A slag retaining plate for a side-blown molten pool smelting furnace

Abstract

The utility model discloses a slag blocking plate of a side-blown molten pool smelting furnace, comprising: a slag blocking unit, comprising a plate body for blocking slag, an anti-scour refractory layer arranged on the outside of the plate body for wrapping the plate body; a heat dissipation unit, comprising a cooling water jacket arranged through the inside of the plate body for continuously passing a cooling medium into the plate body to cool the plate body, and a confluence component arranged at the end of the cooling water jacket for inputting the cooling medium into the cooling water jacket. After the cooling medium enters the liquid separation block and is diverted by the liquid inlet hole, it enters different cooling water jackets respectively, so that the high temperature in the plate body outside the cooling water jacket is brought out by the continuously flowing cooling medium, so that the plate body can be cooled down promptly and quickly during the slag blocking process, thereby achieving the effect of rapid heat dissipation of the slag blocking plate during use, avoiding the deformation of the slag blocking plate due to heat, and extending the service life of the slag blocking plate.

Description

Technical Field

[0001] The utility model relates to the technical field of nonferrous metal smelting, in particular to a slag retaining plate of a side-blown molten pool smelting furnace. Background Art

[0002] In the side-blowing smelting process of non-ferrous metals, high-temperature slag and high-temperature metal products are layered in the side-blowing smelting furnace. The high-temperature smelted slag and metal products flow out regularly to ensure the safe and orderly progress of the smelting process. Since the metal products enter the sedimentation zone and the slag is in the slag layer, it is necessary to set a slag retaining plate to prevent the slag from entering the sedimentation zone. However, the current slag retaining plate research and design are mostly for blast furnace or converter slag retaining plates used in the steel smelting industry.

[0003] Chinese utility model patent CN209052720U proposes a blast furnace slag retaining plate, which adopts a rectangular stainless steel plate with a plurality of waist-shaped holes evenly arranged on the main body. Although the blast furnace slag retaining plate improves the structural strength, the stainless steel slag retaining plate cannot work stably for a long time in a side-blown smelting furnace, and the slag retaining plate of this structure has poor adaptability to the side-blown smelting furnace and is difficult to install and use in the side-blown smelting furnace.

[0004] Chinese utility model patent CN211645306U effectively increases the structural strength of the slag retaining plate body by setting reinforcing ribs on the outer plate surface of the slag retaining plate body, improving its impact resistance and thermal deformation resistance. However, this technical solution is still aimed at the converter steelmaking process and cannot be applied to the side-blown melting furnace.

[0005] It can be seen that the slag retaining plate in the prior art has an unreasonable structure when used in a side-blown smelting furnace, and the slag retaining plate cannot dissipate heat quickly during use, causing the slag retaining plate to be easily deformed under the action of physical and chemical corrosion and high-temperature slag scouring, and has a short service life. Utility Model Content

[0006] The purpose of the utility model is to provide a slag retaining plate for a side-blown molten pool smelting furnace, so as to solve the problems that the existing slag retaining plate proposed in the above background technology is used in the side-blown smelting furnace, the structure is unreasonable, and the slag retaining plate cannot dissipate heat quickly during use, causing the slag retaining plate to be easily deformed under the action of physical and chemical corrosion and high-temperature slag scouring, resulting in a short service life.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A slag retaining plate for a side-blown molten pool smelting furnace, comprising:

[0009] A slag blocking unit, comprising a plate body for blocking slag;

[0010] The heat dissipation unit includes a cooling water jacket which is arranged through the inside of the plate body and is used to continuously pass the cooling medium into the plate body to cool the plate body, and a confluence component which is arranged at the end of the cooling water jacket and is used to input the cooling medium into the cooling water jacket.

[0011] Furthermore, an anti-scour fire-resistant layer for wrapping the plate body is provided on the outer side of the plate body;

[0012] The joint surface between the outer portion of the plate body and the anti-scour refractory layer is a sawtooth-shaped rough surface, which is used to attach the anti-scour refractory layer to the surface of the plate body.

