CN215237786U - Quick-change ladle bottom device for steel ladle - Google Patents
Quick-change ladle bottom device for steel ladle Download PDFInfo
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- CN215237786U CN215237786U CN202120578789.4U CN202120578789U CN215237786U CN 215237786 U CN215237786 U CN 215237786U CN 202120578789 U CN202120578789 U CN 202120578789U CN 215237786 U CN215237786 U CN 215237786U
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Abstract
The utility model discloses a quick change package end device for ladle, include: the steel structure of the ladle bottom, the permanent lining, the anchoring piece, the brick of the ladle bottom, the brick of the nozzle seat, the nozzle, the air brick of the seat, the air core, the water cooling jacket of the ladle bottom, the flange, the brick of the ladle wall, the brick of the slag line and the brick of the ladle house. The utility model adopts the mode of separating the ladle wall from the ladle bottom for construction, and the whole ladle bottom device is integrally constructed in a refractory material enterprise, thereby greatly shortening the time of the field installation heat treatment process; the water-cooling jacket reduces the temperature of the outer walls of the ladle bottom and the ladle wall, and the use safety of the joint is guaranteed; the permanent lining is prefabricated by adopting a casting material and integrally assembled by pulling the steel structure of the anchoring piece close, the integrity is good, the ladle wall is built by using a layer of refractory material, and the thermal stability is good; the nozzle brick cup and the air brick cup are directly connected with the ladle bottom steel structure, so that the safety performance is greatly improved.
Description
Technical Field
The utility model relates to a novel device is used to the ladle specifically is a quick change package end device is used to ladle.
Background
The ladle is a high-temperature container widely applied in the metallurgical industry, is mainly used for receiving molten steel in the stages of converter steelmaking-refining process and the like, and has the characteristics of frequent use, large temperature change, easy damage of an inner lining, large demand of refractory materials and the like. The ladle refractory material is mainly used for building ladle linings, ladle bottoms, ladle walls, ladle edges, furnace bottom functional elements and the like, and is impacted by high-temperature molten steel in the molten steel receiving process, particularly the high-temperature impact borne by the ladle bottom refractory material is the largest, so that the building thickness of the ladle bottom refractory material is generally larger, the service life of the furnace bottom functional material is generally shorter, and air bricks and a steel tapping hole mechanism are often required to be replaced for several times.
Numerous scientific researchers at home and abroad carry out extensive scientific research and development work on the ladle bottom device, and some countries adopt an integral pouring mode to solve the problem of integrity of the ladle bottom refractory material, but the material has poor thermal stability and is not beneficial to frequent use; some countries adopt the pure refractory material to build the mode, have solved wholeness and thermal stability problem through the means of building of different brick types, different structures, however the construction method is too loaded down with trivial details, has influenced the production rhythm of steel mill, steelmaking efficiency greatly reduced. Therefore, how to solve the problems of repeated maintenance and long construction period caused by different service lives of the ladle wall and the ladle bottom of the ladle becomes a hot point problem concerned by the metallurgical industry and even the refractory material industry.
Disclosure of Invention
In order to solve the prior art not enough, the utility model provides an energy-conserving high-efficient, convenient and fast's ladle is with quick change package end device.
In order to achieve the above object, the utility model discloses a following technical scheme realizes:
a quick-change ladle bottom device for a ladle is characterized by comprising: the steel structure of the ladle bottom, permanent lining, anchor, brick of the ladle bottom, brick of the nozzle pocket, the nozzle, ventilative brick of the seat, ventilative core, water jacket of the ladle bottom, flange, brick of the ladle wall, brick of slag line and brick of the ladle house, said steel structure of the ladle bottom and permanent lining are set up from outside to inside sequentially, the inside wall of the permanent lining is from top to bottom for brick of the ladle wall, brick of slag line, brick of the ladle house sequentially, the brick of the ladle bottom is laid on the permanent lining, the brick edge of the ladle bottom connects with brick of the ladle house;
the inner wall of the ladle bottom steel structure is connected with the permanent lining through an anchoring part;
the ladle bottom water cooling sleeve is arranged on the outer side wall of the ladle bottom steel structure and is as high as the slag line brick;
the nozzle pocket brick and the gas pocket brick sequentially penetrate through the ladle bottom steel structure, the permanent lining and the ladle bottom brick from the bottom, and a nozzle and a gas permeable core are arranged inside the nozzle pocket brick and the gas pocket brick;
and the upper part of the outer side wall of the ladle bottom steel structure is connected with the flange. The ladle bottom steel structure is cylindrical and is made of 1Cr23Ni13 type high-temperature-resistant steel.
