A rotary refining furnace discharge port area brick masonry structure

Abstract

This invention belongs to the field of furnace structure masonry technology, specifically disclosing a brick masonry structure for the outlet area of ​​a rotary refining furnace. The structure includes an outlet area and a circumferential cylindrical brickwork. The circumferential cylindrical brickwork seamlessly connects with the outlet area brickwork. A base brick is built on the lower circumferential cylindrical brickwork, and a combination eye brick is built on the base brickwork. Surrounding bricks are built on both sides of the combination eye brickwork, and a cover brick is built on top of the last combination eye brickwork. The laying angle of the cover brickwork is determined by the upper circumferential cylindrical brickwork and the combination eye brickwork. This invention provides a masonry structure with high strength and stability, a tight bond with the surrounding circumferential lining, and resistance to damage. The eye brickwork, base brickwork, cover brickwork, and surrounding brickwork maintain tight contact, minimizing gaps. It offers advantages such as convenient patching, minimal leakage during production, and safe discharge of molten metal from the metallurgical furnace.

Description

Technical Field

[0001] This invention belongs to the field of furnace structure masonry technology, specifically relating to a brick masonry structure for the outlet area of ​​a rotary refining furnace. Background Technology

[0002] In traditional rotary refining furnaces used for crude metal refining, the lining of the outlet section is constructed using the same brickwork as the main body, with the burner used for discharge after the lining is completed. This lining structure lacks precise targeting; if weak points are burned during the burner operation, the brickwork can easily crack, leading to molten metal leakage. Furthermore, the outlet area operates under harsh conditions, constantly subjected to the erosion and mechanical impact of high-temperature molten metal, resulting in rapid wear, short lifespan, and frequent maintenance. During maintenance, the outlet is interlocked with the surrounding cylindrical body, making patching difficult. Inconsistencies in the size and expansion of old and new bricks can easily create gaps, leading to molten metal leakage and potential accidents.

[0003] Therefore, the traditional rotary refining furnace outlet area masonry structure has problems such as unreasonable masonry structure, short service life, high maintenance frequency, difficulty in excavation and repair, and low safety. Summary of the Invention

[0004] The purpose of this invention is to provide a brick masonry structure for the outlet area of ​​a rotary refining furnace, in order to solve the problems of unreasonable masonry structure, short service life, high maintenance frequency, difficulty in excavation and repair, and low safety in the outlet area of ​​a rotary refining furnace.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A brickwork structure for the discharge port area of ​​a rotary refining furnace includes a discharge port area and a circumferential cylindrical brickwork. The circumferential cylindrical brickwork is seamlessly connected to the brickwork of the discharge port area. A base brickwork is built on the lower circumferential cylindrical brickwork. A combined eyelet brickwork is built on the base brickwork. The combined eyelet brickwork consists of four eyelet brickworks, with the centers of the four combined eyelet brickworks aligned horizontally on a straight line. The opening positions of each of the four eyelet brickworks are different, and they can form a channel when combined. The size of the center hole of the combined eyelet brickwork is determined according to the melt discharge rate. Surrounding brickworks are built on both sides of the combined eyelet brickworks. The construction method is straight-joint construction, and the angle of the surrounding brickworks is consistent with that of the circumferential cylindrical brickworks. A cover plate brickwork is built on top of the last combined eyelet brickwork. The construction angle of the cover plate brickworks is determined by the upper circumferential cylindrical brickworks and the combined eyelet brickworks.

[0007] Preferably, the angle of the base brick is determined by the lower circumferential cylindrical brick and the combined eye brick (2) to ensure that the center line of the combined eye brick is consistent with and horizontal to the center line of the opening of the refining furnace shell.

[0008] Preferably, the length of the combined eye brick is the same as that of the circumferential cylindrical brick, the thickness is an integer multiple of the circumferential cylindrical brick, and the width is an integer multiple of the size of the central hole plus the thickness of the mortar joint, so as to facilitate the laying of the base brick and the cover brick.

