Wear-resistant and corrosion-resistant structure for inner wall of rotary kiln

Abstract

The utility model relates to the technical field of rotary kilns, in particular to a rotary kiln inner wall abrasion-resistant and corrosion-resistant structure which comprises a base layer, an abrasion-resistant layer is connected to the front end of the base layer in an adhesive mode, a corrosion-resistant layer is connected to the front end of the abrasion-resistant layer in an adhesive mode, and a reinforcing layer is connected to the front end of the corrosion-resistant layer in an adhesive mode. According to the abrasion-resistant and corrosion-resistant structure for the inner wall of the rotary kiln, the aluminum oxide ceramic layer and the silicon carbide ceramic layer in the abrasion-resistant layer have extremely high hardness and abrasion resistance, friction and impact generated when materials move in the rotary kiln can be effectively resisted, the abrasion degree of the inner wall is greatly reduced, the service life of the rotary kiln is prolonged, and the service life of the rotary kiln is prolonged. Even when high-hardness and high-abrasion materials are treated, good abrasion resistance can be kept, the frequency of equipment maintenance and replacement is reduced, and the polytetrafluoroethylene layer and the epoxy resin layer in the anti-corrosion layer have excellent chemical corrosion resistance and can resist erosion of various chemical substances in the rotary kiln.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary kilns, and particularly relates to a wear-resistant and corrosion-resistant structure for the inner wall of a rotary kiln. Background Art

[0002] In industrial production, rotary kilns are widely used in many fields such as cement, metallurgy, and chemical industry for high-temperature treatment and chemical reactions of materials. However, due to the extremely harsh working environment of rotary kilns, their inner walls are long-term affected by various adverse factors such as high temperature, friction of materials, and erosion of chemical substances.

[0003] The traditional inner wall structure of rotary kilns usually uses a single material, which often shows serious wear and corrosion in a short time, resulting in a shortened service life of the rotary kiln, increased maintenance costs, reduced production efficiency, and even affecting product quality. Therefore, we introduce a wear-resistant and corrosion-resistant structure for the inner wall of a rotary kiln. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a wear-resistant and corrosion-resistant structure for the inner wall of a rotary kiln, which can effectively solve the problems in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A wear-resistant and corrosion-resistant structure for the inner wall of a rotary kiln includes a base layer. A wear-resistant layer is adhesively connected to the front end of the base layer. An anti-corrosion layer is adhesively connected to the front end of the wear-resistant layer. A strengthening layer is adhesively connected to the front end of the anti-corrosion layer.

[0007] The wear-resistant layer includes an alumina ceramic layer. A first adhesive layer is fixedly connected to the front end of the silicon carbide ceramic layer. The alumina ceramic layer is adhesively connected to the rear end by a first adhesive layer.

[0008] Preferably, the rear end of the alumina ceramic layer is adhesively connected to the front end of the base layer through the first adhesive layer.

[0009] By adopting the above technical solution: The alumina ceramic layer is designed in the form of small-piece splicing. Each ceramic piece is tightly connected through a special high-temperature resistant adhesive to form an integral wear-resistant surface.

[0010] Preferably, the anti-corrosion layer includes a polytetrafluoroethylene layer. An epoxy resin layer is fixedly connected to the front end of the polytetrafluoroethylene layer. The polytetrafluoroethylene layer is adhesively connected to the rear end by a second adhesive layer.

[0011] By adopting the above technical solution: The polytetrafluoroethylene layer has excellent chemical corrosion resistance and can resist the erosion of various strong acids, strong bases, and organic solvents. The epoxy resin layer further enhances the anti-corrosion effect. The two work together to provide a strong anti-corrosion barrier for the inner wall of the rotary kiln.

[0012] Preferably, the rear end of the polytetrafluoroethylene layer is adhesively connected to the front end of the silicon carbide ceramic layer through the second adhesive layer.

[0013] By adopting the above technical solution: the polytetrafluoroethylene layer ensures sufficient anti-corrosion performance without affecting the strength and heat conduction of the overall structure.

[0014] Preferably, the reinforcing layer includes a nickel-based alloy layer, a heat-resistant stainless steel layer is fixedly connected to the front end of the nickel-based alloy layer, and a third adhesive layer is adhesively connected to the rear end of the nickel-based alloy layer.

