CN104805472B - One kind is exempted to weld easily-disassembled electrowinning zinc composite anode structure and its manufacture craft - Google Patents

Abstract

The invention discloses a method that can avoid the difficult disassembly and assembly of the conductive rod and the titanium anode sheet caused by the traditional welding method. A composite anode structure and manufacturing process for electro-deposited zinc without welding and easy to disassemble, which produces a large amount of acid mist, deteriorates the working environment of the workshop, and causes huge power loss, including conductive rods, anode plates, and lead or lead alloy sleeves , the lead or lead alloy casing is fixedly connected to the upper end of the anode plate, and the upper end of the anode plate is integrally formed with a connecting joint in the lead or lead alloy casing. The lower tapered trapezoidal platform structure, the conductive rod is trapezoidal on its four sides, and is a trapezoidal platform structure that gradually expands from top to bottom, the conductive rod is in the lead or lead alloy sleeve, and is stacked on the top surface of the connecting joint and the two ends of the conductive rod protrude from the lead or lead alloy sleeve.

Description

A composite anode structure and its manufacturing process for welding-free and easy-to-disassemble electrolytic deposition of zinc

technical field

The invention relates to an anode structure, in particular to an anode structure for electrolytic deposition of zinc.

Background technique

In the process of hydrometallurgy, the electrolytic zinc anode plate is an important production consumable, and more than 60% of the electric energy and electricity consumption of electrolytic zinc is in the electrolytic anode plate process. In order to reduce power consumption and improve product quality, continuous exploration of new anode materials is an important research topic for electrodeposited zinc.

In recent years, with the active exploration of domestic and foreign professionals, the use of titanium as the anode material is a revolution in the electrowinning anode material industry. The titanium anode is made of a titanium plate as the base material, and a layer of active oxide layer is coated on the surface of the titanium anode. The anode structure for hydrometallurgy includes two parts, one part is a conductive rod, usually made of copper or copper alloy; the other part is Titanium anodes, and titanium and lead are different metals and cannot be welded together by direct welding. Therefore, in order to solve this problem, the traditional method is to make the conductive rod into a titanium-copper composite rod, that is, to tightly wrap a layer of titanium on the surface of the copper rod. Because titanium and titanium can be welded, the titanium anode can be directly welded to the titanium Copper composite rod. However, the price of titanium-copper composite rods is several times that of pure copper rods, which will lead to too high electrode cost, which is not conducive to popularization and application; at the same time, there are defects that titanium-copper composite rods and titanium plates are difficult to separate after welding, and they can only be separated when they are separated. In the cutting method, the titanium-copper composite rod or the titanium anode plate will be damaged during the cutting process, so that the titanium anode plate cannot be reused. In view of the problems existing in this welding method, industry personnel adopt another connection method, which is to detachably lock and connect the conductive rod and titanium anode sheet through bolts. Although this bolt connection method is easy to disassemble and assemble, it will not damage the conductive rod and titanium anode. Titanium anode plate overcomes the problem that the welding method is not easy to disassemble, and the conductive rod and anode plate are easily damaged when disassembled; however, this bolt connection method will reduce the contact area between the conductive rod and the titanium anode plate, and contact The problem of large resistance leads to serious heating, which in turn leads to excessive temperature of the electrolyte, generating a large amount of acid mist, and deteriorating the working environment of the workshop; at the same time, the heating of the anode structure will cause huge power loss and increase the production cost of the enterprise.

In view of this, the inventor conducted in-depth research on the above-mentioned defects, which resulted from this case.

Contents of the invention

The purpose of the present invention is to provide a composite anode structure for electrolytic deposition without welding and easy to disassemble, so as to solve the problem in the prior art that the conductive rod and the titanium anode sheet are not easy to disassemble, and the conductive rod and the titanium anode sheet are damaged during disassembly. , or due to the small contact area between the conductive rod and the titanium anode sheet and the large contact resistance, the temperature of the electrolyte is too high to generate a large amount of acid mist, which deteriorates the working environment of the workshop and causes a huge loss of power consumption.

