CN219546999U - Converter structure for iron and steel smelting - Google Patents

Converter structure for iron and steel smelting Download PDF

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Publication number
CN219546999U
CN219546999U CN202320832399.4U CN202320832399U CN219546999U CN 219546999 U CN219546999 U CN 219546999U CN 202320832399 U CN202320832399 U CN 202320832399U CN 219546999 U CN219546999 U CN 219546999U
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China
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furnace
brick
layers
bricks
steel smelting
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CN202320832399.4U
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苏醒
钟飞
方炜
张菊根
郭文波
黄文欢
陈连军
彭丹
徐志钢
汪敏
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Xinyu Iron and Steel Co Ltd
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Xinyu Iron and Steel Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

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Abstract

The utility model belongs to a steel smelting converter structure in the technical field of steel smelting. The bottom of the furnace body (1) is of a concave arc-shaped structure, a plurality of permanent layers (2) are arranged at the bottom of the furnace body (1), a plurality of annular backing masonry layers (3) are arranged on the permanent layers (2), the permanent layers (2) and the backing masonry layers (3) form a furnace bottom arc line (5) of the arc-shaped structure, a plurality of furnace bottom bricks (6) are arranged on the permanent layers (2), the plurality of furnace bottom bricks (6) are arranged in a fitting mode, each furnace bottom brick (6) is perpendicular to the furnace bottom arc line (5) respectively, a thin-sheet magnesia brick (11) is arranged in a gap between the backing masonry layers (3) and the turning brick (7), and a magnesia brick (12) is arranged in a gap between the working layer (4) and the furnace body (1). The steel smelting converter structure can disperse stress on the joint of the furnace bottom and the furnace body, relatively balance corrosion, avoid steel penetration at the joint, improve metallurgical effect and improve the strength of the furnace body.

