WO2016086701A1

WO2016086701A1 - Induced device and process for inhibiting electrodeposition of acid mist

Info

Publication number: WO2016086701A1
Application number: PCT/CN2015/089547
Authority: WO
Inventors: 林建平; 石文堂; 沈向峰; 罗成
Original assignee: 杭州三耐环保科技股份有限公司
Priority date: 2014-12-04
Filing date: 2015-09-14
Publication date: 2016-06-09
Also published as: EP3222755A4; AP2016009246A0; PE20170821A1; CL2016001988A1; EP3222755A1; US20160326662A1

Abstract

Provided is an induced device for inhibiting the electrodeposition of acid mist, wherein the device comprises a polar plate (1); a first isolation net (3) and a second isolation net (4) are respectively provided on both side faces of the polar plate (1), and gaps are respectively provided between the first isolation net (3), the second isolation net (4) and the two side faces of the polar plate; and a first isolation belt (5) and a second isolation belt (6) are respectively provided on both sides of the top of the polar plate (1), and the first isolation belt (5) and the second isolation belt (6) are respectively located at a position above the the first isolation net (3) and the second isolation net (4). In addition, an induced process for inhibiting the electrodeposition of acid mist using the above-mentioned induced device for inhibiting the electrodeposition of acid mist is provided. The induced device and process for inhibiting the electrodeposition of acid mist can avoid the formation of acid mist in the process of electrodeposition from the source so as to eliminate acid mist pollutions, and can further achieve clean productions.

Description

Inductive suppression electric product acid mist device and process

Technical field

The invention relates to the fields of hydrometallurgy, electroplating, chemical engineering, and the like, and particularly relates to an inducing type suppressing electro-acid mist device and a process.

Background technique

At present, in the actual production of hydrometallurgy, electroplating, chemical industry, etc., the electrochemical reaction of the anode and the cathode generates a large amount of gas. When these gases are precipitated on the electrode plate, they are attached to the surface of the electrode at an early stage, and as the bubble grows, when the bubble buoyancy When the adhesion is greater than the adhesion, the bubble is detached from the electrode plate and floats up from the solution. When the bubble reaches the liquid surface, due to the surface liquid tension, the bubble overflows from the solution and must carry the liquid. These liquid-carrying bubbles encounter the groove surface. After the cold air, a burst occurs and a liquid mist is formed. Since the composition of the solution is acidic, a large amount of acid mist is formed on the groove surface. These acid mists not only seriously endanger the health of the workers, pollute the environment and the surrounding environment, but also cause serious corrosion to the plant and equipment, and increase the consumption of certain reagents.

In order to solve the problem of low-altitude pollution of acid mist, most manufacturers currently use mechanical exhaust ventilation, that is, after the formation of acid mist, the wind is blown to the plant through a large-volume fan to greatly increase the ventilation in the plant to reduce the acid mist. For the purpose of concentration, or by adding a gas collecting hood to the solution storage tank, the acid mist of the groove surface is collected, and then pumped to the absorption tower through the fan to absorb the alkali liquid to reduce the acid mist pollution. The above methods are all after-treatment processes, which are not only complicated in operation, high in processing cost, but also ineffective in processing. In addition, some manufacturers use the groove surface covering method to treat acid mist. One is to cover the surface of the solution with plastic or foam pellets in the tank, increasing the resistance when the bubbles overflow, causing the bubbles to rupture on the surface of the small sphere, and the acid droplets are attached to The surface of the ball avoids the overflow of the acid-containing droplets, effectively reducing the formation of acid mist; the other is to add a surfactant to the liquid in the tank and form a foam coating on the surface of the liquid, which can cover the foam layer Effectively prevents the dispersion of acid mist droplets when bubbles overflow. However, this method still has problems in that the plastic pellet easily adheres to the electrode plate and blocks the pipe, and the effect of preventing and controlling the acid mist is not ideal, and the operation is troublesome and the cost is high. At present, many manufacturers adopt acid mist inhibitors in the solution to control acid mist pollution. This method mainly reduces the viscosity of the solution by adding an acid mist inhibitor, so that the bubbles can quickly overflow and reduce the carrying amount of the droplets. Thereby achieving the purpose of reducing acid mist pollution. This method mainly has problems such as high production cost and unstable acid mist suppression rate due to failure of the inhibitor. At the same time, some additives will affect the quality of the product.

