Blast furnace slag treatment system

Abstract

The utility model discloses a blast furnace slag treatment system, which relates to the relevant technical field of metallurgy, and comprises a first filter tank and a second filter tank which are arranged next to each other, the water slag runner can move, so that the water slag runner is provided with a first position and a second position, and the water slag runner is provided with an outlet; when the slag flushing trough and the water slag trough move between the first position and the second position, slag flushing water discharged from the outlet of the slag flushing trough can always flow into the water slag trough; when the water slag runner is at the first position, the outlet of the water slag runner corresponds to the first filter tank, so that slag flushing water in the water slag runner can flow into the first filter tank; when the water slag runner is at the second position, the outlet of the water slag runner corresponds to the second filter tank, so that slag flushing water in the water slag runner can flow into the second filter tank. The slag sluice valve can solve the problem that the slag sluice valve is prone to being eroded and abraded, so that maintenance needs to be conducted frequently or parts need to be replaced frequently.

Description

Technical Field

[0001] The utility model relates to the technical field related to metallurgy, and in particular to a blast furnace slag processing system. Background Art

[0002] The blast furnace slag is granulated and flushed into molten slag in front of the furnace. The molten slag enters the filter tank through the slag flushing ditch in front of the furnace. The slag flushing water is recycled after being filtered in the filter tank. The molten slag is grabbed by a bridge grab crane and directly loaded onto trucks for transportation.

[0003] In order to facilitate the grabbing operation of the grab crane, the filter pool is divided into several independent filter pools by partition walls in the middle, which requires that the water slag can enter different filter pools at the end of the slag flushing ditch. The slag flushing ditch valve is usually used to control the flow direction of the water slag, and the valve switch is used to select different slag flushing pools. When the valve is opened, the slag flushing water will flow into the corresponding filter pool. After working for a period of time, when a certain amount of water slag accumulates in the sub-filter pool and needs to be grabbed, or when the sub-filter pool needs to be repaired, the valve is closed to prevent the slag flushing water from flowing into the sub-filter pool. The number of filter pools is basically designed to be two. In actual production, after a period of production in the sub-filter pool, the filter material will form a hardened layer, which causes the filter pool to run unsmoothly and requires regular maintenance. The hardened layer is hard, difficult to clean, and time-consuming, so more and more factories choose three or more filter pools. Utility Model Content

[0004] The applicant found that the slag flushing ditch valve is frequently opened and closed in daily production, and is subject to friction and impact from the slag flushing water when closed, resulting in severe wear. After a period of production, the valve plate will deform due to impact, resulting in seal failure. Secondly, the rotating shaft that controls the opening and closing is also prone to failure, and needs to be frequently replaced in actual production to ensure its normal operation, which not only increases maintenance costs, but also affects the normal operation of the blast furnace.

[0005] In addition, the sealing of the valve is also a very important technical indicator. Since the slag in the slag-water mixture has a large proportion and mainly flows in the lower layer, when the valve is opened, the baffle at the lower outlet of the valve and the refractory material of the protective steel plate will be washed and worn by the slag after a period of production, resulting in water leakage. This position is difficult to repair and replace after damage, and the rest of the valve parts can be used normally, so they are generally not replaced as a whole, otherwise the cost is too high. This will lead to the following problems: when the staff enters the filter pool for maintenance, if the valve is not sealed tightly, the slag flushing water will leak into the filter pool and scald the staff, causing safety hazards.

[0006] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiment of the utility model is to provide a blast furnace slag processing system, which can solve the problem that the slag ditch valve is easily eroded and worn, resulting in frequent need for maintenance or frequent replacement of components and parts.

[0007] The specific technical solution of the embodiment of the utility model is:

[0008] A blast furnace slag treatment system, the blast furnace slag treatment system comprising:

[0009] a first filter tank and a second filter tank;

[0010] A slag ditch, the slag ditch can be moved to have a first position and a second position, and the slag ditch has an outlet;

[0011] A slag flushing ditch, when the slag ditch moves between the first position and the second position, the slag flushing water discharged from the outlet of the slag flushing ditch can always flow into the slag ditch; when the slag ditch is in the first position, the outlet of the slag ditch corresponds to the first filter tank, so that the slag flushing water in the slag ditch can flow into the first filter tank; when the slag ditch is in the second position, the outlet of the slag ditch corresponds to the second filter tank, so that the slag flushing water in the slag ditch can flow into the second filter tank.