Description

Converter structure for iron and steel smelting
Technical Field
The utility model belongs to the technical field of steel smelting, and particularly relates to a steel smelting converter structure.
Background
In the prior art, the converter type is cylindrical spherical, the joint of the converter bottom and the converter body basically has right angle transition, firstly, the joint is subjected to concentrated flushing stress of molten steel, the corrosion damage is serious and difficult to maintain compared with other parts, and the lifting of the service life of the converter is limited; secondly, the molten metal is easy to generate dead angle, oxygen jet stirring is not carried out under the same condition, the full reaction of a steel slag interface is limited, harmful substances in the molten metal are difficult to effectively remove, and uneven components are easy to cause; further, the diameter of the existing furnace mouth is smaller, so that smooth feeding of scrap steel is often disadvantageous, particularly, problems are more prominent when the ratio of iron to steel is reduced, and restrictions on production rhythm are more obvious. Accordingly, there is a need for improvement in the art.
In the prior art, there is a masonry structure for preventing a bottom brick from falling off of a detachable furnace bottom converter, and a technology disclosed as 207483779U, which comprises a furnace bottom shell and a furnace body shell, wherein the furnace bottom shell is provided with a detachable furnace bottom, the furnace bottom shell and the furnace body shell are provided with permanent layers, a furnace bottom working lining is arranged above the permanent layers of the detachable furnace bottom, and the permanent layers of the furnace body shell are provided with furnace body working lining, and the technology is characterized in that: the furnace bottom working lining is a spherical furnace bottom built by wedge-shaped bricks of the furnace bottom; a joint material is arranged between the furnace bottom working lining and the furnace body working lining, a circle of brick bodies with inserting ports are arranged at the highest points of the furnace body working lining corresponding to the furnace bottom working lining, and a joint pressing brick which is connected with the inserting ports of the brick bodies in a matched mode is arranged above the joint material. However, this technique does not relate to the technical problem and technical solution of the present utility model.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: the steel smelting converter structure has the advantages that the structure is simple, the stress born by the joint of the furnace bottom and the furnace body can be dispersed, the corrosion is relatively balanced, steel penetration at the joint is avoided, the metallurgical effect is improved, and the strength of the furnace body is effectively improved.
The technical scheme adopted by the utility model is as follows:
the utility model relates to a steel smelting converter structure, wherein the bottom of a furnace body is of a concave arc structure, a plurality of permanent layers are arranged at the bottom of the furnace body, a plurality of annular withdrawal masonry layers are arranged on the permanent layers, the permanent layers and the withdrawal masonry layers form a furnace bottom arc line of the arc structure, a plurality of furnace bottom bricks are arranged on the permanent layers, the plurality of furnace bottom bricks are arranged in a laminating way, each furnace bottom brick is respectively perpendicular to the furnace bottom arc line, turning-over bricks are arranged on the side surfaces of the furnace bottom bricks, and a working layer is arranged on the turning-over bricks. The gap between the bench-backing masonry layer and the furnace body is provided with thin-piece magnesite bricks. And a gap between the working layer and the furnace body is provided with magnesia bricks.
The hearth bricks and the turning-over bricks form an arc furnace bottom with a concave arc structure.
The working layer is provided with a plurality of layers, and the upper part of the working layer is provided with a furnace cap layer.
The section of the turning brick is in a trapezoid structure, the turning brick positioned at the lowest part is attached to the bottom brick, and the upper surface of the turning brick positioned at the highest part is in a horizontal state.
The furnace cap layer is arranged into a structure made of a plurality of furnace cap bricks.
The furnace cap layer is bell mouth-shaped, and the diameter size of the upper end port of the furnace cap layer is smaller than that of the lower end port.
The working layer is arranged into an annular structure consisting of a plurality of working bricks.
The working bricks of the working layer are arranged in a stacked manner from bottom to top.
By adopting the technical scheme of the utility model, the working principle and the beneficial effects are as follows:
according to the steel smelting converter structure, the performance is improved through structural improvement on various aspects of the smelting converter. Because of the use of the thin-sheet magnesia bricks, the use amount of the filling material is greatly reduced, and the thin-sheet magnesia bricks improve the furnace bottom strength and have better compactness. The bottom of the furnace body is provided with a plurality of permanent layers, a plurality of annular withdrawal masonry layers are arranged on the permanent layers, the permanent layers and the withdrawal masonry layers form a furnace bottom arc line with an arc structure, a plurality of furnace bottom bricks are arranged on the permanent layers, the furnace bottom bricks are attached and arranged, each furnace bottom brick is respectively perpendicular to the furnace bottom arc line, the structure is provided with a furnace bottom with reliable structure, the inside of the furnace bottom is connected with the furnace body to be changed into arc transition, steel penetrating accidents are effectively avoided at joints, stirring of molten metal in a molten pool does not have dead angles, circulation of the molten metal is better, reaction is more complete, and the dephosphorization rate of the end point is improved by 3-5% under the same condition before transformation.
Drawings
The following is a brief description of what is expressed in the drawings of this specification and the references in the drawings:
FIG. 1 is a schematic structural view of a steel smelting converter according to the present utility model;
the reference numerals in the figures are respectively: 1. a furnace body; 2. a permanent layer; 3. removing the building layer; 4. a working layer; 5. a furnace bottom arc; 6. a bottom brick; 7. turning over bricks; 8. a furnace cap layer; 9. an arc furnace bottom; 11. thin magnesium bricks; 12. furnace crown bricks; 13. a working brick; 14. an upper port; 15. a lower end port; 16. magnesia brick.