[0013] Furthermore, the plate body is provided with a plurality of through holes for accommodating cooling water jackets, the through holes are arranged at equal intervals and in a line, the cooling water jackets are fixedly inserted in the through holes, and the cooling water jackets correspond to the through holes one by one.

[0014] Furthermore, the axis where the through hole is located is equidistant from the front and rear ends of the plate body, so as to evenly cool the two ends of the plate body.

[0015] Furthermore, the confluence component comprises:

[0016] A liquid separation block, fixedly connected to one end of the cooling water jacket;

[0017] A medium input port, provided at the liquid inlet end of the liquid separation block;

[0018] The liquid inlet holes are arranged inside the liquid separation block, the number of the liquid inlet holes is equal to the number of the cooling water jackets, and the liquid outlet ends of the liquid inlet holes correspond one-to-one to the liquid inlet ends of the cooling water jackets, and are used to allow the cooling medium in the liquid separation block to enter the corresponding cooling water jackets after passing through the liquid inlet holes.

[0019] Furthermore, a slag retaining plate of a side-blown molten pool smelting furnace further includes: a smelting furnace body, a central slag chamber settling area for settling molten metal and slag is provided in the middle area inside the smelting furnace body, and short smelting stirring areas are provided inside the smelting furnace body and on both sides of the central slag chamber settling area;

[0020] An injection port is provided at the upper end of the smelting furnace body and is located directly above the short smelting stirring zone, and is used to inject the smelting material into the short smelting stirring zone;

[0021] A molten metal discharge port is provided on one side of the smelting furnace body and is connected to the bottom of the central slag chamber settling area close to the smelting furnace body, and is used to discharge the molten metal settled in the lower part of the central slag chamber settling area;

[0022] The slag discharge port is arranged on one side of the smelting furnace body and is located directly above the molten metal discharge port, and is used to discharge the slag in the upper part of the central slag chamber sedimentation area.

[0023] Furthermore, the plate is disposed between the central slag chamber settling zone and the short smelting stirring zone and is fixedly connected to the inner side of the smelting furnace body, and is used to prevent the slag on the upper part of the central slag chamber settling zone from entering the short smelting stirring zone;

[0024] A gap is provided between the lower end of the plate body and the bottom of the smelting furnace body, for transferring the molten metal and slag mixture at the bottom of the short smelting stirring zone to the central slag chamber settling zone;

[0025] The cooling water jacket runs through from the inside of the smelting furnace body to the outside of the smelting furnace body, and a seal is arranged between the cooling water jacket and the smelting furnace body to prevent the metal solution inside the smelting furnace body from leaking.

[0026] Compared with the prior art, the beneficial effects of the utility model are:

[0027] The utility model continuously inputs the cooling medium into the liquid separation block through the medium input port. After the cooling medium enters the liquid separation block, it is divided by the liquid inlet hole and enters different cooling water jackets respectively, so that the high temperature in the plate body located outside the cooling water jacket is brought out by the continuously flowing cooling medium, so that the plate body can be cooled in time and quickly during the slag blocking process, thereby achieving the effect of the slag blocking plate being able to quickly dissipate heat during use, avoiding the slag blocking plate from being deformed due to heat, and extending the service life of the slag blocking plate.

[0028] The utility model adopts a serrated rough surface on the outer side of the plate body to block slag. During the slag blocking process, after the plate body is cooled by a cooling medium, the high-temperature molten slag adheres to the serrated rough surface of the plate body and forms an erosion-resistant refractory layer, which greatly reduces the physical erosion and chemical corrosion of the high-temperature molten body on the outside of the plate body, and further improves the thermal stability and impact resistance of the plate body. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0030] Figure 2 This is a front view of the utility model;

[0031] Figure 3 This is a diagram showing the coordination relationship between the plate body and the anti-scour refractory layer of the utility model;

[0032] Figure 4 Figure A is a specific implementation process of the utility model;

[0033] Figure 5 FIG. B is a specific implementation process diagram of the present utility model.