[0012] Preferably, the first filter pool and the second filter pool are arranged along a first preset direction;

[0013] The slag groove extends along the first preset direction;

[0014] The orientation of the outlet of the slag flushing groove is the same as the first preset direction.

[0015] Preferably, the blast furnace slag treatment system comprises:

[0016] a track extending along the first preset direction;

[0017] The slag ditch comprises: a ditch shell with a accommodating cavity, the upper end of the ditch shell is open so that the accommodating cavity can receive the slag flushing water discharged from the outlet of the slag flushing ditch; the side wall of the ditch shell is provided with an outlet, and the outlet allows the slag flushing water in the accommodating cavity to flow out; a frame with rollers installed at the lower end of the ditch shell, and the rollers cooperate with the track.

[0018] Preferably, the inner side wall and the bottom wall of the trench shell are provided with replaceable lining plates.

[0019] Preferably, the outlet of the groove shell is a nozzle-type structure, and the inner side wall and the bottom wall of the nozzle-type structure are provided with replaceable lining plates.

[0020] Preferably, the lining plate is a wear-resistant lining plate.

[0021] Preferably, the inner side wall and the bottom wall of the groove shell are provided with a wear-resistant coating.

[0022] Preferably, the outlet of the groove shell is a nozzle-type structure, and the inner side wall and the bottom wall of the nozzle-type structure are provided with a wear-resistant coating.

[0023] Preferably, the thickness of the wear-resistant coating is greater than or equal to 100 mm.

[0024] Preferably, the slag ditch is driven and moved by one of the following methods: motor drive, winch drive, hydraulic push rod drive.

[0025] The technical solution of the utility model has the following significant beneficial effects:

[0026] Since the slag-washing water discharged from the outlet of the slag-washing ditch can always flow into the slag-washing ditch when the slag-washing ditch moves between the first position and the second position, when the slag-washing ditch is in the first position, the outlet of the slag-washing ditch corresponds to the first filter tank, and the slag-washing water discharged from the outlet of the slag-washing ditch can flow into the slag-washing ditch, and the slag-washing water flows into the first filter tank through the outlet of the slag-washing ditch; when the slag-washing water discharged from the outlet of the slag-washing ditch needs to be input into the second filter tank, the slag-washing ditch can be directly driven to move from the first position to the second position, during which the slag-washing water discharged from the outlet of the slag-washing ditch can always flow into the slag-washing ditch without leakage, and after the slag-washing ditch moves to the second position, the outlet of the slag-washing ditch corresponds to the second filter tank, and the slag-washing water discharged from the outlet of the slag-washing ditch can flow into the slag-washing ditch, and the slag-washing water flows into the second filter tank through the outlet of the slag-washing ditch. The slag-washing ditch can also be moved from the second position to the first position in the same way. Since the blast furnace slag treatment system in the present application does not use a valve to switch between the slag flushing ditch discharging to the first filter pool and the second filter pool, there is no sealing problem, and the problem of wear and tear of the slag flushing ditch valve caused by long-term use, which in turn causes the gate to be poorly sealed and leaking, can be fundamentally overcome. The blast furnace slag treatment system can further meet the layout of more filter pools and completely avoid the problem of poorly sealed valves and leaking.

[0027] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Features described and / or shown for one embodiment can be used in one or more other embodiments in the same or similar manner, combined with features in other embodiments, or replace features in other embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. Under the guidance of the present invention, those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances.

[0029] Figure 1 This is a schematic diagram of the structure of a blast furnace slag treatment system in an embodiment of the utility model;

[0030] Figure 2 This is a schematic diagram of the structure of the slag ditch and the track in the embodiment of the utility model;

[0031] Figure 3 It is a front view of the cooperation between the slag ditch and the track in the embodiment of the utility model;

[0032] Figure 4 It is a side view of the cooperation between the slag ditch and the track in the embodiment of the utility model.

