Blast furnace top charging bucket and using method

Abstract

The invention discloses a blast furnace top material tank and a using method, and relates to the technical field of blast furnace ironmaking, the blast furnace top material tank comprises a tank body, an anti-overflowing manhole and an anti-bridging manhole, the tank body comprises an upper conical section, a cylindrical section and a lower conical section, the upper conical section, the cylindrical section and the lower conical section are integrally connected, the top of the upper conical section is provided with a feeding port, and the bottom of the lower conical section is provided with a discharging port; the anti-overflow manhole is arranged at the bottom of the upper conical section and communicated with the interior of the upper conical section, the anti-overflow manhole can be opened or closed, and raw materials in the upper conical section can be discharged along the anti-overflow manhole when the anti-overflow manhole is opened; the anti-bridging manhole is formed in the bottom of the lower conical section and communicated with the interior of the lower conical section, the anti-bridging manhole can be opened or closed, the poking rod can enter the tank body along the anti-bridging manhole when the anti-bridging manhole is opened, an operator can damage the bridging structure in the lower conical section through the poking rod, the structure is simple, use is convenient, and the overhaul efficiency is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of blast furnace ironmaking, and in particular to a blast furnace top material tank and a use method thereof. Background Art

[0002] The furnace top material tank is the transfer station for all raw materials and fuels in the blast furnace. When the charge is loaded into the material tank, due to operational errors, the raw materials may exceed the volume of the material tank, resulting in the upper seal being unable to be closed and the pressure equalizing valve being unable to work, causing production to stop.

[0003] The space at the lower end of the blast furnace charge tank is in the shape of an inverted cone. During the feeding process, the raw materials come into contact with each other, causing friction, which will lead to material shelving and affect the production of the blast furnace.

[0004] If the phenomenon of loading and bubbling occurs, the blast furnace must reduce the airflow for 4-6 hours, and the workers will arrive at the material tank, open the upper seal, and carry out the material unloading work. If the phenomenon of shed material occurs, the blast furnace needs to be stopped for 24 hours. The workers open the material tank and destroy the structure of the shed material, which is time-consuming and laborious, and the work is also accompanied by the risk of falling. Summary of the invention

[0005] The purpose of the present invention is to provide a blast furnace top material tank and a use method to solve the problems existing in the above-mentioned prior art, with a simple structure, easy use and effectively improved maintenance efficiency.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention provides a blast furnace top material tank, comprising: a tank body, an anti-installation manhole and an anti-shed material manhole, the tank body comprises an upper cone section, a cylindrical section and a lower cone section, the upper cone section, the cylindrical section and the lower cone section are integrally connected, the top of the upper cone section is provided with a feed port, and the bottom of the lower cone section is provided with a discharge port; the anti-installation manhole is provided with the bottom of the upper cone section and is connected with the interior of the upper cone section, the anti-installation manhole can be opened or closed, and opening the anti-installation manhole can make the raw materials in the upper cone section leak out along the anti-installation manhole; the anti-shed material manhole is provided at the bottom of the lower cone section and is connected with the interior of the lower cone section, the anti-shed material manhole can be opened or closed, and opening the anti-shed material manhole can make a poking rod enter the tank body along the anti-shed material manhole, and make the operator destroy the shed material structure in the lower cone section through the poking rod.

[0008] Preferably, the anti-installation manhole is inclined downward, and the angle between the anti-installation manhole and the center line of the tank body is 55° to 65°.

[0009] Preferably, the diameter of the anti-manhole is 280 mm to 320 mm.

[0010] Preferably, the manhole for preventing shed materials is inclined downward, and the angle between the manhole for preventing shed materials and the center line of the tank body is 40° to 50°.

[0011] Preferably, the diameter of the anti-shed material manhole is 155mm to 165mm.

[0012] Preferably, it further comprises an inspection door, wherein the top of the upper cone section is provided with an inspection opening, and the inspection door is detachably fixedly connected to the inspection opening.