Another object of the present invention is to provide a method that can solve the problems existing in the prior art because the conductive rod and the titanium anode sheet are not easy to disassemble, the conductive rod and the titanium anode sheet are damaged during disassembly, or the contact area between the conductive rod and the titanium anode sheet is damaged. The manufacturing process of the composite anode structure for electrodeposited zinc without welding and easy to disassemble is the problem of small, high contact resistance, resulting in a large amount of acid mist generated by excessive electrolyte temperature, deteriorating the working environment of the workshop, and causing huge power consumption losses.

In order to achieve the above object, the solution of the present invention is:

A composite anode structure for welding-free and easily disassembled electrolytic zinc, comprising a conductive rod and an anode plate, the conductive rod is a copper or copper alloy conductive rod, the anode plate is a titanium anode plate, the anode plate is vertically arranged, and the conductive The rod lies on the top of the anode plate; it also includes a lead or lead alloy sleeve body, the above-mentioned lead or lead alloy sleeve body is fixedly connected with the upper end of the anode plate, and the upper end of the above-mentioned anode plate is integrally formed with a connecting joint, and the above-mentioned connecting joint Located in the above-mentioned lead or lead alloy casing, the above-mentioned connecting joint has a trapezoidal platform structure whose four sides are trapezoidal, and the trapezoidal platform structure of the above-mentioned connecting joint is tapered from top to bottom, and the above-mentioned conductive rod has a trapezoidal platform structure with four sides. trapezoidal platform structure, and the trapezoidal platform structure of the above-mentioned conductive rod is gradually expanded from top to bottom. The ends protrude from the above-mentioned lead or lead alloy casing, and the above-mentioned conductive rod is fixedly connected with the above-mentioned lead or lead alloy casing.

Taking the thickness direction of the anode plate as the front-rear direction, the width direction of the anode plate as the left-right direction, the length direction of the above-mentioned conductive rod is the same as the left-right direction of the above-mentioned anode plate, and the two extensions of the above-mentioned conductive rod are respectively located on the left and right sides of the above-mentioned anode plate In addition, the above-mentioned connecting joint is in a strip-shaped structure extending along the left-right direction of the anode plate, the left and right end surfaces of the above-mentioned connecting joint are flush with the left and right side surfaces of the above-mentioned anode plate, and the front and rear sides of the lower bottom surface of the above-mentioned connecting joint are in the above-mentioned Outside the front and rear sides of the anode plate.

A manufacturing process of a composite anode structure for electro-deposited zinc without welding and easily disassembled, which is realized through the following steps:

Step 1), preparing the anode plate and the conductive rod of claim 1;

Step 2), placing the conductive rod in step 1) on the connecting joint of the anode plate to form a semi-finished product;

Step 3), first set the semi-finished product in step 2) upside down, and place it in the square forming cavity of the casting mold, and form a gap between the conductive rod and the bottom of the square forming cavity and the four side walls of the semi-finished product. There are pouring intervals between the four side walls of the molding chamber, and the non-contact end of the anode plate and the conductive rod protrudes out of the square molding chamber, and then the heated lead or lead alloy molding liquid is poured into the square molding chamber for cooling and forming ;

Step 4), stripping the membrane to obtain the composite anode structure.

