Corrosion-resistant flotation tank lining structure

Abstract

This utility model discloses a corrosion-resistant flotation cell liner structure, including a base plate and a liner plate body. Beneficial effects: This utility model uses a base plate that is inserted and fixed to the liner plate body. A trapezoidal groove is formed on the front face of the base plate, and a trapezoidal strip is formed on the back face of the liner plate body. During assembly, the trapezoidal strip can be inserted into the trapezoidal groove along one end to complete the insertion and fixing. When a liner plate body is damaged, the corresponding base plate can be removed, the damaged liner plate body can be slid off, and then a new liner plate body can be re-inserted. Simultaneously, the liner plate body surface has no holes, avoiding stress concentration at holes and preventing damage at the opening location. It also avoids the problem of slurry corrosion of bolts due to poor sealing at holes, improving corrosion resistance, overall stability, and service life. Furthermore, the integrated liner plate body has a smoother front face, reducing slurry residue and making it easier to maintain and clean.

Description

Technical Field

[0001] This utility model relates to the field of mineral processing equipment technology, and more specifically, to a corrosion-resistant flotation cell liner structure. Background Technology

[0002] In related technologies, flotation cells used to hold ore slurry are all welded from steel plates. During use, corrosion of the cell body by the ore slurry mainly occurs in two ways: first, physical wear corrosion caused by the vigorous agitation and scouring of the ore slurry; and second, chemical corrosion caused by various flotation chemicals in the ore slurry, such as sodium carbonate, copper sulfate, and sodium sulfide. Corrosion can cause the cell body to thin or leak, requiring repair welding, and in severe cases, complete replacement.

[0003] After searching, it was found that application number CN201520432858.5, entitled "Flotation Cell for Holding Mineral Slurry and Flotation Machine Thereof", proposed a flotation cell and flotation machine that uses wear-resistant plates as lining structure and is fixed by threaded fasteners. The threaded fasteners need to pass through the inner wall and wear-resistant plates for fixation. The surface of the wear-resistant plates needs to be opened for the threaded fasteners to pass through. The through-hole position not only easily causes stress concentration, affecting the stability of the structure, but also causes the surface to be uneven after the threaded fasteners are installed, which easily causes slurry to adhere and remain, affecting the later cleaning and maintenance. In addition, the threaded fastener position needs to be sealed separately. The threaded fasteners are also easy to be corroded, affecting the overall service life and corrosion resistance. Further improvements can be made.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a corrosion-resistant flotation cell liner structure, which has the advantages of easy replacement, improved corrosion resistance, high strength, light weight, long service life, and convenient cleaning and maintenance, thereby solving the problems mentioned in the background technology.

[0006] To achieve the aforementioned advantages of convenient replacement, improved corrosion resistance, high strength, light weight, long service life, and easy cleaning and maintenance, the specific technical solution adopted by this utility model is as follows: A corrosion-resistant flotation cell liner structure includes a base plate and a liner plate body. The front face of the base plate has a trapezoidal groove, and the back face of the liner plate body has trapezoidal strips. The back face of the base plate has longitudinal and transverse ribs arranged in both directions, and a sleeve is welded between the longitudinal and transverse ribs on the back face of the base plate.

[0007] Furthermore, the liner plate body is arranged in four groups.

[0008] Furthermore, sealing strips are tightly packed between the liner plates.

[0009] Furthermore, the horizontal and vertical ribs are of the same height.

[0010] Furthermore, the sleeve height is equal to the transverse rib height, and the inner wall of the sleeve is provided with internal threads.

[0011] Furthermore, the sleeve is arranged with bolt holes corresponding to the surface of the flotation cell.

[0012] Furthermore, multiple sets of trapezoidal grooves are arranged at equal intervals, and the inner walls of the trapezoidal grooves are roughened.

[0013] Furthermore, the tolerance between the cross-sectional dimensions of the trapezoidal strip and the cross-sectional dimensions of the trapezoidal groove is less than 0.1 mm.

