CN210632933U - Furnace lining for ladle slag line area - Google Patents
Furnace lining for ladle slag line area Download PDFInfo
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- CN210632933U CN210632933U CN201921312951.7U CN201921312951U CN210632933U CN 210632933 U CN210632933 U CN 210632933U CN 201921312951 U CN201921312951 U CN 201921312951U CN 210632933 U CN210632933 U CN 210632933U
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- ladle
- furnace lining
- lining
- slag line
- brick
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Abstract
The utility model relates to a technical field is smelted to the ladle, in particular to a furnace wall for ladle slag line district, its characterized in that, it assembles the furnace wall for prefabricated furnace lining brick, locates ladle slag line district 1~2 meters within range, sets up the round at least along ladle internal surface, and every circle is formed by 4~6 pieces of furnace lining brick concatenations, is equipped with a pair of primary and secondary between the adjacent furnace lining brick at least and detains, the primary and secondary is detained the half cylinder and the half cylindrical groove lock structure that matches for a pair of size, and its half cylinder axis is mutually perpendicular with ground. Compared with the prior art, the beneficial effects of the utility model are that: 1) the slag line zone furnace lining of the ladle is composed of a plurality of large precast furnace lining bricks, can be directly hoisted to the top of the ladle for installation, and is labor-saving in installation; 2) the snap fastener is tightly combined by the structural design, the industrial problem that steel slag corrodes steel ladle refractory materials through brick joints is solved, and the service life of the steel ladle is prolonged; 3) the pure magnesium lining brick reduces the carbon content of the slag line position and improves the smelting efficiency of steel.
Description
Technical Field
The utility model relates to a ladle smelting technical field, in particular to a furnace lining for ladle slag line area.
Background
The magnesia carbon brick has good refractoriness, slag invasion resistance and thermal shock resistance, and is widely applied to steelmaking production. In the ladle refining process, the erosion of slag line magnesia carbon bricks is usually the most serious area of damage of each part of a furnace lining, the slag line magnesia carbon bricks are subjected to chemical erosion and mechanical scouring of slag for a long time, and the damage of the slag line magnesia carbon bricks is an important factor influencing the production efficiency and the production cost.
The magnesia carbon bricks used at the slag line part of the traditional ladle have the defects of complicated installation, manual installation and long construction time in practical application. At present, numerous scholars have elaborated the erosion mechanism of the magnesia carbon brick in more detail, and the interaction between the magnesia carbon brick and the slag is usually tested and researched by adopting a static impregnation method and a dynamic impregnation method, so that the erosion and damage process of the magnesia carbon brick mainly comprises the following steps: oxidation, decarburization, dissolution, erosion, scouring and the like. The carbon content omega (C) of the magnesia carbon brick used at the slag line part is less than 14 percent, although the addition of graphite can improve the corrosion resistance of the magnesia carbon brick, the addition of carbon can also influence the smelting process of steel. Meanwhile, the slag penetrates through the brick seams to corrode the steel ladle refractory, so that the service life of the steel ladle is shortened. Therefore, a furnace lining for a ladle slag line zone is in urgent need of research.
Disclosure of Invention
The utility model aims at providing a furnace lining for a steel ladle slag line area, overcoming the defects of the prior art, adopting a plurality of pure magnesium precast bricks to splice and form, and the snap fastener structure design leads the furnace lining to be tightly combined, thus solving the problem that steel slag corrodes steel ladle refractory materials through brick joints and the service life of steel ladles is short; the hoisting hole is arranged, so that the hoisting hole can be directly hoisted to the top of the ladle for installation by hoisting equipment, and the construction time for manually installing the furnace lining of the slag line area of the magnesia carbon brick masonry ladle is reduced.
In order to achieve the above object, the utility model discloses a following technical scheme realizes:
a furnace lining for a steel ladle slag line area is characterized in that the prefabricated furnace lining brick assembled furnace lining is arranged in the range of 1-2 meters of the steel ladle slag line area, at least one circle is arranged along the inner surface of a steel ladle, each circle is formed by splicing 4-6 furnace lining bricks, at least one pair of snap fasteners are arranged between every two adjacent furnace lining bricks, each snap fastener is of a pair of semi-cylindrical and semi-cylindrical groove fastening structures with matched sizes, and the axis of each semi-cylindrical is perpendicular to the ground.
When the furnace lining brick is arranged in more than two circles, a rock wool layer is arranged between the two circles.