[0015] By adopting the above technical solution: the nickel-based alloy layer has excellent high-temperature strength and creep resistance, can withstand the huge mechanical stress generated during the operation of the rotary kiln, and the heat-resistant stainless steel layer further enhances the overall strength and toughness, enabling the reinforcing layer to effectively resist deformation and cracking.

[0016] Preferably, the rear end of the nickel-based alloy layer is adhesively connected to the front end of the epoxy resin layer through the third adhesive layer.

[0017] By adopting the above technical solution: the nickel-based alloy layer is designed in a mesh or honeycomb structure to provide additional support and strength, preventing the inner layer structure from deforming or being damaged under high temperature and mechanical stress.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. In the utility model, the alumina ceramic layer and the silicon carbide ceramic layer in the wear-resistant layer have extremely high hardness and wear resistance, can effectively resist the friction and impact generated when the material moves in the rotary kiln, greatly reduce the wear degree of the inner wall, extend the service life of the rotary kiln, and can maintain good wear resistance even when processing high-hardness and high-abrasive materials, reducing the frequency of equipment maintenance and replacement;

[0020] 2. In the utility model, the polytetrafluoroethylene layer and the epoxy resin layer in the anti-corrosion layer have excellent chemical corrosion resistance, can resist the erosion of various chemical substances in the rotary kiln, prevent the inner wall from being corroded by chemical substances, reduce the structural damage and performance degradation caused by corrosion, and ensure the stable operation of the rotary kiln;

[0021] 3. In the utility model, the nickel-based alloy layer and the heat-resistant stainless steel layer in the reinforcing layer provide strong mechanical strength and high-temperature resistance, can withstand the high temperature, high pressure and complex mechanical stress during the operation of the rotary kiln, and ensure that the inner wall structure does not deform or crack under harsh conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1This is the overall structural schematic diagram of the wear-resistant and corrosion-resistant structure on the inner wall of a rotary kiln of the present utility model;

[0023] Figure 2 This is the overall structural schematic diagram of the wear-resistant layer of the wear-resistant and corrosion-resistant structure on the inner wall of a rotary kiln of the present utility model;

[0024] Figure 3 This is the overall structural schematic diagram of the corrosion-resistant layer of the wear-resistant and corrosion-resistant structure on the inner wall of a rotary kiln of the present utility model;

[0025] Figure 4 This is the overall structural schematic diagram of the strengthening layer of the wear-resistant and corrosion-resistant structure on the inner wall of a rotary kiln of the present utility model.

[0026] In the figure: 1, base layer; 2, wear-resistant layer; 3, corrosion-resistant layer; 4, strengthening layer; 21, alumina ceramic layer; 22, silicon carbide ceramic layer; 23, first adhesive layer; 31, polytetrafluoroethylene layer; 32, epoxy resin layer; 33, second adhesive layer; 41, nickel-based alloy layer; 42, heat-resistant stainless steel layer; 43, third adhesive layer. Detailed implementation manners

[0027] To make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation manners.

[0028] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0031] An anti-wear and anti-corrosion structure for the inner wall of a rotary kiln, comprising a base layer 1, with a wear-resistant layer 2 adhesively connected to the front end of the base layer 1, an anti-corrosion layer 3 adhesively connected to the front end of the wear-resistant layer 2, and a strengthening layer 4 adhesively connected to the front end of the anti-corrosion layer 3.

[0032] In this embodiment, the wear-resistant layer 2 includes an alumina ceramic layer 21. A first adhesive layer 23 is fixedly connected to the front end of the silicon carbide ceramic layer 22, and the first adhesive layer 23 is adhesively connected to the rear end of the alumina ceramic layer 21. The rear end of the alumina ceramic layer 21 is adhesively connected to the front end of the base layer 1 through the first adhesive layer 23. The anti-corrosion layer 3 includes a polytetrafluoroethylene layer 31. An epoxy resin layer 32 is fixedly connected to the front end of the polytetrafluoroethylene layer 31, and a second adhesive layer 33 is adhesively connected to the rear end of the polytetrafluoroethylene layer 31. The rear end of the polytetrafluoroethylene layer 31 is adhesively connected to the front end of the silicon carbide ceramic layer 22 through the second adhesive layer 33. The strengthening layer 4 includes a nickel-based alloy layer 41. A heat-resistant stainless steel layer 42 is fixedly connected to the front end of the nickel-based alloy layer 41, and a third adhesive layer 43 is adhesively connected to the rear end of the nickel-based alloy layer 41. The rear end of the nickel-based alloy layer 41 is adhesively connected to the front end of the epoxy resin layer 32 through the third adhesive layer 43.