In order to solve the problem of acid mist pollution from the root cause, the patent application No. 200710009588.7 proposes a method of wrapping the anode with a plastic mesh and a barrier cloth, so that the gas rising path generated by the anode increases, and the bubble becomes large. Thereby reducing the number of bubbles bursting on the surface of the liquid to achieve the purpose of suppressing the acid mist. Although the method can suppress the generation of acid mist, the barrier cloth is used to wrap the anode as a whole, which is disadvantageous to the flow of the electrolyte, causing the cell voltage to rise, thereby increasing energy consumption. At the same time, the barrier cloth encapsulates the anode conductive beam as a whole, and a large amount of gas is enriched around the anode conductive beam, which accelerates the corrosion rate of the anode conductive beam and seriously affects the anode life. Therefore, it is necessary to develop a process capable of avoiding the formation of acid mist from the root source to eliminate acid mist pollution while avoiding an increase in the cell voltage.

Summary of the invention

The technical problem to be solved by the present invention is to provide the above-mentioned defects that are highly susceptible to acid mist pollution in the electrochemical reaction process in the fields of hydrometallurgy, electroplating, chemical engineering, etc. in the prior art, and to provide a method capable of avoiding electrowinning from the root cause. An inducible electrodeposited acid mist suppressing device that forms acid mist during the process, eliminates acid mist pollution, and can also achieve clean production.

The technical solution adopted by the present invention to solve the technical problems thereof is as follows:

An inductively suppressing electro-acid mist device, comprising a plate;

a first isolation net and a second isolation net are respectively disposed on the two sides of the plate, and a gap is left between the first isolation net and the second isolation net and the two sides of the plate respectively; and the first isolation is respectively disposed on both sides of the top of the plate And a second isolation strip, and the first isolation strip and the second isolation strip are respectively located above the first isolation net and the second isolation net.

During the electrowinning of the electrochemical reaction, the plates generate a large amount of gas. When these gases are deposited on the plates, they are initially attached to the surface of the electrode. As the bubbles grow, when the buoyancy of the bubbles is greater than the adhesion, the bubbles are from the plates. Disengaged from above and floated from the effusion; because the left and right sides of the plate are respectively provided with a first isolation net and a second isolation net, and the first isolation net and the second isolation net respectively have a gap between the two sides of the plate Such a design allows the electric fluid to enter from the bottom of the first and second isolation nets, and the air bubbles are carried between the first and second isolation nets. The electric effluent flows from the bottom to the top. During this process, the effluent gradually flows out, and because of the arrangement of the first isolation net and the second isolation net, on the one hand, the resistance of the bubble rise increases, and the bubble is extended. The residence time in the effusion, most of the bubbles burst in the effusion or with the circulation of the effusion, can significantly reduce the number of bubbles in the surface of the bubble burst; on the other hand, the tiny bubbles in the effusion continue to aggregate The bubbles are formed, and because the arrangement of the first and second spacers prolongs the time of bubble accumulation, the number of bubble bursts floating up to the liquid surface can be significantly reduced, thereby suppressing or reducing the occurrence of acid mist. In addition, the first isolation net and the second isolation net respectively have a gap between the two sides of the plate to facilitate the circulation of the solution, and it is convenient to induce the gas to rise; and the bubble accelerates the electrochemistry under the driving of the rising power. The migration rate of the solution ions in the reaction tank is favorable for the decrease of the concentration difference polarization and the decrease of the cell voltage.

