A furnace lining structure

Abstract

This utility model discloses a furnace lining structure, comprising a heat storage outer lining, a refractory brick lining, and an inner lining. The refractory brick lining is located between and fixedly connected to the heat storage outer lining and the inner lining. The heat storage outer lining includes a stearic acid lining, a bentonite nanocomposite lining, and a frustum-shaped connecting portion. The top of the frustum-shaped connecting portion is connected to the stearic acid lining and the bentonite nanocomposite lining, and the bentonite nanocomposite lining is fitted inside the stearic acid lining. By setting the heat storage outer lining to include a stearic acid lining, a bentonite nanocomposite lining, and a frustum-shaped connecting portion, with the top of the frustum-shaped connecting portion connected to the stearic acid lining and the bentonite nanocomposite lining, and the bentonite nanocomposite lining fitted inside the stearic acid lining, this utility model ensures the heat storage density and stability of the entire white corundum smelting furnace, reduces heat loss during heat storage, and lowers energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of smelting furnace technology, and in particular to a furnace lining structure and its white corundum smelting furnace. Background Technology

[0002] The smelting furnace is an essential piece of equipment in the smelting process of white corundum. The furnace lining is usually composed of an insulation layer, refractory bricks and a refractory composite coating. Due to the many joints in the refractory bricks, the overall mechanical strength of the furnace lining is poor. Moreover, the refractory bricks are in a state of alternating high and low temperatures for a long time. Thermal expansion and contraction cause the refractory bricks to generate great stress, which leads to cracking of the refractory bricks. They are not easy to replace, and the refractory coating on the inner wall is easy to peel off.

[0003] For example, patent application CN202121637661.7 discloses a composite energy-saving furnace lining for a white corundum smelting furnace, including a furnace shell. Multiple recessed platforms are provided on the outer surface of the furnace shell. A first through hole is provided on the side of each platform away from the outer surface of the furnace shell, extending to the inner surface of the side wall of the furnace shell. A bolt is inserted through the first through hole. An insulation layer is provided on the inner side of the furnace shell, and an installation plate is provided on the inner side of the insulation layer. The installation plate has multiple threaded holes, which are threadedly connected to the bolts. A grid frame is fixedly connected to the inner side of the installation plate, and a pad is fixedly connected to the inner side of the grid frame. In this design, the stress generated by the thermal expansion and contraction of the refractory bricks is distributed on each transverse and vertical partition, thereby enhancing the overall mechanical strength of the refractory bricks, preventing cracking due to thermal expansion and contraction, which could lead to the peeling of the refractory coating. Furthermore, the refractory bricks are easy to disassemble and replace.

[0004] The disadvantages of the furnace lining disclosed above are that the heat loss during the heat storage process is large, the energy consumption is increased, and it is not conducive to energy conservation and environmental protection. To this end, we designed a furnace lining structure and its white corundum smelting furnace. Utility Model Content

[0005] The purpose of this invention is to provide a furnace lining structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a furnace lining structure, the furnace lining structure comprising a heat storage outer lining, a refractory brick lining, and an inner lining, the refractory brick lining being located between the heat storage outer lining and the inner lining and being fixedly connected to the heat storage outer lining and the inner lining, the heat storage outer lining comprising a stearic acid lining, a bentonite nanocomposite lining, and a frustum connecting portion, the top end of the frustum connecting portion being connected to the stearic acid lining and the bentonite nanocomposite lining, the bentonite nanocomposite lining being sleeved inside the stearic acid lining.

[0007] Preferably, an installation assembly is provided on one side of the heat storage outer liner, the installation assembly including an outer connecting sleeve, an insertion sleeve and a locking bolt.

[0008] Preferably, the insertion sleeve and the hole in the heat storage outer liner are connected by an embedded connection, the outer connecting sleeve is integrally formed and disposed at the opening of the insertion sleeve, and the locking bolt is located inside the outer connecting sleeve and is threadedly connected to the threaded part of the insertion sleeve.

[0009] Preferably, the refractory brick lining is composed of multiple refractory bricks spliced ​​together, one side of the refractory brick is provided with a concrete surface, one side of the concrete surface is provided with a high-temperature resistant ceramic sheet, and the interior of the refractory brick is filled with a reinforcing core.

[0010] Preferably, the inner liner comprises white corundum and light metal oxides, and is bonded together by mixing with an industrial adhesive.