The permanent lining is a high-alumina refractory material with the apparent porosity of 14-18%, the normal-temperature compressive strength of 50-95MPa and the masonry thickness of 50-100 mm.
The bottom brick is in volume density>3.0g/cm3The apparent porosity is 2-3%, the room temperature compressive strength is 40-50MPa, and the wall covering brick is volume density>3.0g/cm3The apparent porosity is 2-3%, the normal temperature compressive strength is 40-50MPa, and the slag line brick has a volume density of more than or equal to 2.98g/cm3The apparent porosity is less than or equal to 3.5 percent, the normal temperature compressive strength is more than or equal to 40MPa, and the volume density of the brick is more than or equal to 3.1g/cm3The apparent porosity is 6-7%, and the normal temperature compressive strength is more than or equal to 60 MPa.
The building thickness of the bottom brick is 130-280mm, the building thickness of the wall brick is 110-250mm, the building thickness of the slag line brick is 110-250mm, and the building thickness of the Fufu brick is 110-250 mm.
The nozzle pocket brick and the air permeable pocket brick are respectively a corundum spinel nozzle pocket brick and an air permeable pocket brick with the apparent porosity of less than or equal to 20 percent, the normal-temperature compressive strength of more than or equal to 55MPa and the refractoriness under load of more than or equal to 1680 ℃, the nozzle is a corundum spinel nozzle with the apparent porosity of less than or equal to 20 percent, the normal-temperature compressive strength of more than or equal to 55MPa and the refractoriness under load of more than or equal to 1680 ℃, and the air permeable core is a corundum spinel air permeable core with the apparent porosity of less than or equal to 20 percent and the refractoriness under load of more than or equal to 1680 ℃.
The water gap is Z-80 type, and the air permeable core is T-85 type.
Compared with the prior art, the beneficial effects of the utility model are that: 1) the utility model adopts the mode of separating the ladle wall from the ladle bottom for construction, the whole ladle bottom device is integrally constructed in a refractory material enterprise and then directly assembled and installed in a steel mill, the production rhythm of the steel mill is not influenced, and the time of the heat treatment process of field installation is greatly shortened; 2) the device is provided with the water-cooling jacket, so that the temperature of the outer wall of the ladle bottom and the ladle wall is reduced, and the use safety of a joint is guaranteed; 3) the permanent lining of the device is integrally assembled by adopting a casting material prefabrication and anchoring piece steel structure drawing-in mode, the integrity is good, the ladle wall is built by using a layer of refractory material, and the thermal stability is good; 4) the nozzle brick cup and the air brick cup of the device are directly connected with the ladle bottom steel structure, so that the safety performance is greatly improved, the air brick and the steel tapping hole brick are pressed close to the air brick cup and the nozzle brick cup, and the installation is convenient and rapid.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a sectional view taken along line a-a of fig. 1.
In the figure: 1-ladle bottom steel structure, 2-permanent lining, 3-anchoring piece, 4-ladle bottom brick, 5-nozzle brick cup, 6-nozzle, 7-air permeable brick cup, 8-air permeable core, 9-ladle bottom water cooling jacket, 10-flange, 11-ladle wall brick, 12-slag line brick and 13-ladle house brick.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the embodiments of the present invention and the accompanying drawings, and obviously, 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 work belong to the protection scope of the present invention.
See fig. 1-fig. 2, is a quick change ladle bottom device for ladle of the utility model, include: the steel structure of the ladle bottom 1, the permanent lining 2, the anchor piece 3, the ladle bottom brick 4, the nozzle brick 5, the nozzle 6, the air permeable brick 7, the air permeable core 8, the ladle bottom water cooling jacket 9, the flange 10, the ladle wall brick 11, the slag line brick 12 and the ladle brick 13, the ladle bottom steel structure 1 and the permanent lining 2 are arranged from outside to inside in sequence, the inner side wall of the permanent lining 2 is the ladle wall brick 11, the slag line brick 12 and the ladle brick 13 from top to bottom in sequence, the ladle bottom brick 4 is laid on the permanent lining 2, and the edge of the ladle bottom brick 4 is connected with the ladle brick 13.
The inner wall of the ladle bottom steel structure 1 is connected with the permanent lining 2 through an anchoring piece 3.
