag hanging to form protection. Moreover, the steel material protection members made of steel and iron materials are more affinity with molten iron, and are easy to hang and form a stable slag skin layer for protection. At the same time, it is beneficial to divide the slag skin into small pieces and is not easy to fall off in a large area. A steel material protection member is usually an integral made of the same material.

[0024] The outer shape of the above steel material protection member can be circular, square or other polygons (such as regular hexagon, regular octagon, rhombus, etc.); the outer shape of the steel material protection member can also be any other shape, and can be a symmetric structure or an asymmetric structure.

[0025] The above-mentioned steel material protection parts can be fixed on the raised copper blocks by means of interference fit, adhesion, welding, screw connection or bolt locking, etc., or can be fixed on the raised platform by a combination of various different forms. For example, a countersunk head bolt is used to connect the steel material protection part with the copper cooling stave body or the raised copper block, and the countersunk head bolt can be selected with different distribution positions, different quantities and different bolt styles according to the actual situation to meet the firmness requirements.

[0026] In a preferred solution, the above-mentioned slag skin anchoring claws are made of steel material, such as wear-resistant alloy steel or stainless steel.

[0027] In a preferred solution, the above-mentioned slag skin anchoring claws include a screw rod and a wing nut; screw holes are provided at corresponding positions on the hot surfaces of the raised copper blocks, steel material protection parts or copper cooling stave bodies, one end of the screw rod is screwed into the screw hole, and the wing nut is installed on the screw rod and is in close contact with the part around the screw hole. The part of the screw rod outside the screw hole and the two wings of the wing nut form an anchoring claw that can combine with the slag skin.

[0028] In another preferred solution, the above-mentioned slag skin anchoring claws include a screw rod, a nut and at least one claw part; screw holes are provided at corresponding positions on the hot surfaces of the raised copper blocks, steel material protection parts or copper cooling stave bodies, one end of the screw rod is screwed into the screw hole, and the nut is installed on the screw rod and is in close contact with the part around the screw hole; each claw part is arranged at the other end of the screw rod and is integrally connected with the screw rod. The part of the screw rod outside the screw hole and each claw part form an anchoring claw that can combine with the slag skin.

[0029] In a more preferred solution, a steel material protection part and slag skin anchoring claws are simultaneously installed on the same raised copper block. The steel material protection part covers the side surfaces and the top surface of the raised copper block. Screw holes are provided on the top surface of the raised copper block, and screw rod through holes are provided at the parts of the steel material protection part corresponding to the screw holes; the slag skin anchoring claws include a screw rod and a nut. One end of the screw rod passes through the screw rod through hole and is then screwed into the screw hole, and the nut is installed on the screw rod and is in close contact with the steel material protection part (the nut locks the steel material protection part on the raised copper block). The specific slag skin anchoring claws can be: the slag skin anchoring claws include a screw rod and a wing nut; or, the slag skin anchoring claws include a screw rod, a nut and at least one claw part, and each claw part is arranged at the other end of the screw rod and is integrally connected with the screw rod.

[0030] The hot surface structure of the copper cooling stave of the present utility model is completely different from the existing dovetail groove hot surface structure. Compared with the prior art, it has the following beneficial effects:

[0031] (1) The toughness and pressure resistance of the steel protection component are much higher than those of conventional refractory bricks. Unlike refractory bricks, it is not easily cracked and damaged by the thermal shock and chemical erosion inside the furnace. The hardness of the steel protection component is higher than that of the copper cooling stave body (the hardness HB of common steel materials such as 20#, 35#, and 40# is 110 - 229, while the hardness HB of pure copper material is 35 - 45), and its wear resistance is better;

[0032] (2) It can not only give full play to the rapid slag coagulation ability of the raised copper blocks on the hot surface of the copper cooling stave, but also utilize the iron-slag affinity of the steel protection component and the pulling effect of the slag skin anchoring claws on the slag skin to further enhance the slag hanging ability, firmly hang the slag, and form a stable slag skin protection layer;

[0033] (3) Compared with the dovetail groove hot surface structure of the traditional copper cooling stave, the hot surface structure of the present utility model can reduce the consumption of copper materials by 30% - 70%, thereby reducing the procurement cost of copper cooling staves for steel mill users and saving funds. Brief Description of the Drawings

[0034] Figure 1 is a schematic structural diagram of the copper cooling stave of the preferred embodiment 1 of the present utility model when the steel protection component is not installed;

[0035] Figure 2 is a schematic structural diagram of the copper cooling stave of the preferred embodiment 1 of the present utility model;

