Molten iron tank accident emergency device

Abstract

The utility model discloses a molten iron tank accident emergency device which comprises a tipping support pillar, a dust removal mechanism, a molten iron chute, a hoisting mechanism and a casting mechanism, the hoisting mechanism is located above the tipping support pillar to enable a molten iron tank to be close to the tipping support pillar to be dumped, and the tipping support pillar is used for supporting the dumped molten iron tank. The molten iron chute is located on one side of the tipping supporting pillar to receive poured molten iron, the casting mechanism is located on the outlet side of the molten iron chute to receive the molten iron, and the dust removal mechanism is located above the molten iron chute to remove smoke generated during casting. The accident emergency device for the hot-metal ladle can safely and effectively solve the problem of iron leakage of the hot-metal ladle car with low consumption, has obvious effects on solving the potential hazard of an iron-making production accident and greatly reducing the damage caused by the iron leakage accident of the hot-metal ladle, and does not cause damage and pollution to the surrounding environment at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of emergency in the metallurgical industry, and particularly relates to an emergency device for molten iron ladle accidents. Background Technique

[0002] The molten iron ladle is a device for collecting and transporting the molten iron, a product of ironmaking, and is widely used in blast furnaces, submerged arc furnaces, etc. The molten iron ladle is straight cylindrical, with its outer shell welded by steel plates, lined with fireclay bricks inside, supported on the vehicle frame by a cast steel trunnion on each side, and there is a hook pin shaft at the bottom of the ladle, and the molten iron ladle can be lifted by a crane to tilt the molten iron. During the use and turnover process of the molten iron ladle, it should be properly managed and maintained, and the coagulated slag and iron should be turned out and removed in time, which can improve the loading capacity and turnover rate and reduce heat loss. During the operation in front of the furnace, the ladle position should be aligned, the iron flow rate should be controlled well, and the slag and iron should be separated as well as possible to prevent the furnace slag from entering the ladle. When lifting and tilting the molten iron ladle with a crane hook, special attention should be paid to safety.

[0003] During the current production process, the molten iron ladle sometimes leaks molten iron, posing a great safety hazard; at the same time, it will also damage the surrounding railway and other facilities, affecting normal production.

[0004] There are many reasons for the accidents of overfull molten iron in the molten iron ladle and overflow of molten iron. Taking the blast furnace ironmaking process as an example, the reasons are roughly as follows:

[0005] 1) The small trench worker derelicted his duty and failed to watch the molten iron ladle well, and it was not clear when it was full.

[0006] 2) The baffle failed and was not corrected on time, and the molten iron could not be diverted.

[0007] 3) The small sand dam was made too low, and some molten iron still entered the original molten iron ladle after the molten iron was diverted.

[0008] 4) After the ladle was full, the taphole could not be blocked, and the molten iron overflowed from the ladle, forming an accident.

[0009] The overfull molten iron in the molten iron ladle and the overflow of molten iron have a great impact on the workshop, such as:

[0010] 1) The molten iron overflows from the molten iron ladle and flows onto the railway. When it meets moisture, it explodes, melts the railway track, the molten iron ladle cannot operate, and the blast furnace is forced to stop blowing.

[0011] 2) When it is wet or there is accumulated water under the molten iron ladle position, it will cause an explosion, threatening the safety of workers.

[0012] 3) It may burn out the railway track, resulting in the inability to pull the ladle, the blast furnace is forced to stop blowing, causing production interruption, and even burning out the molten iron ladle, forming a major accident.

[0013] Currently, the preventive measures for overfull molten iron in the molten iron ladle and overflow of molten iron are as follows:

[0014] 1) The height of the small sand dam is made to meet the standard to ensure that it will not be washed away by the molten iron.

[0015] 2) The quality of the baffle is made to meet the standard for easy replacement.

[0016] 3) Strengthen the sense of responsibility of the small trench workers. When the molten iron in the ladle reaches 300 mm from the ladle edge, if the flow rate of the molten iron is too high, the baffle should be pulled up in advance.

[0017] 4) Keep the accident pit under the ladle position dry, free of accumulated water, snow, sundries, etc., and check it every shift.

[0018] 5) Strengthen the maintenance of the taphole and the clay gun. When necessary, plug the hole in time to prevent accidents.

[0019] When the ladle car leaks molten iron, it is necessary to stop immediately for treatment to avoid harm and pollution to the surrounding environment. The measures that can be taken are:

[0020] 1) Seal the leaking position with insulating tape or other materials to prevent the continuous leakage of molten iron. This operation has high requirements for the skills of the operators and the plugging materials, with great danger and unobvious effect, so it is generally not the first choice.

[0021] 2) Take preventive measures, quickly dispose of the molten iron in the ladle, and then repair the ladle. This operation is relatively easy to implement and has obvious effect, so it is generally the first choice measure, but a suitable emergency position for ladle accidents needs to be selected. Therefore, it is necessary to design a set of safe, effective and low-consumption emergency devices for ladle accidents for supporting use. Utility Model Content

[0022] The main purpose of the present utility model is to provide an emergency device for ladle accidents, aiming to facilitate the treatment of the excess molten iron inside the ladle when the molten iron is overfilled.