The diameter of the semi-cylinder is 100-150 mm.
The outer surface and the inner surface of the furnace lining brick are parallel to each other and form an included angle of 80-85 degrees with the ground.
The wall thickness of the furnace lining brick is 200-400 mm, and the primary and secondary buckles are arranged in the brick wall in the middle.
The furnace lining brick is provided with at least two hoisting holes, the central axis of each hoisting hole is perpendicular to the ground, and the two hoisting holes are symmetrically arranged relative to the theoretical center of gravity of the furnace lining brick.
The distance between the hoisting hole and the theoretical gravity center line of the furnace lining brick is 0.5-1 m.
The furnace lining brick is made of low-carbon electric melting magnesia castable.
Compared with the prior art, the beneficial effects of the utility model are that: 1) the slag line zone furnace lining of the ladle is composed of a plurality of large prefabricated furnace lining bricks (4-6 bricks on each layer), can be directly hoisted to the top of the ladle for installation, saves labor in installation and greatly reduces the construction time for manually building the slag line zone furnace lining of the ladle; 2) the snap fastener structure design enables the snap fastener to be tightly combined, the industrial problem that steel slag corrodes steel ladle refractory materials through brick joints is solved, and the service life of the steel ladle is prolonged; 3) the pure magnesium lining brick reduces the carbon content of the slag line position, improves the smelting efficiency of steel and further improves the economic benefit.
Drawings
Fig. 1 is the explosion structure diagram of the round assembling structure of the utility model.
Fig. 2 is the structure diagram of the two-ring assembling embodiment of the present invention.
Fig. 3 is a schematic view of a usage status of the embodiment of the present invention.
In the figure: 1-snap fastener, 2-hoisting hole, 3-furnace lining brick, 4-ladle, 5-furnace lining brick theoretical gravity center line, 11-semi-cylinder and 12-semi-cylinder groove.
Detailed Description
The following embodiments are further described in the following:
in the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
See fig. 1 to fig. 3, is the utility model relates to a furnace wall embodiment schematic structure diagram for ladle slag line district, it assembles the furnace wall for prefabricated furnace lining brick, locate 4 slag lines of ladle and distinguish 1~2 meters within ranges, set up two circles along 4 internal surfaces of ladle, every circle is formed by 3 concatenations of 4 furnace lining bricks, be equipped with a pair of primary and secondary between the adjacent furnace lining brick 3 and detain 1, the primary and secondary is detained the half cylinder 11 and the 12 lock structures in semi-cylindrical groove that match for a pair of size, the central axis of its half cylinder 11 is mutually perpendicular with ground. The semi-cylinder 11 of the snap fastener has a diameter of 120 mm. The wall thickness of the furnace lining brick 3 is 300mm, and the snap fastener 1 is arranged in the middle in the brick wall so as to ensure enough structural strength.
The outer surface and the inner surface of the furnace lining brick 3 are parallel to each other, an included angle α of 80-85 degrees is formed between the outer surface and the inner surface of the furnace lining brick 3 and the ground, and the included angle is consistent with the inner surface of the ladle 4, so that the furnace lining brick 3 can be tightly attached to the inner surface of the ladle 4.
The furnace lining brick 3 is at least provided with two hoisting holes 2, the central axis of each hoisting hole 2 is perpendicular to the ground, the two hoisting holes are symmetrically arranged relative to the theoretical gravity line 5 of the furnace lining brick, the distance between each hoisting hole 2 and the theoretical gravity line h of the furnace lining brick is 0.85m, and the symmetrically arranged hoisting holes have the advantages that when the furnace lining brick is hoisted by the hoisting device, the balance of a brick body can be kept, and the furnace lining brick is convenient to install.
In the embodiment, the furnace lining brick 3 is prepared by selecting electric melting magnesia with different grain compositions, adding tartaric acid as an additive, adding a proper amount of water, stirring, molding, drying and firing. When the device is used, the furnace lining bricks 3 are installed to the position of the ladle slag line layer by layer through the hoisting device, every two furnace lining bricks 3 are tightly buckled and installed by the snap fastener 1, and the middle of the furnace lining bricks is bonded by high-alumina cement. When the furnace lining brick is arranged in more than two circles, rock wool is laid between the two circles to prevent the steel slag from corroding the steel ladle refractory material through gaps between the layers.
