Slag-iron separation device

Abstract

The utility model provides a slag-iron separating device, which belongs to the technical field of steelmaking and comprises a ladle, a blowing slag-driving mechanism and a slagging-off mechanism. The hot metal ladle comprises a hot metal ladle body, a large ladle nozzle and a small ladle nozzle which are arranged on the two sides of the top of the hot metal ladle body respectively, and a slag baffle vertically inserted into the large ladle nozzle. When the ladle is tipped to a preset iron mixing angle to mix iron into the converter, the edge of a slag layer in the ladle body is higher than the bottom end of the slag baffle, and pure molten iron flows out from a circulating gap below the slag baffle; an air outlet of the air blowing and slag driving mechanism is located below the liquid level of molten iron of the ladle body when working, and the upper direction control structure of the air blowing and slag driving mechanism is arranged above the ladle body; the slagging-off mechanism is arranged on a platform on the small ladle nozzle side of the ladle, and a slagging-off part of the slagging-off mechanism is located on the top face of a slag layer of the ladle body. The problems that in the prior art, slagging-off dead corners exist on the wall of the ladle, slagging-off is incomplete, and the later slagging-off time accounts for a long time of a molten iron desulfurization procedure can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steelmaking, and more specifically to a slag-iron separation device. Background Art

[0002] Sulfur is a harmful element in most steel grades. High sulfur content in steel will greatly reduce the processing performance and performance of steel. Limestone desulfurizer or magnesium desulfurizer (Na2CO3, CaC 2、 The molten iron is pre-treated with desulfurization agent (CaO and Mg, etc.) to reduce the content of harmful elements such as [S] and [P] in the molten iron before the steelmaking furnace, so as to provide qualified molten iron for steelmaking.

[0003] At present, the general process flow of hot metal desulfurization pretreatment is: hot metal entering the station - front slag removal (removing blast furnace slag) - temperature measurement and sampling - adding desulfurizer - rear slag removal (removing desulfurization slag) - temperature measurement and sampling - hot metal leaving the station. Hot metal from the blast furnace contains a large amount of blast furnace slag. Removing the original slag in the hot metal has a great role in reducing the consumption of desulfurizers and improving desulfurization efficiency. After the pretreatment of desulfurized hot metal, there is a large amount of desulfurization slag in the hot metal ladle. In order to avoid backsulfurization and prevent the loss of hot metal, these slags need to be removed.

[0004] For the iron slag in the ladle, a slag scraper is usually used to directly scrape the slag to separate and remove the iron slag from the molten iron. Due to the large amount of desulfurization slag in the ladle and the existence of dead corners for slag removal on the ladle wall, it is easy to cause difficulty in slag iron removal and incomplete slag removal, so that high-concentration desulfurization slag enters the converter steelmaking process, causing high sulfur return in the converter steelmaking process, seriously affecting production efficiency and steel output. In addition, the existing molten iron desulfurization slag removal needs to go through two processes, front and rear slag removal, before it can be added to iron. The time for rear slag removal accounts for about 20% of the time of the molten iron desulfurization process, which causes the iron slag separation operation time to occupy a long time of the molten iron desulfurization production process time. Utility Model Content

[0005] In view of the above problems, the purpose of the utility model is to provide a slag-iron separation device to solve the problems in the prior art, such as the difficulty in removing slag and incomplete slag removal due to the large amount of desulfurization slag in the ladle and the existence of dead corners for slag removal on the ladle wall, which causes high-concentration desulfurization slag to enter the converter steelmaking process, resulting in high sulfur return during converter steelmaking, seriously affecting production efficiency and steel output, and the removal of molten iron desulfurization slag requires two processes, front and rear slag removal, before it can be added to iron, and the time for rear slag removal accounts for about 20% of the time of the molten iron desulfurization process, resulting in the iron-slag separation operation time taking up a long time of the molten iron desulfurization production process, etc.

