Refractory material masonry structure of rotary kiln

Abstract

The utility model discloses a refractory material masonry structure of a rotary kiln, which comprises a refractory material built in a shell of the rotary kiln, and a drying zone, a high-temperature zone and a cooling zone which are sequentially arranged from top to bottom, eight transversely-arranged lifting bricks are arranged in the rotary kiln shell where the drying belt is located, the interval between every two adjacent lifting bricks is 45 degrees, and each lifting brick is formed by alternately arranging first refractory bricks and second refractory bricks up and down. Third refractory bricks are arranged in the rotary kiln shell where the high-temperature zone is located, and the third refractory bricks are longitudinally and annularly arranged along the inner wall of the rotary kiln shell. And fourth refractory bricks are arranged in the rotary kiln shell where the cooling zone is located, and the fourth refractory bricks are longitudinally and annularly arranged along the inner wall of the rotary kiln shell. According to the utility model, by optimizing the arrangement of the lifting bricks of the drying belt, after entering the rotary kiln, the waste activated carbon is fully stirred, fully contacted with hot air and dried, and is fully oxidized and combusted, so that the drying efficiency and quality of materials are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotary kilns, and in particular relates to a refractory masonry structure of a rotary kiln. Background Art

[0002] In industrial production, rotary kilns, as an important thermal equipment, are widely used in industries such as cement, metallurgy, and chemicals. However, during operation, rotary kilns must withstand a variety of harsh conditions such as high temperature, wear, and chemical erosion, which places high demands on the refractory brick masonry structure.

[0003] The existing rotary kiln lining is basically built with high-grade refractory bricks that are flat throughout the entire body. The effect of incinerating waste activated carbon is poor. During use, the waste activated carbon is not fully burned and cannot be completely burned at the tail of the kiln, resulting in high thermal reduction rate, high slag discharge ratio, and difficulty in flue gas control, which affects production efficiency and product quality. Summary of the Invention

[0004] In order to solve the above technical problems existing in the prior art, the utility model provides a rotary kiln refractory material masonry structure, which can improve the service life and working efficiency of the rotary kiln.

[0005] The technical solution adopted in this utility model is:

[0006] A rotary kiln refractory material masonry structure comprises refractory material masonry in a rotary kiln shell, characterized in that it comprises a drying zone (1), a high-temperature zone (2) and a cooling zone (3) arranged in sequence from top to bottom; the inner wall of the rotary kiln shell where the drying zone (1) is located is provided with eight horizontally arranged lifting bricks along the circumference, adjacent lifting bricks are spaced 45 degrees apart, and each lifting brick is composed of a first refractory brick (5) and a second refractory brick (6) arranged alternately up and down; the rotary kiln shell where the high-temperature zone (2) is located is provided with a third refractory brick (8), and the third refractory brick (8) is arranged in a longitudinal annular manner along the inner wall of the rotary kiln shell; the rotary kiln shell where the cooling zone (3) is located is provided with a fourth refractory brick (9), and the fourth refractory brick (9) is arranged in a longitudinal annular manner along the inner wall of the rotary kiln shell.

[0007] Furthermore, the thickness of the first refractory brick (5) is 350 mm; the thickness of the second refractory brick (6) is 300 mm; the thickness of the third refractory brick is 350 mm; and the thickness of the fourth refractory brick is 300 mm.

[0008] Furthermore, the drying zone (1) is located at the kiln head 1-6 meters inside the rotary kiln shell.

[0009] Furthermore, the high temperature zone (2) is located 7-17 meters inside the rotary kiln shell.

[0010] Furthermore, the cooling zone (3) is located 18-22 meters inside the rotary kiln shell to the kiln tail.

[0011] Furthermore, a material retaining ring (7) is provided at the tail end of the drying belt (1).

[0012] Furthermore, the retaining ring (7) is formed by a fifth refractory brick longitudinally surrounding the inner wall of the rotary kiln shell, and the thickness of the fifth refractory brick is 350 mm.

[0013] Compared with the prior art, the beneficial effects of the present invention are embodied in:

[0014] 1. The utility model optimizes the arrangement of the drying belt lifting bricks so that the waste activated carbon is fully stirred and in full contact with the hot air after entering the rotary kiln. After drying, it is fully oxidized and burned, thereby improving the drying efficiency and quality of the material.

[0015] 2. The utility model provides a material retaining ring, which not only has the function of retaining materials, but also increases the residence time of waste activated carbon in the kiln, so that it can be fully dried and burned.

[0016] 3. The utility model enhances the heat insulation performance, improves the thermal efficiency and reduces energy consumption by arranging thickened refractory bricks in the high temperature zone.

[0017] 4. The utility model reduces the cost and ensures the cooling effect by reasonably reducing the thickness of the refractory bricks of the cooling zone. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a partial enlarged view of the arrangement of drying belt lifting bricks.