After adopting the above-mentioned technical scheme, a kind of composite anode structure for electrodeposited zinc without welding and easy to disassemble according to the present invention has a trapezoidal platform structure that tapers from top to bottom for the connecting joint, and a trapezoidal structure that gradually expands from top to bottom for the conductive rod. Platform structure, so that the four sides where the connecting joint and the conductive rod are superimposed each form a sharp structure. When disassembling, apply inward pressure to the part of the lead or lead alloy sleeve that is located at the four sharp structures. At this time, the four sharp parts It can be equivalent to a knife blade, but the lead or lead alloy casing has low hardness and softness, and is easily cut by four sharp parts, so that the lead or lead alloy casing is cut into two separate pieces, one is connected to the conductive rod, and the other is connected to the anode plate Connection, so that the separation of the conductive rod and the anode plate can be realized. After separation, because the interface bonding force between titanium and copper and lead or lead alloy is not high, the lead or lead remaining on the conductive rod and the connecting joint can be easily removed. The alloy is stripped so that the conductive rods and anode plates can be reused, and the stripped lead or lead alloy can also be reused. Compared with the prior art, the composite anode structure for zinc electrowinning without welding and easily disassembled according to the present invention, the conductive rod and the anode plate are connected by casting lead or lead alloy, which does not require welding and does not reduce the electrical conductivity. The contact area between the rod and the anode plate avoids the difficulty of disassembly and assembly of the conductive rod and the titanium anode sheet caused by the traditional welding method, and the damage of the conductive rod and the anode sheet during disassembly or the contact area between the conductive rod and the anode plate caused by the bolt connection method less, high contact resistance, resulting in a large amount of acid mist generated by the high temperature of the electrolyte, deteriorating the working environment of the workshop, and causing a huge loss of power consumption; at the same time, the low hardness of the lead or lead alloy casing and the conductivity The trapezoidal platform structure of the rod and the connecting joint can quickly disassemble the conductive rod and the connecting joint, and the disassembly and assembly are relatively simple, and the contact interface between the lead or lead alloy sleeve and the connecting joint is in close contact, and the lead or lead alloy sleeve and the connecting joint are in close contact. The contact area of the connection joint is large, so the contact resistance is effectively reduced, and the conductivity of the anode structure is not affected.

Description of drawings

Fig. 1 is the forward structure schematic diagram of the present invention;

Fig. 2 is a longitudinal sectional view of the present invention;

Fig. 3 is the structural representation of conductive bar among the present invention;

Fig. 4 is the partial structure schematic diagram after the present invention pressurizes;

Fig. 5 is a schematic diagram of the pouring steps of the present invention.

detailed description

A composite anode structure for welding-free and easy-to-disassemble electrodeposition zinc of the present invention, as shown in Figure 1-4, includes a conductive rod 1, an anode plate 2 and a lead or lead alloy sleeve 3, and the conductive rod 1 is copper or Copper alloy conductive rod, the anode plate 2 is a titanium anode plate, the anode plate 2 is erected, the width direction of the anode plate 2 is the left and right direction of the anode plate, the thickness direction is the front and rear direction of the anode plate, the anode plate 2 The height is 90cm-120cm, the width is 50cm-90cm, and the thickness is 0.2cm-0.6cm. The lead or lead alloy sleeve 3 is located above the anode plate 2, and the lead or lead alloy sleeve 3 extends along the width direction of the anode plate 2. The strip-shaped square structure, the upper end of the anode plate 2 extends into the lead or lead alloy sleeve body 3, and is fixedly connected with the lead or lead alloy sleeve body 3, the upper end of the anode plate 2 is integrally formed with a The strip-shaped connecting joint 21 extending in the left and right directions and located in the lead or lead alloy casing 3 has a trapezoidal platform structure whose four sides are trapezoidal, and the trapezoidal platform structure of the connecting joint 21 is from top to bottom. Tapered setting, that is, the longitudinal section of the connecting joint 21 is a trapezoid tapering from top to bottom, and the front and rear sides of the connecting joint 21 are outside the front and rear sides of the anode plate 2, preferably the top surface of the anode plate 2 It coincides with the middle part of the lower bottom surface of the connecting joint 21, and the left and right sides of the connecting joint 21 are flush with the left and right sides of the anode plate 2. The conductive rod 1 lies horizontally in the lead or lead alloy casing 3, and It is a strip structure extending along the left and right direction of the anode plate 2. The conductive rod 1 has a trapezoidal platform structure whose four sides are trapezoidal. The trapezoidal platform structure of the conductive rod 1 is gradually expanded from top to bottom, that is, the conductive rod The longitudinal section of 1 is a trapezoid that expands gradually downwards, preferably the length of the conductive rod is 120cm-150cm, the width is 2cm-3cm, the thickness of the conductive rod is 1cm-2cm, and the conductive rod 1 is stacked on the connecting joint 21, and the front and rear side edges of the lower bottom surface of the conductive rod 1 are flush with the front and rear side edges of the top surface of the connecting joint, and the left and right ends of the conductive rod 1 protrude from the lead or lead alloy sleeve body 3 Outside the left and right sides, and the fixed connection between the conductive rod 1 and the lead or lead alloy casing 3, the conductive rod 1 and the anode plate 2 are formed by casting the conductive rod 1 and the positive plate into the lead or lead alloy casing 3. The board 2 is fixedly connected with the lead or lead alloy casing 3 .

