CN215162887U - Movable online spray repair device for converter lining - Google Patents
Movable online spray repair device for converter lining Download PDFInfo
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- CN215162887U CN215162887U CN202120636001.0U CN202120636001U CN215162887U CN 215162887 U CN215162887 U CN 215162887U CN 202120636001 U CN202120636001 U CN 202120636001U CN 215162887 U CN215162887 U CN 215162887U
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Abstract
The utility model relates to a converter lining repair equipment technical field especially relates to an online gunning prosthetic devices of movable for converter lining. The device comprises a movable gunning vehicle, wherein the gunning vehicle is positioned on a track in front of a converter mouth; a gunning material storage bin, a water tank, a blending and stirring bin and an operating platform are arranged on the gunning vehicle body, and a tubular large arm made of high-temperature-resistant steel is arranged on one side of the gunning vehicle, which is opposite to a converter mouth; the inner side of the large arm is provided with a material conveying pipe communicated with the gunning material storage bin, the end part of the large arm is provided with a gunning port matched with the end part of the material conveying pipe, the end part of the material conveying pipe is provided with a circular arc-shaped nozzle, and the nozzle is provided with a plurality of spray holes. When appearing the impaired needs restoration of furnace wall, the utility model discloses a device can replace the sediment that splashes and protect the stove operation, utilizes converter tapping flow to carry out online, restore impaired furnace wall fast, reduces conventional smelting flow, realizes the high-efficient utilization of molten steel heat energy.
Description
Technical Field
The utility model relates to a converter lining repair equipment technical field especially relates to an online gunning prosthetic devices of movable for converter lining.
Background
The converter is one of main steel-making devices, and in the metal smelting process, the inside of the converter is influenced by factors such as mechanical impact, chemical erosion, rapid cooling and rapid heating, so that the lining of the converter is weak, and after the lining is thinned to a certain degree, the converter cannot make steel and is forced to stop.
The method for maintaining the converter lining commonly used at present adopts high-pressure nitrogen gas slag splashing furnace protection, such as a slag splashing furnace protection method for controlling the converter type (the granted patent number is CN201610369092.X), the method has the advantages that the converter slag is used for repairing the converter lining, and detailed slag splashing operation steps and parameters are provided, and the defect that the slag splashing operation flow is carried out after the smelting period of each furnace steel is increased by 3-5 minutes; the method for directionally repairing the damaged part of the furnace lining by adopting materials such as magnesia bricks, iron blocks and the like is used, for example, a method for repairing a converter by using waste magnesia carbon bricks (the granted patent No. CN201910037414.4) is mentioned, the furnace lining is repaired by adopting the waste magnesia carbon bricks, the repairing period is more than 30 minutes, for example, a furnace repairing method for a steelmaking converter (the granted patent No. CN201810314866.8) is used, the furnace lining is repaired by soaking reduced iron into liquid slag, and a method for repairing the furnace lining by using smelting time is also existed, so the production efficiency is influenced.
SUMMERY OF THE UTILITY MODEL
In order to overcome the technical problem that prior art exists, the utility model discloses an online gunning prosthetic devices of movable for converter lining. When appearing the impaired needs restoration of furnace wall, the utility model discloses a device can replace the sediment that splashes and protect the stove operation, utilizes converter tapping flow to carry out online, restore impaired furnace wall fast, reduces conventional smelting flow, realizes the high-efficient utilization of molten steel heat energy.
The utility model provides a specific technical scheme as follows:
a movable online gunning repair device for a converter lining comprises a movable gunning vehicle, wherein the gunning vehicle is positioned on a track in front of a converter mouth; a gunning material storage bin, a water tank, a blending and stirring bin and an operating platform are arranged on the gunning vehicle body, and a tubular large arm made of high-temperature-resistant steel is arranged on one side of the gunning vehicle, which is opposite to a converter mouth; the inner side of the large arm is provided with a material conveying pipe communicated with the gunning material storage bin, the end part of the large arm is provided with a gunning port matched with the end part of the material conveying pipe, the end part of the material conveying pipe is provided with a circular arc-shaped nozzle, and the nozzle is provided with a plurality of spray holes.
Furthermore, the large arm can rotate along the central axis thereof, the end part of the large arm is in a horn shape, and the spray repairing port is positioned at the edge of the horn-shaped end part.
Furthermore, the diameter of the end part of the material conveying pipe is reduced from inside to outside and then increased.
The utility model has the advantages as follows:
the utility model discloses a set up mobilizable gunning car on the track of converter fire door, can realize that the converter tapping process restores the inside furnace lining of converter on line, and needn't wait to carry out gunning again after the tapping finishes and restore, the fungible splashes the sediment and protects the stove flow, practices thrift the converter smelting time 3-5 minutes, and the whole smelting efficiency of converter promotes 14%. Practice proves that the heat of molten steel (the temperature of the molten steel is more than 1600 ℃, the temperature of the converter lining is the highest point, and the temperature of the converter lining is more than 1000 ℃) is utilized for gunning repair, so that the quick sintering of a repair material can be realized, and the converter lining can be maintained firmly. In addition, the rotatable gunning mouth can realize the full angle of the damaged furnace lining in the converter, all can realize quick restoration. Moreover, the end part of the conveying pipe is contracted by adopting a necking pipe, and the material is sprayed by adopting an expanded horn mouth, so that the spraying pressure of the repairing material can be further improved, the flow rate can be up to 10m/s, and the flow rate can be improved by more than 30% compared with that of a conventional repairing device.
Drawings
Fig. 1 is a schematic view of a spray repair device according to an embodiment of the present invention;
FIG. 2 is an enlarged view of the end of a feed conveyor pipe.