[0033] Reference numerals in the above drawings:

[0034] 11. First filter tank; 12. Second filter tank; 13. Third filter tank; 2. Slag ditch; 21. Ditch shell; 22. Vehicle frame; 221. Roller; 23. Nozzle-type structure; 3. Slag flushing ditch; 4. First preset direction; 5. Track. DETAILED DESCRIPTION

[0035] In combination with the accompanying drawings and the description of the specific embodiments of the present invention, the details of the present invention can be more clearly understood. However, the specific embodiments of the present invention described herein are only used to explain the purpose of the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should be regarded as belonging to the scope of the present invention. It should be noted that when an element is referred to as "disposed on" another element, it can be directly on the other element or there can also be a central element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a central element at the same time. The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation method.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0037] In order to solve the problem that the valve of the slag flushing groove 3 is easily washed and worn, resulting in frequent maintenance or replacement of parts, a blast furnace slag treatment system is proposed in the embodiment of the present application. Figure 1 Schematic diagram of the structure of the blast furnace slag treatment system in the embodiment of the utility model. Figure 1 As shown, the blast furnace slag treatment system may include: a first filter tank 11 and a second filter tank 12; a water slag ditch 2; and a slag flushing ditch 3.

[0038] like Figure 1As shown, the slag ditch 2 is used to receive the slag flushing water discharged from the outlet of the slag flushing ditch 3. The slag ditch 2 has an outlet, through which the slag ditch 2 can discharge the received slag flushing water to the first filter tank 11 or the second filter tank 12. The slag ditch 2 can be moved so that it has at least a first position and a second position. When the slag ditch 2 is in the first position, the outlet of the slag ditch 2 corresponds to the first filter tank 11, so that the slag flushing water in the slag ditch 2 can flow into the first filter tank 11. When the slag ditch 2 is in the second position, the outlet of the slag ditch 2 corresponds to the second filter tank 12, so that the slag flushing water in the slag ditch 2 can flow into the second filter tank 12.

[0039] When the slag ditch 2 moves between the first position and the second position, the slag flushing water discharged from the outlet of the slag flushing ditch 3 can always flow into the slag ditch 2. In order to achieve the above purpose, the slag ditch 2 extends along the first preset direction 4. The orientation of the outlet of the slag flushing ditch 3 is the same as the first preset direction 4. The outlet of the slag flushing ditch 3 is located above the slag ditch 2. Through the above structure, the slag ditch 2 has a sufficient length in the first preset direction 4, so that when the slag ditch 2 moves between the first position and the second position, the slag flushing water discharged from the outlet of the slag flushing ditch 3 can always flow into the slag ditch 2.

[0040] In order to enable the slag flushing water in the slag ditch 2 to flow into the first filter tank 11 when the slag ditch 2 is in the first position, and to flow into the second filter tank 12 when the slag ditch 2 is in the second position, the first filter tank 11 and the second filter tank 12 can be arranged along the first preset direction 4, the slag ditch 2 can be located above and to the side of the first filter tank 11 and the second filter tank 12, and the outlet of the slag flushing ditch 3 is located on the side facing the first filter tank 11 and the second filter tank 12.

[0041] In order to enable the slag ditch 2 to move, Figure 2 This is a schematic diagram of the structure of the slag ditch and the track in the embodiment of the utility model. Figure 3 This is a front view of the slag ditch and the track in the embodiment of the utility model. Figure 4 FIG. 2 is a side view of the slag groove and the track in the embodiment of the utility model. Figures 2 to 4 As shown, the blast furnace slag treatment system may include: a track 5 extending along a first preset direction 4. The slag ditch 2 may include: a ditch shell 21 having a receiving cavity, the upper end of the ditch shell 21 is open, so that the receiving cavity can receive the slag flushing water discharged from the outlet of the slag flushing ditch 3; the ditch shell 21 has an outlet at the side wall, and the outlet allows the slag flushing water in the receiving cavity to flow out and flow into the first filter pool 11 or the second filter pool 12; a frame 22 with a roller 221 installed at the lower end of the ditch shell 21, and the roller 221 cooperates with the track 5.

