CN217709532U - Anti-splashing residual iron discharging device for blast furnace - Google Patents
Anti-splashing residual iron discharging device for blast furnace Download PDFInfo
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- CN217709532U CN217709532U CN202121788349.8U CN202121788349U CN217709532U CN 217709532 U CN217709532 U CN 217709532U CN 202121788349 U CN202121788349 U CN 202121788349U CN 217709532 U CN217709532 U CN 217709532U
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Abstract
The utility model belongs to the technical field of the technique of blast furnace overhaul engineering and specifically relates to a incomplete iron discharging equipment of splash is prevented to blast furnace, and it includes supporting mechanism, establishes backing plate on supporting mechanism, establishes the incomplete iron runner on the backing plate, establishes the baffle that lies in incomplete iron runner both sides on the backing plate and establishes the connecting plate that links to each other with the blast furnace shell on the baffle. The application can improve the condition that the molten iron is sprayed outwards when the residual iron is discharged during the overhaul of the blast furnace.
Description
Technical Field
The application relates to the technical field of blast furnace overhaul projects, in particular to a splash-proof residual iron discharging device for a blast furnace.
Background
When the service life of an iron-making blast furnace commonly used for industrial iron-making reaches a preset service life, major repair and maintenance are required. Blast furnace overhaul engineering is an engineering project with high risk and high professional technical requirement. The operation of discharging the residual iron in the blast furnace overhaul project is particularly important. More residual iron can be discharged more effectively, so that the residual molten iron in the furnace is less, the residual dead iron layer is better formed, the subsequent overhaul work of the blast furnace is directly influenced, and even the whole construction period of the overhaul of the blast furnace is influenced.
At present, the situation of molten iron splashing is easy to occur in the residual iron discharging operation of the blast furnace. The main reason is that the flow speed of molten iron flowing into the ladle from a high position along the residual iron groove is too high, and the molten iron collides with the inner wall of the residual iron groove and the inner wall of the ladle. The molten iron splashing not only can cause resource waste, but also has potential safety hazards such as fire hazard.
In view of the above-mentioned related technologies, the inventors found that there is a defect that molten iron splashing easily occurs in the existing blast furnace overhaul residual iron discharging operation process.
SUMMERY OF THE UTILITY MODEL
In order to improve the condition that the molten iron outwards splashes when blast furnace overhaul residual iron discharges the operation, this application provides a splash residual iron discharging equipment is prevented to blast furnace.
The application provides a blast furnace prevents splashing residual iron discharging equipment adopts following technical scheme:
the utility model provides a blast furnace prevents splash residual iron discharging equipment, includes the supporting mechanism, establishes the backing plate on the supporting mechanism, establishes the residual iron ditch on the backing plate, establishes the baffle that is located residual iron ditch both sides on the backing plate and establishes the connecting plate that links to each other with the blast furnace shell on the baffle.
Through adopting above-mentioned technical scheme, supporting mechanism carries out the outrigger to the scrap iron ditch, and the backing plate has played convenient loading and unloading and has strengthened the effect of overall structure intensity, and the scrap iron ditch is as the drainage channel of blast furnace molten iron, has played the effect of drainage and direction to the molten iron, and the molten iron that collides with the scrap iron ditch when being located scrap iron ditch both sides can avoid putting the scrap iron splashes to the outside of scrap iron ditch.
Optionally, the supporting mechanism includes a supporting leg fixedly arranged on the ground and a supporting frame sleeved on the supporting leg.
By adopting the technical scheme, the supporting frame can play a firm supporting role for the residual iron runner, the supporting leg fixes the whole supporting mechanism on the ground, and the structural design of the supporting frame sleeve on the supporting leg can enable the height of the supporting mechanism to be adjustable, so that the supporting frame can be conveniently matched with residual iron openings on different blast furnaces, which are opened at different heights.
Optionally, the surface of the base plate connected with the supporting mechanism is provided with a reinforcing rib.