[0011] Preferably, the top end of the bentonite nanocomposite bushing is provided with a capping ring, which is fixedly connected to the stearic acid bushing.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] This utility model discloses a furnace lining structure and its white fused alumina smelting furnace. By setting a heat storage outer lining including a stearic acid liner, a bentonite nanocomposite liner, and a frustum-shaped connecting part, the top of the frustum-shaped connecting part connects to the stearic acid liner and the bentonite nanocomposite liner. The bentonite nanocomposite liner is fitted inside the stearic acid liner, ensuring the heat storage density and stability of the entire white fused alumina smelting furnace, reducing heat loss during heat storage, and lowering energy consumption. An installation assembly is provided on one side of the heat storage outer lining. The installation assembly includes an outer connecting sleeve, an insertion sleeve, and a locking bolt. The insertion sleeve is embedded into a hole in the heat storage outer lining. The outer connecting sleeve is integrally formed at the opening of the insertion sleeve. The locking bolt is located inside the outer connecting sleeve and threadedly connected to the threaded portion of the insertion sleeve. This allows for quick connection to the shell of the white fused alumina smelting furnace, ensuring installation stability. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is an exploded structural diagram of the heat storage outer liner of this utility model.

[0016] Figure 3 This is a schematic diagram of the structure of the refractory brick lining of the clamping component of this utility model.

[0017] In the diagram: 1. Furnace lining structure; 2. Regenerator outer lining; 3. Refractory brick lining; 4. Inner lining sleeve; 5. Outer connecting sleeve; 6. Insert sleeve; 7. Locking bolt; 8. Stearic acid lining sleeve; 9. Bentonite nanocomposite lining sleeve; 10. Sealing ring; 11. Frustum connecting part; 12. Refractory brick; 13. Concrete surface; 14. High-temperature resistant ceramic sheet; 15. Reinforcing inner core. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] This utility model provides, for example Figure 1-3 A furnace lining structure is shown;

[0020] Example 1: The furnace lining structure 1 consists of a heat storage outer lining 2, a refractory brick lining 3, and an inner lining 4. The refractory brick lining 3 is located between the heat storage outer lining 2 and the inner lining 4 and is fixedly connected to the heat storage outer lining 2 and the inner lining 4. The heat storage outer lining 2 includes a stearic acid lining 8, a bentonite nanocomposite lining 9, and a frustum connecting part 11. The top end of the frustum connecting part 11 is connected to the stearic acid lining 8 and the bentonite nanocomposite lining 9. The bentonite nanocomposite lining 9 is fitted inside the stearic acid lining 8. A capping ring 10 is provided at the top end of the bentonite nanocomposite lining 9, and the capping ring 10 is fixedly connected to the stearic acid lining 8.

[0021] The scheme sets up a heat storage liner 2, which can ensure the heat storage density and stability of the entire white corundum smelting furnace, reduce heat loss during the heat storage process, and reduce energy consumption.

[0022] Example 2: The furnace lining structure 1 consists of a heat storage outer lining 2, a refractory brick lining 3, and an inner lining 4. The refractory brick lining 3 is located between the heat storage outer lining 2 and the inner lining 4 and is fixedly connected to the heat storage outer lining 2 and the inner lining 4. The heat storage outer lining 2 includes a stearic acid lining 8, a bentonite nanocomposite lining 9, and a frustum connecting part 11. The top of the frustum connecting part 11 is connected to the stearic acid lining 8 and the bentonite nanocomposite lining 9. The bentonite nanocomposite lining 9 is fitted inside the stearic acid lining 8. An installation assembly is provided on one side of the heat storage outer lining 2. The installation assembly includes an outer connecting sleeve 5, an insertion sleeve 6, and a locking bolt 7. The insertion sleeve 6 is embedded into the hole in the heat storage outer lining 2. The outer connecting sleeve 5 is integrally formed and set at the opening of the insertion sleeve 6. The locking bolt 7 is located inside the outer connecting sleeve 5 and is threadedly connected to the threaded part of the insertion sleeve 6.

[0023] This setup allows for quick connection to the shell of the white corundum smelting furnace, ensuring installation stability.

