A converter tapping hole lining structure
By using a variable-diameter steel outlet masonry structure, the size difference between the steel outlet seat brick and the sleeve brick is utilized to enhance the binding force, thus solving the problem of the split sleeve brick falling off and improving the stability and service life of the steel outlet area.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANGANG VESUVIUS REFRACTORY CO LTD
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-10
Smart Images
Figure CN224478102U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the iron and steel smelting industry, specifically to the field of refractory lining in steelmaking converters, and particularly to a lining structure for the taphole of a converter. Background Technology
[0002] Converter steelmaking is a common steelmaking method used by steel companies. Its main function is to smelt iron by reacting with elements such as carbon, silicon, manganese, and phosphorus in the molten iron, without the need for external heating equipment, thus achieving the smelting goals of temperature increase and tempering. As a key piece of equipment in the converter steelmaking process, how to improve the service life of the converter, increase production efficiency, and reduce production input has become a common goal pursued by major steel companies and refractory material suppliers. Although major steel companies now regard improving quality, reducing consumption, and increasing efficiency as the main tasks of their business operations, safety and stability remain the prerequisites for business operations.
[0003] Currently, the commonly used design for converter tapholes is a combination of equal-diameter taphole seat bricks and equal-diameter split-type taphole sleeve bricks (see...). Figure 1 , Figure 2 The space between the tapping sleeve brick 5 and the tapping seat brick 1 is filled and compacted with rammed loose material or self-flowing loose material (sintered loose material 3), and fixed by sintering at the converter furnace temperature. However, actual use has revealed that the current masonry method, combined with the split tapping sleeve brick, still has drawbacks.
[0004] Split-type steel outlet sleeve brick (see...) Figure 3 ) Relative to integral bushing (see Figure 4 Due to the advantages of its forming method, it has relatively high bulk density and strength, and better resistance to erosion and scouring under the same usage environment, which is more conducive to improving service life. However, due to the many connecting surfaces of the split structure, its stability is poor, and it is easy to experience local separation and detachment during use, especially at the inlet end of the molten steel and the outlet end of the molten steel, which poses a hidden danger to the safe operation of converter steelmaking. Utility Model Content
[0005] To address the aforementioned issues, this utility model provides a converter tapping spout masonry structure that transforms the traditional equal-diameter tapping spout masonry pattern into a variable-diameter pattern. By utilizing the dimensional difference, the mutual binding force between the tapping spout seat brick and the sleeve brick is enhanced, thereby improving operational stability.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A converter taphole lining structure includes a taphole seat brick and a taphole sleeve brick. The taphole sleeve bricks are interlocked with each other to form a taphole sleeve. The taphole sleeve is lining inside the taphole seat brick, and the space between the taphole sleeve and the taphole seat brick is filled with adhesive material. The taphole sleeve includes an inner furnace section, a middle section, and an outer furnace section. The taphole sleeve bricks used to lining the middle section have the same outer diameter. The outer diameter of each taphole sleeve brick used to lining the inner furnace section is smaller towards the inner furnace than towards the outer furnace. The outer diameter of each taphole sleeve brick used to lining the outer furnace section is larger towards the inner furnace than towards the outer furnace.
[0008] Furthermore, the inner hole of each of the aforementioned tapping hole bricks is conical, with the inner diameter on the inner side of the furnace being smaller than the inner diameter on the outer side of the furnace.
[0009] Furthermore, the inner diameter of the tapping hole seat brick facing inwards from the furnace is 10-20 mm smaller than its inner diameter facing outwards from the furnace.
[0010] Furthermore, the outer diameter of the taphole sleeve brick used to construct the inner section of the furnace is 10-15 mm smaller towards the inside of the furnace than towards the outside of the furnace.
[0011] Furthermore, the outer diameter of the outlet sleeve bricks used to construct the outer section of the furnace is 10-15 mm larger towards the inside of the furnace than towards the outside of the furnace.
[0012] Furthermore, 2-3 bricks are used to construct the steel outlet sleeve of the outer section of the furnace.
[0013] Furthermore, 2-3 bricks are used to construct the taphole sleeve of the inner side section of the furnace.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] This utility model provides a converter tapping spout masonry structure, which changes the traditional equal-diameter tapping spout masonry pattern to a variable-diameter pattern. By utilizing the size difference, the mutual binding force between the tapping spout seat brick and the sleeve brick is enhanced, thereby improving the stability of use.
[0016] In this invention, the outer diameter of the taphole sleeve brick used for lining the inner section of the furnace is smaller towards the inner side than towards the outer side, forming a dimensional misalignment with the taphole seat brick, creating opposing binding forces, effectively resisting the impact of molten steel, and making the inner structure of the taphole more stable. Attached Figure Description
[0017] Figure 1 A schematic diagram (I) of the structure of the tapping refractory materials for converter tapping, in which the tapping seat bricks and sleeves are generally constructed using the same diameter masonry method.
[0018] Figure 2The structural diagram (II) shows that the tapping refractory materials commonly used in existing technologies employ a uniform diameter masonry method for both the tapping slab and the sleeve.
[0019] Figure 3 This is a structural diagram of the split-type equal-diameter design used in the existing technology of converter taphole sleeves.
[0020] Figure 4 This is a structural diagram of the integral equal-diameter design used in the existing technology for converter taphole sleeves.
[0021] Figure 5 A schematic diagram (I) of the converter tapping outlet seat brick and sleeve of this utility model with a variable diameter design.