Through adopting above-mentioned technical scheme, establish on the backing plate and link to each other the strengthening rib on surface with supporting mechanism and can increase the mechanical strength of backing plate, avoided pressure and the high temperature that produces when the molten iron flows through incomplete iron runner to make the backing plate produce the phenomenon emergence of warping.
Optionally, a slow flow baffle is arranged in the residual iron trough.
By adopting the technical scheme, when the molten iron flows out of the blast furnace and flows through the residual iron runner, the buffering baffle plate plays a role in buffering and decelerating the molten iron flow, the flow speed of the molten iron is reduced, the collision condition of the molten iron with the residual iron runner and the ladle is reduced, and the condition that the molten iron is sprayed outwards when the blast furnace overhaul residual iron is discharged is improved.
Optionally, the two ends of the baffle are provided with lifting lugs.
Through adopting above-mentioned technical scheme, establish the lug at the baffle edge and provide the stress point for the hoist lifts by crane this application, make this application be convenient for more the operation at the process of installation and dismantlement.
Optionally, a protective cover is arranged at one end of the baffle far away from the blast furnace.
By adopting the technical scheme, the protective cover arranged on the baffle plate and far away from one end of the blast furnace can block sparks generated by collision between molten iron and a ladle when the molten iron flows into the ladle, so that the condition that the sparks splash to the outer side of the ladle is avoided, and the condition that the molten iron splashes outwards when the blast furnace overhaul residual iron is discharged is improved.
Optionally, one side of the protective cover close to the residual iron runner is provided with a high temperature resistant layer.
Through adopting above-mentioned technical scheme, establish the high temperature resistant layer that is close to on the one side of incomplete iron runner on the protection casing and can improve the high temperature resistance of protection casing, can avoid causing the damage to the structure of protection casing from the high temperature that produces when the molten iron reaches the ladle from the molten iron ditch under the condition more than 1500 ℃.
Optionally, a flow guiding ramp is arranged at one end of the residual iron runner close to the blast furnace.
By adopting the technical scheme, the diversion ramp fills up the height difference between the blast furnace residual iron hole and the residual iron runner, plays the roles of diversion and buffering on the molten iron flowing through the residual iron runner, and improves the condition that the molten iron is sprayed outwards when the residual iron is discharged during the overhaul of the blast furnace.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the supporting mechanism stably supports the residual iron runner, the base plate plays roles in facilitating loading and unloading and strengthening the overall structural strength, the residual iron runner is used as a discharge channel of blast furnace molten iron and plays roles in guiding and guiding molten iron, and the baffle plates positioned on two sides of the residual iron runner can prevent the molten iron colliding with the residual iron runner from splashing to the outer side of the residual iron runner when the residual iron is placed;
2. the slow flow baffle plate plays a role in buffering and decelerating molten iron flow, reduces the flow velocity of the molten iron, reduces the collision condition of the molten iron with a residual iron runner and a ladle, and improves the outward splashing condition of the molten iron during the discharge operation of blast furnace overhaul residual iron;
3. the protection casing in this application can keep off the mars that produces with the ladle collision when the molten iron flows into the ladle in the ladle, has avoided the mars to splash the condition in the ladle outside, has improved the condition that the molten iron outwards splashes when blast furnace overhaul residual iron discharges the operation.
Drawings
FIG. 1 is a schematic structural diagram of a blast furnace anti-splashing residual iron discharging device disclosed in an embodiment of the application.
FIG. 2 is a schematic sectional view of a discharge device for preventing residual iron from splashing in a blast furnace according to an embodiment of the present application.
Fig. 3 is a schematic view for showing a high temperature resistant layer on the surface of the shield cover in the embodiment of the present application.
Fig. 4 is a partially enlarged view of a portion a in fig. 2.