The ladle bottom water cooling jacket 9 is arranged on the outer side wall of the ladle bottom steel structure 1 and is as high as the slag line bricks 12.
The nozzle pocket brick 5 and the gas pocket brick 7 sequentially penetrate through the ladle bottom steel structure 1, the permanent lining 2 and the ladle bottom brick 4 from the bottom, and a nozzle 6 and a gas core 8 are arranged inside the nozzle pocket brick 5 and the gas pocket brick 7.
The upper part of the outer side wall of the ladle bottom steel structure 1 is connected with a flange 10. The ladle bottom steel structure 1 is cylindrical and is made of 1Cr23Ni13 (309) type high-temperature-resistant steel.
The permanent lining 2 is a high-alumina refractory material with the apparent porosity of 14-18%, the normal-temperature compressive strength of 50-95MPa and the masonry thickness of 50-100 mm.
The bottom brick 4 is volume density>3.0g/cm3The apparent porosity is 2-3%, the room temperature compressive strength is 40-50MPa, the bottom brick 4 is wrapped, the wall brick 11 is volume density>3.0g/cm3The apparent porosity is 2-3%, the room-temperature compressive strength is 40-50MPa, the brick is a wall-covering brick 11, the volume density of the slag line brick 12 is more than or equal to 2.98g/cm3The apparent porosity is less than or equal to 3.5 percent, the normal temperature compressive strength is more than or equal to 40MPa, the slag line brick 12 and the coated brick 13 have the volume density of more than or equal to 3.1g/cm3The apparent porosity is 6-7%, and the room-temperature compressive strength is more than or equal to 60MPa, and the coated brick is 13.
The building thickness of the bottom brick 4 is 130-280mm, the building thickness of the wall brick 11 is 110-250mm, the building thickness of the slag line brick 12 is 110-250mm, and the building thickness of the top brick 13 is 110-250 mm.
The nozzle pocket brick 5 and the air permeable pocket brick 7 are respectively a corundum spinel nozzle pocket brick 5 and an air permeable pocket brick 7 with the apparent porosity of less than or equal to 20 percent, the normal temperature compressive strength of more than or equal to 55MPa and the refractoriness under load of more than or equal to 1680 ℃, the nozzle 6 is a corundum spinel nozzle 6 with the apparent porosity of less than or equal to 20 percent, the normal temperature compressive strength of more than or equal to 55MPa and the refractoriness under load of more than or equal to 1680 ℃, and the air permeable core 8 is a corundum spinel air permeable core 8 with the apparent porosity of less than or equal to 20 percent and the refractoriness under load of more than or equal to 1680 ℃.
The water gap 6 is Z-80 type, and the air permeable core 8 is T-85 type.
The embodiment of the utility model provides a concrete operation mode does:
firstly, welding an anchoring piece 3 to the inner wall of a ladle bottom steel structure 1, pouring a permanent lining 2 casting material into a mold, curing at normal temperature, and carrying out heat treatment at the temperature of 100 ℃ and 150 ℃ for 24-48 hours, wherein the height of the anchoring piece 3 is one third to one half of the thickness of the permanent lining 2; secondly, a layer of pack of bricks 13 is built on the inner side of the permanent lining 2, the nozzle pocket brick 5 and the gas permeable pocket brick 7 are installed at the bottom of the ladle bottom steel structure 1, and then the nozzle 6 and the gas permeable core 7 are installed inside the nozzle pocket brick 5 and the gas permeable pocket brick 7; then, building bottom-covering bricks 4, wherein the bottom-covering bricks 4 are hermetically connected by adopting magnesia carbon fire clay; and finally, building wall covering bricks and 11 slag line bricks 12 in sequence from bottom to top, and welding a bottom water cooling jacket 9 on the outer wall of the bottom steel structure 1 corresponding to the slag line bricks 12. When the ladle is used, if the quick-change ladle bottom device is damaged or unsafe factors exist, the quick-change ladle bottom device is replaced and is connected with the ladle wall through the flange 10 of the integral device.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A quick-change ladle bottom device for a ladle is characterized by comprising: the steel structure of the ladle bottom (1), a permanent lining (2), an anchoring piece (3), a ladle bottom brick (4), a nozzle brick cup (5), a nozzle (6), a gas permeable brick cup (7), a gas permeable core (8), a ladle bottom water cooling jacket (9), a flange (10), a ladle wall brick (11), a slag line brick (12) and a ladle house brick (13), wherein the ladle bottom steel structure (1) and the permanent lining (2) are sequentially arranged from outside to inside, the inner side wall of the permanent lining (2) sequentially comprises the ladle wall brick (11), the slag line brick (12) and the ladle house brick (13) from top to bottom, the ladle bottom brick (4) is laid on the permanent lining (2), and the edge of the ladle bottom brick (4) is connected with the ladle house brick (13);
the inner wall of the ladle bottom steel structure (1) is connected with the permanent lining (2) through an anchoring piece (3);
the ladle bottom water cooling jacket (9) is arranged on the outer side wall of the ladle bottom steel structure (1) and is as high as the slag line bricks (12);
the nozzle pocket brick (5) and the gas pocket brick (7) sequentially penetrate through the ladle bottom steel structure (1), the permanent lining (2) and the ladle bottom brick (4) from the bottom, and a nozzle (6) and a gas core (8) are arranged inside the nozzle pocket brick (5) and the gas pocket brick (7);
and the upper part of the outer side wall of the ladle bottom steel structure (1) is connected with a flange (10).
