Furnace lining structure of converter bottom
By designing special masonry components and structures in the furnace lining structure of the converter furnace bottom, the multi-mold problem caused by inconsistent furnace lining sizes in the arc transition zone in the prior art is solved, and the number of bricks and the stability is reduced, which extends the service life of the furnace lining and reduces production costs.
Patent Information
- Application Number
- CN202420874722.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2025-05-20
- Estimated Expiration
- 2034-04-25
AI Technical Summary
During the production process of the working layer of the existing converter furnace bottom, multiple molds are required due to inconsistent dimensions, which increases the number of mold openings, reduces production efficiency and increases costs.
A furnace lining structure for converter furnace bottom is designed. By adding a working furnace bottom masonry, a first transition masonry, a connecting masonry and a second transition masonry between the permanent furnace bottom masonry and the inclined transition masonry, and through the special structure and layout of these components, the number of bricks and gaps are reduced and the stability is improved.
By reducing the number of bricks and clearance, the amount of ramming material is reduced, the stability and service life of the furnace lining is improved, and the production cost is reduced.
Smart Images
Figure CN222887501U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of metallurgical furnaces, and particularly relates to a lining structure of a converter bottom. Background Art
[0002] The converter bottom is mainly divided into two types: a flat-return turning bottom and a progressive flat-turning bottom. The progressive flat-turning bottom is composed of a bottom area, an arc transition area, and an adjusting brick area. The bottom area, the arc transition area, and the adjusting brick area are all provided with a lower permanent lining and an upper working lining, namely, a permanent lining of the bottom area, a working lining of the bottom area, a permanent lining of the arc transition area, a working lining of the arc transition area, a permanent lining of the adjusting brick area, and a working lining of the adjusting brick area. Due to the advantages of good integrity, effective decomposition of thermal stress in the bottom and molten pool areas, and extension of the service life of the converter, the progressive flat-turning bottom is widely used.
[0003] However, for the working linings of multiple arc transition areas in the existing special converter shell, neither the working surface (top plane) size nor the non-working surface (bottom plane) size can be made consistent. As a result, multiple molds are required for the production of the working linings of the arc transition areas, increasing the mold opening and leading to a decrease in production efficiency and an increase in cost.
[0004] Therefore, how to design a converter bottom lining structure with fewer brick types and more stable structure is an urgent problem to be solved by those skilled in the art. Content of the Utility Model
[0005] The utility model provides a lining structure of a converter bottom, which solves the technical problems of more brick types and poorer stability required for the lining of the existing converter bottom.
[0006] The technical solution of the utility model to solve the above technical problems is as follows: a lining structure of a converter bottom includes a permanent lining body. The interior of the converter is sequentially divided into a bottom section, an inclined transition section, and a furnace body section from bottom to top. The permanent lining body sequentially includes a permanently laid bottom laying part and an inclined transition laying part connected by masonry from bottom to top. The permanently laid bottom laying part is adaptively laid on the bottom section; the inclined transition laying part is adaptively laid on the inclined transition section; and it further includes: a working lining body.
[0007] The working furnace lining body sequentially includes, from bottom to top, a working furnace bottom masonry part, a first transition masonry part, a connecting masonry part, and a second transition masonry part, which are masonry-connected. The working furnace bottom masonry part is in the shape of a frustum of a cone with its bottom surface being the large-area end, and the large-area end of the working furnace bottom masonry part is adaptively masonry-laid on the top surface of the permanent furnace bottom masonry part. The first transition masonry part, the connecting masonry part, and the second transition masonry part are all in an annular structure, and the longitudinal sections of the first transition masonry part and the second transition masonry part are both arc surfaces protruding towards the outside of the converter. The longitudinal section of the connecting masonry part is an inclined surface that slopes outwards successively from bottom to top. The outer inclined surface of the connecting masonry part is adaptively masonry-laid on the inner inclined surface of the inclined transition masonry part to reduce the gap between the first transition masonry part, the connecting masonry part, the second transition masonry part, the permanent furnace bottom masonry part, and the inclined transition masonry part, and ramming material is filled in the gap.
