Rotary molten steel ladle leakage baking system

Abstract

The utility model discloses a rotary molten steel ladle baking system which comprises a rotary table, a plurality of placing tables used for placing molten steel ladles, a plurality of baking devices, a plurality of baking devices, a plurality of baking devices and a plurality of baking devices, and is characterized in that the rotary table rotates to drive the placing tables to exchange positions; the heating assembly is movably arranged above the rotating table in a lifting mode, and the heating assembly is provided with an initial position and a heating position; the molten steel ladle is provided with a heating cavity with a top opening, the heating assembly comprises a cover plate and a spray gun, and the area of the cover plate is not smaller than that of the top opening of the heating cavity; a spray gun of the heating assembly located at the heating position extends into a heating cavity of the molten steel leakage ladle located on the placing table; the first lifting structure is used for taking and placing the molten steel ladle on the placing table; the second lifting structure is used for driving the heating assembly to lift. According to the rotary type molten steel ladle leakage baking system, the baking efficiency can be effectively improved, the operation risk is reduced, and then the atomization quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery raw material pretreatment equipment, in particular to a rotary molten steel ladle baking system. Background Art

[0002] The atomization powder making method is a powder preparation method that uses a fast-moving fluid (atomizing medium) to impact or otherwise break up metal or alloy liquid into fine droplets, which are then condensed into solid powder. The most widely used of these methods are water atomization and gas atomization. The water atomization process is to pour the molten steel into a tundish after smelting, and then the tundish controls the molten steel to be injected into the steel ladle at a constant rate. The bottom liquid outlet of the steel ladle is connected to a continuous water atomization device, and metal powder with a specified particle size range is obtained through the water atomization device.

[0003] The steel ladle is an important part of the steel pouring process. It plays a role in receiving the flow rate of the steel and the secondary compressed steel flow. At the same time, the steel ladle needs to be baked. The baking quality has a great impact on the success of continuous pouring. If the baking is not in place, it is easy to cause a blockage accident. At present, the baking method for the steel ladle is to place the steel ladle on a baking rack, and then manually move the baking rack to the bottom of the natural gas spray gun for ignition and baking. During the baking process, the baking temperature is manually detected. After the baking is completed, the baking rack is moved and the steel ladle is hoisted to the atomization device. The above process has the problems of low baking efficiency, troublesome transportation, high labor cost, and high operation risk. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a rotary molten steel ladle baking system, which can effectively improve the baking efficiency and baking effect, reduce the transfer process, improve the degree of automation, and reduce the operation risk.

[0005] The rotary steel ladle baking system according to the embodiment of the utility model comprises:

[0006] A rotating table, having a plurality of placement tables for placing molten steel ladles, wherein the rotation of the rotating table can drive the plurality of placement tables to exchange positions;

[0007] A heating assembly is movably lifted and arranged above the rotating table, and the heating assembly has an initial position and a heating position; the molten steel ladle has a heating chamber with an opening at the top, and the heating assembly includes a cover plate and a spray gun, and the area of ​​the cover plate is not less than the opening area at the top of the heating chamber; when the heating assembly is in the heating position, the spray gun extends into the heating chamber of the molten steel ladle located on the placement table;

[0008] A first lifting structure is used to take and place the molten steel ladle on the placement table;

[0009] The second lifting structure is used to drive the heating component to rise and fall.

[0010] The rotary steel ladle baking system according to the embodiment of the utility model has at least the following beneficial effects:

[0011] By placing a molten steel ladle on a rotating table and arranging multiple placement tables on the rotating table, the molten steel ladle can be replaced by exchanging the positions of the placement tables without manual handling, and continuous operation of the heating component can be achieved, thereby improving the efficiency of replacing the molten steel ladle and the baking efficiency of the heating component; a first lifting structure and a second lifting structure are provided, which can realize the automatic movement of the heating component and the molten steel ladle, reduce manual work, and reduce operational risks; the heating component includes a cover plate, and the area of ​​the cover plate is larger than the opening area of ​​the top of the heater of the molten steel ladle, thereby reducing heat loss and improving baking quality.

[0012] According to some embodiments of the present invention, the heating assembly further includes a temperature measuring device, and the temperature measuring device is installed on the cover plate.

[0013] According to some embodiments of the present invention, a plurality of spray guns are provided, and the plurality of spray guns are evenly spaced around the periphery of the temperature measuring device.