A manufacturing process of a composite anode structure for electro-deposited zinc without welding and easily disassembled according to the present invention is realized through the following steps:

Step 1), preparing the conductive rod 1, the anode plate 2 and the connecting joint 21 of the above structure;

Step 2), placing the conductive rod 1 of step 1) on the connection joint 21 of the anode plate 2 to form a semi-finished product;

Step 3), as shown in Figure 5, first set the semi-finished product in step 2) upside down, and place it in the square forming chamber 41 of the casting mold 4, and the conductive rod 1 and the bottom of the square forming chamber 41 There are pouring intervals between the four side walls of the semi-finished product and the four side walls of the square molding chamber, and the non-contact end of the anode plate 2 and the conductive rod 1 stretches out of the square molding chamber, and then the heated lead or The lead alloy forming liquid is poured into the square forming chamber 41 for cooling and forming, that is, the lead or lead alloy forming liquid poured into the square forming chamber 41 can form the lead or lead alloy casing 3;

In step 4), the composite anode structure can be obtained by stripping the film. During stripping, the side wall of the square forming chamber 41 is deformed outward to take out the composite anode structure.

A kind of welding-free and easy-to-disassemble composite anode structure for electrodeposited zinc of the present invention, because the connecting joint 21 is a trapezoidal platform structure that tapers from top to bottom, and the conductive rod 1 is a trapezoidal platform structure that gradually expands from top to bottom, so that The front, rear, left and right four sides of the superimposed place where the connecting joint 21 and the conductive rod 1 are superimposed can all form sharp structures. Apply opposing pressure at the position of the sharp structure. At this time, the sharp structure on the front and rear sides can be equivalent to the blade, and the lead or lead alloy sleeve body 3 has low hardness and is soft, so the lead or lead alloy sleeve body 3 is applied to the opposing pressure. Two sharp structures can cut it during pressure, so that the front and rear sides of the lead or lead alloy casing have a cutting fracture, and then the left and right sides of the lead or lead alloy casing 3 are located at the position of the sharp structure. Carry out applying facing pressure, now be in the sharp structure of left and right sides and be equivalent to blade correspondingly, all have a cutting fracture to the left and right sides of lead or lead alloy cover body 3, utilize lead or lead alloy cover body 3 like this The four cutting fractures on the front, rear, left and right sides make the lead or lead alloy casing 3 be cut into two separate pieces, one is connected to the conductive rod 1, and the other is connected to the anode plate 2, so that the conductive rod can be realized. 1. Separation from the anode plate 2, the lead or lead alloy on the separated conductive rod 1 and the anode plate 2 can be removed by stripping or heating and melting.

The composite anode structure and manufacturing process for welding-free and easy-to-disassemble electrolytic zinc deposition of the present invention have the following effects:

1. The conductive rod 1 and the anode plate 2 are connected by lead or lead alloy casting, without welding, which avoids the difficulty of disassembling the conductive rod and the titanium anode sheet caused by the traditional welding method, and causes the conductive rod to be damaged during disassembly. And the problem of damage to the anode sheet, at the same time, it will not reduce the contact area between the conductive rod 1 and the anode plate 2, avoiding the small contact area between the conductive rod and the anode plate caused by the traditional bolt connection method, and the contact resistance is large, resulting in excessive electrolyte temperature. A large amount of acid mist is generated, which deteriorates the working environment of the workshop and causes huge power loss;

2. When disassembling, the characteristics of low hardness of the lead or lead alloy sleeve 3 and the trapezoidal platform structure of the conductive rod 1 and the connecting joint 21 can be used to quickly disassemble the conductive rod 1 and the connecting joint 21, and the disassembly and assembly are relatively simple;