[0006] The utility model provides a slag-iron separation device, comprising a molten iron ladle, an air-blowing slag-removing mechanism, a slag-scraping mechanism and a slag-containing container; wherein the molten iron ladle comprises a molten iron ladle body, a large ladle spout and a small ladle spout respectively arranged on opposite sides of the top of the molten iron ladle body, and a slag-blocking plate vertically inserted inside the large ladle spout; the top of the slag-blocking plate is flush with the ladle edge of the molten iron ladle body; a molten iron flow gap is provided between the bottom end of the slag-blocking plate and the large ladle spout; when the molten iron ladle is overturned to a preset iron-adding angle, the edge of the slag layer in the molten iron ladle body is higher than the bottom end of the slag-blocking plate; the air outlet of the air-blowing slag-removing mechanism is below the molten iron liquid level of the molten iron ladle body when working, and the upper direction control structure of the air-blowing slag-removing mechanism is arranged above the molten iron ladle body; the slag-scraping mechanism is arranged on a platform on the small ladle spout side of the molten iron ladle, and the slag-scraping part of the slag-scraping mechanism is located on the top surface of the slag layer of the molten iron ladle body; the slag-containing container is arranged below the small ladle spout.

[0007] In addition, a preferred solution is that the air-blowing slag-removing mechanism includes a track arranged above the ladle, a fixed connecting seat slidably arranged on the track at the upper end, a fixed support rotatably connected to the lower part of the fixed connecting seat at the upper end, and an air-blowing slag-removing gun head installed at the lower part of the fixed support; when the air outlet of the air-blowing slag-removing gun head is working, it is arranged inside the molten iron of the ladle body; the surface formed by the rotation and swinging direction of the fixed support is perpendicular to the full-length direction of the track.

[0008] In addition, a preferred solution is that the upper end of the fixed support is connected to the fixed connecting seat through a connecting shaft.

[0009] In addition, a preferred solution is that the air blowing slag removal gun head is detachably mounted on the lower part of the fixed support along the length direction of the fixed support.

[0010] In addition, a preferred solution is that the air blowing slag removal gun head is a hollow high-temperature resistant tubular structure; and a nitrogen source is connected to the top of the high-temperature resistant tubular structure.

[0011] In addition, a preferred solution is that the high temperature resistant tubular structure is a telescopic tube structure.

[0012] In addition, a preferred solution is that a fire-resistant anti-slag coating layer is provided on the outer side wall of the high-temperature resistant tubular structure.

[0013] In addition, a preferred solution is that the slag retaining plate is an arc-shaped plate; the arc-shaped opening of the arc-shaped plate is arranged opposite to the arc-shaped outer contour of the large ladle spout.

[0014] In addition, a preferred solution is that the slag blocking plate is fixed inside the large ladle spout via a detachable mechanism.

[0015] In addition, a preferred solution is that the slag retaining plate is a heat-resistant cast steel plate; and a fire-resistant anti-slag coating layer is provided on the surface of the slag retaining plate.

[0016] It can be seen from the above technical scheme that the slag-iron separation device provided by the utility model can drive the blast furnace slag (original slag) on ​​the molten iron surface to gather on the side of the small ladle mouth during the front slag removal process through the design of the air-blowing slag-removing mechanism, thereby reducing the slag removal dead zone near the rear side wall of the ladle during the front slag removal process, making the slag removal more complete and thorough, reducing the subsequent desulfurization agent consumption, and improving the slag removal efficiency; by vertically inserting a slag retaining plate inside the large ladle mouth, utilizing the different densities of slag and iron, controlling the slag layer edge of the desulfurization slag of the ladle to be higher than the slag retaining plate, during the iron addition process, the desulfurization slag is effectively blocked in the ladle body, Prevent high-concentration desulfurization slag from entering the converter steelmaking process to ensure steel production; compared with the prior art, the utility model makes the front slag removal more complete and thorough through the design of the air-blowing slag-removing mechanism, simplifies the difficulty of slag removal, improves the slag removal efficiency, and reduces the subsequent desulfurization agent consumption; through the slag retaining plate vertically inserted inside the large ladle mouth, the process of post-slag removal is saved, and there is no need to perform post-slag removal. After the molten iron is desulfurized, iron is directly added to the converter. After the iron is added, the desulfurization slag from the molten iron ladle can be hoisted to the slag span for slag dumping, which does not occupy the production process time, reduces the molten iron desulfurization process time, and effectively improves the production efficiency of the overall process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By referring to the following description in conjunction with the accompanying drawings, and with a more comprehensive understanding of the present invention, other purposes and results of the present invention will become more clear and easy to understand. In the accompanying drawings:

