Polar plate composite conductive beam for hydrometallurgy and preparation method thereof

Abstract

The invention provides a pole plate composite conductive beam for hydrometallurgy and a preparation method thereof, the composite conductive beam comprises a connecting plate, a conductive part, a structure reinforcing part and a corrosion-resistant coating layer, the connecting plate is connected with the conductive part, the structure reinforcing part is fixedly arranged outside the conductive part, and the corrosion-resistant coating layer is arranged on the outermost layer. The structure reinforcing part is fixed outside the conductive part, so that the strength of the conductive material is improved; the corrosion-resistant coating layer is good in corrosion resistance and can effectively protect the internal copper conductive beam and prolong the service life of the copper conductive beam; the weight of the conductive beam is obviously increased, the problem that the traditional pure copper conductive beam is easy to shake in flowing electrolyte is effectively solved, and the stability and the safety of equipment are improved; the conductive part is a copper plate, a copper pipe or a copper rod and is good in conductivity and high in current efficiency; and after being used for a certain time, the copper material can be repaired and can be reused, so that the resource waste is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of electrolysis equipment, and in particular relates to a plate composite conductive beam for hydrometallurgy and a preparation method thereof. Background Art

[0002] In traditional electrolysis equipment, conductive beams are usually made of pure metals such as copper, copper rods, and copper tubes. Composite materials such as titanium-copper composites, titanium-steel composites, and stainless steel-copper composites are also used. The main composite methods are thermal composites, mechanical composites, and explosive composites. These materials have the following main problems: 1. Pure copper has poor corrosion resistance and low strength; 2. The composite materials produced by traditional methods are expensive and difficult to process. In particular, the conductive beams produced by mechanical compounding methods have high bonding resistance and poor conductivity. 3. The above-mentioned conductive beams generally have the problem of being light in weight. During use, they are very easy to shake in the flowing electrolysis system, causing a short circuit in the system. In the worst case, the service life of the plate is shortened, and in the worst case, serious production accidents are caused. 4. Composite materials produced by traditional methods are difficult to recycle. Summary of the Invention

[0003] The object of the present invention is to provide a composite conductive beam for hydrometallurgy electrode plates, which has good corrosion resistance, good stability, good conductivity and can be recycled.

[0004] The object of the present invention is to provide a method for preparing a composite conductive beam of a plate for hydrometallurgy.

[0005] To this end, the technical solutions provided by the present invention are as follows: A composite conductive beam with a plate for hydrometallurgy, comprising a connecting plate, a conductive part, a structural reinforcement part and a corrosion-resistant coating layer. The connecting plate is connected to the conductive part, the structural reinforcement part is fixed to one side of the connecting plate or the conductive part, or the structural reinforcement part is fixed to two opposite sides or circumferential directions of the conductive part, and the corrosion-resistant coating layer is arranged on the outermost layer. The conductive part is a copper plate, a copper tube or a copper rod.

[0006] The structural reinforcement part is made of titanium, steel, alloy plates, pipes, and bars.

[0007] The corrosion-resistant coating layer includes lead, and the thickness of the corrosion-resistant coating layer is 0.01 to 150 mm.

[0008] The connecting plate is a plate made of titanium, stainless steel, nickel or lead.

[0009] The thickness of the structural reinforcement part and the connecting plate is 0.1-120 mm, the diameter of the rod is 0.1-120 mm, the outer diameter of the pipe is 0.1-120 mm, and the inner diameter of the pipe is 0.1-115 mm.

[0010] When the conductive part is a copper plate and the connecting plate is one in the thickness direction of the copper plate, the conductive part and the connecting plate are connected to form a thickened conductive material, and the structural reinforcement part is provided on one side of the thickened conductive material; When the conductive part is a copper plate and there are two connecting plates along the thickness direction of the copper plate, the conductive part and the structural reinforcement part are connected and arranged between the two connecting plates; When the conductive part is two copper plates, there are one or more connecting plates along the length direction of the copper plates and they are arranged between the two copper plates, and the structural reinforcement parts are respectively arranged on the other side of the two copper plates; When the conductive part is a copper rod, the connecting plate is connected to the lower end of the copper rod, and the structural reinforcement part is arranged in the circumference of the conductive part.

[0011] The structural reinforcement part and the conductive part are connected by bolts, welding or riveting; the connecting plate and the conductive part are fixed by one or more mechanical means including bolt connection, welding, riveting, mortise and tenon joints.

[0012] The corrosion-resistant coating layer is cast or rolled on the outermost layer of the conductive beam.