[0042] like Figure 1As shown, the first filter tank 11 and the second filter tank 12 are arranged closely, so that when the slag ditch 2 moves between the first position and the second position, the slag flushing water discharged from the outlet of the slag ditch 2 can flow into the first filter tank 11 or the second filter tank 12 without leakage.

[0043] As feasible, the slag ditch 2 can be driven to move by one of the following ways: motor drive, winch drive, hydraulic push rod drive, etc. By driving in the above ways, the slag ditch 2 can be moved between the first position and the second position.

[0044] As a feasible method, the inner side wall and the bottom wall of the groove shell 21 are provided with replaceable lining plates, thereby greatly extending the service life of the equipment. Similarly, the outlet of the groove shell 21 can be a nozzle-type structure 23, the nozzle-type structure 23 is connected to the accommodating cavity of the groove shell 21, and the inner side wall and the bottom wall of the nozzle-type structure 23 are provided with replaceable lining plates. Furthermore, the lining plates can be wear-resistant lining plates.

[0045] In another embodiment, the inner side wall and bottom wall of the trench shell 21 may be provided with a wear-resistant coating, thereby significantly extending the service life of the equipment. Similarly, the inner side wall and bottom wall of the nozzle-shaped structure 23 may be provided with a wear-resistant coating. Furthermore, in order to prevent the trench shell 21 itself from being eroded and worn by the slag flow, the thickness of the wear-resistant coating may be greater than or equal to 100 mm.

[0046] As feasible, Figure 1 As shown, the blast furnace slag treatment system may include three filter pools or more than three filter pools. The filter pools are arranged closely in sequence. For example, when the blast furnace slag treatment system includes a third filter pool 13, the slag ditch 2 has a third position. When the slag ditch 2 moves between the first position, the second position and the third position, the slag flushing water discharged from the outlet of the slag flushing ditch 3 can always flow into the slag ditch 2. When the slag ditch 2 is in the third position, the outlet of the slag ditch 2 corresponds to the third filter pool 13, so that the slag flushing water in the slag ditch 2 can flow into the third filter pool 13. The first filter pool 11, the second filter pool 12 and the third filter pool 13 are arranged along the first preset direction 4. The slag ditch 2 has a sufficient length in the first preset direction 4, so that when the slag ditch 2 moves between the first position, the second position and the third position, the slag flushing water discharged from the outlet of the slag flushing ditch 3 can always flow into the slag ditch 2.

[0047] Since the slag flushing water discharged from the outlet of the slag flushing ditch 3 can always flow into the slag flushing ditch 2 when the slag flushing ditch 2 moves between the first position and the second position, therefore, when the slag flushing ditch 2 is in the first position, the outlet of the slag flushing ditch 2 corresponds to the first filter tank 11, and the slag flushing water discharged from the outlet of the slag flushing ditch 3 can flow into the slag flushing ditch 2, and the slag flushing water flows into the first filter tank 11 through the outlet of the slag flushing ditch 2; when the slag flushing water discharged from the outlet of the slag flushing ditch 3 needs to be input into the second filter tank 12, the slag flushing ditch 2 can be directly driven to move from the first position to the second position. During this period, the slag flushing water discharged from the outlet of the slag flushing ditch 3 can always flow into the slag flushing ditch 2 without leakage. After the slag flushing ditch 2 moves to the second position, the outlet of the slag flushing ditch 2 corresponds to the second filter tank 12, and the slag flushing water discharged from the outlet of the slag flushing ditch 3 can flow into the slag flushing ditch 2, and the slag flushing water flows into the second filter tank 12 through the outlet of the slag flushing ditch 2. The slag flushing ditch 3 can also be moved from the second position to the first position in the same manner. Since the blast furnace slag treatment system in the present application does not use a valve to switch the slag flushing ditch 3 between the first filter pool 11 and the second filter pool 12, there is no sealing problem, and the problem of wear and tear of the valve of the slag flushing ditch 3 caused by long-term use can be fundamentally overcome, thereby causing the gate to be poorly sealed and leaking. The blast furnace slag treatment system can further meet the layout of more filter pools and completely avoid the problem of poor valve sealing and leaking.