[0014] According to some embodiments of the present invention, the spray gun is disposed through the cover plate, and the spray gun can be raised and lowered relative to the cover plate.

[0015] According to some embodiments of the present invention, the air intake flow rate of the spray gun is adjustable.

[0016] According to some embodiments of the present invention, a ring edge extending downward is provided on the peripheral side of the cover plate.

[0017] According to some embodiments of the present invention, when the heating assembly is in the heating position, there is a distance between the cover plate and the top of the molten steel ladle.

[0018] According to some embodiments of the present invention, when the heating assembly is in the heating position, the distance between the cover plate and the top of the molten steel ladle is 2 cm to 3 cm.

[0019] According to some embodiments of the present invention, a heat insulation structure is installed on the top of the placement table.

[0020] According to some embodiments of the utility model, a placement groove is provided on the top of the placement table for the molten steel ladle to be partially embedded, and the heat insulation structure is installed in the placement groove.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the heating component of the embodiment of the utility model when it is in the heating position;

[0025] Figure 3 It is a structural schematic diagram of a placement table according to an embodiment of the utility model.

[0026] Figure Number:

[0027] Rotating table 100, placing table 110, placing tank 111, heat insulation structure 120;

[0028] Heating assembly 200, cover plate 210, ring edge 211, spray gun 220, temperature measuring device 230;

[0029] A first lifting structure 300;

[0030] A second lifting structure 400;

[0031] Molten steel ladle 500 and heating chamber 510. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0035] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0036] The molten steel leaking ladle 500 is a device for supplying molten steel to the atomizing device in the atomizing powder making method. In order to improve the atomization quality, the molten steel leaking ladle 500 generally needs to be baked to avoid a blockage accident. The main reason for the blockage accident is that the refractory materials and refractory bricks in the molten steel leaking ladle 500 are not baked in place. The refractory materials and refractory bricks that are not baked in place have poor scouring resistance. Under the scouring of high-temperature molten steel, the surface particles of the refractory materials and refractory bricks are easy to fall off, and the larger particles that fall off are easy to block the liquid outlet of the molten steel leaking ladle 500; secondly, because the refractory materials and refractory bricks are not baked in place, that is, the temperature of the refractory materials and refractory bricks is relatively low, the temperature difference between the molten steel and the surface of the refractory material is large, which will cause the molten steel to cool rapidly and form a steel nodule, thereby blocking the liquid outlet of the molten steel leaking ladle 500. Therefore, the molten steel leaking ladle 500 must be baked to a specified temperature and ensure that the surface of the refractory material is heated evenly to improve the atomization quality.

[0037] Currently, most methods of baking the molten steel ladle 500 are to place the molten steel ladle 500 on a baking rack, and then manually move the baking rack to the bottom of the natural gas spray gun 220 for ignition and baking. After baking, move the baking rack and lift the molten steel ladle 500 above the water atomization device to atomize the molten steel. The degree of automation is not high, and the operation risk is relatively high, requiring manual and careful operation. At the same time, in the process of lifting the molten steel ladle 500 onto the water atomization device after baking, it takes a long time because the baking rack needs to be moved to the lifting station and then lifted. This may cause the molten steel ladle 500 to cool down, and then cause a blockage accident. In order to solve the above technical problems, the present embodiment provides a rotary molten steel ladle 500 baking system, which can effectively improve the baking efficiency and baking effect, reduce the transportation process, and reduce the operation risk. The following is combined with the attached Figures 1 to 3 The rotary steel ladle 500 baking system of this embodiment is described in detail.

[0038] The rotary steel ladle baking system of the embodiment of the utility model comprises a rotating table 100, a heating component 200, a first lifting structure 300 and a second lifting structure 400. The rotating table 100 is used to place the steel ladle 500. The heating component 200 is arranged above the rotating table 100. The heating component 200 is used to heat the steel ladle 500 on the rotating table 100. The first lifting structure 300 is used to take and place the steel ladle 500 on the placement table 110. The second lifting structure 400 is used to drive the heating component 200 to rise and fall. A plurality of placement tables 110 for placing molten steel ladles 500 are arranged on the rotating table 100. A rotating structure is provided at the center position of the rotating table 100 to drive the rotating table 100 to rotate. The rotation of the rotating table 100 can drive the plurality of placement tables 110 to exchange positions. The first lifting structure 300 can take and place the molten steel ladles 500 located on the placement tables 110. The second lifting structure 400 is used to drive the heating component 200 to extend into at least one molten steel ladles 500 located on the placement tables 110.