[0013] A method for preparing a composite conductive beam of a hydrometallurgical electrode plate comprises the following steps: Step 1) Select copper plates, copper rods or copper tubes as the conductive parts according to actual needs and process them into the required specifications; Step 2) Fix the connecting plate as a whole or in pieces to the conductive part; Step 3) Select a structural reinforcement layer based on the stress conditions of the conductive beam and fix and strengthen the conductive part; Step 4) Casting a layer of lead on the outermost layer as a corrosion-resistant coating layer to obtain a plate composite conductive beam.

[0014] The beneficial effects of the present invention are: The electrode plate composite conductive beam provided by the present invention has a structural reinforcement part fixed on the conductive part, which improves the strength of the conductive material; the corrosion-resistant coating has good corrosion resistance, can effectively protect the internal copper conductive beam, and extend its service life; and significantly increases the weight of the conductive beam, effectively solving the problem that the traditional pure copper conductive beam is easy to shake in the flowing electrolyte, and improves the stability and safety of the equipment; the conductive part is a copper plate, copper tube or copper rod, which has good conductivity and high current efficiency; compared with traditional titanium-copper composite materials and stainless steel-clad copper composite materials, the present invention adopts common metal materials such as lead, copper, and steel, which is low in cost and has a higher cost performance; after a certain period of use, the outermost corrosion-resistant lead layer can be removed, and the original conductive layer and the reinforced structural layer can be continuously utilized, and a layer of lead can be cast or rolled on its outermost layer as a corrosion-resistant coating to complete the repair of the electrode plate composite conductive beam. The copper material, the reinforced structural layer, and the copper material can be reused, reducing resource waste.

[0015] The tensile strength of the composite conductive beam of the present invention is ≥480MPa and can be as high as 520MPa; the corrosion rate is ≤0.08mm / year and as low as 0.05mm / year; the copper utilization rate after repair is ≥90%, the repair cost is only 30% of that of a new product, and the vibration displacement is ≤3.2mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of a first embodiment of the present invention; Figure 2 is a side view of a first embodiment of the present invention; Figure 3 It is a front view of a second embodiment of the present invention; Figure 4 It is a front view of a third embodiment of the present invention; Figure 5 is a front view of a fourth embodiment of the present invention; Figure 6 is a side view of a fourth embodiment of the present invention; Figure 7 is a front view of a fifth embodiment of the present invention; Figure 8 It is the main view of the conductive beam of the comparative scale; Figure 9 It is a side view of a comparative conductive beam.

[0017] In the figure: 1. Conductive part; 2. Structural reinforcement part; 3. Corrosion-resistant coating; 4. Connecting plate. DETAILED DESCRIPTION

[0018] The following describes the embodiments of the present invention through specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0019] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so as to provide a thorough and complete disclosure of the present invention and fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments shown in the accompanying drawings is not intended to limit the present invention. In the accompanying drawings, identical elements are denoted by the same reference numerals.

[0020] Unless otherwise specified, the terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art. Furthermore, it is understood that terms defined in commonly used dictionaries should be understood to have meanings consistent with the context of their relevant fields and should not be interpreted as idealized or overly formal.

[0021] Example 1 The present invention provides a composite conductive beam of a plate for hydrometallurgy, comprising a connecting plate 4, a conductive part 1, a structural reinforcement part 2 and a corrosion-resistant coating layer 3. The connecting plate 4 is connected to the conductive part 1, the structural reinforcement part 2 is fixed to one side of the connecting plate 4 or the conductive part 1, or the structural reinforcement part 2 is fixed to two opposite sides or circumferential directions of the conductive part 1, and the corrosion-resistant coating layer 3 is arranged on the outermost layer. The conductive part 1 is a copper plate, a copper tube or a copper rod.

[0022] The structural reinforcement part 2 is made of titanium, steel, alloy plates, pipes, and bars.

[0023] The corrosion-resistant coating 3 includes lead and has a thickness of 0.01-150 mm. The corrosion-resistant coating 3 provides excellent corrosion resistance, effectively protecting the internal copper conductive beam and extending its service life. Furthermore, the lead layer increases the weight of the conductive beam, preventing it from shaking during use. Therefore, the thickness is determined based on actual needs.

[0024] The connecting plate 4 is a plate made of titanium, stainless steel, nickel or lead.

[0025] The thickness of the structural reinforcement part 2 and the connecting plate 4 is 0.1-120 mm, the diameter of the rod is 0.1-120 mm, the outer diameter of the pipe is 0.1-120 mm, and the inner diameter of the pipe is 0.1-115 mm. The dimensions of the pipe, plate, and rod are determined according to actual needs.