[0018] Figure 1 This is a schematic structural diagram of the slag-iron separation device according to an embodiment of the utility model when in use;

[0019] Figure 2 It is a structural schematic diagram of the ladle when adding iron according to an embodiment of the utility model;

[0020] Figure 3 It is a front structural schematic diagram of a molten iron ladle according to an embodiment of the utility model;

[0021] Figure 4 It is a schematic diagram of the side structure of the iron ladle according to an embodiment of the utility model;

[0022] Figure 5 It is a schematic diagram of the top view of the iron ladle according to an embodiment of the utility model;

[0023] Figure 6 This is a structural schematic diagram of an air blowing slag-removing mechanism according to an embodiment of the utility model;

[0024] Figure 7The present invention is a flow chart of using the slag-iron separation device of the present invention to separate slag-iron.

[0025] In the attached drawings, 1- ladle, 11- ladle body, 12- large ladle spout, 13- slag baffle plate, 14- small ladle spout, 2- air blowing slag removal mechanism, 21- track, 22- fixed connecting seat, 23- fixed support, 24- air blowing slag removal gun head, 25- connecting shaft, 26- nitrogen source, 27- gear, 3- slag removal mechanism, 4- slag container, 5- slag layer.

[0026] The same reference numerals throughout the drawings indicate similar or corresponding features or functions. DETAILED DESCRIPTION

[0027] In the following description, for the purpose of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. However, it is apparent that these embodiments may also be implemented without these specific details.

[0028] In view of the above-mentioned prior art, due to the large amount of desulfurization slag in the molten iron ladle and the existence of dead corners for slag removal on the wall of the molten iron ladle, slag and iron removal is difficult and the slag removal is incomplete, so that high-concentration desulfurization slag enters the converter steelmaking process, causing high sulfur return during converter steelmaking, seriously affecting production efficiency and steel output, and the molten iron desulfurization slag removal needs to go through two processes, front and rear slag removal, before it can be added to iron, and the rear slag removal time accounts for about 20% of the molten iron desulfurization process time, which causes the iron-slag separation operation time to occupy a long time of the molten iron desulfurization production process time. A slag-iron separation device is proposed.

[0029] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] In order to illustrate the slag iron separation device provided by the utility model, Figure 1 The structure of the slag-iron separation device according to the embodiment of the utility model when in use is shown; Figure 2 The structure of the ladle when adding iron according to the embodiment of the utility model is shown; Figure 3 The front structure of the ladle according to the embodiment of the utility model is shown; Figure 4 The side structure of the iron ladle according to the embodiment of the utility model is shown; Figure 5 The top view structure of the iron ladle according to the embodiment of the utility model is shown; Figure 6 The structure of the air blowing and slag removing mechanism according to the embodiment of the utility model is shown; Figure 7 The present invention shows a process of separating slag from iron using the slag-iron separation device according to an embodiment of the present invention.

[0031] like Figures 1 to 7As shown together, the slag-iron separation device provided by the utility model comprises a molten iron ladle 1, an air-blowing slag-removing mechanism 2 and a slag-removing mechanism 3; wherein,

[0032] The iron ladle comprises an iron ladle body 11, a large ladle spout 12 and a small ladle spout 14 respectively arranged on opposite sides of the top of the iron ladle body 11, and a slag retaining plate 13 vertically inserted inside the large ladle spout 12; the top of the slag retaining plate 13 is flush with the ladle edge of the iron ladle body 11; a molten iron flow gap is provided between the bottom end of the slag retaining plate 13 and the large ladle spout 12; when the iron ladle 1 is tilted to a preset iron addition angle, the edge of the slag layer 5 in the iron ladle body 11 is higher than the bottom end of the slag retaining plate 13;

[0033] When the air outlet of the air-blowing and slag-removing mechanism 2 is working, the upper direction control structure of the air-blowing and slag-removing mechanism 2 is arranged above the ladle body 11 below the molten iron liquid level of the ladle body 11;

[0034] The slag removal mechanism 3 is arranged on a platform at the side of the small ladle spout 14 of the ladle 1 , and the slag removal part of the slag removal mechanism 3 is located on the top surface of the slag layer of the ladle body 11 .