[0033] It should be noted that the present utility model is an anti-wear and anti-corrosion structure for the inner wall of a rotary kiln. During use, the base layer 1 serves as a basic support layer, providing initial stability and an attachment foundation for the entire structure. The alumina ceramic layer 21 and the silicon carbide ceramic layer 22 in the wear-resistant layer 2 play the main anti-wear role. Alumina ceramics have high hardness and good wear resistance, and can withstand the friction and impact generated by the movement of materials in the rotary kiln. The silicon carbide ceramic layer 22 further enhances the wear resistance. The two work together to effectively reduce the wear of the inner wall by the materials. The first adhesive layer 23 ensures the firm adhesion of these two ceramic materials to the base layer 1 and to each other, enabling the wear-resistant layer 2 to function stably. The polytetrafluoroethylene layer 31 in the anti-corrosion layer 3 has excellent chemical corrosion resistance and can resist the erosion of various chemical substances in the rotary kiln. The epoxy resin layer 32 further enhances the anti-corrosion performance and is tightly combined with the wear-resistant layer 2 through the second adhesive layer 33 to form an effective anti-corrosion barrier to prevent chemical substances from penetrating into the internal structure. The nickel-based alloy layer 41 and the heat-resistant stainless steel layer 42 in the strengthening layer 4 provide strong mechanical strength and high-temperature resistance. Nickel-based alloys have excellent high-temperature strength and oxidation resistance, and heat-resistant stainless steel increases the toughness and thermal fatigue resistance of the structure. The third adhesive layer 43 firmly connects the strengthening layer 4 to the anti-corrosion layer 3, enabling the entire structure to remain stable under high temperature, high pressure, and complex working environments, and not easily deformed or damaged. In summary, this multi-layer composite anti-wear and anti-corrosion structure effectively resists adverse factors such as wear, corrosion, and high temperature inside the rotary kiln through the synergistic effect of each layer of material, thereby extending the service life of the rotary kiln and improving its working efficiency and reliability.

[0034] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments, and what is described in the above-mentioned embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will also have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An abrasion-resistant and corrosion-proof structure for the inner wall of a rotary kiln, comprising a base layer (1), characterized in that: The front end of the base layer (1) is adhesively connected with a wear-resistant layer (2), the front end of the wear-resistant layer (2) is adhesively connected with an anti-corrosion layer (3), and the front end of the anti-corrosion layer (3) is adhesively connected with a strengthening layer (4); The wear-resistant layer (2) includes an alumina ceramic layer (21), the front end of the silicon carbide ceramic layer (22) is fixedly connected with a first adhesive layer (23), and the rear end of the alumina ceramic layer (21) is adhesively connected with the first adhesive layer (23).

2. The wear-resistant and corrosion-proof structure for the inner wall of a rotary kiln according to claim 1, characterized in that: The rear end of the alumina ceramic layer (21) is adhesively connected to the front end of the base layer (1) through the first adhesive layer (23).

3. A wear-resistant and corrosion-proof structure for the inner wall of a rotary kiln according to claim 1, characterized in that: The anti-corrosion layer (3) includes a polytetrafluoroethylene layer (31), the front end of the polytetrafluoroethylene layer (31) is fixedly connected with an epoxy resin layer (32), and the rear end of the polytetrafluoroethylene layer (31) is adhesively connected with a second adhesive layer (33).

4. The wear-resistant and corrosion-proof structure for the inner wall of a rotary kiln according to claim 3, characterized in that: The rear end of the polytetrafluoroethylene layer (31) is adhesively connected to the front end of the silicon carbide ceramic layer (22) through the second adhesive layer (33).

5. A wear-resistant and anti-corrosive structure for the inner wall of a rotary kiln according to claim 3, characterized in that: The strengthening layer (4) includes a nickel-based alloy layer (41), the front end of the nickel-based alloy layer (41) is fixedly connected with a heat-resistant stainless steel layer (42), and the rear end of the nickel-based alloy layer (41) is adhesively connected with a third adhesive layer (43).

6. The wear-resistant and corrosion-proof structure for the inner wall of a rotary kiln according to claim 5, wherein: The rear end of the nickel-based alloy layer (41) is adhesively connected to the front end of the epoxy resin layer (32) through the third adhesive layer (43).

Images