[0036] Figure 3 is Figure 2 the sectional view taken along line A - A of

[0037] Figure 4 is Figure 2 the sectional view taken along line B - B of

[0038] Figure 5 is a schematic structural diagram of the copper cooling stave of the preferred embodiment 2 of the present utility model;

[0039] Figure 6 is a schematic structural diagram of the steel protection component in the preferred embodiment 3 of the present utility model;

[0040] Figure 7 is a schematic structural diagram of the steel protection component in the preferred embodiment 4 of the present utility model;

[0041] Figure 8 is a schematic structural diagram of the cooperation between the steel protection component and the raised copper blocks in the preferred embodiment 5 of the present utility model;

[0042] Figure 9 is a schematic structural diagram of the cooperation between the steel protection component and the raised copper blocks in the preferred embodiment 6 of the present utility model;

[0043] Figure 10It is a schematic structural diagram of the cooperation between the steel protection member and the raised copper block in the 7th preferred embodiment of the present utility model;

[0044] Figure 11 It is a schematic structural diagram of the cooperation between the steel protection member and the raised copper block in the 8th preferred embodiment of the present utility model;

[0045] Figure 12 It is a schematic structural diagram of the copper cooling stave in the 9th preferred embodiment of the present utility model;

[0046] Figure 13 It is a schematic diagram of the hot surface turbulence in the 9th preferred embodiment of the present utility model;

[0047] Figure 14 It is a schematic structural diagram of the cooperation between the steel protection member and the raised copper block in the 10th preferred embodiment of the present utility model;

[0048] Figure 15 It is a schematic structural diagram of the cooperation between the steel protection member and the raised copper block in the 11th preferred embodiment of the present utility model;

[0049] Figure 16 It is a schematic structural diagram of the cooperation between the steel protection member and the raised copper block in the 12th preferred embodiment of the present utility model;

[0050] Figure 17 It is Figure 16 The D-D sectional view (partial);

[0051] Figure 18 It is Figure 16 The E-E sectional view (partial);

[0052] Figure 19 It is a schematic structural diagram of the copper cooling stave in the 13th preferred embodiment of the present utility model;

[0053] Figure 20 It is a schematic structural diagram of the cooperation between the slag skin anchoring claw, the steel protection member and the raised copper block in the 14th preferred embodiment of the present utility model;

[0054] Figure 21 It is a schematic structural diagram of the slag skin anchoring claw in the 15th preferred embodiment of the present utility model;

[0055] Figure 22 It is a schematic structural diagram of the cooperation between the slag skin anchoring claw, the steel protection member and the raised copper block in the 16th preferred embodiment of the present utility model. Detailed implementation manners

[0056] Embodiment 1

[0057] As Figures 1 - 4As shown, in this embodiment, the copper cooling stave for strengthening hot surface slag hanging includes a copper cooling stave body 1 and at least one slag skin anchoring claw 8; at least one (such as four) cooling water channel 2 is provided in the copper cooling stave body 1; a plurality of raised copper blocks 3 distributed in a dot matrix or dispersed manner are provided on the hot surface 11 of the copper cooling stave body 1, and the raised copper blocks 3 and the copper cooling stave body 1 are an integral structure, wherein at least one raised copper block 3 is installed with a steel material protective member 4 for semi-enclosing protection of the raised 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 raised copper block 3 (3-1), but does not cover the top surface of the raised copper block 3 (3-1)); the slag skin anchoring claw 8 is installed on the raised copper block 3.

[0058] 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 part of the raised copper blocks 3 (3-1) are installed with steel material protection parts 4, and other raised copper blocks 3 (3-2) are installed with slag skin anchoring claws 8, and the raised copper blocks 3 (3-1) installed with steel material protection parts 4 and the raised copper blocks 3 (3-2) installed with slag skin anchoring claws 8 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).

[0059] 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.

[0060] In this embodiment, the steel protection members 4 are arranged in multiple rows on the hot surface of the copper stave body 1, and the steel protection members 4 in each row are arranged in sequence from top to bottom; the steel protection members 4 in the same row are arranged in sequence from left to right, and the positions of the steel protection members 4 in adjacent rows are staggered in the left-right direction. The slag skin anchoring claws 8 are arranged in multiple rows on the hot surface of the copper stave body 1, and the slag skin anchoring claws 8 in each row are arranged in sequence from top to bottom; the slag skin anchoring claws 8 in the same row are arranged in sequence from left to right, and the positions of the slag skin anchoring claws 8 in adjacent rows are staggered in the left-right direction.