[0034] Figure numerals: 1. slag blocking unit; 2. heat dissipation unit; 11. plate body; 111. through hole; 12. anti-scour refractory layer; 13. joint surface; 21. cooling water jacket; 22. confluence assembly; 221. liquid separator block; 222. liquid inlet hole; 223. medium input port; 3. smelting furnace body; 31. injection port; 32. molten metal discharge port; 33. slag discharge port; 34. short smelting stirring zone; 35. central slag chamber sedimentation zone. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] See also Figure 1-3 , the utility model provides a technical solution:

[0037] A slag retaining plate for a side-blown molten pool smelting furnace, comprising:

[0038] The slag blocking unit 1 comprises a plate body 11 for blocking the slag;

[0039] The heat dissipation unit 2 includes a cooling water jacket 21 which is arranged throughout the plate body 11 and is used to continuously pass the cooling medium into the plate body 11 to cool the plate body 11 , and a confluence component 22 which is arranged at the end of the cooling water jacket 21 and is used to input the cooling medium into the cooling water jacket 21 .

[0040] As an improvement, Figure 2-3 As shown, the outer side of the plate body 11 is provided with an anti-scour fire-resistant layer 12 for wrapping the plate body 11;

[0041] The joint surface 13 between the outer portion of the plate body 11 and the anti-scour refractory layer 12 is a serrated rough surface, which is used to attach the anti-scour refractory layer 12 to the surface of the plate body 11 .

[0042] Further, such as Figure 2 As shown, the plate body 11 is provided with a plurality of through holes 111 for accommodating the cooling water jacket 21 . The through holes 111 are arranged at equal intervals and in a line. The cooling water jacket 21 is fixedly inserted in the through holes 111 . The cooling water jacket 21 corresponds to the through holes 111 one by one.

[0043] Furthermore, the axis of the through hole 111 is equidistant from the front and rear ends of the plate body 11 , so as to evenly cool the two ends of the plate body 11 .

[0044] Among them, Figure 2 As shown, the confluence assembly 22 includes:

[0045] A liquid separation block 221, fixedly connected to one end of the cooling water jacket 21;

[0046] The medium input port 223 is provided at the liquid inlet end of the liquid separation block 221;

[0047] The liquid inlet holes 222 are arranged inside the liquid separator block 221. The number of the liquid inlet holes 222 is equal to the number of the cooling water jackets 21, and the liquid outlet ends of the liquid inlet holes 222 correspond to the liquid inlet ends of the cooling water jackets 21 one by one, so as to allow the cooling medium in the liquid separator block 221 to enter the corresponding cooling water jackets 21 after passing through the liquid inlet holes 222.

[0048] As an improvement, a slag retaining plate of a side-blown molten pool smelting furnace further comprises a smelting furnace body 3, wherein a central slag chamber settling area 35 for settling metal is provided in the middle area inside the smelting furnace body 3, and short smelting stirring areas 34 are provided inside the smelting furnace body 3 and on both sides of the central slag chamber settling area 35;

[0049] An injection port 31 is provided at the upper end of the smelting furnace body 3 and is located directly above the short smelting stirring zone 34, and is used to inject a mixture of metal and slag into the short smelting stirring zone 34;

[0050] The molten metal discharge port 32 is provided at one side of the smelting furnace body 3 and is connected to the central slag chamber settling area 35 near the bottom of the smelting furnace body 3, and is used to discharge the molten metal settled in the lower part of the central slag chamber settling area 35;

[0051] The slag discharge port 33 is provided on one side of the smelting furnace body 3 and is located directly above the molten metal discharge port 32 , and is used to discharge the slag above the central slag chamber settling area 35 .