[0014] Compared with the prior art, this utility model provides a corrosion-resistant flotation cell liner structure, which has the following beneficial effects: (1) This utility model adopts a base plate that is inserted and fixed to the liner plate body. The front face of the base plate is provided with a trapezoidal groove, and the back face of the liner plate body is provided with a trapezoidal strip. During assembly, the trapezoidal strip can be inserted into the trapezoidal groove along one end of the trapezoidal groove to complete the insertion and fixing. When a liner plate body is damaged, the worker can remove the corresponding base plate, slide off the damaged liner plate body, and then re-insert the new liner plate body. At the same time, no holes are opened on the surface of the liner plate body, which avoids the problem of stress concentration at the holes and the problem of damage at the opening position. It also avoids the problem of slurry corrosion of bolts due to poor sealing at the holes, which improves corrosion resistance, overall stability and service life. At the same time, the front face of the integrated liner plate body is smoother, which reduces the residue of slurry and makes it easier to maintain and clean.

[0015] (2) This utility model adopts horizontal and vertical ribs and a sleeve located between the horizontal and vertical ribs. The horizontal and vertical ribs play the role of back reinforcement, which improves the overall rigidity and strength of the substrate and does not cause the substrate to be too heavy. It is easy to reduce the overall weight and facilitate assembly. The sleeve is opened with corresponding fixing bolt holes on the surface of the flotation cell. When installing the substrate, the sleeve is aligned with the fixing bolt holes on the surface of the flotation cell and connected and fixed by fixing bolts. This ensures the connection strength while avoiding the problem of opening holes in the substrate, improving the integrity of the substrate and further improving the structural strength and stability. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the back elevation of the corrosion-resistant flotation cell liner structure proposed in this utility model. Figure 2 This is a front elevation view of the corrosion-resistant flotation cell liner structure proposed in this utility model. Figure 3 This is an enlarged view of node A of the corrosion-resistant flotation cell liner structure proposed in this utility model; Figure 4 This is an enlarged view of node B of the corrosion-resistant flotation cell liner structure proposed in this utility model.

[0018] In the picture: 1. Substrate; 2. Liner plate; 3. Horizontal rib; 4. Vertical rib; 5. Sleeve; 6. Trapezoidal groove; 7. Trapezoidal strip; 8. Sealing strip. Detailed Implementation

[0019] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0020] According to an embodiment of the present invention, a corrosion-resistant flotation cell liner structure is provided.