[0039] Further, see Figure 1 As shown, the multiple placement platforms 110 refer to two or more. Generally speaking, since the baking of the molten steel ladle 500 itself takes a long time, two placement platforms 110 can be set on the rotating table 100, one of the placement platforms 110 is located below the first lifting structure 300, and the other placement platform 110 is located below the second lifting structure 400.

[0040] It is conceivable that if there are multiple atomization devices, four, six, etc. placement tables 110 can be set on the rotating table 100. Taking the setting of four placement tables 110 as an example, if four placement tables 110 are set on the rotating table 100, it should be equipped with two first lifting structures 300 and two second lifting structures 400, and two heating components 200 are respectively connected to the two second lifting structures 400. The two heating components 200 can heat the two molten steel ladles 500 respectively. By placing the molten steel leaking ladle 500 on the rotating table 100 and arranging multiple placement tables 110 on the rotating table 100, the molten steel leaking ladle 500 can be replaced by exchanging the positions of the placement tables 110 without manual handling, and the continuous operation of the heating component 200 can be achieved, thereby improving the efficiency of replacing the molten steel leaking ladle 500 and achieving continuous operation of the heating component 200; a first lifting structure 300 and a second lifting structure 400 are provided, which can realize the automated movement of the heating component 200 and the molten steel leaking ladle 500, reduce manual work, and reduce operational risks.

[0041] In an embodiment of the utility model, the heating component 200 has an initial position and a heating position; the molten steel ladle 500 has a heating chamber 510 with an opening at the top, and the heating component 200 includes a cover plate 210 and a spray gun 220, and the area of ​​the cover plate 210 is not less than the opening area at the top of the heating chamber 510; the heating component 200 is in the heating position, and the spray gun 220 extends into the heating chamber 510 of the molten steel ladle 500 located on the placement table 110, and the cover plate 210 is located above the molten steel ladle 500, and there is a distance between the cover plate 210 and the top of the molten steel ladle 500; the heating component 200 in the initial position is located as a whole above the molten steel ladle 500, so as to avoid obstruction when the molten steel ladle 500 switches its position. The heating assembly 200 includes a cover plate 210, and the area of ​​the cover plate 210 is larger than the opening area of ​​the heater top of the molten steel ladle 500. When the spray gun 220 heats the inside of the molten steel ladle 500, it can effectively reduce heat loss, thereby improving the baking efficiency.

[0042] In the embodiment of the present utility model, the heating assembly 200 further includes a temperature measuring device 230, and the temperature measuring device 230 is installed on the cover plate 210. Specifically, in this embodiment, the air intake flow rate of the spray gun 220 is adjustable. Figure 2 As shown, the temperature measuring device 230 can be a temperature measuring thermocouple or other equipment. The temperature measuring thermocouple is set to facilitate real-time detection of the temperature in the heating chamber 510, and then adjust the air intake flow of the spray gun 220 accordingly according to the temperature range, so as to achieve the adjustment of the flame size of the spray gun 220. At present, most of the molten steel leakage ladle 500 still predicts the temperature inside the molten steel leakage ladle 500 by manual judgment, which has the problem of poor accuracy. The use of the temperature measuring device 230 can better control the molten steel leakage ladle 500 to heat up according to the set heating and heating curve, thereby improving the baking quality of the molten steel leakage ladle 500. The temperature measuring device 230 should be tested before use. If the measurement data of the temperature measuring device 230 is found to be inaccurate during the test, it must be replaced.

[0043] It is conceivable that the air intake flow rate of the spray gun 220 is adjusted according to the temperature measuring device 230 by manual adjustment or automatic adjustment by designing a corresponding program.

[0044] In the embodiment of the present invention, a plurality of spray guns 220 are provided, and the plurality of spray guns 220 are evenly spaced around the outer circumference of the temperature measuring device 230. Figure 2 As shown, in this embodiment, two spray guns 220 are provided, and the two spray guns 220 are symmetrically arranged about the temperature measuring device 230. The temperature measuring device 230 is arranged at the center of the cover plate 210, and multiple spray guns 220 are evenly spaced around the periphery of the temperature measuring device 230 to achieve more uniform heating of the molten steel ladle 500. At the same time, the temperature measuring device 230 is arranged at the center of multiple spray guns 220 to more accurately measure the temperature in the heating chamber 510.