[0035] The slag removal mechanism 3 is a slag removal machine, which can be any type of slag removal machine currently in the art, as long as it can remove the blast furnace slag floating on the molten iron liquid surface of the ladle 1, and the utility model does not make any special limitation on this.

[0036] The top of the slag retaining plate 13 is flush with the edge of the ladle body 11, ensuring that the normal operation of the slag removal mechanism 13 is not affected; a molten iron flow gap is provided between the bottom of the slag retaining plate 13 and the ladle mouth 12, so that the molten iron can flow out from the lower end of the slag retaining plate 13 into the ladle mouth 12. When the ladle is tipped over to add iron to the converter, due to the different densities of slag and iron, the desulfurization slag floats on the surface of the molten iron. When the ladle 1 is tipped over, the edge of the slag layer 5 of the ladle 1 is controlled not to be lower than the slag retaining plate 13, so that only pure molten iron can flow out from under the slag retaining plate 13 through the ladle mouth 12, and the effect of completely separating the molten iron and the slag can be achieved without post-slag removal, saving about 6 minutes of molten iron desulfurization process time, improving production efficiency, and greatly reducing production costs.

[0037] As a preferred solution of the utility model, it also includes a slag container 4, which is arranged below the small ladle spout 14. The blast furnace slag scraped out from the ladle 1 by the slag scraping mechanism 3 falls into the slag container 4. The slag container 4 is preferably, but not limited to, a slag pot.

[0038] Through the design of the air-blowing slag-removing mechanism 2, during the front slag-removing process, the blast furnace slag (original slag) on ​​the molten iron surface can be driven to gather on the side of the small ladle mouth 14, thereby reducing the slag-removing dead zone near the rear side wall of the ladle 1 during the front slag-removing process, making the slag-removing more complete and thorough, reducing the subsequent desulfurization agent consumption, and improving the slag-removing efficiency; by vertically inserting a slag retaining plate 13 inside the large ladle mouth 12, utilizing the different densities of slag and iron, the edge of the slag layer 5 of the desulfurization slag of the ladle 1 is controlled to be higher than the slag retaining plate 13, and during the iron adding process, the desulfurization slag is effectively blocked in the ladle body 11, avoiding high-concentration desulfurization slag from entering the converter steelmaking process, and ensuring steel production.

[0039] As a preferred embodiment of the utility model, the air-blowing slag-removing mechanism 2 includes a track 21 arranged above the ladle 1, a fixed connecting seat 22 slidably arranged on the track 21 at the upper end, a fixed support 23 rotatably connected to the lower part of the fixed connecting seat 22 at the upper end, and an air-blowing slag-removing gun head 24 installed at the lower part of the fixed support 23; when the air outlet of the air-blowing slag-removing gun head 24 is working, it is inserted into the molten iron in the ladle body 11; the surface formed by the rotation and swinging direction of the fixed support 23 is perpendicular to the full length direction of the track 21.

[0040] It should be noted that the air-blowing slag-removing gun head 24 is inserted into the molten iron when working and needs to be put away when not working, which does not affect the normal operation of the ladle 1. The air inlet is set at the end of the gun head away from the molten iron liquid surface and moves with the gun head.

[0041] The track 21 can be arranged below the original platform above the ladle 1, and the fixed connection seat 22 can be slidably connected to the track 21 by setting a slider or pulley structure matching the track 21 on the top thereof, and the fixed connection seat 22 can move along the full length direction of the track 21, and the upper end of the fixed support 23 is rotatably connected to the lower part of the fixed connection seat 22, and the surface formed by the rotation and swinging direction of the fixed support 23 is perpendicular to the full length direction of the track 21, for example, Figure 6 As shown, the longitudinal direction of the track 21 is the front-to-back direction, and the fixed support 23 can be swung left and right for adjustment, so that the position adjustment end of the air-blowing slag-removing mechanism 2 located above the molten iron ladle 1 can be adjusted at multiple angles front, back, left, and right, thereby driving the air-blowing slag-removing gun head 24 to adjust its position at multiple angles.