In the figure: 1. spray repair vehicle; 2. a gunning material storage bin; 3. a water tank; 4. a mixing and stirring bin; 5. an operation table; 6. a large arm; 61. spraying a repaired mouth; 7. a delivery pipe; 71. a spray head; 72. necking down; 8. a converter; 81. a furnace lining.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1 and 2, an embodiment of the present invention provides a movable online gunning repair device for a converter lining, including a movable gunning vehicle 1, where the gunning vehicle 1 is located on a track in front of a converter mouth; a gunning material storage bin 2, a water tank 3, a blending and stirring bin 4 and an operating platform 5 are arranged on the gunning vehicle body of the gunning vehicle 1, and a tubular large arm 6 made of high-temperature-resistant steel is arranged on one side of the gunning vehicle, which is opposite to a converter mouth of a converter 8; a feed delivery pipe 7 communicated with the gunning material storage bin is arranged on the inner side of the large arm, a gunning opening 61 matched with the end part of the feed delivery pipe is arranged at the end part of the large arm, a circular arc-shaped spray head 71 is arranged at the end part of the feed delivery pipe, and a plurality of spray holes are formed in the spray head 71; the gunning mix in the gunning mix storage bin and the water in the water tank are fully stirred in the mixing and stirring bin, and after the operation console is opened, the gunning mix is sprayed onto a furnace lining 81 on the inner side of the converter through the material conveying pipe.
Preferably, in order to increase the gunning area of the furnace lining, the large arm can rotate along the central axis of the large arm, the end part of the large arm is in a horn shape, and the gunning opening is positioned at the edge of the horn-shaped end part, so that the spray head can revolve around the axis of the large arm in the rotating process of the large arm along with the conveying pipe, and the gunning area is increased.
Preferably, in order to further increase the gunning area and improve the adhesion of the gunning material to the furnace lining, the diameter of the end of the feed delivery pipe is reduced from inside to outside and then increased, for example, a neck 72 with an inner diameter of 3cm is arranged at the end of the feed delivery pipe with an inner diameter of 6cm, and the inner diameter of the matching part of the feed delivery pipe and the gunning opening is gradually expanded from 3cm to 8cm, so that the pressure of the gunning material is increased at the neck, and then the gunning material is diffused and discharged at the horn-shaped nozzle.
The working principle is as follows:
preparing before repairing the furnace lining, loading materials in the storage bin, and uniformly mixing the gunning material and water in the stirring bin according to the mass ratio of 3: 1; when the smelting of the converter is finished, the furnace body tilts, 30 seconds after the beginning of tapping, a movable gunning car is started, a large arm enters the position needing to be repaired in the converter, a gunning hole is manually adjusted to accurately align to the damaged part, and the repair is started; pressurizing the uniformly mixed gunning material to 0.3-0.4Mpa, and then jetting the material conveying pipe to the damaged furnace lining part at a high speed; completing the repairing process before the tapping of the converter is finished, and starting a movable gunning vehicle; directly starting converter smelting of the next furnace without slag splashing and furnace protection; the repair operation can also be carried out by utilizing the overhaul time and the deslagging time, and is convenient and efficient.
Practice proves that the heat of molten steel (the temperature of the molten steel is more than 1600 ℃, the temperature of the converter lining is the highest point, and the temperature of the converter lining is more than 1000 ℃) is utilized for gunning repair, so that the quick sintering of a repair material can be realized, and the converter lining can be maintained firmly. The equipment can replace a slag splashing furnace protection process, save the smelting time of the converter by 3-5 minutes, and improve the overall smelting efficiency of the converter by 14 percent. In addition, the rotatable gunning mouth can realize the full angle of the damaged furnace lining in the converter, all can realize quick restoration. Moreover, the end part of the conveying pipe is contracted by adopting a necking pipe, and the material is sprayed by adopting an expanded horn mouth, so that the spraying pressure of the repairing material can be further improved, the flow rate can be up to 10m/s, and the flow rate can be improved by more than 30% compared with that of a conventional repairing device.
It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (3)
1. The utility model provides a portable is spray repair prosthetic devices on line for converter lining which characterized in that: the device comprises a movable gunning vehicle, wherein the gunning vehicle is positioned on a track in front of a converter mouth; a gunning material storage bin, a water tank, a blending and stirring bin and an operating platform are arranged on the gunning vehicle body, and a tubular large arm made of high-temperature-resistant steel is arranged on one side of the gunning vehicle, which is opposite to a converter mouth; the inner side of the large arm is provided with a material conveying pipe communicated with the gunning material storage bin, the end part of the large arm is provided with a gunning port matched with the end part of the material conveying pipe, the end part of the material conveying pipe is provided with a circular arc-shaped nozzle, and the nozzle is provided with a plurality of spray holes.
2. The movable on-line gunning repair device for a converter lining according to claim 1, wherein: the big arm can rotate along the central axis thereof, the end part of the big arm is in a horn shape, and the spray coating port is positioned at the edge of the horn-shaped end part.
3. The movable on-line gunning repair device for a converter lining according to claim 1, wherein: the diameter of the end part of the material conveying pipe is reduced from inside to outside and then increased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120636001.0U CN215162887U (en) | 2021-03-29 | 2021-03-29 | Movable online spray repair device for converter lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120636001.0U CN215162887U (en) | 2021-03-29 | 2021-03-29 | Movable online spray repair device for converter lining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215162887U true CN215162887U (en) | 2021-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120636001.0U Active CN215162887U (en) | 2021-03-29 | 2021-03-29 | Movable online spray repair device for converter lining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215162887U (en) |
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2021
- 2021-03-29 CN CN202120636001.0U patent/CN215162887U/en active Active
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