Detailed Description
The following describes the shape, structure, mutual position and connection relation between parts, action of parts and working principle of the specific embodiment of the present utility model by describing examples in further detail:
as shown in figure 1, the utility model is a steel smelting converter structure, the bottom of a furnace body 1 is of a concave arc structure, a plurality of permanent layers 2 are arranged at the bottom of the furnace body 1, a plurality of annular withdrawal masonry layers 3 are arranged on the permanent layers 2, the permanent layers 2 and the withdrawal masonry layers 3 form a furnace bottom arc line 5 of the arc structure, a plurality of furnace bottom bricks 6 are arranged on the permanent layers 2, the plurality of furnace bottom bricks 6 are in joint arrangement, and each furnace bottom brick 6 is respectively perpendicular to the furnace bottom arc line 5. The gap between the bench-backing masonry layer 3 and the turning brick 3 is provided with a thin-sheet magnesia brick 11. The gap between the working layer 4 and the furnace body 1 is provided with magnesia bricks 16. The structure provides an improved technical scheme aiming at the defects in the prior art. After the structure is improved, the usage amount of the filling material is greatly reduced due to the use of the thin-sheet magnesia bricks, and the thin-sheet magnesia bricks enable the furnace bottom strength to be improved and the compactness to be better. The bottom of the furnace body 1 is provided with a plurality of permanent layers 2, a plurality of annular withdrawal masonry layers 3 are arranged on the permanent layers 2, the permanent layers 2 and the withdrawal masonry layers 3 form a furnace bottom arc line 5 with an arc structure, a plurality of furnace bottom bricks 6 are arranged on the permanent layers 2, the furnace bottom bricks 6 are in fit arrangement, each furnace bottom brick 6 is respectively perpendicular to the furnace bottom arc line 5, the structure forms a furnace bottom with reliable structure, the connection part between the inside of the furnace bottom and the furnace body 1 is changed into arc transition, steel penetrating accidents are effectively avoided at the connection part, the stirring of molten metal in a molten pool is free from dead angle, the circulation of molten metal is better and the reaction is more complete, and under the same condition, the terminal dephosphorization rate is improved by 3-5% compared with that before transformation. The steel smelting converter structure has a simple structure, can disperse stress on the joint of the furnace bottom and the furnace body, relatively balance corrosion, avoid steel penetration at the joint, improve metallurgical effect and improve the strength of the furnace body.
The side face of the hearth brick 6 is provided with a turning brick 7, and the turning brick 7 is provided with a working layer 4. Above-mentioned structure stands up brick 7 and regard as the transition between stove bottom and the furnace body, the use of a plurality of brick 7 stands up for stove bottom and furnace body seam crossing are arc structure, effectively solve the problem when current structure is smelted, and the top is standing up the brick upper surface and is horizontal structure, thereby can reliably place the working brick.
The hearth brick 6 and the turning brick 7 form an arc furnace bottom 9 with a concave arc structure. The structure forms the furnace bottom with reliable structure, the junction between the inside of the furnace bottom and the furnace body is changed into arc transition, the junction effectively avoids steel passing accidents in the smelting process, and the stirring of molten metal in a molten pool has no dead angle, so that the circulation of the molten metal is better and the reaction is more complete.
The working layer 4 is provided with a plurality of layers, and the upper part of the working layer 4 is provided with a furnace cap layer 8. The furnace cap layer 8 is provided with a structure made of a plurality of furnace cap bricks 12. The furnace cap layer 8 is bell mouth-shaped, and the diameter size of the upper end port 14 of the furnace cap layer 8 is smaller than that of the lower end port 15. With the structure, the furnace cap layer forms a structure with gradually reduced caliber upwards, so that molten metal can enter conveniently.
The section of the turning brick 7 is in a trapezoid structure, the turning brick 7 positioned at the lowest part is attached to the bottom brick 6, and the upper surface of the turning brick 7 positioned at the highest part is in a horizontal state. The turnover bricks are effectively arranged between the hearth bricks and the working bricks, so that reliable transition is realized, and the joint part of the hearth and the furnace body is of an arc transition structure. The working layer 4 is arranged into a ring-shaped structure consisting of a plurality of working bricks 13. The working bricks 13 of the working layer 4 are arranged in a stacking way from bottom to top.
According to the steel smelting converter structure, the performance is improved through structural improvement on various aspects of the smelting converter. Because of the use of the thin-sheet magnesia bricks, the use amount of the filling material is greatly reduced, and the thin-sheet magnesia bricks improve the furnace bottom strength and have better compactness. A plurality of permanent layers are arranged at the bottom of the furnace body, a plurality of annular withdrawal masonry layers are arranged on the permanent layers, an arc-shaped furnace bottom arc line is formed by the permanent layers and the withdrawal masonry layers, a plurality of furnace bottom bricks are arranged on the permanent layers, the plurality of furnace bottom bricks are arranged in a laminating way, each furnace bottom brick is perpendicular to the furnace bottom arc line, the structure is formed, a reliable furnace bottom is formed, the joint between the inner part of the furnace bottom and the furnace body is changed into arc transition, steel penetrating accidents are effectively avoided at the joint, no dead angle exists in stirring of molten metal in a molten pool, the circulation of the molten metal is better, the reaction is more complete, and the dephosphorization rate of the end point is improved by 3-5% under the same condition before transformation.
While the utility model has been described above with reference to the accompanying drawings, it will be apparent that the specific implementation of the utility model is not limited by the foregoing, but rather is within the scope of the utility model as long as various modifications are made by the method concept and technical scheme of the utility model, or the concept and technical scheme of the utility model are directly applied to other occasions without modification.

