Device for preventing short circuit between silver electrolysis anode and cathode

Abstract

The utility model discloses a device for preventing short circuit between a silver electrolysis anode and a silver electrolysis cathode, and belongs to the field of rare noble metal smelting. The device comprises two U-shaped insulating plates, one U-shaped insulating plate is clamped at one end of an anode outer frame, the other U-shaped insulating plate is clamped at the other end of the anode outer frame, and the U-shaped insulating plates are connected with the anode outer frame through bolts. According to the utility model, elemental silver crystals are blocked by the U-shaped insulating plate, so that short circuit caused by contact between the elemental silver crystals and the anode plate after growth is avoided, labor consumption of workers is reduced, and potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model belongs to the field of rare and precious metal smelting, and relates to a device for preventing short circuit between anode and cathode of silver electrolysis. Background Art

[0002] Rare and precious metals are a general term for rare metals and precious metals, mainly including: rhenium, tantalum, niobium, gold, silver and platinum group metals (platinum, palladium, rhodium, ruthenium, iridium, osmium), etc. Rare and precious metals are widely used in high-tech industries such as aerospace, electronic information, equipment manufacturing, national defense and military industry due to their excellent physical and chemical properties, high catalytic activity and strong coordination ability. They are widely used in the entire industrial system and are known as the "first high-tech metal."

[0003] At present, gold and silver can be separated by silver electrolysis. In the process of silver electrolysis, titanium plates are usually used as cathode plates and immersed in the electrolyte at the same time as anode plates. In the process of silver electrolysis, anode plates are hung on conductive rods by silver hooks, and the anode plate bodies are immersed in the electrolyte. In order to prevent the anode plates from falling off the silver hooks and into the electrolyte, an anode frame is usually provided under the conductive rods, and an anode plate bag is provided on the anode frame. In the process of electrolysis, all anode plates are placed in the anode plate bags. Even if the anode plates fall off the silver hooks, they will only fall into the anode plate bags and will not fall directly into the electrolyte. The anode frame is usually tied to the conductive rods by ropes, and the anode plate bags are usually made of soft materials, and the anode plate bags allow the electrolyte to pass through, without affecting the contact reaction between the anode plates and the electrolyte. During the silver electrolysis process, the current passes through the anode plate, and the silver and impurities in the anode plate lose electrons, become ions and enter the electrolyte. The ions in the electrolyte gain electrons at the cathode and become elemental silver attached to the cathode plate. As the electrolysis process proceeds, the elemental silver crystals on the cathode plate continue to grow, and the crystal length continues to increase. Since the cathode plate and the anode plate are parallel during the electrolysis process, the length of the elemental silver crystals increases and will pierce the anode plate bag, thereby contacting the anode plate. When the elemental silver crystals grow from the cathode plate to contact the anode plate, a path will be formed between the anode plate and the cathode plate, resulting in the current passing directly through the anode and cathode without passing through the electrolyte, causing a short circuit and affecting the normal progress of silver electrolysis.

[0004] In order to prevent the above-mentioned short circuit from occurring, a slot blocking machine is currently often used to scrape the elemental silver attached to the cathode plate back and forth. However, the slot blocking machine has a poor scraping effect on the elemental silver crystals attached to the two ends of the cathode plate, and it is often impossible to scrape them. The elemental silver crystals attached to the two ends of the cathode plate are prone to grow to contact the anode plate, causing a short circuit. In order to solve the above-mentioned situation, manual scraping of the elemental silver crystals is currently usually adopted. The staff holds a plastic sheet and observes the elemental silver crystals close to the electrolyte surface. For elemental silver crystals with a long length, the staff directly uses the plastic sheet to scrape them. On the one hand, the staff has a large workload and needs to observe and scrape the elemental silver crystals at any time. On the other hand, the staff needs to observe close to the electrolyte surface, which poses a great safety hazard.

[0005] Therefore, it is necessary to provide a device to prevent short circuit between the anode and cathode of silver electrolysis, reduce the workload of staff, and reduce the potential safety hazards in the process of preventing short circuit. Utility Model Content

[0006] In order to overcome the problems in the background technology, the utility model proposes a device for preventing short circuit between the anode and cathode of silver electrolysis, by clamping U-shaped insulating plates on both ends of the anode outer frame respectively, so that the elemental silver crystals grown at the corresponding positions on the cathode plate are separated by the U-shaped insulating plates and cannot contact the anode plate to cause a short circuit. Since the contact between the elemental silver crystals and the anode plate is directly cut off, there is no need for the staff to observe the crystallization situation and scrape the crystals, which effectively reduces the workload of the staff and also reduces safety hazards.

[0007] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0008] The device comprises two U-shaped insulating plates 1, one of which is clamped at one end of the anode outer frame 2, and the other is clamped at the other end of the anode outer frame 2, and the U-shaped insulating plate 1 is connected to the anode outer frame 2 by bolts.

