CN114908211A - Electric furnace bottom blowing air brick and use method thereof - Google Patents
Electric furnace bottom blowing air brick and use method thereof Download PDFInfo
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- CN114908211A CN114908211A CN202210548582.1A CN202210548582A CN114908211A CN 114908211 A CN114908211 A CN 114908211A CN 202210548582 A CN202210548582 A CN 202210548582A CN 114908211 A CN114908211 A CN 114908211A
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- brick
- brick body
- electric furnace
- cup
- external thread
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention relates to an electric furnace bottom-blowing air brick and a using method thereof, wherein the electric furnace bottom-blowing air brick comprises a brick body, an external thread section is arranged on the brick body, a brick cup is connected to the external thread section through threads, the brick cup and the bottom of an electric furnace are relatively fixed, the upper end and the lower end of the brick body are respectively positioned at the upper side and the lower side of the brick cup, and the upper end of the brick body is not lower than a refractory material at the bottom of the furnace. The invention creatively divides the air brick into the brick cup and the brick body which are connected through the screw thread, and the screw thread action between the brick cup and the brick body is utilized to ensure that the brick body rotates and moves upwards, thereby realizing the successive compensation of the brick body, prolonging the service life of the air brick and avoiding the problem that the air brick is blocked by the backing refractory material at the bottom of the furnace.
Description
Technical Field
The invention relates to the technical field of refractory materials, in particular to an electric furnace bottom blowing air brick and a using method thereof.
Background
The electric furnace steelmaking bottom blowing technology has been adopted in the 20 th century and 80 s, and the electric furnace bottom blowing technology is beneficial to strengthening molten pool stirring, promoting slag-steel reaction, homogenizing molten steel components and temperature, reducing the consumption of main and auxiliary materials in the steelmaking process, improving the yield of alloy and having important significance for controlling the molten steel components and the temperature.
Along with the requirement of the electric arc furnace on smelting rhythm and molten steel quality being improved in recent years, the strengthening of molten pool stirring is more important, and the research and application of the electric arc furnace bottom blowing technology are promoted. Electric furnace bottom blowing technological experiments are carried out in a plurality of domestic electric furnace steel mills, and a part of the steel mills are already applied to large-scale industry. The bottom blowing process of the electric furnace cannot be widely popularized and used in the electric furnace all the time because of the short service life of the bottom blowing bricks of the electric furnace and the blockage of the bottom blowing air bricks caused by the operation of backing up the bottom of the electric furnace in the middle and later periods of the service of the electric furnace.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the bottom-blowing air brick of the electric furnace and the use method thereof, which can effectively prolong the service life of the bottom-blowing air brick, and most importantly, can solve the problem of 'old and difficult' of blocking the air brick by using a refractory material to pad the bottom of the electric furnace, thereby clearing obstacles for large-scale popularization of the bottom-blowing air brick of the electric furnace.
The invention is realized through the following technical scheme, and provides an electric furnace bottom blowing air brick which comprises a brick body, wherein an external thread section is arranged on the brick body, a brick cup is connected to the external thread section through threads, the brick cup and the bottom of an electric furnace are relatively fixedly arranged, the upper end and the lower end of the brick body are respectively positioned on the upper side and the lower side of the brick cup, and the upper end of the brick body is not lower than a refractory material at the bottom of the furnace.
This scheme is through setting up the brick cup, provides the support for the installation of the brick body to utilize the threaded connection of the brick body and brick cup, make the brick body realize vertical displacement in the pivoted, thereby be convenient for the upwards successive transfer of the brick body mends, prolonged air brick's life, also avoided the stove bottom to fill up the back refractory material and blockked up air brick.
Preferably, the side surface of the brick body is fixedly connected with a plurality of rotary force applying rods positioned below the brick cup, and the rotary force applying rods are distributed at intervals along the circumferential direction. This optimization scheme is convenient for carry out the rotation operation to the brick body through setting up rotatory application of force pole, and is not only laborsaving, has improved the security of operation moreover.