Description of reference numerals: 1. a support mechanism; 11. supporting legs; 12. a support frame; 2. a base plate; 21. reinforcing ribs; 3. a residual iron runner; 31. a slow flow baffle plate; 4. a baffle plate; 41. lifting lugs; 5. a connecting plate; 6. a protective cover; 61. a high temperature resistant layer; 7. a flow diversion ramp.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The blast furnace overhaul project is short in time and heavy in task, each link of overhaul influences subsequent work, and the step of putting residual iron is the first step of blast furnace overhaul. In order to shorten the furnace raking working time after the furnace is stopped and reduce the residual iron allowance in the furnace hearth, the residual iron discharging operation is required to be carried out according to the corrosion condition of the furnace bottom of the furnace hearth of the blast furnace in the blast furnace stopping overhaul project. The residual iron discharging operation needs to be carried out through calculation, then an opening is formed in a proper position of the blast furnace, and molten iron in the blast furnace is guided to a ladle through a residual iron runner. However, in the process of guiding the molten iron to the ladle, the molten iron often collides with the residual iron runner and the ladle to cause molten iron splashing. In order to reduce the occurrence of the situation, the embodiment of the application provides a device for preventing the splashing and residual iron of the blast furnace.
The embodiment of the application discloses a device for discharging splashing-proof residual iron of a blast furnace. Referring to fig. 1 and 2, the anti-splashing residual iron discharging device for the blast furnace comprises a supporting mechanism 1, a backing plate 2, a residual iron runner 3, a baffle 4 and a connecting plate 5. Wherein, supporting mechanism 1 fixed mounting is subaerial, backing plate 2 fixed mounting is on supporting mechanism 1's top, and incomplete indisputable ditch 3 fixed mounting is on backing plate 2's upper surface, and baffle 4 fixed mounting is on two sides of backing plate 2, and connecting plate 5 and baffle 4 mutually perpendicular fixed connection.
The supporting mechanism 1 provides firm support for the whole device, the base plate 2 plays a role in connecting the residual iron runner 3 with the supporting mechanism 1, the residual iron runner 3 serves as a channel for molten iron drainage and plays a role in guiding molten iron in the blast furnace to a ladle, the baffle 4 can prevent sparks generated in the molten iron drainage process from splashing to the outer side of the residual iron runner 3, and the connecting plate 5 plays a role in fixedly connecting the whole device with the blast furnace together.
Referring to fig. 1 and 2, the support mechanism 1 includes support legs 11 and a support frame 12. The supporting legs 11 can be made of rectangular hollow steel pipes, and the supporting frames 12 are sleeved on the supporting legs 11 to form sliding connection and are fixed in a pin or bolt connection mode, so that the supporting mechanism 1 can achieve the function of adjusting the height.
Referring to fig. 1 and 2, the backing plate 2 may be a rectangular metal plate, and the backing plate 2 is provided with rectangular reinforcing ribs 21 in an integral manner along a length direction. The backing plate 2 is fixedly connected with the support frame 12 through bolts, the support frame 12 and the scrap iron groove 3 are connected together, and the reinforcing ribs 21 increase the mechanical strength of the backing plate 2, so that the backing plate 2 cannot deform due to high temperature and pressure of molten iron.
Referring to fig. 2, the residual iron runner 3 can be formed by pouring a refractory castable containing aluminum oxide and silicon carbide on the upper surface of the backing plate 2, a slow flow baffle 31 is installed in the residual iron runner 3 in an integrated manner, and the slow flow baffle 31 can slow down the flow rate of molten iron flowing through the residual iron runner 3, so that the splashing condition of the molten iron is reduced.
Referring to fig. 1 and 2, the baffle 4 may be two rectangular metal plates symmetrically disposed at two sides of the scrap runner 3, and the lower edge of the baffle 4 is fixedly connected to the backing plate 2 by welding. Lifting lugs 41 are arranged at two ends of the upper edge of the baffle 4 in an integrally formed mode, and the lifting lugs 41 provide stress points for the whole device hoisted by the crane.
Referring to fig. 1 and 2, the connecting plate 5 may be made of a rectangular metal plate, the connecting plate 5 is installed at one end of the baffle plate 4 close to the blast furnace in a welding manner, the connecting plate 5 is perpendicular to the baffle plate 4, a plurality of bolt holes are formed in the connecting plate 5, and the connecting plate 5 may be fixed on the blast furnace in a bolt connection manner, so that the whole device is fixedly connected with the blast furnace.