a first isolation strip and a second isolation strip are respectively disposed on the left and right sides of the top plate, and the first isolation strip and the second isolation strip are respectively located above the first isolation net and the second isolation net, and the design is further The gas in the bubble can be induced to be discharged from the first separator and the second separator, not only can reduce the overflow of the acid droplet, but also a small amount of acid droplets overflowing from the solution pass through the first separator and the first The filtration of the two isolation strips, the acid-containing droplets are basically blocked on the first isolation strip and the second isolation strip, thereby avoiding the formation of acid mist in the trough surface during the electrowinning process, thereby eliminating acid mist pollution and helping To achieve clean production. In addition, the first isolation strip and the second isolation strip can eliminate the bag-up phenomenon caused by the provision of the first isolation net and the second isolation net while inducing gas discharge, thereby avoiding between the plates The adhesion can also prevent the gas from bursting at the gas-liquid interface, effectively reducing the interface corrosion of the plates.

As an improvement of the technical solution of the present invention, the acid mist frame plate set includes an outer frame, an inner frame and a diaphragm cloth, and the diaphragm cloth is embedded in the outer frame through the inner frame, and the pole The plate is inserted into the inner frame together with the first isolation net, the second isolation net, the first isolation strip and the second isolation strip, and the first isolation strip and the second isolation strip are both connected to the diaphragm cloth.

The diaphragm cloth is embedded in the outer frame through the inner frame, and the design can avoid the expansion of the diaphragm cloth due to the gas generated on the electrode plate; in addition, the above-mentioned plate together with the first isolation net, the second isolation net, and the first isolation belt And the second isolation strip is inserted into the inner frame together, such a design makes an effective space between the electrode plate and the acid mist frame plate group, which is beneficial to the flow of the electric liquid and the gas generated on the electrode plate, thereby avoiding The groove surface forms an acid mist.

The first isolation belt and the second isolation belt are connected to the diaphragm cloth, which can effectively prevent acid mist from overflowing.

As an improvement to the technical solution of the present invention, the first insulation mesh and the electrode plates are connected by a first insulating connection. The first insulating net and the electrode plate are connected together by using the first insulating connecting member. On the one hand, the electrode plate can be prevented from emerging from the top of the first separating net due to the buoyancy rising; on the other hand, the gas at the gas-liquid interface can be avoided. The bursting can effectively reduce the interface corrosion of the plates, and also avoid the corrosion of the poles of the plates, which helps to extend the service life of the plates.

As an improvement to the technical solution of the present invention, the second insulation mesh and the electrode plates are connected by a second insulating connection. As described above, the second insulating net and the electrode plate are connected by the second insulating connecting member, and on the one hand, the gas can be prevented from emerging from the side of the second insulating net due to the buoyancy rising; on the other hand, the gas can be avoided. Explosion at the gas-liquid interface can effectively reduce the interface corrosion of the plates, and also avoid corrosion of the conductive rods of the plates, which helps to extend the service life of the plates.

As an improvement to the technical solution of the present invention, the first isolation strip and the second isolation strip are respectively connected to the two sides of the top of the plate through the fixing component. The arrangement of the fixing components facilitates the installation of the first and second spacers and the plates.

As an improvement to the technical solution of the present invention, the fixing component comprises a buckle, a first insulating sleeve and a second insulating sleeve, and the first insulating sleeve and the second insulating sleeve are respectively disposed on both sides of the buckle ;

The first spacer is clamped between the first insulating sleeve and the side of the plate, and the second spacer is clamped between the second insulating sleeve and the side of the plate.

In the fixing assembly of the above structure, the buckle is mainly used for fixing the first insulating sleeve and the second insulating sleeve, and the first insulating sleeve and the second insulating sleeve are respectively used for clamping the first isolation belt and the second Isolation belt.

As an improvement to the technical solution of the present invention, the first insulating sleeve and/or the second insulating sleeve are sleeved with a sleeve fixing sleeve. The setting of the sleeve fixing sleeve not only protects the first insulating sleeve rod and/or the second insulating sleeve rod, but also helps to increase the friction between the first insulating sleeve rod and the first insulating sleeve or The friction between the second insulating sleeve and the second insulating strip can further enhance the clamping strength between the first insulating sleeve or the second insulating sleeve and the first or second insulating strip, respectively.