[0021] Now combined with the appendix Figure 1-4 The present invention will be further described with reference to the specific embodiments. Figure 1 and Figure 4 The corrosion-resistant flotation cell liner structure according to the present invention is an innovative structure carefully designed to improve the corrosion resistance, stability and ease of maintenance of the equipment, taking into account the working environment characteristics of the flotation cell. Its core consists of a base plate 1 and a liner plate 2, which work together to form a highly efficient protection system. As the main load-bearing component of the entire liner structure, substrate 1 plays a crucial connecting and supporting role in the flotation cell. Its shape, size, and quantity are not arbitrarily set, but precisely determined through professional measurement and calculation, strictly based on the internal dimensions and shape of the flotation cell. In practical applications, the design of substrate 1 fully considers the complex working conditions of the flotation cell, ensuring it can withstand various forces such as slurry scouring, the impact force generated by the agitator impeller, and temperature changes. A trapezoidal groove 6 is formed on the front face of substrate 1. The design of this trapezoidal groove 6 has been mechanically optimized, and its trapezoidal structure provides a good mechanical interlocking effect, ensuring a stable connection with the liner plate 2. The back face of substrate 1 has longitudinal ribs 4 and transverse ribs 3 arranged longitudinally and transversely. The longitudinal ribs 4 and transverse ribs 3 are integrated with substrate 1, a design achieved through advanced casting or forging processes. This makes the longitudinal rib 4, transverse rib 3, and substrate 1 an inseparable whole, effectively improving the overall rigidity and strength of substrate 1. Substrate 1 is made of high-performance alloy material, which has been determined through extensive experiments and screening. It has high strength, high toughness, and good corrosion resistance. Its composition includes a variety of alloying elements such as chromium and molybdenum. These elements can form a dense oxide film on the alloy surface, effectively resisting the corrosion of acid and alkali substances in the slurry. The alloy material can be integrally formed with the longitudinal rib 4 and transverse rib 3, which not only ensures the integrity of the structure but also avoids stress concentration and corrosion weak points that may be caused by welding and other connection methods. In addition, sleeves 5 are welded between the longitudinal rib 4 and transverse rib 3 on the back side of substrate 1. Multiple sets of sleeves 5 are arranged, and their material is the same as that of substrate 1, ensuring the consistency of overall corrosion resistance and mechanical properties. The liner plate 2 is made of carbon ceramic plate, a new type of high-performance composite material. Carbon ceramic plate combines the lightweight and high toughness of carbon materials with the high hardness, high wear resistance, and excellent corrosion resistance of ceramic materials. Its internal microstructure exhibits a unique carbon-ceramic composite phase. The carbon phase imparts good toughness, effectively absorbing external impact forces and preventing cracks in the liner plate due to stress; the ceramic phase provides extremely high hardness and chemical stability, enabling it to resist the erosion of various chemicals in the slurry. The use of this material makes the liner plate 2 not only excellent in wear and corrosion resistance but also structurally stable and strong, allowing it to work stably for a long time in harsh flotation environments. The back face of the liner plate 2 has a trapezoidal strip 7 that cooperates with the trapezoidal groove 6 on the front face of the substrate 1. During assembly, the trapezoidal strip 7 can be inserted into the trapezoidal groove 6 along one end. Utilizing the wedge-shaped self-locking principle of the trapezoidal structure, the insertion and fixing can be completed. This connection method is simple to operate, requires no complex tools or processes, and effectively improves installation efficiency. When a liner plate 2 is damaged, the worker can remove the corresponding base plate 1 and then easily slide off the damaged liner plate 2. A new liner plate 2 can then be inserted to complete the replacement. Furthermore, the liner plate 2 has no holes on its surface, a highly innovative design. In traditional liner structures, holes easily lead to stress concentration, making the opening a weak point in the structure, prone to damage under the scouring of slurry and external forces. In addition, sealing the holes has always been a problem hindering the equipment's corrosion resistance; poor sealing allows slurry to seep in, corroding the connecting bolts and affecting the stability of the entire liner structure. This invention effectively solves these problems by avoiding holes on the surface of the liner plate 2, significantly improving the liner's corrosion resistance, enhancing overall stability and service life. Simultaneously, the integrated liner plate 2 has a smoother front surface, greatly reducing slurry residue, making cleaning easier and more convenient, and reducing maintenance costs and labor intensity.

[0022] Reference Figure 1 and Figure 2 The liner plate 2 is arranged in four sets, symmetrically in pairs. This symmetrical arrangement is carefully designed to fully consider the convenience of installation and disassembly. The symmetrical structure allows the liner plate 2 to be slidably pulled out along both ends of the base plate 1. When performing maintenance and replacement operations, the staff does not need complicated tools and cumbersome steps. They only need to apply a little force from both ends of the base plate 1 to pull out the damaged liner plate 2, and then insert the new liner plate 2 along the same path, which greatly improves maintenance efficiency and shortens equipment downtime.

[0023] Reference Figure 1 and Figure 2A sealing strip 8 is tightly packed between the liner plates 2. The sealing strip 8 is made of a specially formulated corrosion-resistant rubber material. This rubber material has been specially treated and has excellent acid and alkali resistance and oil resistance. It can maintain good elasticity and sealing performance for a long time in the corrosive environment of the slurry. When the sealing strip 8 is squeezed by the liner plates 2, it will produce elastic deformation and tightly seal the gaps between the liner plates 2, thereby achieving a good sealing effect, effectively preventing slurry leakage and preventing it from corroding the substrate 1 and the inner wall of the flotation cell. At the same time, high-performance sealant can also be used to seal between the substrates 1 to further enhance the sealing performance, forming multiple protections to minimize the corrosion of the inner wall of the flotation cell by the slurry and extend the service life of the flotation cell.