Referring to fig. 1 and 2, the protective cover 6 can be made of a metal plate by welding, the protective cover 6 is fixedly connected to one end, far away from the blast furnace, of the baffle plate 4 in a welding mode, one surface, close to the residual iron trough 3, of the protective cover 6 is coated with a high-temperature resistant layer 61, and the high-temperature resistant layer 61 can be made of inorganic refractory coating.
Referring to fig. 2, the diversion ramp 7 may be made of refractory earth, and the diversion ramp 7 is installed on the residual iron runner 3 and located below the residual iron mouth of the blast furnace, and is used for filling a gap between the residual iron mouth of the blast furnace and the residual iron runner 3.
The implementation principle of the anti-splashing residual iron discharging device for the blast furnace is as follows: the constructor firstly adjusts the height of the supporting mechanism 1 to a proper position according to the height of the blast furnace taphole, then fixes the relative position of the supporting leg 11 and the supporting frame 12 by using the pin, then fixes the backing plate 2 on the supporting frame 12 by the bolt, and then fixedly connects the connecting plate 5 and the blast furnace shell together by the bolt.
And opening a residual iron port of the blast furnace, and leading the molten iron to flow into the residual iron runner 3 from the flow guide ramp 7 and then into the ladle through the residual iron runner 3. In the process, the slow flow baffle 31 has a slow speed effect on the molten iron flow, the baffle 4 and the protective cover 6 both have an effect of preventing the molten iron from splashing to the outer side of the residual iron ditch 3, and the condition of the molten iron splashing in the residual iron discharging operation of the blast furnace overhaul is improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a blast furnace prevents splash residual iron discharging equipment which characterized in that: comprises a supporting mechanism (1), a backing plate (2) arranged on the supporting mechanism (1), a residual iron runner (3) arranged on the backing plate (2), baffle plates (4) arranged on the backing plate (2) and positioned at two sides of the residual iron runner (3), and a connecting plate (5) arranged on the baffle plates (4) and connected with a blast furnace shell.
2. The blast furnace anti-splash residual iron discharging device according to claim 1, wherein: the supporting mechanism (1) comprises a supporting leg (11) fixedly arranged on the ground and a supporting frame (12) sleeved on the supporting leg (11).
3. The blast furnace anti-splash residual iron discharging device according to claim 1, wherein: and reinforcing ribs (21) are arranged on the surfaces of the base plate (2) and the supporting mechanism (1).
4. The blast furnace anti-splash residual iron discharging device according to claim 1, wherein: a slow flow baffle (31) is arranged in the residual iron runner (3).
5. The blast furnace anti-splash residual iron discharging device according to claim 1, wherein: lifting lugs (41) are arranged at two ends of the baffle (4).
6. The blast furnace anti-splash residual iron discharging device according to claim 1, wherein: and a protective cover (6) is arranged at one end of the baffle (4) far away from the blast furnace.
7. The blast furnace anti-splash residual iron discharging device according to claim 6, wherein: and a high-temperature-resistant layer (61) is arranged on one surface, close to the residual iron runner (3), of the protective cover (6).
8. The blast furnace anti-splash residual iron discharging device according to claim 1, wherein: and a flow guide ramp (7) is arranged at one end of the residual iron runner (3) close to the blast furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121788349.8U CN217709532U (en) | 2021-08-02 | 2021-08-02 | Anti-splashing residual iron discharging device for blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121788349.8U CN217709532U (en) | 2021-08-02 | 2021-08-02 | Anti-splashing residual iron discharging device for blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217709532U true CN217709532U (en) | 2022-11-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121788349.8U Active CN217709532U (en) | 2021-08-02 | 2021-08-02 | Anti-splashing residual iron discharging device for blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217709532U (en) |
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2021
- 2021-08-02 CN CN202121788349.8U patent/CN217709532U/en active Active
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