As an improvement to the technical solution of the present invention, both ends of the top of the outer frame are connected to the conductive bars at the top of the pole plate by hanging buckles. The setting of the shackle can play the role of fixing the diaphragm cloth on the one hand, so as to keep a certain distance from the electrode plate, thereby avoiding the sticking between the diaphragm cloth and the electrode plate, and on the other hand, making the acid mist frame plate group easy installation.

As an improvement to the technical solution of the present invention, the buckle comprises a hanging piece having a triangular cross section and a first fastening plate and a second fastening plate disposed on two sides of the bottom end of the hanging piece, the inner side of the first fastening plate and the second fastening plate Each of the fasteners is provided with a fastener; the fastener is matched with the fastener mounting hole at the top of the outer frame, and the conductive rod of the electrode plate is disposed in the hollow inner cavity of the hanger. The buckle of such a structure not only has a simple structure, but also facilitates the assembly between the outer frame and the conductive rod, and also functions as a fixed diaphragm cloth, so that the diaphragm cloth and the electrode plate are kept at a certain distance, which is beneficial to improving product quality. In addition, the pendant 2.1 has a triangular cross section, and such a design not only utilizes the plate mounting groove, but also functions to prevent the cathode and cathode from being short-circuited.

In the inductively suppressed electrodeposited acid mist device of the invention, the electrode plate is an anode plate.

The present invention also provides an inductively inhibiting electro-accumulation acid mist process using the above-described inductive suppression electro-coal acid mist device, comprising the following steps:

Providing a first isolation net and a second isolation net respectively on the left and right sides of the anode plate, and leaving a gap between the first isolation net and the second isolation net and the two sides of the anode plate;

Connecting the first isolation mesh and the side of the anode plate through the first insulating connector, and connecting the second isolation mesh and the side of the anode plate through the second insulating connector;

A first isolation strip and a second isolation strip are respectively disposed on two sides of the top of the anode plate, such that the first isolation strip and the second isolation strip are respectively located above the first isolation net and the second isolation net, thereby forming the induced suppression Electrolytic acid mist device;

The obtained inductively inhibiting the electro-coal acid mist device is disposed in the electric storage tank at intervals from the cathode plate, and the spacing between the adjacent inductively inhibiting the electro-accumulation acid mist device is 50-150 mm;

After the inductive suppressing electro-coal acid mist device and the cathode plate are disposed in the electrode collecting tank, a large number of bubbles are generated on the anode plate, and the bubbles flow from bottom to top between the first separating net and the second separating net. When the bubble rises to the liquid level of the effusion, the acid mist in the bubble is blocked by the first isolation strip and the second isolation strip, and the gas in the bubble overflows through the first isolation strip and the second isolation strip .

The inductive suppression of the electrodeposited acid mist process of the present invention is not only simple in process, but also uses the above-mentioned inductive suppression of the electrode acid mist device, so that the process can avoid electricity from the root cause. The acid mist shape is formed during the accumulation process, which eliminates acid mist pollution.

In the inductively suppressed electrodeposited acid mist device of the present invention, the spacing between adjacent inductively suppressed electro-coal acid mist devices is 50-150 mm, if the spacing between adjacent inductively suppressed electro-coal acid mist devices is less than 50mm will affect each other's electrical reaction. If the spacing exceeds 150mm, the length or width of the slot surface will be greatly reduced, which will greatly reduce the number of induced suppression acid mist devices that can be installed in the electrode. Seriously affected the electrical efficiency.

As an improvement to the above-described inductive suppression electrowinning acid mist process, a first isolation strip and a second isolation strip are respectively disposed on both sides of the top of the anode plate in the step, so that the first isolation strip and the second isolation strip are respectively located at the first After the isolation net and the upper position of the second isolation net, the steps are further included:

Select the diaphragm cloth, inner frame and outer frame that meet the requirements, and insert the selected diaphragm cloth into the outer frame through the inner frame;

Inserting the anode plate together with the first isolation net, the second isolation net, the first isolation strip and the second isolation strip into the inner frame, and connecting the first isolation strip and the second isolation strip to the diaphragm cloth .