[0048] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for various purposes. The term "consisting essentially of ... " describing a combination should include determined elements, ingredients, parts or steps and other elements, ingredients, parts or steps that do not substantially affect the basic novel features of the combination. The use of the terms "comprising" or "including" to describe the combination of elements, ingredients, parts or steps here also contemplates the implementation method consisting essentially of these elements, ingredients, parts or steps. Here, by using the term "may", it is intended to illustrate that any attribute described that "may" includes is optional. Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The disclosure "one" or "one" used to describe an element, ingredient, part or step is not said to exclude other elements, ingredients, parts or steps.

[0049] The above are only several embodiments of the present invention. Although the embodiments disclosed by the present invention are as above, the above contents are only embodiments adopted for facilitating the understanding of the present invention and are not used to limit the present invention. Any technician in the technical field to which the present invention belongs can make any modification and change in the form and details of the embodiments without departing from the spirit and scope disclosed by the present invention, but the scope of patent protection of the present invention shall still be subject to the scope defined by the attached claims.

Claims

1. A blast furnace slag treatment system, characterized in that: The blast furnace slag treatment system comprises: A first filter tank and a second filter tank are arranged closely together; A slag ditch, the slag ditch can be moved to have a first position and a second position, and the slag ditch has an outlet; A slag flushing ditch, when the slag ditch moves between the first position and the second position, the slag flushing water discharged from the outlet of the slag flushing ditch can always flow into the slag ditch; when the slag ditch is in the first position, the outlet of the slag ditch corresponds to the first filter tank, so that the slag flushing water in the slag ditch can flow into the first filter tank; when the slag ditch is in the second position, the outlet of the slag ditch corresponds to the second filter tank, so that the slag flushing water in the slag ditch can flow into the second filter tank; Wherein, the first filter pool and the second filter pool are arranged along a first preset direction; the slag flushing ditch extends along the first preset direction; the outlet of the slag flushing ditch is oriented in the same direction as the first preset direction; The blast furnace slag processing system also includes: a track extending along the first preset direction; The slag ditch comprises: a ditch shell with a accommodating cavity, the upper end of the ditch shell is open so that the accommodating cavity can receive the slag flushing water discharged from the outlet of the slag flushing ditch; the side wall of the ditch shell is provided with an outlet, and the outlet allows the slag flushing water in the accommodating cavity to flow out; a frame with rollers installed at the lower end of the ditch shell, and the rollers cooperate with the track.

2. The blast furnace slag treatment system according to claim 1, characterized in that: The inner side wall and the bottom wall of the trench shell are provided with replaceable lining plates.

3. The blast furnace slag treatment system according to claim 1, characterized in that: The outlet of the groove shell is a nozzle-type structure, and the inner side wall and the bottom wall of the nozzle-type structure are provided with replaceable lining plates.

4. The blast furnace slag treatment system according to claim 2 or 3, characterized in that: The lining plate is a wear-resistant lining plate.

5. The blast furnace slag treatment system according to claim 1, characterized in that: The inner side wall and the bottom wall of the groove shell are provided with a wear-resistant coating.

6. The blast furnace slag treatment system according to claim 1, characterized in that: The outlet of the groove shell is a nozzle-type structure, and the inner side wall and the bottom wall of the nozzle-type structure are provided with a wear-resistant coating.

7. The blast furnace slag treatment system according to claim 5 or 6, characterized in that: The thickness of the wear-resistant coating is greater than or equal to 100 mm.

8. The blast furnace slag treatment system according to claim 1, characterized in that: The slag ditch is driven and moved by one of the following methods: motor drive, winch drive, and hydraulic push rod drive.

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