A sintering machine ignition furnace roof refractory lining structure

Abstract

The utility model provides a kind of sintering machine ignition furnace roof refractory lining structure.The lining structure is by a first prefabricated block with burner hole and a second prefabricated block without burner hole alternate splicing, first expansion joint is equipped between two adjacent prefabricated blocks, second expansion joint is equipped between the adjacent two prefabricated blocks of same column;Each first prefabricated block and second prefabricated block is respectively equipped with multiple refractory anchoring hanging bricks, and the first prefabricated block and the second prefabricated block are connected with the inner wall of ignition furnace roof by refractory anchoring hanging brick respectively.The utility model uses refractory prefabricated part to assemble ignition furnace roof lining instead of integral pouring lining, thereby reducing the size of ignition furnace roof refractory lining pouring body, construction quality is easy to control, its structural strength and uniformity are good, integrity is promoted, avoids stratification, also avoids that pouring body generates more irregular cracks and gap due to size is larger, also shortens furnace heating time, greatly reduces the maintenance construction period.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sintering technical field, especially relate to a sintering machine ignition furnace roof refractory lining structure. BACKGROUND

[0002] At present, the sintering machine ignition furnace roof refractory lining structure of ironworks is the whole pouring structure of anchor brick and castable, because the sintering machine ignition furnace roof usually has a span greater than 5m, the stratification easily occurs in the pouring construction process, and the whole pouring refractory lining produces irregular cracks due to the non-uniform thermal expansion of the longitudinal and transverse dimensions after production.

[0003] The above-mentioned situation easily leads to the stratification peeling, local cracking and irregular crack phenomenon of the ignition furnace roof refractory lining in the production process. The service life of this ignition furnace roof refractory lining structure is not easy to be guaranteed, and it is not conducive to the later maintenance construction. If the ignition furnace roof refractory lining locally peels off and breaks and burns through, the whole ignition furnace roof lining needs to be removed and poured and constructed again, and about 50 tons of refractory are consumed each time. In addition, the production load of the ironworks is large, and the maintenance time of the sintering machine ignition furnace roof is usually short. The original refractory lining is poured and constructed in whole, and at least 5 days of furnace baking time is arranged after the construction, so the maintenance period is long, and it is at least 15 days. SUMMARY

[0004] In order to solve the above technical problems, the utility model provides a sintering machine ignition furnace roof refractory lining structure, which is assembled by refractory prefabricated parts, can reduce the size of the ignition furnace roof refractory lining pouring body, and the construction quality is easy to control, and the structural strength and uniformity are good, the integrity can be improved, the stratification can be avoided, and the pouring body can also avoid more irregular cracks and gaps due to the large size.

[0005] The utility model provides a sintering machine ignition furnace roof refractory lining structure, which is assembled by refractory prefabricated parts, can reduce the size of the ignition furnace roof refractory lining pouring body, and the construction quality is easy to control, and the structural strength and uniformity are good, the integrity can be improved, the stratification can be avoided, and the pouring body can also avoid more irregular cracks and gaps due to the large size.

[0006] The utility model more preferably technical scheme: the length and width size of first prefabricated block and second prefabricated block are all not greater than 1.5m.

[0007] The utility model more preferably technical scheme: the width of first expansion joint and second expansion joint is 8-12mm.

[0008] The preferred technical scheme of the utility model: the first prefabricated block size is same in the same column, the second prefabricated block size is same in the same column, the first prefabricated block size is same or different in different columns, the second prefabricated block size is same or different in different columns, and the size of the first prefabricated block is greater than the second prefabricated block.

[0009] The preferred technical scheme of the utility model: the plurality of fireproof anchor hanging bricks on the first prefabricated block and the second prefabricated block are evenly distributed, each fireproof anchor hanging brick penetrates the corresponding prefabricated block and is anchored and connected with the corresponding prefabricated block, and each fireproof anchor hanging brick has one end extending out of the corresponding prefabricated block adjacent to the inner wall of the furnace top of the ignition furnace and is provided with a T-shaped anchor head.

[0010] The preferred technical scheme of the utility model: at least two burner holes are arranged on each first prefabricated block, and the burner holes on the first prefabricated blocks in the same column are on the same straight line.