Wherein, the gap between the first isolation net and the side of the anode plate is 2-50 mm, and the gap between the second isolation net and the anode plate side is also 2-50 mm. Because if the gap between the first isolation net and the second isolation net and the two sides of the anode plate respectively is less than 2 mm, the circulating flow of the electric effluent is hindered, which is more unfavorable for inducing gas rise; if the first isolation net and the second isolation The gap between the net and the two sides of the anode plate is greater than 50 mm, which not only makes the volume of the induced suppressing electro-acid mist device increase unnecessarily, is inconvenient to operate, but also makes the first isolation net and the second isolation net fail. The role of isolation.

In addition, in the technical solutions of the present invention, the technical solutions can be implemented by using conventional means in the art, unless otherwise specified.

Therefore, the inductively suppressed electrodeposited acid mist device and the process provided by the present invention can avoid acid mist formation during the electrowinning process from the root, thereby eliminating acid mist pollution and achieving clean production.

DRAWINGS

1 is a schematic view showing the structure of an inductively suppressing electro-coal acid mist device of the present invention;

2 is a schematic structural view of a plate;

Figure 3 is a side view of Figure 2;

Figure 4 is a partial enlarged view of A in Figure 3;

Figure 5 is a schematic structural view of a diaphragm cloth;

Figure 6 is a schematic structural view of the outer frame;

Figure 7 is a schematic structural view of an inner frame;

Fig. 8 is a schematic structural view of a buckle.

The reference numerals in the drawings are as follows: 1 is a pole plate, 1.1 is a conductive rod, 2 is a buckle, 2.1 is a pendant, 2.2 is a first buckle, 2.3 is a second buckle, 2.4 is a fastener, 3 is The first isolation net, 4 is the second isolation net, 5 is the first isolation belt, 6 is the second isolation belt, 7 is the outer frame, 7.1 is the fastener mounting hole, 8 is the inner frame, 9 is the diaphragm cloth, 10 is The first insulating connecting member, 11 is a second insulating connecting member, 12 is a buckle, 13 is a first insulating sleeve rod, 14 is a second insulating sleeve rod, and 15 is a sleeve rod fixing sleeve.

detailed description

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Embodiment 1:

An inductively inhibiting electro-acid mist device, as shown in Figure 1, includes a plate.

As shown in FIG. 2 and FIG. 3, the left and right sides of the top surface of the above-mentioned plate 1 are respectively provided with a first isolation net 3 and a second isolation net 4, wherein the first isolation net 3 and the left side of the plate 1 pass the first The insulating connecting members 10 are connected, and the second isolating mesh 4 and the right side of the plate 1 are connected by the second insulating connecting member 11, and the first isolating net 3 and the second isolating net 4 are respectively left between the left and right sides of the plate 1 gap.

As shown in FIG. 2 and FIG. 3, the top and bottom sides of the top plate 1 are respectively provided with a first isolation strip 5 and a second isolation strip 6 through a fixing component, and the first isolation strip 5 and the second isolation strip 6 respectively Located above the first isolation net 3 and the second isolation net 4; wherein, as shown in FIG. 4, the fixing component comprises a buckle 12, a first insulating sleeve 13 and a second insulating sleeve 14, the first The insulating sleeve 13 and the second insulating sleeve 14 are respectively disposed on the left and right sides of the buckle 12, and the first insulating sleeve 13 and the second insulating sleeve 14 are sleeved with a sleeve fixing sleeve 15; The first spacer 5 is clamped to the left side of the first insulating sleeve 13 and the plate 1 Between the second insulating strip 6 is clamped between the second insulating sleeve 14 and the right side of the plate 1.