[0013] Preferably, it further comprises a plurality of hanging plates, each of which is evenly arranged along the circumference of the cylindrical section and fixedly connected to the cylindrical section.

[0014] Preferably, it also includes a reinforcement member, which is arranged on the outer side of the intersection of the cylindrical section and the lower cone section.

[0015] Preferably, it also includes a pressure equalization interface, which is arranged on the tank body and communicated with the interior of the tank body to adjust the air pressure in the tank body.

[0016] The present invention also provides a method for using a blast furnace top charging tank as described in any one of the above items, comprising the following steps:

[0017] When the tank is detected to be overflowing, the operator first prepares a suitable container and places it at the lower end of the anti-overburst manhole; the operator opens the anti-overburst manhole, and the raw materials exceeding the tank volume will naturally leak out through the anti-overburst manhole and flow into the container below;

[0018] After the raw materials leak into the tank without bubbling, close the anti-bubbling manhole, clean up the site, and check the tank and related equipment to ensure that they can operate normally before resuming production;

[0019] When the phenomenon of material shedding is found in the tank body, the operator opens the anti-material shedding manhole, and smoothly inserts the poking rod into the tank body along the anti-material shedding manhole. The poking rod is used to apply external force to the material shedding structure to destroy the stacking state of the material shedding, so that the raw materials can fall normally. The poking rod is continuously operated until the material shedding problem is completely solved, and then the anti-material shedding manhole is closed to check the material unloading situation in the tank to ensure that the blast furnace production returns to normal.

[0020] Compared with the prior art, the present invention has achieved the following technical effects:

[0021] The present invention provides a material tank on the top of a blast furnace and a use method thereof. For the phenomenon of loading and bubbling, workers do not need to carry out the traditional complicated material digging work. They only need to place a containing container at the lower end of a manhole to prevent loading and bubbling and then open the manhole, and the raw materials can be quickly discharged, which greatly improves the maintenance efficiency and reduces the production downtime caused by loading and bubbling. For the phenomenon of shed material, workers can open the manhole to prevent shed material and then use a material poking rod to deal with it. Compared with the traditional method of opening the material tank to destroy the shed material structure, it is faster and more efficient, shortens the time for dealing with the shed material problem, and thus improves the overall production efficiency of the blast furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of a blast furnace top material tank provided by the present invention;

[0024] In the figure: 1. Tank body; 2. Manhole for preventing installation; 3. Manhole for preventing shed materials; 4. Inspection door; 5. Lifting plate; 6. Reinforcement; 7. Pressure-equalizing interface. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] The purpose of the present invention is to provide a blast furnace top material tank and a use method to solve the problems existing in the above-mentioned prior art, with a simple structure, easy use and effectively improved maintenance efficiency.

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Embodiment 1

[0029] This embodiment provides a blast furnace top material tank, such as Figure 1As shown, it includes: a tank body 1, an anti-loading and emitting manhole 2 and an anti-shed material manhole 3, the tank body 1 includes an upper cone section, a cylindrical section and a lower cone section, the upper cone section, the cylindrical section and the lower cone section are connected as a whole, a feed port is arranged at the top of the upper cone section, and a discharge port is arranged at the bottom of the lower cone section; the anti-loading and emitting manhole 2 is arranged at the bottom of the upper cone section and is connected with the interior of the upper cone section, the anti-loading and emitting manhole 2 can be opened or closed, and opening the anti-loading and emitting manhole 2 can make the raw materials in the upper cone section leak out along the anti-loading and emitting manhole 2; the anti-shed material manhole 3 is arranged at the bottom of the lower cone section and is connected with the interior of the lower cone section, the anti-shed material manhole 3 can be opened or closed, and opening the anti-shed material manhole 3 can make the poking rod enter the tank body 1 along the anti-shed material manhole 3, and make the operator destroy the shed material structure in the lower cone section through the poking rod, and by arranging the anti-loading and emitting manhole 2 and the anti-shed material manhole 3, the loading and emitting and shed material problems can be dealt with quickly and effectively respectively, thereby improving the practicability and reliability of the equipment and ensuring the continuity of blast furnace production.