[0008] The beneficial effects of the present utility model are as follows: First, the large-area end of the working furnace bottom masonry part is adaptively masonry-laid on the top surface of the permanent furnace bottom masonry part, and then the outer inclined surface of the connecting masonry part is masonry-laid on the inner inclined surface of the inclined transition masonry part. Since the working furnace bottom masonry part, the first transition masonry part, the connecting masonry part, and the second transition masonry part are successively masonry-connected from bottom to top, and since the longitudinal sections of the first transition masonry part and the second transition masonry part are both arc surfaces protruding towards the outside of the converter, the gap between the first transition masonry part, the connecting masonry part, the second transition masonry part, the permanent furnace bottom masonry part, and the inclined transition masonry part can be reduced, the addition amount of ramming material can be decreased, the stability of the furnace lining can be improved, and the service life of the furnace lining can be extended.
[0009] On the basis of the above technical solution, the present utility model can be further improved as follows.
[0010] Furthermore, the first transition masonry part and the second transition masonry part have the same structure and both include a plurality of first masonry ring bodies. The plurality of first masonry ring bodies are arranged successively from bottom to top, and the inner ring surface of the upper first masonry ring body is masonry-laid on the outer ring surface of the lower first masonry ring body. The inner ring surface of the first masonry ring body at the bottommost of the first transition masonry part is masonry-laid on the outer side surface of the working furnace bottom masonry part, and the outer ring surface of the first masonry ring body at the topmost of it is masonry-laid on the bottom surface of the connecting masonry part. The bottom surface of the first masonry ring body at the bottommost of the second transition masonry part is masonry-laid on the top surface of the connecting masonry part. The inner surface area of the first masonry ring body close to the center of the converter is smaller than its outer surface area far from the center of the converter, and both the outer surface and the inner surface are in an arc surface structure.
[0011] Further, each of the plurality of first masonry ring bodies includes a plurality of trapezoidal bricks. The small-area ends of the trapezoidal bricks are arranged close to the center of the converter, and the large-area ends thereof are arranged away from the center of the converter. The end faces of the small-area ends and the large-area ends of the trapezoidal bricks are both arc-shaped structures. The waist brick faces of two adjacent trapezoidal bricks in the circumferential direction of each first masonry ring body are mutually masoned.
[0012] The beneficial effect of the above further aspect is that the first masonry ring body is formed by mutually masoning the waist brick faces of two adjacent trapezoidal bricks. Since the sizes of the plurality of trapezoidal bricks are the same, the number of refractory brick types can be reduced, the mold opening data of the brick types can be lowered, and the masonry cost of the converter lining can be reduced.
[0013] Further, each of the plurality of trapezoidal bricks is an isosceles trapezoidal brick.
[0014] Further, the connecting masonry part includes a plurality of second masonry ring bodies that are sequentially masoned and connected from bottom to top. The bottom surface of the lowermost second masonry ring body is masoned on the top surface of the first masonry ring body at the topmost part of the first transition masonry part, and the top surface of the uppermost second masonry ring body is masoned on the bottom surface of the first masonry ring body at the lowermost part of the second transition masonry part.
[0015] Further, each of the plurality of second masonry ring bodies includes a plurality of rectangular bricks. The waist brick faces of two adjacent rectangular bricks in the circumferential direction of each second masonry ring body are mutually masoned.
[0016] The beneficial effect of the above further aspect is that the second masonry ring body is formed by mutually masoning the waist brick faces of two adjacent rectangular bricks, and an inclined surface that sequentially inclines outward from bottom to top can be formed outside the connecting masonry part, so as to be adapted to the inclined transition masonry part, and the gaps between the first transition masonry part, the connecting masonry part, the second transition masonry part, the permanent hearth masonry part and the inclined transition masonry part can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is an internal structure schematic diagram of a lining structure of a converter hearth of the present utility model;
[0018] Figure 2 is a three-dimensional structure schematic diagram of a lining structure of a converter hearth of the present utility model.
[0019] In the drawings, the list of components represented by each reference numeral is as follows:
[0020] 1. Working furnace lining body, 11. Working furnace bottom masonry part, 12. First transition masonry part, 13. Connecting masonry part, 14. Second transition masonry part, 15. First masonry ring body, 151. Trapezoidal brick, 16. Second masonry ring body, 161. Rectangular brick, 2. Permanent furnace lining body, 21. Permanent furnace bottom masonry part, 22. Inclined transition masonry part, 3. Converter, 31. Furnace bottom section, 32. Inclined transition section, 33. Furnace body section. Detailed implementation mode
[0021] The principles and features of the present utility model will be described below in conjunction with the accompanying drawings. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model.