[0009] The beneficial effects of this invention are as follows:

[0010] The masonry structure of this invention boasts high strength and stability, and its tight bond with the surrounding circumferential lining makes it resistant to damage. The eye bricks, base bricks, cover bricks, and surrounding bricks maintain a tight seal, minimizing gaps. It offers advantages such as convenient patching, minimal leakage during production, and safe discharge of molten metal from metallurgical furnaces. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the present invention;

[0012] Figure 2 This is a side view of the present invention;

[0013] In the diagram: 1. Base brick; 2. Combined eye brick; 3. Surrounding brick; 4. Cover brick; 5. Circumferential cylindrical brick. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0015] like Figure 1 and 2 The diagram illustrates a brickwork structure for the outlet area of ​​a rotary refining furnace, comprising an outlet area and a cylindrical brickwork 5. The cylindrical brickwork 5 is seamlessly joined and tightly bonded to the outlet area brickwork. A base brick 1 is laid on top of the lower cylindrical brickwork 5, its angle determined by the lower cylindrical brickwork 5 and the combined eyelet brick 2, cut from wide standard bricks to ensure the centerline of the combined eyelet brick 2 is aligned with and horizontal to the centerline of the furnace shell opening. The combined eyelet brick 2 is laid on the base brick 1, and each combined eyelet brick 2 consists of four bricks. The centers of the four combined eyelet bricks are aligned and horizontal. Each of the four eyelet bricks has a different opening position, forming a channel after assembly. The arc of the assembled bricks matches the arc of the furnace shell, and its shape is fan-shaped. Brick 2 has the same length as the circumferential cylindrical brick 5, and its thickness is an integer multiple of the circumferential cylindrical brick 5. Its width is designed to be an integer multiple of 75mm or 100mm plus the mortar joint thickness, depending on the size of the central hole, to facilitate the construction of the base and cover plate. The size of the central hole of the combined eye brick 2 is determined according to the melt discharge volume. Surrounding bricks 3 are built on both sides of the combined eye brick 2. Wide bricks are used to improve the strength and erosion resistance of this part. The construction method is straight joint construction to facilitate excavation, patching and replacement. The surrounding bricks are wedge-shaped bricks, and the angle of the surrounding bricks 3 is the same as that of the circumferential cylindrical brick 5. The last combined eye brick 2 is covered with a cover plate brick 4. The construction angle of the cover plate brick 4 is determined by the upper circumferential cylindrical brick 5 and the combined eye brick 2. After determination, it is cut from a wide standard brick.

[0016] During construction, first lay the lower circumferential cylindrical bricks 5 in the outlet area. After completion, pre-lay the combined eye bricks 2. Before laying, use a base layer to check the horizontality, verticality, and concentricity of the combined eye bricks 2, aligning them with the furnace shell opening. After pre-laying, measure the distance between the lower circumferential cylindrical bricks 5 and the first combined eye brick 2. Cut the base brick 1 using standard width bricks according to the measured dimensions, ensuring the upper thickness is not less than two layers of circumferential cylindrical bricks. Lay the second, third, and fourth combined eye bricks 2 sequentially, ensuring horizontality, verticality, and concentricity, and aligning them with the furnace shell opening. Lay the combined eye bricks... When laying the bricks on both sides of the 2nd side, use the wide circular cylindrical bricks 5 to lay them with straight joints, ensuring horizontality, verticality, and concentricity, and ensuring they are tightly fitted to the combined eye bricks 2, wet-laid with full mortar; fill in the gaps on both sides of the circumferential cylindrical bricks 5, wet-laid with full mortar; pre-lay the bricks to measure the distance between the upper circumferential cylindrical bricks 5 and the 4th combined eye brick 2, and cut the cover bricks 4 with standard wide bricks according to the measured dimensions, ensuring that the thickness of the upper opening is not less than two layers of circumferential cylindrical bricks; fill in the gaps on both sides of the cover bricks 4, wet-laid with full mortar; lay the upper circumferential cylindrical bricks 5 of the cover bricks 4, breaking the joints, wet-laid with full mortar.