[0026] The structural reinforcement part 2 and the conductive part 1 are connected by bolts, welding or riveting; The connecting plate 4 and the conductive part 1 are fixed by one or more mechanical means including bolt connection, welding, riveting, and mortise and tenon joints.

[0027] The corrosion-resistant coating layer 3 is formed on the outermost layer of the conductive beam by casting or rolling.

[0028] Rolling: The conductive beam is directly inserted into the corrosion-resistant metal tube, and then a press is used to perform high-intensity extrusion in the middle of the tube to achieve rolling of the corrosion-resistant metal tube and the conductive beam.

[0029] The electrode composite conductive beam for hydrometallurgy provided by the present invention has a structural reinforcement part 2 fixed to the conductive part 1, thereby improving the strength of the conductive material; the corrosion-resistant coating layer 3 has good corrosion resistance and can effectively protect the internal copper conductive beam and extend its service life; the conductive part 1 is a copper plate, copper tube or copper rod with good conductivity and high current efficiency; compared with traditional titanium-copper composite materials and stainless steel-clad copper composite materials, the present invention uses common metal materials such as lead, copper, and steel, which is low in cost and has a higher cost-effectiveness.

[0030] Example 2 Based on Example 1, this example provides a composite conductive beam of a plate for hydrometallurgy, comprising a connecting plate 4 , a conductive portion 1 , a structural reinforcement portion 2 and a corrosion-resistant coating 3 .

[0031] In this embodiment, if Figure 1 、 Figure 2 As shown, the conductive part 1 is a copper plate, and two connecting plates 4 are provided along the thickness direction of the copper plate. The conductive part 1 and the structural reinforcement part 2 are connected and arranged between the two connecting plates 4, and the corrosion-resistant coating layer 3 is provided on the outermost layer. Preparation process: Step 1) Select a copper plate, copper rod or copper tube as the conductive part 1 according to the requirements and process it into the required specifications; Step 2) Selecting the structural reinforcement part 2 to reinforce the conductive part 1; Step 3) Fix two 4mm*50mm*1100mm (thickness*width*length) titanium plates tightly to the reinforced conductive material by various mechanical means such as bolt connection, welding, riveting, etc. Figure 1 As shown; Step 4) Pour an 80mm lead layer on the outermost layer.

[0032] In this embodiment, the conductive part 1 is a 20mm*20mm*1100mm copper plate; the structural reinforcement part 2 is a 5mm*20mm*1100mm stainless steel plate; the connecting plate 4 is two 4mm*50mm*1100 titanium plates, and the corrosion-resistant coating 3 is an 80mm lead layer.

[0033] Example 3 Based on Example 1, this embodiment provides a hydrometallurgical electrode composite conductive beam, comprising a connecting plate 4, a conductive portion 1, a structural reinforcement portion 2, and a corrosion-resistant coating layer 3. Figure 2 As shown, the conductive part 1 is a copper plate, and a connecting plate 4 is set along the thickness direction of the copper plate. After the conductive part 1 and the connecting plate 4 are connected, the structural reinforcement part 2 is set on the other side of the connecting plate 4, and the corrosion-resistant coating layer 3 is set on the outermost layer. Preparation process: Step 1) Select a copper plate, copper rod or copper tube as the conductive part 1 according to the requirements and process it into the required specifications; Step 2) A 5mm*45mm*1300mm titanium plate is tightly fixed to the conductive part 1 by various mechanical means such as bolt connection, welding, and riveting; Step 3) Use the structural reinforcement part 2 to strengthen the conductive part 1 by various mechanical means such as bolt connection, welding, riveting, etc. Figure 3 As shown; Step 4) Pour a 50mm lead layer on the outermost layer.

[0034] In this embodiment, the conductive part 1 is a 15mm*25mm*1300mm copper plate; the structural reinforcement part 2 is a 5mm*25mm*1300mm stainless steel plate; the connecting plate 4 is a 5mm*45mm*1300mm titanium plate, and the corrosion-resistant coating 3 is a 50mm lead layer.