Meanwhile, the present invention may further include an acid mist frame plate group, wherein the acid mist frame plate group includes the outer frame 7, the inner frame 8 and the diaphragm cloth 9, and the structures of the outer frame 7, the inner frame 8 and the diaphragm cloth 9 are respectively as shown in the figure 6, shown in Figure 7 and Figure 5; as shown in Figure 1, the diaphragm cloth 9 is embedded in the outer frame 7 through the inner frame 8, and the plate 1 together with the first isolation net 3, the second isolation net 4, the first An isolation strip 5 and a second isolation strip 6 are inserted into the inner frame 8, and the first isolation strip 5 and the second isolation strip 6 are connected to the diaphragm cloth 9; The buckle 2 is connected to the conductive bar 1.1 at the top of the plate 1.

The above plates 1 are all anode plates.

The gap between the first isolation net 3 and the left side of the plate 1 is 2-50 mm, specifically 2, 5, 8, 10, 12, 14, 19, 27, 36, 40, 43, 47 or 50mm, can also be other values; the gap between the second isolation net 4 and the right side of the plate 1 is also 2-50mm, specifically 2, 4, 7, 9, 10, 13, 17, 19 20, 24, 27, 30, 36, 41, 47 or 50 mm may also be other values.

The outer frame 7 is provided with a grid, and the size of the grid is greater than 2*2 mm, or the diameter of the grid is greater than 2 mm, and the outer frame 7 and the inner frame 8 are made of non-metallic plastic, glass steel, etc. Cloth 9 is made of chemical fiber cloth, including polyester, acrylic, nylon and the like.

The first insulating sleeve 13 and the second insulating sleeve 14 are circular or square elongated rods, which are made of non-metal materials and have certain rigidity, and can further strengthen the first insulating sleeve 13 or the second insulating sleeve. The clamping strength between 14 and the first spacer 5 or the second spacer 6 respectively.

The first isolation strip 5 and the second isolation strip 6 are respectively installed at the gas-liquid boundary line at the top of the electrode plate 1, that is, a part of the first isolation strip 5 and the second separation strip 6 are located below the liquid surface, and a part is located on the liquid surface. The gas-liquid boundary line is 5-50 mm above the liquid surface, specifically 5, 7, 10, 14, 17, 19, 23, 26, 30, 35, 39, 43, 47 or 50 mm, and the plate 1 is extended. The length below the liquid surface is 5-50mm, specifically 5, 8, 11, 15, 18, 21, 25, 27, 29, 34, 37, 44, 47 or 50mm. This design can avoid air bubbles in the gas and liquid. The interface is broken, which effectively reduces the interface corrosion of the anode plate. In this embodiment, the distance between the anode plate and the cathode plate is 10 to 100 mm, and specifically 10, 15, 20, 26, 31, 40, 56, 68, 72, 79, 85, 90 or 100 mm.

In the present embodiment, the first spacer tape 5 and the second spacer tape 6 are made of PP cotton.

Embodiment 2:

This embodiment is basically the same as the first embodiment. The only difference is that the hang buckle is limited in this embodiment.

As shown in FIG. 8 , the shackle 2 includes a hanging member 2.1 having a triangular cross section and a first gusset 2.2 and a second gusset 2.3 disposed on the left and right sides of the bottom end of the hanging member 2.1, and the first gusset 2.2 and The fastening member 2.4 is disposed on the inner side of the second fastening plate 2.3; the fastening member 2.4 cooperates with the fastener mounting hole 7.1 at the top of the outer frame 7, and the conductive bar 1.1 of the electrode plate 1 is disposed in the hollow inner cavity of the hanging member 2.1. The shackle 2 of such a structure not only has a simple structure, but also facilitates the assembly between the outer frame 7 and the conductive bar 1.1, and also functions to fix the diaphragm cloth 9, so that the diaphragm cloth 9 and the electrode plate 1 are kept at a certain distance, which is advantageous. Improve product quality.

In addition, the above-mentioned hanging piece 2.1 has a triangular cross section, and such a design not only utilizes the plate mounting groove, but also functions to prevent the cathode and cathode from being short-circuited.