[0061] In this embodiment, one steel protection member 4 corresponds to one raised copper block 3; a through hole 41 matching the raised copper block 3 is provided on the steel protection member 4. When installing the steel protection member 4, the raised copper block 3 is embedded into the corresponding through hole 41 to position and support the steel protection member 4. At the same time, the steel protection member 4 plays a role in protecting the raised copper block 3. In this embodiment, the outer shape of the steel protection member 4 is square, and the through hole 41 on the steel protection member 4 is a square hole; the raised copper block 3 is in the shape of a hexahedron, and the steel protection member 4 covers the upper side, lower side, left side and right side of the raised copper block 3.

[0062] The material of the steel protection member 4 is cast iron, cast steel, wear-resistant alloy steel or stainless steel.

[0063] In this embodiment, the slag skin anchoring claw 8 includes a screw rod 81 and a butterfly nut 82; a screw hole 31 is provided at a corresponding position on the raised copper block 3 (3-2). One end of the screw rod 81 is screwed into the screw hole 31, and the butterfly nut 82 is installed on the screw rod 81 and is in close contact with the part around the screw hole 31. The part of the screw rod 81 outside the screw hole 31 and the two wings of the butterfly nut 82 form an anchoring claw that can be combined with the slag skin. After the butterfly nut 82 is installed in place, the butterfly nut 82 can be welded to the screw rod 81.

[0064] Both ends of each cooling water channel 2 respectively correspond to an inlet and outlet pipe 7. The inlet and outlet pipes 7 are located on the cold surface 12 of the copper stave body 1, and the two inlet and outlet pipes 7 are respectively communicated with the inlet end and the outlet end of the corresponding cooling water channel 2.

[0065] Embodiment 2

[0066] As Figure 5 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 slag skin anchoring claws 8 in the same row of slag skin anchoring claws are arranged obliquely (for example, arranged in sequence from the lower left to the upper right). The outer shape of the steel protection member 4 is rhombic, and the through hole 41 on the steel protection member 4 is a rhombic hole.

[0067] The remaining structure of this embodiment refers to Embodiment 1.

[0068] Example 3

[0069] like Figure 6 As shown, the difference from the first embodiment is that the steel protective member 4 can be round in shape ( Figure 6 a) Regular hexagon ( Figure 6 b) Regular octagon ( Figure 6 c).

[0070] 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 6 d).

[0071] Example 4

[0072] like Figure 7 As shown, the difference from Example 2 is that the shape of the steel protective member 4 can be a regular hexagon ( Figure 7 a) Regular octagon ( Figure 7 b). The steel protective part may also have other shapes.

[0073] Example 5

[0074] like Figure 8 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 ( Figure 8 a), four steel protective parts 4 correspond to one raised copper block 3 ( Figure 8 b, Figure 8 c).

[0075] Example 6

[0076] like Figure 9 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.

[0077] Example 7

[0078] like Figure 10 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.

[0079] 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.

[0080] Example 8

[0081] like Figure 11 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.

[0082] Example 9

[0083] like Figures 12 - 13 As 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 Figure 13 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).

[0084] The rest of the structure of this embodiment refers to that of Embodiment 1.

[0085] Example 10

[0086] like Figure 14 As shown, in this embodiment, the steel protective member 4 is provided with a notch 45 ( Figure 14 a is a gap on one side, Figure 14 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.

[0087] Embodiment 11

[0088] 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: Figure 15 As shown, a steel protective member 4 corresponds to two protruding copper blocks 3, and the steel protective member 4 is provided with two through holes 41 ( Figure 15b), two through holes 41 are respectively mated with two raised copper blocks 3; alternatively, two notches 45 are provided on the steel protection member 4, and the two notches 45 are respectively mated with the two raised copper blocks 3, and the two notches 45 may have the same orientation ( Figure 15 a), the two notches 45 may also have different orientations ( Figure 15 c).

[0089] Embodiment 12

[0090] As Figures 16 - 18 shown, in this embodiment, two steel protection members 4 correspond to one raised copper block 3; the cross-sectional shape of the raised copper block 3 is trapezoidal, and the part of the raised copper block 3 close to the hot surface 11 of the copper cooling wall body is smaller in size than the part away from the hot surface 11 of the copper cooling wall body. Two notches 45 matching the raised copper block 3 are respectively provided on the two steel protection members 4; after the two steel protection members 4 are installed, the solid parts 46 on both sides of the notch 45 of one steel protection member 4 partially overlap with the solid parts 46 on both sides of the notch 45 of the other steel protection member 4, and are locked at the overlapping part by a countersunk head bolt 9. By adopting this method, it is convenient for installation, and after installation, the steel protection member 4 can be effectively prevented from detaching from the raised copper block 3.