[0052] Furthermore, the plate 11 is disposed between the central slag chamber settling zone 35 and the short smelting stirring zone 34 and is fixedly connected to the inner side of the smelting furnace body 3 to prevent the slag on the upper part of the central slag chamber settling zone 35 from entering the short smelting stirring zone 34;

[0053] A gap is provided between the lower end of the plate body 11 and the bottom of the smelting furnace body 3, for transferring the molten metal and slag mixture at the bottom of the short smelting stirring zone 34 to the central slag chamber settling zone 35;

[0054] The cooling water jacket 21 penetrates from the inside of the smelting furnace body 3 to the outside of the smelting furnace body 3 , and a seal is arranged between the cooling water jacket 21 and the smelting furnace body 3 to prevent the metal solution inside the smelting furnace body 3 from leaking.

[0055] It should be added that the plate body 11 in the present invention is made of copper with good heat dissipation performance, and the surface of the plate body 11 is roughened by sandblasting to increase the roughness of the outer surface of the plate body 11, which is conducive to the anti-erosion and fire-resistant adhesion to the outer surface of the plate body 11.

[0056] It should be noted that: in the specific implementation process of the utility model, Figure 4-5 As shown, the smelting material is injected from the injection port 31 into the corresponding short smelting stirring zone 34 inside the smelting furnace body 3, the material enters the short smelting stirring zone 34 for smelting, and a mixture of molten metal and slag is formed through strong stirring, and flows into the central slag chamber settling zone 35 along the gap between the plate body 11 and the smelting furnace body 3. In the central slag chamber settling zone 35, the slag and the molten metal are layered, and the slag located in the upper layer is blocked by the plate body 11 and is difficult to enter the short smelting stirring zone 34, completing the slag blocking work. For the molten metal that enters the central slag chamber settling zone 35 and settles at the bottom, the molten metal is extracted at the molten metal discharge port 32, and the slag in the central slag chamber settling zone 35 is extracted at the slag discharge port 33, completing the full separation of the entire molten metal and the molten slag, and the slag blocking effect is good;

[0057] like Figure 1-2 As shown, when the plate body 11 is in the process of blocking slag, since the outside of the plate body 11 is wrapped with slag, the inside of the plate body 11 has a high temperature that is difficult to dissipate quickly. At this time, the cooling medium is continuously input into the liquid separator block 221 through the medium input port 223. After entering the liquid separator block 221, the cooling medium is divided by the liquid inlet hole 222 and enters different cooling water jackets 21 respectively, so that the high temperature in the plate body 11 located outside the cooling water jacket 21 is brought out by the continuously flowing cooling medium, so that the plate body 11 can be cooled down in time and quickly during the slag blocking process, thereby achieving the effect of rapid heat dissipation of the slag blocking plate during use, avoiding the deformation of the slag blocking plate due to heat, and extending the service life of the slag blocking plate;

[0058] In addition, if Figure 1-3 As shown, the utility model uses a serrated rough surface on the outer side of the plate body 11 to block slag. During the slag blocking process, after the plate body 11 is cooled by a cooling medium, the high-temperature slag adheres to the serrated rough surface of the plate body 11 and forms an erosion-resistant refractory layer 12. Under the covering effect of the erosion-resistant refractory layer 12, the physical erosion and chemical corrosion of the high-temperature molten body on the outside of the plate body 11 are greatly reduced, thereby further improving the thermal stability and impact resistance of the plate body 11.

[0059] In addition, the shapes of the smelting furnace body 3 and the slag stop unit 1 are only schematic diagrams. The shapes of the smelting furnace body 3 and the slag stop unit 1 can be changed according to the common knowledge of technicians in this field, and the positional relationship between the slag stop unit 1 and the smelting furnace body 3 can also be changed.