[0024] Example 3: The furnace lining structure 1 consists of a heat storage outer lining 2, a refractory brick lining 3, and an inner lining 4. The refractory brick lining 3 is located between the heat storage outer lining 2 and the inner lining 4 and is fixedly connected to the heat storage outer lining 2 and the inner lining 4. The heat storage outer lining 2 includes a stearic acid lining 8, a bentonite nanocomposite lining 9, and a frustum connecting part 11. The top of the frustum connecting part 11 is connected to the stearic acid lining 8 and the bentonite nanocomposite lining 9. The bentonite nanocomposite lining 9 is fitted inside the stearic acid lining 8. An installation assembly is provided on one side of the heat storage outer lining 2. The installation assembly includes an outer connecting sleeve 5, an insertion sleeve 6, and a locking bolt 7. The insertion sleeve 6 is embedded into the hole in the heat storage outer lining 2. The outer connecting sleeve 5 is integrally formed and installed at the opening of the insertion sleeve 6. The locking bolt 7 is located inside the outer connecting sleeve 5 and is threadedly connected to the threaded part of the insertion sleeve 6.

[0025] The refractory brick lining 3 is made up of multiple refractory bricks 12 spliced ​​together. One side of the refractory brick 12 is provided with a concrete surface 13, and one side of the concrete surface 13 is provided with a high-temperature resistant ceramic sheet 14. The interior of the refractory brick 12 is filled with a reinforcing core 15.

[0026] This can improve the fire resistance and heat resistance of the refractory brick lining 3, and increase its service life.

[0027] Example 4: The furnace lining structure 1 consists of a heat storage outer lining 2, a refractory brick lining 3, and an inner lining 4. The refractory brick lining 3 is located between the heat storage outer lining 2 and the inner lining 4 and is fixedly connected to the heat storage outer lining 2 and the inner lining 4. The heat storage outer lining 2 includes a stearic acid lining 8, a bentonite nanocomposite lining 9, and a frustum connecting part 11. The top of the frustum connecting part 11 is connected to the stearic acid lining 8 and the bentonite nanocomposite lining 9. The bentonite nanocomposite lining 9 is fitted inside the stearic acid lining 8. An installation assembly is provided on one side of the heat storage outer lining 2. The installation assembly includes an outer connecting sleeve 5, an insertion sleeve 6, and a locking bolt 7. The insertion sleeve 6 is embedded into the hole in the heat storage outer lining 2. The outer connecting sleeve 5 is integrally formed and set at the opening of the insertion sleeve 6. The locking bolt 7 is located inside the outer connecting sleeve 5 and is threadedly connected to the threaded part of the insertion sleeve 6. The inner liner 4 comprises white corundum and light metal oxides, which are bonded together by mixing with an industrial adhesive. The light metal oxide is α-alumina, and the industrial adhesive is water glass with a Baume degree of 30-38Be.

[0028] This solution also includes a white fused alumina smelting furnace, the shell of which is connected via an installation assembly on one side of the regenerator liner 2.

[0029] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A furnace lining structure, characterized by, The furnace lining structure (1) consists of a heat storage outer lining (2), a refractory brick lining (3) and an inner lining (4). The refractory brick lining (3) is located between the heat storage outer lining (2) and the inner lining (4) and is fixedly connected to the heat storage outer lining (2) and the inner lining (4). The heat storage outer lining (2) includes a stearic acid lining (8), a bentonite nanocomposite lining (9) and a frustum connecting part (11). The top of the frustum connecting part (11) is connected to the stearic acid lining (8) and the bentonite nanocomposite lining (9). The bentonite nanocomposite lining (9) is fitted inside the stearic acid lining (8).

2. A furnace lining structure according to claim 1, wherein The heat storage outer liner (2) is provided with an installation component on one side, which includes an outer connecting sleeve (5), an insertion sleeve (6), and a locking bolt (7).

3. A furnace lining structure according to claim 2, wherein The insertion sleeve (6) and the heat storage outer liner (2) are connected by an embedded connection. The outer connecting sleeve (5) is integrally formed and set at the opening of the insertion sleeve (6). The locking bolt (7) is located inside the outer connecting sleeve (5) and is threadedly connected to the threaded part of the insertion sleeve (6).

4. A furnace lining structure according to claim 1, wherein The refractory brick lining (3) is made up of multiple refractory bricks (12) spliced ​​together. A concrete surface (13) is provided on one side of the refractory brick (12), and a high-temperature resistant ceramic sheet (14) is provided on one side of the concrete surface (13). The interior of the refractory brick (12) is filled with a reinforcing core (15).

5. A furnace lining structure according to claim 1, wherein The top end of the bentonite nanocomposite bushing (9) is provided with a capping ring (10), which is fixedly connected to the stearic acid bushing (8).

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