[0024] Reference Figure 1 and Figure 2 The horizontal ribs 3 and the vertical ribs 4 are of the same height and arranged perpendicular to each other. The height of the horizontal ribs 3 and the vertical ribs 4 is not less than the thickness of the substrate 1. The flush design of the two is of great significance. This design allows the horizontal ribs 3 and the vertical ribs 4 to fit tightly against the inner wall of the flotation cell, thereby forming independent small spaces between the horizontal ribs 3 and the vertical ribs 4 and the inner wall of the flotation cell. When slurry leakage occurs, these independent small spaces can effectively prevent the flow and diffusion of slurry, avoid causing corrosion over a larger area, control the corrosion range to a minimum, and improve the reliability and safety of the equipment.

[0025] Reference Figure 1 and Figure 2 The height of sleeve 5 is equal to the height of the transverse rib 3. Multiple sets of sleeves 5 are arranged and evenly distributed. The even distribution of sleeves 5 can ensure that the base plate 1 is subjected to uniform force during installation, avoiding the problem that the base plate 1 cannot be installed stably due to excessive or insufficient local force. In addition, the inner wall of sleeve 5 is provided with high-precision internal threads. These internal threads are finely machined and the precision level meets the national standard. They can be precisely matched with the fixing bolts, which facilitates the fixed connection with the fixing bolts and ensures the reliability and stability of the connection.

[0026] Reference Figure 1 The sleeve 5 corresponds to the bolt holes on the surface of the flotation cell. The inner diameter of the sleeve 5 is equal to the bolt hole diameter, and the outer diameter of the sleeve 5 is larger than the bolt hole outer diameter. This size design allows the top surface of the sleeve 5 to completely seal the bolt holes, further improving the sealing performance. During installation, the sleeve 5 not only plays a role in connection and fixation, but also effectively prevents the slurry from seeping in through the bolt holes, providing good protection for the bolts and the inner wall of the flotation cell.

[0027] Reference Figure 1 and Figure 3Multiple sets of trapezoidal grooves 6 are arranged at equal intervals. The design of multiple sets of trapezoidal grooves 6 can disperse the external force on the liner plate 2 and improve the stability of the connection. In addition, the inner wall of the trapezoidal groove 6 is roughened. Through special mechanical processing, a rough surface texture is formed on the inner wall of the trapezoidal groove 6, which greatly improves the friction and effectively prevents the liner plate 2 from sliding off during use, ensuring the stability of the liner structure.

[0028] Reference Figure 1 and Figure 3 The tolerance between the cross-sectional dimensions of the trapezoidal strip 7 and the cross-sectional dimensions of the trapezoidal groove 6 is less than 0.1mm. This high-precision dimensional fit tolerance is achieved through advanced processing equipment and a strict quality control system. The precise dimensional fit can reduce the shaking phenomenon between the liner plate 2 and the base plate 1, making the connection between the two tighter and further improving the stability and reliability of the entire liner structure.