[0060] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A slag retaining plate for a side-blown molten pool smelting furnace, characterized in that: include: A slag blocking unit (1) comprising a plate body (11) for blocking slag; The heat dissipation unit (2) comprises a cooling water jacket (21) which is arranged through the interior of the plate body (11) and is used to continuously pass a cooling medium into the plate body (11) to cool the plate body (11), and a confluence component (22) which is arranged at the end of the cooling water jacket (21) and is used to input the cooling medium into the cooling water jacket (21).

2. The slag baffle of the side-blown molten pool smelting furnace according to claim 1, characterized in that: An anti-scour fireproof layer (12) for wrapping the plate body (11) is provided on the outer side of the plate body (11); The joint surface (13) between the outside of the plate body (11) and the anti-scour refractory layer (12) is a sawtooth-shaped rough surface, which is used to attach the anti-scour refractory layer (12) to the surface of the plate body (11).

3. The slag baffle of the side-blown molten pool smelting furnace according to claim 1, characterized in that: The plate body (11) is provided with a plurality of groups of through holes (111) for accommodating cooling water jackets (21), the through holes (111) are arranged at equal intervals and in a straight line, the cooling water jackets (21) are fixedly inserted in the through holes (111), and the cooling water jackets (21) correspond one-to-one to the through holes (111).

4. The slag baffle of the side-blown molten pool smelting furnace according to claim 3, characterized in that: The axis of the through hole (111) is equidistant from the front and rear ends of the plate body (11), and is used to evenly cool the two ends of the plate body (11).

5. The slag baffle of the side-blown molten pool smelting furnace according to claim 4, characterized in that: The confluence assembly (22) comprises: A liquid separation block (221) fixedly connected to one end of the cooling water jacket (21); A medium input port (223) is provided at the liquid inlet end of the liquid separation block (221); The liquid inlet holes (222) are arranged inside the liquid separation block (221); the number of the liquid inlet holes (222) is equal to the number of the cooling water jackets (21); and the liquid outlet ends of the liquid inlet holes (222) correspond to the liquid inlet ends of the cooling water jackets (21) in a one-to-one manner, and are used to allow the cooling medium in the liquid separation block (221) to enter the corresponding cooling water jackets (21) through the liquid inlet holes (222).

6. The slag baffle of the side-blown molten pool smelting furnace according to claim 1, characterized in that: Also includes: A smelting furnace body (3), wherein a central slag chamber settling area (35) for settling molten metal and slag is provided in a middle area inside the smelting furnace body (3), and short smelting stirring areas (34) are provided inside the smelting furnace body (3) and on both sides of the central slag chamber settling area (35); An injection port (31) is provided at the upper end of the smelting furnace body (3) and is located directly above the short smelting stirring zone (34), and is used to inject smelting materials into the short smelting stirring zone (34); a molten metal discharge port (32) disposed on one side of the smelting furnace body (3) and connected to the bottom of the central slag chamber settling area (35) close to the smelting furnace body (3), and used for discharging the molten metal settled in the lower part of the central slag chamber settling area (35); A slag discharge port (33) is provided on one side of the smelting furnace body (3) directly above the molten metal discharge port (32) and is used to discharge the slag in the upper part of the central slag chamber settling area (35).

7. The slag baffle of the side-blown molten pool smelting furnace according to claim 6, characterized in that: The plate body (11) is disposed between the central slag chamber settling zone (35) and the short smelting stirring zone (34) and is fixedly connected to the inner side of the smelting furnace body (3) to prevent the slag on the upper part of the central slag chamber settling zone (35) from entering the short smelting stirring zone (34); A gap is provided between the lower end of the plate body (11) and the bottom of the smelting furnace body (3), for transferring the molten metal and slag mixture at the bottom of the short smelting stirring zone (34) to the central slag chamber settling zone (35); The cooling water jacket (21) extends from the inside of the smelting furnace body (3) to the outside of the smelting furnace body (3), and a seal is provided between the cooling water jacket (21) and the smelting furnace body (3) to prevent leakage of the metal solution inside the smelting furnace body (3).

Images