[0023] To achieve the above object, the present utility model provides an emergency device for ladle accidents, including a tilting support pillar, a dust removal mechanism, a molten iron chute, a hoisting mechanism and a casting mechanism. Among them,

[0024] The hoisting mechanism is located above the tilting support pillar to tilt the ladle close to the tilting support pillar. The tilting support pillar is used to support the ladle during tilting. The molten iron chute is located on one side of the tilting support pillar to receive the molten iron after tilting. The casting mechanism is located on the outlet side of the molten iron chute to receive the molten iron. The dust removal mechanism is located above the molten iron chute to remove the flue gas generated during casting.

[0025] Preferably, the dust removal mechanism includes a dust removal hood located directly above the molten iron chute and a dust removal flue connected thereto. A dust removal cut-off valve is installed on the dust removal flue.

[0026] Preferably, the dust removal flue is further connected with a suction mechanism.

[0027] Preferably, the pitching angle of the dust removal hood is adjustable.

[0028] Preferably, a support shaft adapted to the ladle lifting lug is convexly provided on the side surface of the tipping support strut.

[0029] Preferably, a support base is provided below the molten iron chute.

[0030] Preferably, the casting mechanism includes an accident emergency pit and a casting groove installed inside the accident emergency pit. The trough body of the casting groove is cast with heat-resistant concrete, and the trough body of the casting groove forms a groove structure to hold molten iron.

[0031] Preferably, the pit body of the accident emergency pit includes an outer shell and a clay refractory brick layer on the inner layer. The outer layer is cast with heat-resistant concrete.

[0032] Preferably, slag or dry sand is laid at the bottom of the pit body of the accident emergency pit.

[0033] Preferably, the molten iron ladle accident emergency device further includes a protective fence surrounding the outer sides of the tipping support strut, the molten iron chute and the casting mechanism.

[0034] The molten iron ladle accident emergency device proposed by the present utility model can safely, effectively and low-consumedly solve the problem of molten iron leakage from the molten iron ladle car, and has a significant effect on solving the potential hazards of ironmaking production accidents and greatly reducing the damage caused by molten iron ladle leakage accidents. At the same time, it will not cause harm and pollution to the surrounding environment. In addition, the molten iron ladle accident emergency device of the present invention also has the advantages of simple structure, stable and reliable operation, low manufacturing cost and easy implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a top view structural schematic diagram of the molten iron ladle accident emergency device of the present utility model;

[0036] Figure 2 is Figure 1 a structural schematic diagram in the direction of A-A shown in.

[0037] In the figure, 1 - accident molten iron ladle; 2 - tipping support strut; 3 - dust removal hood; 4 - molten iron chute; 5 - accident emergency pit; 6 - casting groove; 7 - dust removal flue; 8 - dust removal cut-off valve; 9 - hoisting mechanism.

[0038] The realization, functional characteristics and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0040] It should be noted that in the description of the present utility model, the orientation or positional relationship indicated by the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0041] Referring to Figure 1 and Figure 2 , in this preferred embodiment, an emergency device for a hot metal ladle includes a tipping support pillar 2, a dust removal mechanism, a hot metal chute 4, a hoisting mechanism 9 (which can be a foundry crane), and a casting mechanism. Among them,

[0042] The hoisting mechanism 9 is located above the tipping support pillar 2 to tilt the hot metal ladle close to the tipping support pillar 2. The tipping support pillar 2 is used to support the hot metal ladle during tipping. The hot metal chute 4 is located on one side of the tipping support pillar 2 to receive the hot metal after tipping. The casting mechanism is located on the outlet side of the hot metal chute 4 to receive the hot metal. The dust removal mechanism is located above the hot metal chute 4 to remove the flue gas generated during casting.

[0043] Specifically, in this embodiment, a specific structure of the dust removal mechanism is proposed here: The dust removal mechanism includes a dust removal hood 3 located directly above the hot metal chute 4 and a dust removal flue 7 communicating with it. A dust removal cut-off valve 8 is installed on the dust removal flue 7.

[0044] Furthermore, the dust removal flue 7 is also connected to a suction mechanism (not shown in the figure). The suction mechanism can include an axial flow fan, etc., so as to improve the dust removal efficiency.

[0045] In this embodiment, the pitching angle of the dust removal hood 3 can be adjusted, so as to facilitate flexibly adjusting the pitching angle of the dust removal hood 3 according to the casting angle to improve the dust suction efficiency.

[0046] In this embodiment, a support shaft for fitting with the hot metal ladle lifting lugs is convexly provided on the side surface of the tipping support pillar 2. The number of support shafts is equal to the number of hot metal ladle lifting lugs. A household-shaped groove is formed on the top surface of the tipping support pillar 2 to support the side surface of the hot metal ladle.

[0047] Specifically, referring to Figure 2 , a support base is provided below the hot metal chute 4.