[0011] The utility model has the advantages of:

[0012] (1) the utility model discloses that according to the size of the ignition furnace top of the sintering machine, the refractory lining of the entire ignition furnace top is designed as a refractory prefabricated part with a length-width size not greater than 1.5m*1.5m, and the refractory lining of the ignition furnace top is assembled by using the refractory prefabricated part instead of integral pouring lining, so that the size of the refractory lining pouring body of the ignition furnace top is reduced, the construction quality of a single refractory lining prefabricated part is easy to control, the structural strength and uniformity are good, the integrity is improved, and stratification is avoided.

[0013] (2) the utility model discloses that the expansion joint of 8-12mm is reserved around the prefabricated part, and a plurality of irregular cracks and gaps generated due to the large size of the pouring body are avoided.

[0014] (3) the refractory prefabricated part of the utility model is prefabricated and maintained in a manufacturing workshop, and then is baked, so that the baking time of the ignition furnace of the sintering machine is only about 20 hours, the baking time is shortened, and the production use can be carried out after simple baking, and the entire overhaul time can be controlled to be about 7 days, so that the overhaul construction period is greatly reduced. DRAWINGS

[0015] Figure 1 It is the structural schematic diagram of the utility model;

[0016] Figure 2 It is the plane schematic diagram of the first prefabricated part in the utility model;

[0017] Figure 3 It is Figure 2 A-A sectional view in the utility model;

[0018] Figure 4 It is Figure 2 B-B sectional view in the utility model;

[0019] Figure 5 is a plane schematic view of the second prefabricated part in the utility model;

[0020] Figure 6 is Figure 5 a C-C section view in the utility model;

[0021] Figure 7 is Figure 5 a D-D section view in the utility model.

[0022] In the drawing: 1 - first prefabricated block, 2 - second prefabricated block, 3 - burner hole, 4 - first expansion joint, 5 - second expansion joint, 6 - refractory anchoring hanging brick. DETAILED DESCRIPTION

[0023] The utility model will be further described below in combination with the drawings and examples. Figures 1 to 7 All are the drawings of examples, are drawn in a simplified way, and are only used for the purpose of clearly and concisely illustrating the embodiments of the utility model. The technical solutions shown in the drawings are specific schemes of the embodiments of the utility model, and are not intended to limit the scope of the claimed utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0024] In the description of the utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, or the orientation or positional relationship commonly understood by those skilled in the art, and are only for the convenience of describing the utility model and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0025] The embodiment provides a sintering machine ignition furnace roof refractory lining structure, which comprises a refractory lining and a refractory lining support. Figures 1 to 7As shown, the inner lining structure is formed by alternately splicing a row of first prefabricated blocks 1 with burner holes 3 and a row of second prefabricated blocks 2 without burner holes, a first expansion joint 4 is arranged between two adjacent rows of prefabricated blocks, and a second expansion joint 5 is arranged between two adjacent prefabricated blocks in the same row; a plurality of refractory anchoring hanging bricks 6 are arranged on each first prefabricated block 1 and second prefabricated block 2, respectively, the first prefabricated block 1 and the second prefabricated block 2 are connected with the ignition furnace roof structure beam through the refractory anchoring hanging bricks 6, respectively, to form a refractory inner lining of the ignition furnace roof. The length and width dimensions of the first prefabricated block 1 and the second prefabricated block 2 are both not greater than 1.5 m. The width of the first expansion joint 4 and the second expansion joint 5 is 8-12 mm.

[0026] The size of the prefabricated part in the embodiment is designed and confirmed according to the size of the ignition furnace roof, the first prefabricated blocks 1 in the same row are of the same size, and the second prefabricated blocks 2 in the same row are of the same size, so as to reduce the specifications of the prefabricated parts; the first prefabricated blocks 1 in different rows are of the same size or different sizes, and the second prefabricated blocks 2 in different rows are of the same size or different sizes; the size of the first prefabricated block 1 is greater than that of the second prefabricated block 2.