2. The quick-change ladle bottom device for the ladle according to claim 1, wherein the ladle bottom steel structure (1) is cylindrical and is made of 1Cr23Ni13 type high-temperature-resistant steel.
3. The quick-change ladle bottom device for the ladle according to claim 1, wherein the permanent lining (2) is a high-alumina refractory material with the apparent porosity of 14-18%, the normal-temperature compressive strength of 50-95MPa and the masonry thickness of 50-100 mm.
4. The quick-change ladle bottom device for the ladle according to claim 1, wherein the ladle bottom bricks (4) have a bulk density>3.0g/cm3The apparent porosity is 2-3%, the normal temperature compressive strength is 40-50MPa, the bottom brick (4) is wrapped, and the wall brick (11) is in volume density>3.0g/cm3The apparent porosity is 2-3%, the normal temperature compressive strength is 40-50MPa, the slag line brick (12) is a wall-covering brick (11) with the volume density of more than or equal to 2.98g/cm3The apparent porosity is less than or equal to 3.5 percent, the normal temperature compressive strength is more than or equal to 40MPa, and the volume density of the coated brick (13) is more than or equal to 3.1g/cm3The apparent porosity is 6-7%, and the normal-temperature compressive strength is more than or equal to 60 MPa.
5. The quick-change ladle bottom device for the ladle as claimed in claim 1, wherein the building thickness of the ladle bottom bricks (4) is 130-280mm, the building thickness of the ladle wall bricks (11) is 110-250mm, the building thickness of the slag line bricks (12) is 110-250mm, and the building thickness of the ladle house bricks (13) is 110-250 mm.
6. The quick-change ladle bottom device for the ladle according to claim 1, wherein the nozzle brick cup (5) and the gas permeable brick cup (7) are respectively a corundum spinel nozzle brick cup (5) and a gas permeable brick cup (7) with the apparent porosity of less than or equal to 20%, the normal-temperature compressive strength of more than or equal to 55MPa and the refractoriness under load of more than or equal to 1680 ℃, the nozzle (6) is a spinel nozzle (6) with the apparent porosity of less than or equal to 20%, the normal-temperature compressive strength of more than or equal to 55MPa and the refractoriness under load of more than or equal to 1680 ℃, and the gas permeable core (8) is a corundum spinel gas permeable core (8) with the apparent porosity of less than or equal to 20% and the refractoriness under load of more than or equal to 1680 ℃.
7. A quick-change ladle bottom device for a ladle according to claim 1, wherein the nozzle (6) is of a Z-80 type and the gas permeable core (8) is of a T-85 type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120578789.4U CN215237786U (en) | 2021-03-22 | 2021-03-22 | Quick-change ladle bottom device for steel ladle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120578789.4U CN215237786U (en) | 2021-03-22 | 2021-03-22 | Quick-change ladle bottom device for steel ladle |
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| Publication Number | Publication Date |
|---|---|
| CN215237786U true CN215237786U (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120578789.4U Active CN215237786U (en) | 2021-03-22 | 2021-03-22 | Quick-change ladle bottom device for steel ladle |
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| Country | Link |
|---|---|
| CN (1) | CN215237786U (en) |
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2021
- 2021-03-22 CN CN202120578789.4U patent/CN215237786U/en active Active
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