Claims (10)

1. A converter structure for iron and steel smelting, characterized in that: the bottom of the furnace body (1) is of a concave arc-shaped structure, a plurality of permanent layers (2) are arranged at the bottom of the furnace body (1), a plurality of annular backing masonry layers (3) are arranged on the permanent layers (2), the permanent layers (2) and the backing masonry layers (3) form a furnace bottom arc line (5) of the arc-shaped structure, a plurality of furnace bottom bricks (6) are arranged on the permanent layers (2), the plurality of furnace bottom bricks (6) are arranged in a fitting mode, each furnace bottom brick (6) is perpendicular to the furnace bottom arc line (5) respectively, and a thin-sheet magnesia brick (11) is arranged in a gap between the backing masonry layers (3) and the turning brick (7).
2. The steel smelting converter structure of claim 1, wherein: the side face of the hearth brick (6) is provided with a turning brick (7), and the turning brick (7) is provided with a working layer (4).
3. The steel smelting furnace structure according to claim 1 or 2, wherein: the hearth brick (6) and the turning brick (7) form an arc furnace bottom (9) with a concave arc structure.
4. The steel smelting converter structure of claim 2, wherein: the working layer (4) is provided with a plurality of layers, and the upper part of the working layer (4) is provided with a furnace cap layer (8).
5. The steel smelting furnace structure according to claim 1 or 2, wherein: the section of the turning brick (7) is in a trapezoid structure, one turning brick (7) positioned at the lowest part is attached to the bottom brick (6), and the upper surface of the turning brick (7) positioned at the highest part is in a horizontal state.
6. The steel smelting furnace structure according to claim 4, wherein: the furnace cap layer (8) is of a structure made of a plurality of furnace cap bricks (12).
7. The steel smelting furnace structure according to claim 4, wherein: the furnace cap layer (8) is in a horn mouth shape, and the diameter size of an upper end port (14) of the furnace cap layer (8) is smaller than that of a lower end port (15).
8. The steel smelting converter structure of claim 2, wherein: the working layer (4) is arranged into an annular structure consisting of a plurality of working bricks (13).
9. The steel smelting furnace structure according to claim 8, wherein: the working bricks (13) of the working layer (4) are arranged in a stacked manner from bottom to top.
10. The steel smelting furnace structure according to claim 4, wherein: the gap between the working layer (4) and the furnace body (1) is provided with magnesia bricks.
CN202320832399.4U 2023-04-14 2023-04-14 Converter structure for iron and steel smelting Active CN219546999U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320832399.4U CN219546999U (en) 2023-04-14 2023-04-14 Converter structure for iron and steel smelting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320832399.4U CN219546999U (en) 2023-04-14 2023-04-14 Converter structure for iron and steel smelting

Publications (1)

Publication Number Publication Date
CN219546999U true CN219546999U (en) 2023-08-18

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ID=87706540

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202320832399.4U Active CN219546999U (en) 2023-04-14 2023-04-14 Converter structure for iron and steel smelting

Country Status (1)

Country Link
CN (1) CN219546999U (en)

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