The utility model provides a used magnesia carbon brick of ladle slag line position install loaded down with trivial details problem to and the steel ladle refractory gap is big, shortens ladle life because of serious erosion easily, improves the back, and prefabricated furnace lining brick structure is simplified, the lock is inseparable, has prolonged the life of ladle, makes things convenient for the installation and the change of ladle slag line position furnace lining brick simultaneously, contains the carbon gauge height in the traditional magnesia carbon brick in addition, and the smelting inefficiency of steel, the low-carbon fused magnesia pouring material has promoted the smelting efficiency of steel.
The above-mentioned embodiments are only specific examples selected for the purpose of illustrating the objects, technical solutions and advantages of the present invention in detail, but should not limit the scope of the present invention, and all modifications, equivalent substitutions and improvements made without departing from the spirit and principles of the present invention should fall within the scope of the present invention.
Claims (8)
1. A furnace lining for a steel ladle slag line area is characterized in that the prefabricated furnace lining brick assembled furnace lining is arranged in the range of 1-2 meters of the steel ladle slag line area, at least one circle is arranged along the inner surface of a steel ladle, each circle is formed by splicing 4-6 furnace lining bricks, at least one pair of snap fasteners are arranged between every two adjacent furnace lining bricks, each snap fastener is of a pair of semi-cylindrical and semi-cylindrical groove fastening structures with matched sizes, and the axis of each semi-cylindrical is perpendicular to the ground.
2. The lining for the ladle slag line zone as recited in claim 1, wherein when the lining brick is provided in more than two rings, a rock wool layer is provided between the two rings.
3. The furnace lining for the ladle slag line zone according to claim 1, wherein the semi-cylindrical diameter is 100-150 mm.
4. The lining for the ladle slag line zone as recited in claim 1, wherein the outer surface and the inner surface of the lining brick are parallel to each other and form an angle of 80-85 ° with the ground.
5. A furnace lining for a ladle slag line zone according to any one of claims 1, 2 and 4, wherein the wall thickness of the furnace lining brick is 200-400 mm, and the snap fastener is arranged in the brick wall in the center.
6. The lining for the ladle slag line zone as recited in claim 5, wherein the lining brick is provided with at least two hoisting holes, the central axis of each hoisting hole is perpendicular to the ground, and the two hoisting holes are symmetrically arranged relative to the theoretical center of gravity of the lining brick.
7. The lining for the ladle slag line zone as recited in claim 6, wherein the lifting holes are 0.5 to 1m away from the theoretical gravity center line of the lining brick.
8. The lining for the ladle slag line zone according to claim 1, wherein the lining bricks are made of low-carbon fused magnesia castable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921312951.7U CN210632933U (en) | 2019-08-14 | 2019-08-14 | Furnace lining for ladle slag line area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921312951.7U CN210632933U (en) | 2019-08-14 | 2019-08-14 | Furnace lining for ladle slag line area |
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| Publication Number | Publication Date |
|---|---|
| CN210632933U true CN210632933U (en) | 2020-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921312951.7U Active CN210632933U (en) | 2019-08-14 | 2019-08-14 | Furnace lining for ladle slag line area |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114643351A (en) * | 2022-05-19 | 2022-06-21 | 河北纵横集团丰南钢铁有限公司 | Steel ladle for cleaning and transferring residual slag of weathering resistant steel liquid steel |
| CN115900349A (en) * | 2022-10-10 | 2023-04-04 | 高邮市锐意炉衬材料有限公司 | Wear-resisting high temperature resistant furnace lining of easy to maintain |
-
2019
- 2019-08-14 CN CN201921312951.7U patent/CN210632933U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114643351A (en) * | 2022-05-19 | 2022-06-21 | 河北纵横集团丰南钢铁有限公司 | Steel ladle for cleaning and transferring residual slag of weathering resistant steel liquid steel |
| CN114643351B (en) * | 2022-05-19 | 2022-07-22 | 河北纵横集团丰南钢铁有限公司 | Steel ladle for cleaning and transferring residual slag of weathering resistant steel liquid steel |
| CN115900349A (en) * | 2022-10-10 | 2023-04-04 | 高邮市锐意炉衬材料有限公司 | Wear-resisting high temperature resistant furnace lining of easy to maintain |
| CN115900349B (en) * | 2022-10-10 | 2023-09-19 | 高邮市锐意炉衬材料有限公司 | Wear-resisting high temperature resistant furnace lining of easy to maintain |
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