[0009] Preferably, the U-shaped insulating board 1 is 25 cm long, and the widths of its three panels are all 4 cm.

[0010] Beneficial effects of the utility model:

[0011] 1. The utility model clamps U-shaped insulating plates at both ends of the anode outer frame to prevent the growth of single silver crystals on the cathode plate where the scraping effect of the groove blocking machine is poor and contact with the anode plate, thereby avoiding the single silver crystals from directly connecting the anode and cathode after growth to cause a short circuit. During the process, there is no need for staff to observe and scrape the single silver crystals at any time, which reduces the workload of staff and reduces safety hazards.

[0012] 2. The utility model connects the U-shaped insulating plate to the anode outer frame with bolts, which facilitates the installation and disassembly of the U-shaped insulating plate, making the U-shaped insulating plate more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a top view schematic diagram of the working state of the utility model.

[0014] Figure 2 It is a front view schematic diagram of the working state of the utility model.

[0015] Figure 3 This is a schematic diagram of the dimensions of the U-shaped insulation board of the utility model.

[0016] In the figure, 1-U-shaped insulating plate, 2-anode outer frame, 3-anode plate, 4-cathode plate, 5-conductive rod, 6-silver hook. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below in conjunction with specific embodiments.

[0018] like Figure 1-2 As shown, the device includes a U-shaped insulating plate 1, and there are two U-shaped insulating plates 1, wherein one U-shaped insulating plate 1 is clamped at one end of the anode outer frame 2, and the other U-shaped insulating plate 1 is clamped at the other end of the anode outer frame 2, and the U-shaped insulating plate 1 is bolted to the anode outer frame 2.

[0019] Preferably, the U-shaped insulating board 1 is 25 cm long, and the widths of its three panels are all 4 cm.

[0020] Since the silver crystals in the middle part of the cathode plate 4 can be scraped off by the slot blocking machine, the middle part of the cathode plate 4 does not need to be short-circuited. However, the scraping effect of the slot blocking machine is not good at the position of the cathode plate 4 close to the two sides of the electrolytic cell, which can easily cause the silver crystals to grow too long and contact with the anode plate 3, causing a short circuit. During the silver electrolysis process, the anode plate 3 is composed of multiple pieces and is hung on the conductive rod 5 by the silver hook 6. Therefore, the anode plate 3 is in the same vertical plane. In the current electrolysis process, the anode plate 3 is inside the anode plate bag, which is made of soft material and does not affect the U-shaped insulating plate 1 being stuck at the end of the anode outer frame 2. Figure 2For example, one U-shaped insulating plate 1 is stuck at the left end of the anode outer frame 2, and another U-shaped insulating plate 1 is stuck at the right end of the anode outer frame 2. The U-shaped insulating plate 1 stuck at the left end of the anode outer frame 2 forms a blocking effect on the left side of the anode plate 3 located at the far left, and the U-shaped insulating plate 1 stuck at the right end of the anode outer frame 2 forms a blocking effect on the right side of the anode plate 3 located at the far right. The U-shaped insulating plate 1 is connected to the anode outer frame 2 by bolts, making full use of the existing structure in the current silver electrolysis process, increasing the connection stability of the U-shaped insulating plate 1, preventing the U-shaped insulating plate 1 from being separated from the anode outer frame 2 and losing the blocking effect, while minimizing the complexity of the device of the utility model, reducing the manufacturing cost, and facilitating use.

[0021] The working process of the utility model is as follows: firstly, the anode plate, cathode plate, conductive rod, anode outer frame, anode bag and other components are installed according to the existing form, the anode plate is placed in the anode bag, and then the U-shaped insulating plate is clamped on the anode outer frame, and the connecting bolts of the U-shaped insulating plate and the anode outer frame are tightened and secured. At this time, the U-shaped insulating plate shields part of the anode plate, and then the anode plate and the cathode plate are immersed in the electrolyte to start the silver electrolysis work. When the electrolysis work is completed, the connecting bolts of the U-shaped insulating plate and the anode outer frame are screwed out, and the U-shaped insulating plate can be removed from the anode plate.

[0022] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. A device for preventing short circuit between anode and cathode in silver electrolysis, characterized in that: The device comprises a U-shaped insulating plate (1), wherein the U-shaped insulating plate (1) is in two pieces, wherein one U-shaped insulating plate (1) is clamped at one end of an anode outer frame (2), and the other U-shaped insulating plate (1) is clamped at the other end of the anode outer frame (2), and the U-shaped insulating plate (1) is bolted to the anode outer frame (2).

2. A device for preventing short circuit between anode and cathode of silver electrolysis according to claim 1, characterized in that: The U-shaped insulating board (1) is 25 cm long, and the widths of its three panels are all 4 cm.

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