Preferably, the upper part of the external thread section is an upper cylindrical section, the lower part of the external thread section is a lower cylindrical section, the upper cylindrical section, the lower cylindrical section and the external thread section are coaxial integrated parts, and the rotary force application rod is fixedly connected to the side surface of the lower cylindrical section. This optimization scheme's brick body simple structure to only set up the external screw thread section between last cylinder section and lower cylinder section, reduced the processing degree of difficulty, with last cylinder section, lower cylinder section and external screw thread section set up to coaxial integrated into one piece spare, not only guaranteed air brick's structural strength, be convenient for moreover produce the preparation.
The scheme also provides a use method of the electric furnace bottom blowing air brick, which comprises the following steps: connecting the external thread section of the brick body with the brick cup, fixing the brick cup on a bottom blowing port at the bottom of the electric furnace, and rotating the brick body to enable the upper part of the brick body to be moved upwards through the bottom blowing port to be flush with or higher than the refractory material at the bottom of the furnace; when the bottom of the electric furnace is seriously corroded and needs to be shimmed, molten steel in the electric furnace is discharged completely, sintered layers on the upper part and the periphery of a brick body are cleaned, the brick body is moved upwards by rotating the brick body, the brick body is advanced to the position required by the shimmed bottom of the furnace, and bottom blowing smelting is continuously carried out.
The invention has the beneficial effects that: the air brick is creatively divided into the brick seat and the brick body which are connected through the threads, and the upward displacement is generated while the brick body rotates by utilizing the thread effect between the brick seat and the brick body, so that the successive repair of the brick body is realized, the service life of the air brick is prolonged, and the problem that the air brick is blocked by a bottom padding refractory material is avoided.
Drawings
FIG. 1 is a schematic view of the structure of the air brick of the present invention;
shown in the figure:
1. the brick body 2, the external thread section 3, the brick cup 4, the rotatory application of force pole.
Detailed Description
In order to clearly explain the technical features of the present solution, the present solution is explained by the following detailed description.
As shown in figure 1, the electric furnace bottom blowing air brick comprises a brick body 1, wherein an external thread section 2 is arranged on the brick body, a brick cup 3 is connected onto the external thread section through threads, an internal thread matched with the external thread section is arranged on the brick cup, the brick cup and the bottom of the electric furnace are relatively fixedly arranged, the upper end and the lower end of the brick body are respectively positioned on the upper side and the lower side of the brick cup, and the upper end of the brick body is not lower than the bottom refractory material.
Specifically, the top of external screw thread section is the cylinder section, and the below of external screw thread section is lower cylinder section, goes up cylinder section, lower cylinder section and external screw thread section and is coaxial integrated into one piece spare.
In order to facilitate the rotation operation of the brick body, a plurality of rotary force applying rods 4 positioned below the brick cup are fixedly connected to the side surface of the brick body, the rotary force applying rods are distributed at intervals along the circumferential direction, as an optimized scheme, the rotary force applying rods are fixedly connected to the side surface of the lower cylindrical section, and the upward movement of the brick body is limited in a limiting manner by the rotary force applying rods.
The use method of the electric furnace bottom-blown air brick comprises the following steps: connecting the external thread section of the brick body with the brick cup, fixing the brick cup on a bottom blowing port at the bottom of the electric furnace, rotating the brick body to enable the upper part of the brick body to be moved upwards through the bottom blowing port to be flush with or higher than the refractory material at the bottom of the furnace, and enabling the bottom part of the brick body to protrude downwards out of the brick cup, so that the bottom blowing air brick is normally used according to the prior art; when the bottom of the electric furnace is seriously corroded and needs to be shimmed, molten steel in the electric furnace is discharged completely, the upper part of a brick body and a peripheral sintering layer are cleaned, so that resistance is reduced, the brick body moves upwards by rotating the brick body, the brick body is advanced to the required height behind the shimmed bottom of the electric furnace, bottom blowing smelting is continuously carried out, and the operation can be repeatedly carried out as required.
The bottom-blowing air brick of the electric furnace has long service life, convenient installation and simple operation, and the use method of the invention solves the problem of difficult use of the refractory material for padding up the bottom of the electric furnace to block the air brick, thereby clearing obstacles for bottom-blowing in large-scale popularization of the electric furnace.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.