[0030] In a preferred scheme of the present embodiment, the anti-installation manhole 2 is tilted downward, and the angle between the anti-installation manhole 2 and the center line of the tank body 1 is 55° to 65°, and the preferred angle is 60°. The design of the anti-installation manhole 2 at a specific angle allows the raw materials to flow out of the manhole more smoothly when installation and fading occurs, thereby improving the efficiency of handling the installation and fading problem.

[0031] In a preferred solution of the present embodiment, the diameter of the anti-installation manhole 2 is 280 mm to 320 mm, preferably 300 mm. The anti-installation manhole 2 with a suitable diameter range can ensure the rapid discharge of raw materials without affecting the structural strength of the tank body 1 due to the excessively large hole diameter.

[0032] In a preferred scheme of the present embodiment, the manhole 3 for preventing shed materials is tilted downward, and the angle between the manhole 3 for preventing shed materials and the center line of the tank body 1 is 40° to 50°, with the preferred angle being 45°. The specific tilt angle of the manhole 3 for preventing shed materials facilitates the operator to insert the poking rod, thereby improving the convenience of handling the shed material problem.

[0033] In a preferred scheme of the present embodiment, the diameter of the anti-shed material manhole 3 is 155mm~165mm, and the preferred diameter is 159mm. The anti-shed material manhole 3 can not only meet the smooth insertion of the poking rod, but also improve the efficiency of handling the shed material problem under the premise of ensuring the structural stability of the tank body 1.

[0034] In a preferred scheme of the present embodiment, the blast furnace top material tank also includes an inspection door 4, and an inspection port is arranged at the top of the upper cone section. The inspection door 4 can be detachably fixedly connected to the inspection port. The arrangement of the inspection door 4 facilitates regular inspection and maintenance of the interior of the tank body 1, improves the maintainability of the equipment, and extends the service life of the equipment.

[0035] In a preferred scheme of the present embodiment, the blast furnace top material tank also includes a plurality of lifting plates 5, each lifting plate 5 is evenly arranged along the circumference of the cylindrical section and fixedly connected to the cylindrical section. The arrangement of the lifting plates 5 facilitates the installation and disassembly of the material tank, thereby improving the installation and maintenance efficiency of the equipment.

[0036] In a preferred scheme of the present embodiment, the blast furnace top material tank also includes a reinforcement 6, which is arranged on the outer side of the junction of the cylindrical section and the lower conical section. The reinforcement 6 enhances the stability of the tank body 1 structure, especially at the junction of the cylindrical section and the lower conical section, and can effectively prevent damage to the tank body 1 caused by stress concentration.

[0037] In a preferred scheme of the present embodiment, the blast furnace top material tank also includes a pressure equalizing interface 7, which is arranged on the tank body 1 and connected to the interior of the tank body 1 to adjust the air pressure in the tank body 1. The pressure equalizing interface 7 can timely adjust the air pressure in the tank body 1 to ensure the pressure balance inside and outside the tank body 1.

[0038] Embodiment 2

[0039] The present invention also provides a method for using the blast furnace top material tank as in the first embodiment, comprising the following steps:

[0040] When it is detected that the blast furnace material tank is bubbling, the operator first prepares a suitable container and places it at the lower end of the anti-bubbling manhole 2.

[0041] The operator carefully opened the anti-installation manhole 2. Since the anti-installation manhole 2 is at an angle of 60° to the center line of the blast furnace material tank and has a diameter of Ф300, the raw materials exceeding the volume of the material tank will naturally leak out along the anti-installation manhole 2 and flow into the storage container below.

[0042] After the raw materials have leaked to a suitable extent, close the anti-manhole 2, clean up the site, and check the material tanks and related equipment to ensure that they can operate normally before resuming production.

[0043] When the blast furnace material tank is found to have material slack, the operator will prepare tools such as the material poking rod.