[0042] As a preferred solution of the utility model, the upper end of the fixed support 23 is connected to the fixed connection seat 22 through a connecting shaft 25. The upper end of the fixed support 23 is preferably but not limited to being connected to the fixed connection seat 22 through a connecting shaft 25, so that the upper end of the fixed support 23 is rotatably connected to the lower part of the fixed connection seat 22.

[0043] As a preferred solution of the utility model, the air blowing slag driving gun head 24 is detachably mounted on the lower part of the fixed support 23 along the length direction of the fixed support 23 .

[0044] For example, a clamping column is provided at the bottom of the air-blowing slag-removing gun head 24; at least two clamping grooves matching the clamping column are provided along the length direction of the fixed support 23, and the clamping column is inserted into the clamping groove. The depth of the air-blowing slag-removing gun head 24 inserted into the molten iron liquid surface can be adjusted according to the position of the clamping groove into which the clamping column is inserted. Of course, the connection method between the air-blowing slag-removing gun head 24 and the fixed support 23 is not limited to the above structure, and can also be replaced by other structures. For example, a gear 27 is provided along the length direction of the fixed support 23, and a rack structure matching the gear 27 is provided on the outer wall of the air-blowing slag-removing gun head 24. The air-blowing slag-removing gun head 24 is installed on the fixed support 23 through the meshing between the rack structure and the gear 27. By rotating the gear 27, the length of the lower end of the air-blowing slag-removing gun head 24 inserted into the molten iron can be driven. The above two connection methods can facilitate the replacement of the air-blowing slag-removing gun head 24 and the adjustment of the insertion depth into the molten iron.

[0045] As a preferred solution of the utility model, the air blowing slag removal gun head 24 is a hollow high temperature resistant tubular structure; a nitrogen source 26 is connected to the top of the high temperature resistant tubular structure.

[0046] Nitrogen is passed through the pipe of the air-blowing slag-removing gun head 24. The nitrogen source 26 is an inert gas source. Of course, it can also be connected to other inert gas sources, and the present invention does not make any special restrictions on this. The rising and expansion of nitrogen bubbles drive the blast furnace slag on the molten iron liquid level in the ladle body 11 to gather toward the small ladle mouth 14, achieving the effect of air-blowing slag-removing. The air-blowing slag-removing gun head 24 is preferably a detachable and replaceable structure.

[0047] As a preferred solution of the utility model, the high temperature resistant tubular structure is a telescopic tube structure, which can further adjust the insertion depth of the air blowing slag driving gun head 24 in the molten iron.

[0048] As a preferred solution of the utility model, a fire-resistant anti-slag coating layer is provided on the outer wall of the high-temperature resistant tubular structure, thereby extending the service life of the air-blowing slag-removing gun head 24.

[0049] As a preferred solution of the utility model, the slag retaining plate 13 is an arc-shaped plate; the arc-shaped opening of the arc-shaped plate is arranged opposite to the arc-shaped outer contour of the large ladle spout 12, so as to facilitate the molten iron to flow out of the large ladle spout 12.

[0050] As a preferred solution of the utility model, the slag blocking plate 13 is fixed inside the ladle spout 12 by a detachable mechanism. It can be detached and replaced after multiple uses, and the detachable mechanism is preferably but not limited to a bolt.

[0051] As a preferred solution of the utility model, the slag retaining plate 13 is a heat-resistant cast steel plate; a fire-resistant anti-slag coating layer is provided on the surface of the slag retaining plate 13 .

[0052] The slag retaining plate 13 is corroded by high-temperature slag and molten iron, and its wear rate is fast. Compared with the ordinary steel plate used for the slag plate on the usual slag remover, the heat-resistant cast steel has higher thermal strength, and the cost of cast steel is lower than that of carbon steel. The surface of the slag retaining plate 13 can be coated with a refractory anti-slag coating to form a refractory anti-slag coating layer.

[0053] The utility model can be applicable to high-temperature liquid metal and is used in the process of KR molten iron desulfurization and slagging to perform slagging and quickly complete slag and iron separation, and its use range is 1250-1450°C.