[0091] Embodiment 13

[0092] As Figure 19 shown, in this embodiment, the raised copper blocks 3 are arranged in multiple rows and multiple columns on the hot surface of the copper cooling wall body 1. Some of the raised copper blocks 3 (3-1) are installed with steel protection members 4, some of the raised copper blocks 3 (3-2) are installed with slag skin anchoring claws 8, and the other raised copper blocks 3 (3-3) are not installed with steel protection members nor slag skin anchoring claws. The remaining structure of this embodiment refers to Embodiment 1.

[0093] Embodiment 14

[0094] As Figure 20 shown, in this embodiment, a steel protection member 4 and a slag skin anchoring claw 8 are installed on the same raised copper block 3 at the same time; the steel protection member 4 covers the side surfaces and the top surface of the raised copper block 3, and a screw hole 31 is provided on the top surface of the raised copper block 3, and a screw rod through hole 42 is provided at the corresponding part of the steel protection member 4. The slag skin anchoring claw 8 includes a screw rod 81 and a butterfly nut 82; one end of the screw rod 81 passes through the screw rod through hole 42 and then is screwed into the screw hole 31, and the butterfly nut 82 is installed on the screw rod 81 and is in close contact with the steel protection member 4 (the butterfly nut 82 locks the steel protection member 4 on the raised copper block 3). The part of the screw rod 81 outside the screw hole 31 and the two wings of the butterfly nut 82 form an anchoring claw capable of combining with the slag skin. After the butterfly nut 82 is installed in place, the butterfly nut 82 can be welded to the screw rod 81.

[0095] In addition, when the steel protection member 4 and the slag skin anchoring claw 8 are simultaneously installed on the same raised copper block 3, the steel protection member 4 can also cover the top surface and part of the side surfaces of the raised copper block 3 (for example, the raised copper block 3 has an upper side surface, a lower side surface, a left side surface, a right side surface, and a top surface, and the steel protection member 4 covers the upper side surface, the left side surface, the right side surface, and the top surface of the raised copper block 3). At this time, the installation method of the steel protection member 4 and the slag skin anchoring claw 8 refers to the case where the steel protection member 4 covers the side surfaces and the top surface of the raised copper block 3.

[0096] Example 15

[0097] As Figure 21 shown, in this embodiment, the slag skin anchoring claw 8 includes a screw rod 81, a nut 83, and at least one claw portion 84. One end of the screw rod 81 is used to be screwed into the corresponding screw hole, and each claw portion 84 is provided at the other end of the screw rod 81 and is integrally formed with the screw rod 81. The slag skin anchoring claw 8 can include different numbers of claw portions. For example: the slag skin anchoring claw 8 includes one claw portion 84 ( Figure 21 c), the slag skin anchoring claw 8 includes two claw portions 84 ( Figure 21 a), or the slag skin anchoring claw 8 includes three claw portions 84 ( Figure 21 b).

[0098] Figure 21 The slag skin anchoring claw 8 shown can replace the slag skin anchoring claw 8 of Example 1. Specifically: a screw hole 31 is provided at a corresponding position on the raised copper block 3, one end of the screw rod 81 is screwed into the screw hole 31, and the nut 83 is installed on the screw rod 81 and is in close contact with the part around the screw hole 31. The part of the screw rod 81 outside the screw hole and each claw portion 84 form an anchoring claw capable of combining with the slag skin. After the nut 83 is installed in place, the nut 83 can be welded to the screw rod 81.

[0099] When the steel protection member 4 and the slag skin anchoring claw 8 are simultaneously installed on the same raised copper block 3, Figure 21 The slag skin anchoring claw 8 shown can replace the slag skin anchoring claw 8 of Example 20. Specifically: the steel protection member 4 covers the side surfaces and the top surface of the raised copper block 3, a screw hole 31 is provided on the top surface of the raised copper block 3, and a screw rod through hole 42 is provided at the part of the steel protection member 4 corresponding to the screw hole 31; one end of the screw rod 81 passes through the screw rod through hole 42 and then is screwed into the screw hole 31, and the nut 83 is installed on the screw rod 81 and is in close contact with the steel protection member 4 (the nut 83 locks the steel protection member 4 on the raised copper block 3). The part of the screw rod 81 outside the screw hole and each claw portion 84 form an anchoring claw capable of combining with the slag skin. After the nut 83 is installed in place, the nut 83 can be welded to the screw rod 81.