[0022] As Figure 1 shown, a furnace lining structure of a converter furnace bottom includes a permanent furnace lining body 2. The interior of the converter 3 is sequentially divided into a furnace bottom section 31, an inclined transition section 32, and a furnace body section 33 from bottom to top. The permanent furnace lining body 2 sequentially includes a permanently masonry-connected permanent furnace bottom masonry part 21 and an inclined transition masonry part 22 from bottom to top. The permanent furnace bottom masonry part 21 is adaptively masonry on the furnace bottom section 31; the inclined transition masonry part 22 is adaptively masonry on the inclined transition section 32; it further includes: a working furnace lining body 1,
[0023] The working furnace lining body 1 sequentially includes a working furnace bottom masonry part 11, a first transition masonry part 12, a connecting masonry part 13, and a second transition masonry part 14 that are masonry-connected from bottom to top. The working furnace bottom masonry part 11 is a frustum of a cone structure and its bottom surface is the large-area end. The large-area end of the working furnace bottom masonry part 11 is adaptively masonry on the top surface of the permanent furnace bottom masonry part 21; the first transition masonry part 12, the connecting masonry part 13, and the second transition masonry part 14 are all annular structures and the longitudinal sections of the first transition masonry part 12 and the second transition masonry part 14 are both arc surfaces protruding outward from the converter 3. The longitudinal section of the connecting masonry part 13 is an inclined surface that is sequentially inclined outward from bottom to top. The outer inclined surface of the connecting masonry part 13 is adaptively masonry on the inner inclined surface of the inclined transition masonry part 22 to reduce the gap between the first transition masonry part 12, the connecting masonry part 13, the second transition masonry part 14, the permanent furnace bottom masonry part 21, and the inclined transition masonry part 22. The gap is filled with ramming material.
[0024] In some specific embodiments, the first transition masonry part 12 and the second transition masonry part 14 have the same structure and both may include a plurality of first masonry rings 15. The plurality of first masonry rings 15 are arranged in sequence from bottom to top, and the inner circumferential surface of the upper first masonry ring 15 is masoned on the outer circumferential surface of the lower first masonry ring 15. The inner circumferential surface of the first masonry ring 15 at the bottommost part of the first transition masonry part 12 is masoned on the outer side surface of the working furnace bottom masonry part 11, and the outer circumferential surface of the first masonry ring 15 at the topmost part thereof is masoned on the bottom surface of the connecting masonry part 13; the bottom surface of the first masonry ring 15 at the bottommost part of the second transition masonry part 14 is masoned on the top surface of the connecting masonry part 13; the inner surface area of the first masonry ring 15 close to the center of the converter 3 is smaller than its outer surface area far from the center of the converter 3, and both the outer surface and the inner surface are arc surface structures.
[0025] In some specific embodiments, each of the plurality of first masonry rings 15 may include a plurality of trapezoidal bricks 151. The small area ends of the trapezoidal bricks 151 are arranged close to the center of the converter 3, and their large area ends are arranged far from the center of the converter 3. The end faces of the small area ends and the large area ends of the trapezoidal bricks 151 are both arc surface structures, and the waist brick surfaces of two adjacent trapezoidal bricks 151 in the circumferential direction of each first masonry ring 15 are masoned with each other.
[0026] In some specific embodiments, the plurality of trapezoidal bricks 151 may all be isosceles trapezoidal bricks.
[0027] In some specific embodiments, the connecting masonry part 13 may include a plurality of second masonry rings 16 that are successively masoned and connected from bottom to top. The bottom surface of the lowermost second masonry ring 16 is masoned on the top surface of the first masonry ring 15 at the topmost part of the first transition masonry part 12, and the top surface of the uppermost second masonry ring 16 is masoned on the bottom surface of the first masonry ring 15 at the lowermost part of the second transition masonry part 14.
[0028] In some specific embodiments, each of the plurality of second masonry rings 16 may include a plurality of rectangular bricks 161, and the waist brick surfaces of two adjacent rectangular bricks 161 in the circumferential direction of each second masonry ring 16 are masoned with each other.