[0045] It can be imagined that the number of spray guns 220 can be increased or decreased accordingly according to the size of the molten steel ladle 500 . Generally, a smaller molten steel ladle 500 is provided with 2 to 4 spray guns 220 .

[0046] In the embodiment of the present invention, the spray gun 220 is disposed through the cover plate 210, and the spray gun 220 can be raised and lowered relative to the cover plate 210. Figure 2 As shown, a telescopic device is installed on the second lifting structure 400, and the spray gun 220 is connected to the movable end of the telescopic device. The spray gun 220 can be lifted relative to the cover plate 210 to facilitate the use of molten steel ladle 500 of different sizes; for example, the heating chamber 510 of some molten steel ladle 500 is relatively deep, so when the heating component 200 is in the heating position, the spray gun 220 needs to be lowered more accordingly; the heating chamber 510 of some molten steel ladle 500 is relatively shallow, so when the heating component 200 is in the heating position, the spray gun 220 needs to be raised more accordingly.

[0047] It is conceivable that if the molten steel ladle 500 is of the same size, the spray gun 220 and the cover plate 210 can be fixedly connected in actual production, thereby eliminating the corresponding telescopic device and reducing equipment costs.

[0048] In the embodiment of the present invention, the cover plate 210 is provided with a ring edge 211 extending downward. Specifically, the top surface of the molten steel ladle 500 is circular, and the cover plate 210 is also circular. Figure 2 As shown, the area of ​​the cover plate 210 should be larger than the area of ​​the top of the molten steel ladle 500. At the same time, when the heating assembly 200 is in the heating position, the lower surface of the ring edge 211 is flush with the upper surface of the molten steel ladle 500, or the lower surface of the ring edge 211 is lower than the upper surface of the molten steel ladle 500. This design will make the heat in the heating chamber 510 pass through a longer path when it is dissipated, so it can have a better insulation effect on the heating chamber 510 and reduce the heat loss in the heating chamber 510. The ring edge 211 is made of heat-resistant and heat-insulating material, or a layer of heat-resistant and heat-insulating material is pasted on the inner side of the ring edge 211, which can effectively reduce the loss of heat.

[0049] In an embodiment of the utility model, when the heating component 200 is in the heating position, there is a distance between the cover plate 210 and the top of the molten steel leaking ladle 500, which can prevent the heating chamber 510 from forming an enclosed space. When the enclosed heating chamber 510 is heated by the spray gun 220, the temperature and pressure of the enclosed heating chamber 510 will rise rapidly, which may cause damage to the heating component 200 or the molten steel leaking ladle 500 or an explosion accident. Therefore, when the heating component 200 is in the heating position, there is a distance between the cover plate 210 and the top of the molten steel leaking ladle 500, which can reduce heat loss and improve safety.

[0050] In the embodiment of the present invention, the heating assembly 200 in the heating position, the distance between the cover plate 210 and the top of the molten steel ladle 500 is 2 cm to 3 cm. Figure 2 The spacing D shown should reduce the heat loss of the heating chamber 510 without causing the problem of rapid pressure increase in the heating chamber 510. Therefore, based on practical experience and multiple tests, it is preferred that D = 2cm~3cm to achieve the best technical effect.

[0051] In the embodiment of the present utility model, a heat insulation structure 120 is installed on the top of the placement table 110. Figure 3 As shown, a placement groove 111 is provided on the top of the placement table 110 for partially embedding the molten steel ladle 500, and the heat insulation structure 120 is installed in the placement groove 111; the size of the placement groove 111 is substantially the same as the size of the bottom of the molten steel, and the heat insulation structure 120 is detachably installed in the placement groove 111, so that the heat insulation structure 120 is easy to replace and the maintenance cost is reduced. The heat insulation structure 120 can prevent the high temperature of the molten steel ladle 500 from damaging the rotating table, thereby affecting the positioning of the rotating table.