[0035] Example 4 Based on Example 1, this embodiment provides a composite conductive beam of a plate for hydrometallurgy, including a connecting plate 4, a conductive part 1, a structural reinforcement part 2 and a corrosion-resistant coating layer 3. The connecting plate 4 is connected to the conductive part 1, the structural reinforcement part 2 is fixed outside the conductive part 1, and the corrosion-resistant coating layer 3 is arranged on the outermost layer. Preparation process: Step 1) Select two copper plates as the conductive part 1 according to the requirements and process them into the required specifications; Step 2) The 5mm*50mm*1000mm titanium plate is tightly fixed between the two copper plates using various mechanical methods such as bolt connection, welding, and riveting; Step 3) Prepare the reinforcement layer: Use 3mm*30mm*1000mm stainless steel plate and use various mechanical methods such as bolt connection, welding, riveting, etc. to tightly fix it to the outside of the copper plate prepared in step 2 to strengthen the strength of the copper plate. Figure 4 shown.

[0036] Step 4) Pour a 3mm lead layer on the outermost layer.

[0037] In this embodiment, the conductive part 1 is two 10mm*30mm*1000mm copper plates; the structural reinforcement part 2 is a 3mm*30mm*1000mm stainless steel plate; the connecting plate 4 is a 5mm*50mm*1000mm titanium plate, and the corrosion-resistant coating 3 is a 3mm lead layer.

[0038] Example 5 Based on Example 1, this embodiment provides a composite conductive beam of a plate for hydrometallurgy, including a connecting plate 4, a conductive part 1, a structural reinforcement part 2 and a corrosion-resistant coating layer 3. The connecting plate 4 is connected to the conductive part 1, the structural reinforcement part 2 is fixed outside the conductive part 1, and the corrosion-resistant coating layer 3 is arranged on the outermost layer. Preparation process: Step 1) Select two copper plates as the conductive part 1 according to the requirements and process them into the required specifications; Step 2) Three 5mm*50mm*150mm titanium plates are evenly fixed between the two copper plates using various mechanical methods such as bolt connection, welding, and riveting.

[0039] Step 3) Prepare the reinforcement layer: Use 3mm*30mm*1000mm stainless steel plate and use various mechanical methods such as bolt connection, welding, riveting, etc. to tightly fix it on the outside of the thick copper plate prepared in step 2 to strengthen the copper plate strength. Figure 5 、 Figure 6 shown.

[0040] 4) Pour a 15mm lead layer on the outermost layer.

[0041] In this embodiment, the conductive part 1 is two 10mm*30mm*1000mm copper plates; the structural reinforcement part 2 is a 3mm*30mm*1000mm stainless steel plate; the connecting plate 4 is three 5mm*50mm*150mm titanium plates, and the corrosion-resistant coating 3 is a 15mm lead layer.

[0042] Example 6 Based on Example 1, this embodiment provides a composite conductive beam of a plate for hydrometallurgy, including a connecting plate 4, a conductive part 1, a structural reinforcement part 2 and a corrosion-resistant coating layer 3. The connecting plate 4 is connected to the conductive part 1, the structural reinforcement part 2 is fixed outside the conductive part 1, and the corrosion-resistant coating layer 3 is arranged on the outermost layer. Preparation process: 1) Processing copper rods, titanium plates and stainless steel plates into special-shaped parts that can be tightly joined together through cutting, milling, boring and other mechanical processing methods; 2) Use one or more methods such as mortise and tenon, welding, riveting, etc. to fix the titanium plate on the copper rod and the stainless steel plate on the outside of the copper rod to strengthen the structure; Figure 7 As shown; 3) Pour a 3mm lead layer on the outermost layer.

[0043] In this embodiment, the conductive part 1 is a copper rod, the structural reinforcement part 2 is a stainless steel plate, and the connecting plate 4 is a titanium plate.

[0044] Comparative example (pure copper conductive beam) The conductive beam comprises a connecting plate 4, a conductive portion 1 and a corrosion-resistant coating 3. Figure 6 shown.

[0045] Preparation process: Step 1) Select two copper plates as the conductive part 1 according to the requirements and process them into the required specifications; 2) Three 5mm*50mm*150mm titanium plates are evenly fixed between two copper plates using various mechanical methods such as bolt connection, welding, and riveting.

[0046] 3) Pour a 6mm lead layer on the outermost layer. Figure 8 and Figure 9 shown.

[0047] In this embodiment, the conductive part 1 is two 10mm*30mm*1000mm copper plates; the conductive part 1 is made of a 3mm*30mm*1000mm stainless steel plate; the connecting plate 4 is three 5mm*50mm*150mm titanium plates, and the corrosion-resistant coating 3 is a 6mm lead layer.

[0048] Performance testing: The following performance tests were conducted on the composite conductive beams prepared in Examples 2-5 and the composite conductive beam prepared in the comparative example. The results are shown in Table 1.