[0029] Working principle: During assembly, the workers first install the substrate 1 on the inner wall of the flotation cell according to the design requirements. The sleeve 5 is then connected and fixed to the bolt holes on the surface of the flotation cell using fixing bolts. Since the sleeve 5 is opened to correspond to the fixing bolt holes on the surface of the flotation cell, and the inner diameter of the sleeve 5 is precisely matched with the diameter of the bolt holes, the installation process only requires aligning the sleeve 5 with the fixing bolt holes on the surface of the flotation cell and screwing in the fixing bolts to complete the installation of the substrate 1. This installation method ensures the connection strength, avoids drilling holes in the substrate 1, improves the integrity of the substrate 1, and further enhances the structural strength and stability. Subsequently, the trapezoidal strip 7 of the liner plate 2 is inserted along one end of the trapezoidal groove 6 of the base plate 1. Utilizing the wedge-shaped self-locking characteristic of the trapezoidal structure, the liner plate 2 and the base plate 1 are connected and fixed. Since the tolerance between the cross-sectional dimensions of the trapezoidal strip 7 and the cross-sectional dimensions of the trapezoidal groove 6 is less than 0.1mm, and the inner wall of the trapezoidal groove 6 is roughened, the liner plate 2 can be firmly fixed on the base plate 1 without slippage or detachment. During the installation of the liner plate 2, sealing strips 8 are squeezed between adjacent liner plates 2. The sealing strips 8 deform under the pressure, tightly sealing the gaps between the liner plates 2 to prevent slurry leakage. When a liner plate 2 is damaged due to long-term use, the staff can first remove the fixing bolts of the fixed base plate 1, remove the base plate 1, and then pull the damaged liner plate 2 out of the base plate 1 by sliding operation, replace it with a new liner plate 2, and then reinstall the base plate 1 to complete the entire replacement process. This modular design concept makes the maintenance and replacement of the liner structure simple and quick, greatly reducing maintenance costs and time costs. During the operation of the flotation cell, the design of the liner plate 2 without holes plays an important role. It avoids the problem of stress concentration at the holes, effectively prevents the liner from being damaged at the opening position under the action of slurry scouring and external forces. At the same time, it eliminates the hidden danger of slurry corrosion of bolts due to poor hole sealing, and significantly improves the corrosion resistance of the liner. The transverse ribs 3 and longitudinal ribs 4 serve as the back reinforcement structure of the base plate 1. By integrally molding with the base plate 1, the rigidity and strength of the base plate 1 are greatly improved without significantly increasing the overall weight, so that it can better withstand the impact of slurry and the force generated by the agitator impeller. The independent small space formed by the transverse ribs 3 and longitudinal ribs 4 and the inner wall of the flotation cell effectively prevents the diffusion of leaked slurry, protects the inner wall of the flotation cell from large-area corrosion, and ensures the long-term stable operation of the entire flotation equipment.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A corrosion-resistant flotation tank lining structure, characterized by, Including substrate (1) and lining plate body (2), the substrate (1) is opened with trapezoidal groove (6) on the front surface, the lining plate body (2) is opened with trapezoidal strip (7) on the back surface, the substrate (1) is arranged with longitudinal ridge (4) and horizontal ridge (3) on the back surface, and the longitudinal ridge (4) and horizontal ridge (3) are welded with sleeve (5) on the back surface of substrate (1) between longitudinal ridge (4) and horizontal ridge (3).

2. The corrosion-resistant flotation tank lining structure according to claim 1, characterized in that, The lining plate body (2) is arranged with four groups.

3. The corrosion-resistant flotation tank lining structure according to claim 1, characterized in that, The lining plate body (2) is arranged with sealing strip (8) between the lining plate body (2).

4. The corrosion-resistant flotation tank lining structure according to claim 1, characterized in that, The horizontal ridge (3) and longitudinal ridge (4) are the same height.

5. The corrosion-resistant flotation tank lining structure according to claim 1, characterized in that, The sleeve (5) height is equal to the horizontal ridge (3) height, and the inner wall of sleeve (5) is provided with internal thread.

6. The corrosion-resistant flotation tank lining structure according to claim 1, characterized in that, The sleeve (5) is arranged corresponding to the surface bolt hole of the flotation tank.

7. The corrosion-resistant flotation tank lining structure according to claim 1, characterized in that, The trapezoidal groove (6) is arranged with multiple groups at equal intervals, and the inner wall of trapezoidal groove (6) is subjected to roughening treatment.

8. The corrosion-resistant flotation tank lining structure according to claim 1, characterized in that, The trapezoidal strip (7) cross-sectional dimension and trapezoidal groove (6) cross-sectional dimension fit tolerance is less than 0.1mm.

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