[0100] Example 16

[0101] like Figure 22 As shown, in this embodiment, the steel material protection member 4 covers all the side surfaces and the top surface of the raised copper block 3, that is, the steel material protection member 4 forms a full surrounding protection for the raised copper block 3; after the raised copper block 3 is embedded in the groove 44 on the steel material protection member 4, the steel material protection member 4 is connected to the raised copper block 3 by a countersunk bolt 9. The steel material protection member 4 is equipped with a slag skin anchoring claw 8, and the slag skin anchoring claw 8 includes a screw rod 81 and a butterfly nut 82; one end of the screw rod 81 is screwed into the screw hole 43 on the steel material protection member 4, and the butterfly nut 82 is installed on the screw rod 81 and is in close contact with the steel material protection member 4. The part of the screw rod 81 outside the screw hole 43 and the two wings of the butterfly nut 82 constitute an anchoring claw that can be combined with the slag skin. After the butterfly nut 82 is installed in place, the butterfly nut 82 can be welded to the screw rod 81.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] In other embodiments, the slag crust anchoring claws can also be installed on the hot face of the copper stave body.

Claims

1. A copper cooling stave for strengthening hot surface slag, comprising a copper cooling stave body, wherein at least one cooling water channel is provided in the copper cooling stave body, characterized in that It also includes at least one slag skin anchoring claw; 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, the raised copper blocks and the copper cooling stave body are an integral structure, wherein at least one of the raised copper blocks is installed with a steel material protective member that fully surrounds or semi-encloses the raised copper block; the slag skin anchoring claw is installed on the raised copper block or the steel material protective member, or is installed on the hot surface of the copper cooling stave body.

2. The copper cooling stave for strengthening hot surface drossing according to claim 1 is characterized by: The steel material protection parts are distributed on the hot surface of the copper cooling wall body in a lattice or dispersed manner.

3. The copper cooling stave for strengthening hot surface drossing according to claim 2 is characterized by: After the steel protection pieces are mounted on the raised copper blocks, they are arranged in multiple rows on the hot surface of the copper cooling wall body, with a gap between two adjacent steel protection pieces in the same row.

4. The copper cooling stave for strengthening hot surface drossing according to claim 2 is characterized by: The steel protection parts are arranged in multiple rows on the hot surface of the copper cooling wall 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 in the left and right directions are staggered or aligned with each other.

5. The copper cooling stave for strengthening hot surface drossing according to claim 1 is characterized by: The raised copper blocks are arranged in multiple rows on the hot surface of the copper cooling wall body, with gaps between two adjacent rows of raised copper blocks; there is a gap between two adjacent 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; at least one raised copper block in each row of raised copper blocks is installed with a slag skin anchoring claw.

6. The copper cooling stave for strengthening hot surface drossing according to claim 5 is characterized by: In each row of raised copper blocks, some of the raised copper blocks are equipped with steel protective parts, and other raised copper blocks are equipped with slag skin anchoring claws. The raised copper blocks equipped with steel protective parts and the raised copper blocks equipped with slag skin anchoring claws are arranged alternately.

7. The copper cooling stave for strengthening hot surface drossing according to any one of claims 1 to 6, characterized in that: The steel protective piece covers all or part of the side surfaces and top surface of the raised copper block.

8. The copper cooling stave for strengthening hot surface drossing according to any one of claims 1 to 6, characterized in that: The slag skin anchoring claw comprises a screw and a butterfly nut; a screw hole is provided at a corresponding position on the raised copper block, the steel material protection part or the hot surface of the copper cooling wall body, one end of the screw is screwed into the screw hole, and the butterfly nut is installed on the screw and is in close contact with the part around the screw hole; Alternatively, the slag skin anchoring claw includes a screw, a nut and at least one claw; a screw hole is provided at a corresponding position on the raised copper block, the steel protective part or the hot surface of the copper cooling wall body, one end of the screw is screwed into the screw hole, and the nut is installed on the screw and is in close contact with the area around the screw hole; each claw is provided at the other end of the screw and is connected to the screw to form an integral structure.

9. The copper cooling stave for strengthening hot surface drossing according to any one of claims 1 to 6, characterized in that: A steel protective part and a slag skin anchoring claw are installed on the same raised copper block at the same time. The steel protective part covers the side surfaces and the top surface of the raised copper block. A screw hole is arranged on the top surface of the raised copper block, and a screw through hole is arranged at the position of the steel protective part corresponding to the screw hole. The slag skin anchoring claw includes a screw and a nut. One end of the screw passes through the screw through hole and is screwed into the screw hole. The nut is installed on the screw and is in close contact with the steel protective part.

10. The copper cooling stave for strengthening hot surface drossing according to any one of claims 1 to 6, characterized in that: The material of the steel protection part is cast iron, cast steel, wear-resistant alloy steel or stainless steel; the slag skin anchoring claw is made of steel.

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