[0019] Figure 2 This is a schematic diagram of the refractory brick masonry structure of the rotary kiln of the utility model. DETAILED DESCRIPTION

[0020] The following describes the specific implementation of the embodiment of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the embodiment of the present invention and is not intended to limit the embodiment of the present invention.

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in combination with exemplary embodiments.

[0023] refer to Figure 1 and Figure 2The utility model discloses a rotary kiln refractory masonry structure, comprising refractory masonry within the rotary kiln shell, comprising a drying zone 1, a high-temperature zone 2, and a cooling zone 3 sequentially arranged from top to bottom; the inner wall of the rotary kiln shell where the drying zone 1 is located is provided with eight horizontally arranged lifting bricks along the circumference, with adjacent lifting bricks spaced 45 degrees apart, and each lifting brick is composed of a first refractory brick 5 and a second refractory brick 6 alternately arranged up and down; the rotary kiln shell where the high-temperature zone 2 is located is provided with a third refractory brick 8, and the third refractory brick 8 is arranged in a longitudinal annular manner along the inner wall of the rotary kiln shell; the rotary kiln shell where the cooling zone 3 is located is provided with a fourth refractory brick 9, and the fourth refractory brick 9 is arranged in a longitudinal annular manner along the inner wall of the rotary kiln shell.

[0024] In one embodiment, the thickness of the first refractory brick 5 is 350 mm; the thickness of the second refractory brick 6 is 300 mm; the thickness of the third refractory brick is 350 mm; and the thickness of the fourth refractory brick is 300 mm.

[0025] In one embodiment, the drying zone 1 is located at a kiln head 1-6 meters inside the rotary kiln shell.

[0026] In one embodiment, the high temperature zone 2 is located 7-17 meters inside the rotary kiln shell.

[0027] In one embodiment, the cooling zone 3 is located 18-22 meters inside the rotary kiln shell to the kiln tail.

[0028] In one embodiment, a material retaining ring 7 is provided at the tail end of the drying belt 1 .

[0029] In one embodiment, the retaining ring 7 is formed by a fifth refractory brick longitudinally surrounding the inner wall of the rotary kiln shell, and the thickness of the fifth refractory brick is 350 mm.

[0030] The utility model optimizes the arrangement of the material-raising bricks in the drying zone, so that after the waste activated carbon enters the rotary kiln, it is fully stirred and in full contact with the hot air. After drying, it is fully oxidized and burned, thereby improving the drying efficiency and quality of the material. The material retaining ring not only serves as a material retaining ring, but also increases the residence time of the waste activated carbon in the kiln, allowing it to be fully dried and burned. By installing thickened refractory bricks in the high-temperature zone, the thermal insulation performance is enhanced, the thermal efficiency is improved, and energy consumption is reduced. By rationally reducing the thickness of the refractory bricks in the cooling zone, costs are reduced while ensuring the cooling effect.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0033] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0036] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A rotary kiln refractory masonry structure, comprising refractory materials built in the rotary kiln shell, characterized in that: The invention comprises a drying zone (1), a high-temperature zone (2) and a cooling zone (3) which are arranged in sequence from top to bottom; the inner wall of the rotary kiln shell where the drying zone (1) is located is provided with eight horizontally arranged lifting bricks along the circumference, and the adjacent lifting bricks are spaced 45 degrees apart, and each lifting brick is composed of a first refractory brick (5) and a second refractory brick (6) which are arranged alternately up and down; the rotary kiln shell where the high-temperature zone (2) is located is provided with a third refractory brick (8), and the third refractory brick (8) is arranged in a longitudinal annular manner along the inner wall of the rotary kiln shell; the rotary kiln shell where the cooling zone (3) is located is provided with a fourth refractory brick (9), and the fourth refractory brick (9) is arranged in a longitudinal annular manner along the inner wall of the rotary kiln shell.

2. A rotary kiln refractory masonry structure according to claim 1, characterized in that: The thickness of the first refractory brick (5) is 350 mm; the thickness of the second refractory brick (6) is 300 mm; the thickness of the third refractory brick is 350 mm; and the thickness of the fourth refractory brick is 300 mm.

3. A rotary kiln refractory masonry structure according to claim 1, characterized in that: The drying zone (1) is located at the kiln head 1-6 meters inside the rotary kiln shell.

4. A rotary kiln refractory masonry structure according to claim 1, characterized in that: The high temperature zone (2) is located 7-17 meters inside the rotary kiln shell.

5. The rotary kiln refractory masonry structure according to claim 1, characterized in that: The cooling zone (3) is located 18-22 meters inside the rotary kiln shell to the kiln tail.

6. A rotary kiln refractory masonry structure according to claim 1, characterized in that: A material retaining ring (7) is provided at the tail end of the drying belt (1).

7. A rotary kiln refractory masonry structure according to claim 6, characterized in that: The retaining ring (7) is formed by a fifth refractory brick longitudinally surrounding the inner wall of the rotary kiln shell, and the thickness of the fifth refractory brick is 350 mm.

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