Three, adopt the form of pouring to form described lead or lead alloy cover body on connection joint 21 and conductive rod 1, make the connection of lead or lead alloy cover body and connection joint 21 and conductive rod 1 be seamless connection, can prevent Electrolyte and air permeate between the lead or lead alloy casing and the connection joint 21, so that the non-conductive titanium dioxide passivation layer will not be formed on the surface of the connection joint 21, ensuring the conductivity of the composite anode structure;

4. The contact interface between the lead or lead alloy sleeve body and the connection joint 21 is in close contact, and the contact area between the lead or lead alloy sleeve body 3 and the connection joint 21 is large, so the contact resistance can be effectively reduced, thereby making the anode structure more stable. The conductivity is not affected; at the same time, because the binding force between lead or lead alloy and copper and titanium is not high, the lead or lead alloy remaining on the conductive rod 1 and the anode plate 2 after separation can be easily and quickly removed. It is simple, and the removed lead or lead alloy can also be reused, so that the overall manufacturing cost of the composite anode structure is low.

The composite anode structure of the present invention is also applicable to the electrowinning of other metals.

The above-mentioned embodiments and accompanying drawings do not limit the form and style of the product of the present invention, and any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims (3)

1. one kind exempts to weld easily-disassembled electrowinning zinc composite anode structure, including contact rod and positive plate, the contact rod be copper or Copper alloy contact rod, the positive plate is titanium anode plate, and the positive plate is in setting is erect, and the contact rod accumbency is in the upper of positive plate Side；It is characterized in that：Also include lead or metal body, the upper end of above-mentioned lead or metal body and positive plate, which is fixed, to be connected Connect, the upper end end of above-mentioned positive plate is integrally formed with jointing, and above-mentioned jointing is in above-mentioned lead or metal body Interior, above-mentioned jointing is trapezoidal bucking ladder structure in its four side, and the bucking ladder structure of above-mentioned jointing is in by upper And under it is tapered set, above-mentioned contact rod is trapezoidal bucking ladder structure, and the bucking ladder structure of above-mentioned contact rod in its four side Set in from top to bottom flaring, above-mentioned contact rod is in above-mentioned lead or metal set is internal, and the folded top surface for being located at jointing On, and above-mentioned lead or metal set are stretched out in vitro in the two ends end of above-mentioned contact rod, above-mentioned contact rod and above-mentioned lead or metal Body is fixedly connected；Using the thickness direction of positive plate as fore-and-aft direction, the width of positive plate is left and right directions, above-mentioned lead or Metal body is in the strip square structure extended along the width of positive plate.

2. one kind as claimed in claim 1 is exempted to weld easily-disassembled electrowinning zinc composite anode structure, it is characterised in that：It is above-mentioned to lead The length direction of torch is identical with the left and right directions of above-mentioned positive plate, and two extensions of above-mentioned contact rod are respectively at above-mentioned anode Outside the left and right sides of plate, above-mentioned jointing is in the strip structure extended along the left and right directions of positive plate, above-mentioned jointing The left and right sides of left and right ends end face and above-mentioned positive plate are flush, and the front and rear sides side of above-mentioned jointing bottom surface is in Outside the front and rear sides of above-mentioned positive plate.

3. a kind of manufacture craft for exempting to weld easily-disassembled electrowinning zinc composite anode structure, it is characterised in that as follows Realize：

Step 1), prepare claim 1 positive plate and contact rod；

Step 2), by step 1) contact rod lie on the jointing of positive plate, form semi-finished product；

Step 3), first by step 2) semi-finished product stand upside down and set, and be positioned in the square forming cavity room for pouring mould, and conductive Rod and the party are respectively provided between forming the bottom of chamber of die cavity room between four side walls of semi-finished product and four side walls of square shaping chamber Interval is poured, positive plate is stretched out outside square forming cavity room with the non-contacting one end of contact rod, then by the lead or metal of heating Shaping dope is poured into square forming cavity room and is cooled and shaped；

Step 4), demoulding, you can obtain described composite anode structure.