[0054] The slag-iron separation device of the utility model is used to separate slag-iron from molten iron, comprising the following steps:

[0055] S1, tilt the incoming molten iron ladle 1 toward the small ladle spout 14 to a preset front slag removal angle, blow inert gas into the molten iron in the ladle body 11 through the air blowing slag driving mechanism 2, and use the rising bubbles of the inert gas and the resulting expansion to drive the blast furnace slag on the molten iron liquid level in the ladle body 11 to gather toward the small ladle spout 14;

[0056] S2, when there is no blast furnace slag in the slag removal dead zone near the rear wall of the ladle body 11, the blast furnace slag on the molten iron liquid surface is removed by the slag removal mechanism 3 to complete the front slag removal process of the molten iron in the ladle 1;

[0057] S3, returning the tilt angle of the ladle after the front slag removal treatment to the normal position, and performing desulfurization treatment on the molten iron in the ladle body 11 to generate desulfurization slag in the ladle body 11;

[0058] S4, transporting the ladle 1 producing desulfurization slag to the iron adding position, and tilting the ladle 1 toward the large ladle mouth 12 to a preset iron adding angle, and when the edge of the slag layer 5 of the desulfurization slag in the ladle body 11 is higher than the bottom end of the slag blocking plate 13, the molten iron in the ladle body 11 is added into the converter, and the desulfurization slag is blocked in the ladle body 11 by the slag blocking plate 13;

[0059] S5. The iron-added ladle is hoisted to the slag span, and the desulfurized slag in the ladle body 11 is poured into a preset slag container to complete the slag-iron separation process of the molten iron.

[0060] The specific steps are as follows: the molten iron ladle 1 from the blast furnace is transported to the desulfurization work station by a tipping tank car, the molten iron ladle is tipped to a certain angle, and the air-blowing slag-removing mechanism 2 is moved to the front and rear positions where slag removal is required through the track 21 according to the position of the slag, and the left and right positions of the fixed support 23 are adjusted by the connecting shaft 25, and then the insertion depth of the air-blowing slag-removing gun head 24 into the liquid surface is adjusted by the gear 27 on the fixed support 23, and inert gas is introduced into the air-blowing slag-removing gun head 24 to drive the desulfurization slag away from the side of the small ladle mouth to gather at the small ladle mouth 14, thereby reducing the slag removal dead zone near the rear wall of the molten iron ladle 1, and at the same time, the slag removal mechanism 3 is cooperated to remove the desulfurization slag into the slag container 4, and the slag on the molten iron liquid surface is removed as cleanly as possible.

[0061] The iron ladle 1 returns to the normal position and adds desulfurizer. After desulfurization is completed, the iron ladle 1 does not perform post-slag removal. The iron ladle 1 is directly hoisted to the converter by the overhead crane. The iron ladle 3 is tilted to the side of the large ladle mouth 12 to pour molten iron into the converter. When the iron ladle 1 is tilted to add iron to the converter, due to the different densities of slag and iron, the desulfurization slag floats on the surface of the molten iron. The edge of the slag layer 5 of the iron ladle 1 is controlled not to be lower than the slag retaining plate 13. In this way, only pure molten iron flows out from under the slag retaining plate 13 through the large ladle mouth 12, and the effect of completely separating molten iron and slag can be achieved without post-slag removal. After adding iron, the iron ladle can be hoisted to the slag span to pour the desulfurization slag into the slag container, which does not occupy the production process time, reduces the molten iron desulfurization process time by about 6 minutes, improves production efficiency, and reduces production costs. It can be seen from the above specific implementation methods that the slag-iron separation device provided by the utility model can drive the blast furnace slag (original slag) on ​​the molten iron surface to gather on the side of the small ladle mouth during the front slag removal process through the design of the air-blowing slag-removing mechanism, thereby reducing the slag removal dead zone near the rear side wall of the ladle during the front slag removal process, making the slag removal more complete and thorough, reducing the subsequent desulfurization agent consumption, and improving the slag removal efficiency; by vertically inserting a slag retaining plate inside the large ladle mouth, utilizing the different densities of slag and iron, controlling the slag layer edge of the desulfurization slag of the ladle to be higher than the slag retaining plate, and effectively blocking the desulfurization slag within the ladle body during the iron addition process. , avoiding high-concentration desulfurization slag from entering the converter steelmaking process and ensuring steel production; compared with the prior art, the utility model makes the front slag removal more complete and thorough through the design of the air-blowing slag-removing mechanism, simplifies the difficulty of slag removal, improves the slag removal efficiency, and reduces the subsequent desulfurization agent consumption; through the slag retaining plate vertically inserted inside the large ladle mouth, the process of post-slag removal is saved, and there is no need to perform post-slag removal. After the molten iron is desulfurized, iron is directly added to the converter. After the iron is added, the desulfurization slag of the molten iron ladle can be hoisted to the slag span for slag removal, which does not occupy the production process time, reduces the molten iron desulfurization process time, and effectively improves the production efficiency of the overall process.