[0027] In the embodiment, as shown in Figure 2 and Figure 5 As shown, the plurality of refractory anchoring hanging bricks 6 on the first prefabricated block 1 and the second prefabricated block 2 are uniformly distributed, each refractory anchoring hanging brick 6 penetrates through the corresponding prefabricated block and is anchored and connected with the corresponding prefabricated block, and one end of each refractory anchoring hanging brick 6 adjacent to the inner wall of the ignition furnace roof extends out of the corresponding prefabricated block and is provided with a T-shaped anchoring head. At least two burner holes 3 are arranged on each first prefabricated block 1, and the burner holes 3 on the first prefabricated blocks 1 in the same row are on the same straight line.

[0028] The utility model is applied to the ignition furnace of the sintering machine in the first burning operation area of WISCO Limited Iron Plant, the size specifications of various prefabricated parts are designed and confirmed according to the actual size of the ignition furnace roof of the sintering machine. The specifications of the prefabricated parts in the same row or the same position are designed to be the same size as far as possible, so as to reduce the specifications of the prefabricated parts, and the length and width dimensions of the prefabricated parts are both not greater than 1.5 m. The prefabricated parts are prefabricated in a processing and manufacturing workshop. First, the prefabricated part mold is installed and fixed in place. Second, the refractory anchoring hanging bricks are put in and fixed firmly. Third, the refractory castable is stirred uniformly and poured into the mold for pouring construction. In the pouring process, the vibrating rod is used for vibrating and compacting. After the refractory prefabricated part is prefabricated and maintained in the manufacturing workshop, it is baked for standby. Finally, the prefabricated parts manufactured are installed in the ignition furnace of the sintering machine according to the part number in sequence.

[0029] The refractory precast piece is used for the construction of the top of the ignition furnace of the sintering machine, which reduces the overall size of the refractory of the top of the ignition furnace, avoids cracks caused by pouring stratification and uneven expansion during the construction process. Meanwhile, the ignition furnace constructed by using the structure can be locally replaced by the precast piece during the later maintenance, which saves the amount of refractory, greatly shortens the maintenance construction time, and is beneficial to the rapid production and use of the sintering machine. The amount of refractory used during each maintenance can be saved by more than 30 tons, the maintenance time is reduced by more than 7 days, and the economic benefits of more than 5 million yuan can be increased.

[0030] The above is only one embodiment of the present application, which is described in more detail, but it should not be construed as limiting the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of the present application should be subject to the appended claims.

Claims

1. A refractory lining structure for the top of a sintering machine ignition furnace, characterized in that: The inner lining structure is formed by alternating splicing of a first precast block (1) with burner holes (3) and a second precast block (2) without burner holes. A first expansion joint (4) is provided between two adjacent precast blocks, and a second expansion joint (5) is provided between two adjacent precast blocks in the same column. Each first precast block (1) and second precast block (2) is provided with multiple refractory anchoring bricks (6). The first precast block (1) and the second precast block (2) are respectively connected to the furnace top structure beam of the ignition furnace through the refractory anchoring bricks (6).

2. The refractory lining structure for the top of a sintering machine ignition furnace according to claim 1, characterized in that: The length and width of the first precast block (1) and the second precast block (2) are both no greater than 1.5m.

3. The refractory lining structure for the top of a sintering machine ignition furnace according to claim 1 or 2, characterized in that: The width of the first expansion joint (4) and the second expansion joint (5) is 8-12 mm.

4. The refractory lining structure for the top of a sintering machine ignition furnace according to claim 1 or 2, characterized in that: The first precast block (1) in the same column has the same size, and the second precast block (2) in the same column has the same size; the first precast block (1) in different columns has the same or different size, and the second precast block (2) in different columns has the same or different size; the size of the first precast block (1) is larger than that of the second precast block (2).

5. The refractory lining structure for the top of a sintering machine ignition furnace according to claim 1 or 2, characterized in that: Multiple refractory anchoring bricks (6) are evenly distributed on the first precast block (1) and the second precast block (2). Each refractory anchoring brick (6) penetrates the corresponding precast block and is anchored to the corresponding precast block. Each refractory anchoring brick (6) extends from the inner wall of the furnace top of the ignition furnace to the corresponding precast block and is provided with a T-shaped anchor head.

6. The refractory lining structure for the top of a sintering machine ignition furnace according to claim 1 or 2, characterized in that: Each first precast block (1) is provided with at least two burner holes (3), and the burner holes (3) on the first precast blocks (1) in the same column are on the same straight line.

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