[0017] The function of the discharge port of the rotary refining furnace is to discharge the refined crude metal from the furnace into the chute after the crude metal refining cycle is completed, and then cast. The brick masonry structure in the discharge port area mainly serves to compress, connect, and transition the inner lining of the circumferential cylinder, protecting the furnace shell from being burned by the molten metal. At the same time, it must ensure that the discharge port is horizontal in the discharge position, neither tilted upwards nor downwards, so as to avoid the molten metal splashing and impacting the chute, and to control its flow rate, velocity, and direction. The brickwork in the discharge port area must seamlessly transition and connect with the brickwork of the circumferential cylinder, "integrating" it into one, to ensure integrity and tightness and prevent leakage; at the same time, it must "exist independently" to facilitate replacement and local repair. These two aspects must exist in a contradictory yet unified manner. The masonry structure can be divided into composite eye bricks 2, base bricks 1 (also called adjusting bricks), cover bricks 4 (also called adjusting bricks), and side surrounding bricks 3. The masonry sequence is base bricks 1, composite eye bricks 2, side surrounding bricks 3, and cover bricks 4. After the structure is completed, the angles must be consistent with the angles of other bricks in the circumferential cylinder. After the composite bricks in the outlet area are completed, their appearance is completely consistent with the circumferential cylinder bricks 5, with no misalignment or gaps, and a tight fit. Among them, composite eye bricks 2 consist of 4 pieces, base bricks 1 and cover bricks 4 are cut from wide bricks according to the required angle and width of the eye bricks, and their combined width is consistent with the width of the eye bricks. The side surrounding bricks 3 are wide bricks laid with straight joints. After completion, the composite eye bricks surround the base bricks 1, surrounding bricks 3, and cover bricks 4. The entire rotary refining furnace lining can be roughly divided into end walls, circumferential cylinder, and furnace opening, with the bricks in the outlet area embedded in the circumferential cylinder. When constructing a rotary refining furnace, the end walls are built first, followed by the circumferential cylinder using a rotary masonry method. The outlet bricks are laid simultaneously during the circumferential masonry construction. This masonry structure boasts high strength and stability, a tight bond with the surrounding circumferential lining, and is resistant to damage. The eye bricks, base bricks, cover bricks, and surrounding bricks maintain a tight seal, minimizing gaps and offering advantages such as easy patching, minimal leakage during production, and safe discharge of molten metal from the metallurgical furnace.

Claims

1. A brick masonry structure for the outlet area of ​​a rotary refining furnace, characterized in that: The system includes an outlet area and a circumferential cylindrical brick (5). The circumferential cylindrical brick (5) is seamlessly connected to the bricks in the outlet area. A base brick (1) is built on the lower circumferential cylindrical brick (5). A combination eye brick (2) is built on the base brick (1). The combination eye brick (2) is composed of 4 eye bricks. The centers of the 4 combined eye bricks are on a straight line and horizontal. The opening positions of each of the 4 eye bricks are different. After combination, they can form a channel. The size of the center hole of the combination eye brick (2) is determined according to the melt discharge volume. Surrounding bricks (3) are built on both sides of the combination eye brick (2). The building method is straight joint building. The corners of the surrounding bricks (3) The angle of the upper circumferential cylindrical brick (5) is consistent with that of the combined eye brick (2). The last combined eye brick (2) is covered with a cover brick (4). The angle of the cover brick (4) is determined by the upper circumferential cylindrical brick (5) and the combined eye brick (2). The angle of the base brick (1) is determined by the lower circumferential cylindrical brick (5) and the combined eye brick (2) to ensure that the center line of the combined eye brick (2) is consistent with the center line of the refining furnace shell opening and is horizontal. The length of the combined eye brick (2) is consistent with that of the circumferential cylindrical brick (5), the thickness is an integer multiple of the circumferential cylindrical brick (5), and the width is an integer multiple of the size of the center hole plus the thickness of the mortar joint, so as to facilitate the construction of the base brick (1) and the cover brick (4).

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