[0052] The working process of the rotary steel ladle baking system of the utility model embodiment is as follows:

[0053] 1. The first lifting structure 300 lifts the molten steel ladle 500 to be baked onto the placement platform 110 of the rotating platform 100;

[0054] 2. The rotating table 100 rotates, driving the molten steel ladle 500 to be baked to rotate to the bottom of the second lifting structure 400;

[0055] 3. The second lifting structure 400 drives the heating assembly 200 to descend to the heating position. When the heating assembly 200 is in the heating position, the distance between the cover plate 210 and the top of the molten steel ladle 500 is 2 cm to 3 cm. The spray gun 220 extends into the heating chamber 510 to heat the interior of the molten steel ladle 500.

[0056] 4. During the baking process, when the temperature measured by the temperature measuring device 230 reaches the set temperature of the molten steel ladle 500, the spray gun 220 can be closed or the gas volume of the spray gun 220 can be reduced according to the actual situation, so that the molten steel ladle 500 enters the insulation mode;

[0057] 5. After the molten steel ladle 500 is kept warm for a set time, the air intake of the spray gun 220 is closed, and the second lifting structure 400 drives the heating assembly 200 to rise to the initial position;

[0058] 6. Repeat steps 1 to 5; wherein, in step 2, when the rotating table 100 rotates the molten steel ladle 500 to be baked to the bottom of the second lifting structure 400, the molten steel ladle 500 that has been baked will be rotated to the bottom of the first lifting structure 300, so that the first lifting structure 300 can lift the baked molten steel ladle 500 onto the atomization device.

[0059] Compared with the existing baking equipment, the rotary steel ladle baking system provided in the present embodiment does not need to move the steel ladle 500 back and forth, and the switching of the steel ladle 500 is achieved by rotating the rotating table 100, thereby avoiding the cooling of the steel ladle 500 during the transfer process, effectively improving the baking efficiency and baking effect, reducing the transfer process, reducing the operation risk, and reducing the probability of ladle blocking accidents.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0061] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A rotary steel ladle baking system, characterized in that: include: A rotating table (100) has a plurality of placement tables (110) for placing molten steel ladles (500), and the rotation of the rotating table (100) can drive the plurality of placement tables (110) to exchange positions; A heating component (200) is movably lifted and arranged above the rotating platform (100), and the heating component (200) has an initial position and a heating position; the molten steel ladle (500) has a heating chamber (510) with an opening at the top, and the heating component (200) comprises a cover plate (210) and a spray gun (220), and the area of ​​the cover plate (210) is not less than the opening area at the top of the heating chamber (510); when the heating component (200) is in the heating position, the spray gun (220) extends into the heating chamber (510) of the molten steel ladle (500) located on the placement platform (110); A first lifting structure (300) is used for taking and placing the molten steel ladle (500) on the placement platform (110); The second lifting structure (400) is used to drive the heating component (200) to move up and down.

2. The rotary steel ladle baking system according to claim 1 is characterized in that: The heating component (200) further comprises a temperature measuring device (230), wherein the temperature measuring device (230) is mounted on the cover plate (210).

3. The rotary steel ladle baking system according to claim 2 is characterized in that: A plurality of the spray guns (220) are provided, and the plurality of the spray guns (220) are evenly spaced around the periphery of the temperature measuring device (230).

4. The rotary steel ladle baking system according to claim 1, characterized in that: The spray gun (220) is disposed through the cover plate (210), and the spray gun (220) can be raised and lowered relative to the cover plate (210).

5. The rotary steel ladle baking system according to claim 1 is characterized in that: The air intake flow rate of the spray gun (220) is adjustable.

6. The rotary steel ladle baking system according to claim 1, characterized in that: The cover plate (210) is provided with a ring edge (211) extending downward on its circumference.

7. The rotary steel ladle baking system according to claim 1, characterized in that: When the heating assembly (200) is in the heating position, there is a distance between the cover plate (210) and the top of the molten steel ladle (500).

8. The rotary steel ladle baking system according to claim 7, characterized in that: When the heating assembly (200) is in the heating position, the distance between the cover plate (210) and the top of the molten steel ladle (500) is 2 cm to 3 cm.

9. The rotary steel ladle baking system according to claim 1, characterized in that: A heat insulation structure (120) is installed on the top of the placement platform (110).

10. The rotary steel ladle baking system according to claim 9, characterized in that: A placement groove (111) is provided on the top of the placement platform (110) for partially embedding the molten steel ladle (500), and the heat insulation structure (120) is installed in the placement groove (111).

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