[0049] 1. Tensile strength: Universal material testing machine (GB / T 228.1-2021); 2. Corrosion rate (mm / year): Sulfuric acid immersion method (GB / T 10124-2022), simulated electrolyte (10% H2SO4, 50°C); 3. Vibration displacement amplitude (mm): Vibration table simulation (amplitude 5mm, frequency 20Hz), measure the maximum displacement; 4. Resistivity (μΩ·cm): Four-probe method (GB / T 1552-1995); 5. Strength retention after repair: After stripping the lead layer and re-coating, the cycle test is repeated 3 times (GB / T 4338-2006).

[0050] Table 1 Performance test results of each conductive beam

[0051] The experimental results above show that compared to the comparative example (pure copper), the present invention achieves a tensile strength increase of approximately 136% and a corrosion rate reduction of up to 95.8%. Compared to the comparative example's short-circuit rate of 12%, the present invention's short-circuit rate is only 1.5%, a reduction of 87.5%. Vibration displacement is reduced by 79%, the performance retention rate of the repaired conductive beam exceeds 90%, and the copper recycling rate is increased by 60%.

[0052] The above examples are merely illustrative of the present invention and do not limit the scope of protection of the present invention. Any design that is identical or similar to the present invention falls within the scope of protection of the present invention.

Claims

1. A composite conductive beam for hydrometallurgy electrode, characterized by: It includes a connecting plate, a conductive part, a structural reinforcement part and a corrosion-resistant coating layer. The connecting plate and the conductive part are connected, the structural reinforcement part is fixed on one side of the connecting plate or the conductive part, or the structural reinforcement part is fixed on two opposite sides or circumferentially of the conductive part, and the corrosion-resistant coating layer is arranged on the outermost layer.

2. The electrode composite conductive beam for hydrometallurgy according to claim 1, characterized in that: The conductive part is a copper plate, a copper tube or a copper rod.

3. The electrode composite conductive beam for hydrometallurgy according to claim 1, characterized in that: The structural reinforcement part is made of titanium, steel, alloy plates, pipes, and bars.

4. The electrode composite conductive beam for hydrometallurgy according to claim 1, characterized in that: The corrosion-resistant coating layer includes lead, and the thickness of the corrosion-resistant coating layer is 0.01-150 mm.

5. The electrode composite conductive beam for hydrometallurgy according to claim 1, characterized in that: The connecting plate is a plate made of titanium, stainless steel, nickel or lead.

6. The electrode composite conductive beam for hydrometallurgy according to claim 3, characterized in that: The thickness of the structural reinforcement part and the connecting plate is 0.1~120mm, the diameter of the rod is 0.1~120mm, the outer diameter of the pipe is 0.1~120mm, and the outer diameter of the pipe is 0.1~115mm.

7. The electrode composite conductive beam for hydrometallurgy according to claim 2, characterized in that: When the conductive part is a copper plate and the connecting plate is one in the thickness direction of the copper plate, the conductive part and the connecting plate are connected to form a thickened conductive material, and the structural reinforcement part is provided on one side of the thickened conductive material; When the conductive part is a copper plate and there are two connecting plates along the thickness direction of the copper plate, the conductive part and the structural reinforcement part are connected and arranged between the two connecting plates; When the conductive part is two copper plates, there are one or more connecting plates along the length direction of the copper plates and they are arranged between the two copper plates, and the structural reinforcement parts are respectively arranged on the other side of the two copper plates; When the conductive part is a copper rod, the connecting plate is connected to the lower end of the copper rod, and the structural reinforcement part is arranged in the circumference of the conductive part.

8. The electrode composite conductive beam for hydrometallurgy according to any one of claims 1 to 6, characterized in that: The structural reinforcement part and the conductive part are connected by bolts, welding or riveting; The connecting plate and the conductive part are fixed by one or more mechanical means including bolt connection, welding, riveting, and mortise and tenon joints.

9. The electrode composite conductive beam for hydrometallurgy according to any one of claims 1 to 6, characterized in that: The corrosion-resistant coating layer is cast or rolled on the outermost layer of the conductive beam.

10. The method for preparing a composite conductive beam for a hydrometallurgical electrode plate according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1) Select copper plates, copper rods or copper tubes as the conductive parts according to actual needs and process them into the required specifications; Step 2) Fix the connecting plate as a whole or in pieces to the conductive part; Step 3) Select a structural reinforcement layer based on the stress conditions of the conductive beam and fix and strengthen the conductive part; Step 4) Casting a layer of lead on the outermost layer as a corrosion-resistant coating layer to obtain a plate composite conductive beam.

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