[0044] The operator opens the anti-shed material manhole 3. Since the anti-shed material manhole 3 is at an angle of 45° to the center line of the blast furnace material tank and has a diameter of Ф159, the operator can smoothly insert the poking rod into the interior of the material tank along the anti-shed material manhole 3.

[0045] Use the poking rod to apply external force to the shed material structure to destroy the stacking state of the shed materials so that the raw materials can fall normally.

[0046] Continue to operate the poking rod until the material shelf problem is completely solved. Then close the anti-material shelf manhole 3, check the material tank unloading situation, and ensure that the blast furnace production returns to normal.

[0047] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A blast furnace top material tank, characterized in that: include: A tank body, the tank body comprising an upper cone section, a cylindrical section and a lower cone section, the upper cone section, the cylindrical section and the lower cone section are integrally connected, a feed port is provided at the top of the upper cone section, and a discharge port is provided at the bottom of the lower cone section; an anti-installation manhole, wherein the anti-installation manhole is provided at the bottom of the upper cone section and is connected to the interior of the upper cone section, the anti-installation manhole can be opened or closed, and opening the anti-installation manhole can allow the raw materials in the upper cone section to leak out through the anti-installation manhole; and A manhole for preventing shed materials from entering the tank is provided at the bottom of the lower cone section and is connected to the interior of the lower cone section. The manhole for preventing shed materials from entering the tank can be opened or closed. Opening the manhole can allow a poking rod to enter the tank body along the manhole, and allow an operator to destroy the shed material structure in the lower cone section through the poking rod.

2. The blast furnace top material tank according to claim 1, characterized in that: The anti-installation manhole is tilted downward, and the angle between the anti-installation manhole and the center line of the tank body is 55° to 65°.

3. The blast furnace top material tank according to claim 2, characterized in that: The diameter of the anti-manhole is 280mm to 320mm.

4. The blast furnace top material tank according to claim 1, characterized in that: The anti-shed material manhole is arranged to be inclined downward, and the angle between the anti-shed material manhole and the center line of the tank body is 40° to 50°.

5. The blast furnace top material tank according to claim 4, characterized in that: The diameter of the anti-shed material manhole is 155mm to 165mm.

6. The blast furnace top material tank according to claim 1, characterized in that: It also includes an inspection door. The top of the upper cone section is provided with an inspection opening, and the inspection door is detachably fixedly connected to the inspection opening.

7. The blast furnace top material tank according to claim 1, characterized in that: It also includes a plurality of hanging plates, each of which is evenly arranged along the circumference of the cylindrical section and fixedly connected to the cylindrical section.

8. The blast furnace top material tank according to claim 1, characterized in that: It also includes a reinforcement member, which is arranged on the outer side of the intersection of the cylindrical section and the lower cone section.

9. The blast furnace top material tank according to claim 1, characterized in that: It also includes a pressure equalization interface, which is arranged on the tank body and communicated with the interior of the tank body to adjust the air pressure in the tank body.

10. A method for using a blast furnace top charging tank according to any one of claims 1 to 9, characterized in that: The following steps are involved: When the tank is detected to be overflowing, the operator first prepares a suitable container and places it at the lower end of the anti-overburst manhole; the operator opens the anti-overburst manhole, and the raw materials exceeding the tank volume will naturally leak out through the anti-overburst manhole and flow into the container below; After the raw materials leak into the tank without bubbling, close the anti-bubbling manhole, clean up the site, and check the tank and related equipment to ensure that they can operate normally before resuming production; When the phenomenon of material shedding is found in the tank body, the operator opens the anti-material shedding manhole, and smoothly inserts the poking rod into the tank body along the anti-material shedding manhole. The poking rod is used to apply external force to the material shedding structure to destroy the stacking state of the material shedding, so that the raw materials can fall normally. The poking rod is continuously operated until the material shedding problem is completely solved, and then the anti-material shedding manhole is closed to check the material unloading situation in the tank to ensure that the blast furnace production returns to normal.

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