[0022] Figure 6 Schematic diagram (II) of the converter tapping outlet seat brick and sleeve of this utility model with a variable diameter design.
[0023] Figure 7 This is a schematic diagram of the assembly of the split-type steel outlet sleeve in this utility model.
[0024] In the figure: 1-Tap outlet seat brick, 2-Tap outlet sleeve, 3-Sintering bulk material, 4-Mother and daughter outlet connection surface, 5-Tap outlet sleeve brick, 6-Inner section of furnace, 7-Middle section, 8-Outer section of furnace. Detailed Implementation
[0025] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings:
[0026] See Figures 5-7 A converter tapping spout masonry structure includes a tapping spout seat brick 1 and a tapping spout sleeve brick 5. The tapping spout sleeve bricks 5 are interlocked with each other to form a tapping spout sleeve 2. The tapping spout sleeve 2 is built inside the tapping spout seat brick 1. The space between the tapping spout sleeve 2 and the tapping spout seat brick 1 is filled with adhesive material 3. The tapping spout sleeve 2 includes an inner furnace section 6, a middle section 7, and an outer furnace section 8. The tapping spout sleeve bricks 5 used to build the middle section 7 have the same outer diameter. The outer diameter of each tapping spout sleeve brick 5 used to build the inner furnace section 6 is smaller than its outer diameter towards the furnace. The outer diameter of each tapping spout sleeve brick 5 used to build the outer furnace section 8 is larger than its outer diameter towards the furnace.
[0027] Furthermore, the inner hole of each of the steel tapping seat bricks 1 is conical, with the inner diameter on the inner side of the furnace being smaller than the inner diameter on the outer side of the furnace.
[0028] Furthermore, the inner diameter of the tapping hole seat brick 1 facing inward toward the furnace is 10-20 mm smaller than the inner diameter facing outward toward the furnace.
[0029] Furthermore, the outer diameter of the steel outlet sleeve brick 5 used to build the inner section 6 of the furnace is 10-15 mm smaller towards the inner side of the furnace than towards the outer side of the furnace.
[0030] Furthermore, the outer diameter of the steel outlet sleeve brick 5 used to construct the outer section 8 of the furnace is 10-15 mm larger towards the inside of the furnace than towards the outside of the furnace.
[0031] Furthermore, there are 2-3 steel outlet sleeve bricks 5 used for lining the outer section 8 of the furnace.
[0032] Furthermore, there are 2-3 steel outlet sleeve bricks 5 used for lining the inner side section 6 of the furnace.
[0033] Example 1:
[0034] The original equal-diameter tap hole seat brick 1 is designed so that the outer diameter A1 of the furnace is 15mm smaller than the inner diameter A2 of the furnace. The main purpose of this design is to enhance the fixing effect of the filling and bonding bulk material 3 and the tap hole sleeve brick 5 by creating a size difference in the inner diameter. At the same time, the inner diameter of the tap hole seat brick 1 is smaller on the outside and larger on the inside, which is more conducive to avoiding damage by the drilling machine when replacing the tap hole sleeve 5.
[0035] The outer diameter of the three outer sections of the original equal-diameter taphole sleeve brick 5 is designed such that the outer diameter B1 is 12mm smaller than the inner diameter B2; the outer diameter of the three inner sections is designed such that the inner diameter B3 is 12mm smaller than the outer diameter B4. The main purpose of this design is to enhance the fixing effect between the two ends of the taphole sleeve brick 5 and the taphole seat brick 1 by utilizing the design dimensional difference, thereby enhancing the overall structural stability of the refractory material in the converter taphole area, preventing local separation and detachment of the sleeve bricks during use, and steadily improving service life.
Claims
1. A converter taphole masonry structure, comprising taphole seat bricks and taphole sleeve bricks, wherein the taphole sleeve bricks are interlocked with interlocking grooves to form a taphole sleeve, the taphole sleeve is constructed inside the taphole seat bricks, and sintered bulk material is filled between the taphole sleeve and the taphole seat bricks, characterized in that... The tapping sleeve includes an inner section, a middle section, and an outer section. The tapping sleeve bricks used to build the middle section have the same outer diameter. The outer diameter of each tapping sleeve brick used to build the inner section is smaller towards the inner side of the furnace than towards the outer side. The outer diameter of each tapping sleeve brick used to build the outer section is larger towards the inner side of the furnace than towards the outer side.
2. The converter taphole masonry structure according to claim 1, characterized in that, The inner hole of each of the aforementioned tapping hole bricks is conical, with the inner diameter on the inner side of the furnace being smaller than the inner diameter on the outer side of the furnace.
3. The converter taphole masonry structure according to claim 2, characterized in that, The inner diameter of the tapping hole seat brick facing inward is 10-20 mm smaller than the inner diameter facing outward.
4. The converter taphole masonry structure according to claim 1, characterized in that, The outer diameter of the taphole sleeve bricks used for lining the inner section of the furnace is 10-15 mm smaller towards the inside of the furnace than towards the outside of the furnace.
5. The converter taphole masonry structure according to claim 1, characterized in that, The outer diameter of the outlet sleeve bricks used for lining the outer section of the furnace is 10-15 mm larger towards the inside of the furnace than towards the outside.
6. The converter taphole masonry structure according to claim 1, characterized in that, Two to three bricks are used to construct the steel outlet sleeve of the outer section of the furnace.
7. The converter taphole masonry structure according to claim 1, characterized in that, Two to three bricks are used to construct the taphole sleeve of the inner side section of the furnace.