[0029] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A lining structure of a converter furnace bottom, comprising a permanent lining body (2), wherein the interior of the converter (3) is divided into a furnace bottom section (31), an inclined transition section (32) and a furnace body section (33) from bottom to top, wherein the permanent lining body (2) comprises a permanent furnace bottom masonry portion (21) and an inclined transition masonry portion (22) connected by masonry from bottom to top, wherein the permanent furnace bottom masonry portion (21) is adapted to be masonry-built on the furnace bottom section (31); and the inclined transition masonry portion (22) is adapted to be masonry-built on the inclined transition section (32); wherein the permanent furnace bottom masonry portion (21) is adapted to be masonry-built on the furnace bottom section (31); and the inclined transition masonry portion (22) is adapted to be masonry-built on the inclined transition section (32); wherein the permanent furnace bottom masonry portion (21) is adapted to be masonry-built on the inclined transition section (32); and ... It also includes: a working furnace lining body (1), The working furnace lining body (1) comprises, from bottom to top, a working furnace bottom masonry portion (11), a first transition masonry portion (12), a connecting masonry portion (13) and a second transition masonry portion (14) connected by masonry. The working furnace bottom masonry portion (11) is a truncated cone structure and its bottom surface is a large-area end. The large-area end of the working furnace bottom masonry portion (11) is adapted to be masonried on the top surface of the permanent furnace bottom masonry portion (21). The first transition masonry portion (12), the connecting masonry portion (13) and the second transition masonry portion (14) are all annular structures and the first transition masonry portion (11) is a cylindrical structure. 2) and the second transition masonry part (14) are both arc surfaces protruding toward the outside of the converter (3), and the longitudinal section of the connecting masonry part (13) is an inclined surface that is inclined outward from bottom to top, and the outer inclined surface of the connecting masonry part (13) is adapted to be masonried on the inner inclined surface of the inclined transition masonry part (22) to narrow the gap between the first transition masonry part (12), the connecting masonry part (13), the second transition masonry part (14), the permanent furnace bottom masonry part (21) and the inclined transition masonry part (22), and the gap is filled with ramming material.
2. The lining structure of a converter bottom according to claim 1, characterized in that: The first transition masonry part (12) and the second transition masonry part (14) have the same structure and both include a plurality of first masonry ring bodies (15), the plurality of first masonry ring bodies (15) are arranged in sequence from bottom to top and the inner ring surface of the upper first masonry ring body (15) is built on the outer ring surface of the lower first masonry ring body (15), the inner ring surface of the first masonry ring body (15) at the bottom of the first transition masonry part (12) is built on the outer side surface of the working furnace bottom masonry part (11) and the outer ring surface of the first masonry ring body (15) at the top is built on the bottom surface of the connecting masonry part (13); the bottom surface of the first masonry ring body (15) at the bottom of the second transition masonry part (14) is built on the top surface of the connecting masonry part (13); the inner surface area of the first masonry ring body (15) close to the center of the converter (3) is smaller than the outer surface area of the first masonry ring body (15) away from the center of the converter (3), and both the outer and inner surfaces are arc structures.
3. The lining structure of the converter bottom according to claim 2, characterized in that: The plurality of first masonry ring bodies (15) each comprise a plurality of trapezoidal bricks (151), the small-area ends of the trapezoidal bricks (151) being arranged close to the center of the converter (3) and the large-area ends of the trapezoidal bricks (151) being arranged away from the center of the converter (3), the small-area end faces and the large-area end faces of the trapezoidal bricks (151) both being arc-shaped structures, and the waist brick surfaces of two circumferentially adjacent trapezoidal bricks (151) of each first masonry ring body (15) being masonry-bonded to each other.
4. The lining structure of a converter bottom according to claim 3, characterized in that: The plurality of trapezoidal bricks (151) are all isosceles trapezoidal bricks.
5. The lining structure of a converter bottom according to claim 2, characterized in that: The connecting masonry part (13) comprises a plurality of second masonry circles (16) which are sequentially masonried and connected from bottom to top, wherein the bottom surface of the lowest second masonry circle (16) is masonried on the top surface of the first masonry circle (15) at the top of the first transition masonry part (12), and the top surface of the highest second masonry circle (16) is masonried on the bottom surface of the lowest first masonry circle (15) at the second transition masonry part (14).
6. The lining structure of the converter bottom according to claim 5, characterized in that: The plurality of second masonry ring bodies (16) each comprises a plurality of rectangular bricks (161), and the waist brick surfaces of two circumferentially adjacent rectangular bricks (161) of each second masonry ring body (16) are laid against each other.