[0062] As described above, the slag iron separation device proposed by the utility model is described in an exemplary manner with reference to the accompanying drawings. However, those skilled in the art should understand that various improvements can be made to the slag iron separation device proposed by the utility model without departing from the content of the utility model. Therefore, the protection scope of the utility model should be determined by the content of the attached claims.

Claims

1. A slag iron separation device, characterized in that: It includes a molten iron ladle, an air blowing and slag-removing mechanism, a slag-removing mechanism and a slag container; among which, The ladle comprises a ladle body, a large ladle spout and a small ladle spout respectively arranged on opposite sides of the top of the ladle body, and a slag retaining plate vertically inserted inside the large ladle spout; the top of the slag retaining plate is flush with the ladle edge of the ladle body; a molten iron flow gap is provided between the bottom end of the slag retaining plate and the large ladle spout; when the ladle is tilted to a preset iron addition angle, the edge of the slag layer in the ladle body is higher than the bottom end of the slag retaining plate; The air outlet of the air-blowing and slag-removing mechanism is below the molten iron level of the ladle body when in operation, and the upper direction control structure of the air-blowing and slag-removing mechanism is arranged above the ladle body; The slag removal mechanism is arranged on a platform at the small ladle mouth side of the ladle, and the slag removal part of the slag removal mechanism is located on the top surface of the slag layer of the ladle body; The slag container is arranged below the small ladle spout.

2. The slag-iron separation device according to claim 1, characterized in that: The air-blowing slag-removing mechanism comprises a track arranged above the ladle, a fixed connection seat slidably arranged on the track at the upper end, a fixed support rotatably connected to the lower part of the fixed connection seat at the upper end, and an air-blowing slag-removing gun head installed at the lower part of the fixed support; When the air outlet of the air-blowing slag-removing gun head is in operation, it is arranged inside the molten iron of the ladle body; the surface formed by the rotation and swinging direction of the fixed support is perpendicular to the through-length direction of the track.

3. The slag-iron separation device according to claim 2, characterized in that: The upper end of the fixed support is connected to the fixed connection seat through a connecting shaft.

4. The slag-iron separation device according to claim 2, characterized in that: The air blowing slag driving gun head is detachably mounted on the lower part of the fixed support along the length direction of the fixed support.

5. The slag-iron separation device according to claim 2, characterized in that: The air blowing slag driving gun head is a hollow high temperature resistant tubular structure; A nitrogen source is connected to the top of the high temperature resistant tubular structure.

6. The slag-iron separation device according to claim 5, characterized in that: The high temperature resistant tubular structure is a telescopic tube structure.

7. The slag-iron separation device according to claim 5, characterized in that: A fire-resistant and anti-sticking slag coating layer is arranged on the outer side wall of the high-temperature resistant tubular structure.

8. The slag-iron separation device according to claim 1, characterized in that: The slag blocking plate is a curved plate; The arc-shaped opening of the arc-shaped plate is arranged opposite to the arc-shaped outer contour of the large ladle spout.

9. The slag-iron separation device according to claim 1, characterized in that: The slag blocking plate is fixed inside the large ladle spout through a detachable mechanism.

10. The slag-iron separation device according to claim 1, characterized in that: The slag retaining plate is a heat-resistant cast steel plate; A fire-resistant and anti-sticking slag coating layer is arranged on the surface of the slag baffle plate.

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