[0048] This embodiment hereby presents a specific structure of a casting mechanism: The casting mechanism includes an accident emergency pit 5 and a casting trough 6 installed inside the accident emergency pit 5. The trough body of the casting trough 6 is cast with heat-resistant concrete, and the trough body of the casting trough 6 forms a groove structure to accommodate molten iron.

[0049] Specifically, the pit body of the accident emergency pit 5 includes an outer shell and a clay refractory brick layer in the inner layer. The outer layer is cast with heat-resistant concrete. In addition, slag or dry sand is laid at the bottom of the pit body of the accident emergency pit 5. With the accident emergency pit 5 having this structure, its heat resistance performance is improved.

[0050] Furthermore, this molten iron ladle accident emergency device further includes a protective fence surrounding the outer sides of the tipping support pillar 2, the molten iron chute 4, and the casting mechanism.

[0051] The molten iron ladle accident emergency device is set in the middle of the ironmaking and steelmaking workshops. Taking the blast furnace ironmaking process as an example, it is recommended to be installed in the casting machine workshop.

[0052] The working process of this molten iron ladle accident emergency device is as follows: When the accident molten iron ladle 1 is transported to the emergency device, through Figure 1 the hoisting mechanism 9 therein, the accident molten iron ladle 1 is lifted, the ladle tipping hook is hooked on the tipping support pillar, and then the molten iron ladle is tipped by the auxiliary hook of the hoisting mechanism 9, and the molten iron in the ladle is poured into the casting trough 6 through the molten iron chute 4; During casting, the dust removal mechanism needs to be used to remove the large flue gas generated during casting.

[0053] After the molten iron in the molten iron ladle is completely cast, it can be hoisted to the molten iron ladle repair area for repair; After the molten iron in the accident trough condenses, it can be hoisted to the flame cutting area, and the iron blocks are processed and used as steelmaking raw materials to return to the furnace.

[0054] The molten iron ladle accident emergency device proposed in this embodiment, because the tipping support pillar 2 is set to facilitate the support of the tipping of the molten iron ladle, cooperate with the hoisting mechanism 9 to tip the molten iron ladle, and timely pour out the excess molten iron inside the molten iron ladle, so as to be able to safely, effectively, and with low consumption solve the problem of molten iron leakage from the molten iron ladle car, and has a remarkable effect on solving the potential hazards of ironmaking production accidents and greatly reducing the damage caused by molten iron ladle leakage accidents, and at the same time will not cause harm and pollution to the surrounding environment. In addition, this molten iron ladle accident emergency device also has the advantages of simple structure, stable and reliable operation, low manufacturing cost, and easy implementation.

[0055] The above is only the preferred embodiment of the present utility model, and it does not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. An emergency device for molten iron tank accidents, characterized in that: It includes a tilting support pillar, a dust removal mechanism, a molten iron chute, a hoisting mechanism and a casting mechanism, among which: The lifting mechanism is located above the tilting support pillar to tilt the molten iron ladle close to the tilting support pillar. The tilting support pillar is used to support the molten iron ladle during tilting. The molten iron chute is located on one side of the tilting support pillar to receive the molten iron after tilting. The casting mechanism is located on the outlet side of the molten iron chute to receive the molten iron. The dust removal mechanism is located above the molten iron chute to remove the smoke generated during casting.

2. The emergency device for molten iron ladle accidents according to claim 1, characterized in that: The dust removal mechanism comprises a dust removal hood located just above the molten iron chute and a dust removal flue connected thereto, and a dust removal cut-off valve is installed on the dust removal flue.

3. The emergency device for molten iron ladle accidents as claimed in claim 2, characterized in that: The dust removal flue is also connected with a suction mechanism.

4. The emergency device for molten iron ladle accidents as claimed in claim 2, characterized in that: The pitch angle of the dust removal cover is adjustable.

5. The emergency device for molten iron ladle accidents according to claim 1, characterized in that: A support shaft adapted to the lifting lug of the molten iron ladle is convexly provided on the side surface of the tilting support pillar.

6. The emergency device for molten iron ladle accidents according to claim 1, characterized in that: A supporting base is arranged below the molten iron chute.

7. The emergency device for molten iron ladle accidents according to claim 1, characterized in that: The casting mechanism comprises an accident emergency pit and a casting trough installed inside the accident emergency pit. The trough body of the casting trough is cast with heat-resistant concrete, and the trough body of the casting trough forms a groove structure to accommodate molten iron.

8. The emergency device for molten iron ladle accidents as claimed in claim 7, characterized in that: The pit body of the accident emergency pit includes an outer shell located at the outer layer and a clay refractory brick layer located at the inner layer, and the outer layer is cast by heat-resistant concrete.

9. The emergency device for molten iron ladle accidents according to claim 7, characterized in that: The bottom of the accident emergency pit is paved with slag or dry sand.

10. The emergency device for molten iron ladle accidents according to any one of claims 1 to 9, characterized in that: It also includes protective fences arranged around the outer sides of the tipping support pillars, the molten iron chute and the casting mechanism.

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