Claims (4)
1. The utility model provides an electric stove bottom blowing air brick, includes the brick body, its characterized in that: the brick body is provided with an external thread section, the external thread section is connected with a brick cup through threads, the brick cup is fixed with the bottom of the electric furnace relatively, the upper end and the lower end of the brick body are respectively positioned on the upper side and the lower side of the brick cup, and the upper end of the brick body is not lower than the bottom refractory material.
2. The bottom-blown air brick of an electric furnace according to claim 1, characterized in that: the side of the brick body is fixedly connected with a plurality of rotary force applying rods positioned below the brick cup, and the rotary force applying rods are distributed at intervals along the circumferential direction.
3. The bottom-blown air brick of the electric furnace according to claim 2, characterized in that: the upper portion of the external thread section is an upper cylindrical section, the lower portion of the external thread section is a lower cylindrical section, the upper cylindrical section, the lower cylindrical section and the external thread section are coaxial integrated parts, and the rotary force application rod is fixedly connected to the side face of the lower cylindrical section.
4. A use method of the electric furnace bottom-blown air brick as claimed in any one of claims 1 to 3 is characterized in that:
connecting the external thread section of the brick body with the brick cup, fixing the brick cup on a bottom blowing port at the bottom of the electric furnace, and rotating the brick body to enable the upper part of the brick body to be moved upwards through the bottom blowing port to be flush with or higher than the refractory material at the bottom of the furnace;
when the bottom of the electric furnace is seriously corroded and needs to be shimmed, molten steel in the electric furnace is discharged completely, sintered layers on the upper part and the periphery of a brick body are cleaned, the brick body is moved upwards by rotating the brick body, the brick body is advanced to the position required by the shimmed bottom of the furnace, and bottom blowing smelting is continuously carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210548582.1A CN114908211A (en) | 2022-05-20 | 2022-05-20 | Electric furnace bottom blowing air brick and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210548582.1A CN114908211A (en) | 2022-05-20 | 2022-05-20 | Electric furnace bottom blowing air brick and use method thereof |
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| Publication Number | Publication Date |
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| CN114908211A true CN114908211A (en) | 2022-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210548582.1A Pending CN114908211A (en) | 2022-05-20 | 2022-05-20 | Electric furnace bottom blowing air brick and use method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA891546B (en) * | 1988-03-12 | 1989-11-29 | Didier Werke Ag | Gas-fluxing stone |
| CN103722164A (en) * | 2013-12-20 | 2014-04-16 | 鞍钢股份有限公司 | Method for installing and fixing air brick on outer upper part of steel ladle |
| CN204075186U (en) * | 2014-09-17 | 2015-01-07 | 洛阳利尔耐火材料有限公司 | A kind of split type air brick core |
| CN107790693A (en) * | 2016-09-06 | 2018-03-13 | 鞍钢股份有限公司 | Method for preventing steel leakage of steel ladle external-mounted air brick |
| CN210215437U (en) * | 2019-06-06 | 2020-03-31 | 常州苏耐冶金耐火材料有限公司 | Split type air brick |
| CN112048591A (en) * | 2019-06-06 | 2020-12-08 | 常州苏耐冶金耐火材料有限公司 | Split type air brick |
-
2022
- 2022-05-20 CN CN202210548582.1A patent/CN114908211A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ZA891546B (en) * | 1988-03-12 | 1989-11-29 | Didier Werke Ag | Gas-fluxing stone |
| CN103722164A (en) * | 2013-12-20 | 2014-04-16 | 鞍钢股份有限公司 | Method for installing and fixing air brick on outer upper part of steel ladle |
| CN204075186U (en) * | 2014-09-17 | 2015-01-07 | 洛阳利尔耐火材料有限公司 | A kind of split type air brick core |
| CN107790693A (en) * | 2016-09-06 | 2018-03-13 | 鞍钢股份有限公司 | Method for preventing steel leakage of steel ladle external-mounted air brick |
| CN210215437U (en) * | 2019-06-06 | 2020-03-31 | 常州苏耐冶金耐火材料有限公司 | Split type air brick |
| CN112048591A (en) * | 2019-06-06 | 2020-12-08 | 常州苏耐冶金耐火材料有限公司 | Split type air brick |
Non-Patent Citations (1)
| Title |
|---|
| 本书编辑委员会: "《新编钢水精炼暨铁水预处理1500问》", vol. 1, 中国科学技术出版社, pages: 408 * |
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