Embodiment 3:

This embodiment is basically the same as the first embodiment, and the difference between the two is:

The upper part of the above-mentioned plate 1 is provided with a spirally inclined falling barrier plate, so that the acid mist generated during the electrowinning process is condensed and returned to the electrochemical reaction tank through the inclined falling barrier plate, which helps to further avoid formation of acid mist on the groove surface. .

Embodiment 4:

The first isolation strip 5 and the second isolation strip 6 are provided with at least one filter inside to filter out the acid mist entrained in the gas.

Embodiment 5:

The present embodiment provides an inductive suppression electro-accumulation acid mist process using the above-described inductive suppression electro-magic acid mist device, comprising the following steps:

Step (1): respectively setting the first isolation net and the second on the left and right sides of the anode plate Isolating the net, and leaving a gap between the first and second isolated nets and the left and right sides of the anode plate;

Step (2): the first isolation net and the anode plate are fixedly connected to each other through the first insulating connecting member, and the second insulating net and the anode plate are fixedly connected to each other through the second insulating connecting member;

Step (3): disposing the first isolation strip and the second isolation strip on the left and right sides of the top of the anode plate, respectively, such that the first isolation strip and the second isolation strip are respectively located above the first isolation net and the second isolation net position;

Step (4): selecting the diaphragm cloth, the inner frame and the outer frame that meet the requirements, and inserting the selected diaphragm cloth into the outer frame through the inner frame; wherein the diaphragm cloth has a warp and weft density of (50-600)* ( 50-600), which helps to optimize the effect of the isolation bubble of the diaphragm cloth; the length of the diaphragm cloth is 2-5 mm larger than the length of the inner frame, specifically 2, 3, 4 or 5 mm, and the width is larger than the width of the inner frame 2 -5mm, specifically 2, 3, 4, 4.5 or 5mm; the length of the inner frame is 3-10mm smaller than the length of the outer frame, specifically 3, 3.5, 4.2, 5, 5.3, 6.4, 7, 8.5 or 10mm, and its width is 3-10mm smaller than the width of the outer frame, specifically 3, 3.7, 4.6, 5.6, 6.6, 7.8, 9 or 10mm, which are convenient for installation between the diaphragm cloth, the inner frame and the outer frame;

Step (5): inserting the anode plate together with the first isolation net, the second isolation net, the first isolation belt and the second isolation belt into the inner frame, and the first isolation belt and the second isolation belt and the diaphragm The cloths are joined together to form the above-mentioned inductively suppressed electrowinning acid mist device;

Step (6): arranging the inductively suppressed electrodeposited acid mist device obtained in the step (5) at equal intervals with the cathode plate in the electric cell, and the interval between adjacent inductively suppressing the electrodeposited acid mist devices is 50 -150mm;

Step (7): after the above-mentioned inductive suppression electro-coal acid mist device and the cathode plate are disposed in the electric storage tank, a large amount of air bubbles are generated on the anode plate, and the air bubbles are separated from the first isolation net and the second isolation net And flowing upward; when the bubble rises to the liquid level of the electrowinning liquid, the acid mist in the bubble is blocked by the first isolation band and the second isolation band, and the gas in the bubble passes through the first isolation band and the second isolation band overflow.

The flow rate of the electrolyzed liquid in the electric storage tank is 10-1000 L/min, specifically 10, 30, 100, 200, 370, 480, 520, 600, 735, 846 or 1000 L/min; the temperature is 20-75 ° C Specifically, 20, 28, 37, 44, 50, 63, 70 or 75 ° C can be selected.

In the present embodiment, the electrolyzed liquid is a component of an electrowinning copper solution, and the composition of the electrowinning copper solution is: H2SO4 100-180 g/L, Cu2+30-50 g/L.

Example 6:

This embodiment is basically the same as the fifth embodiment, and the only difference is:

The electrolyzed liquid in this embodiment is an electrolytic zinc solution, and the composition of the electrolytic zinc solution is H2SO4 100-200 g/L, Zn2+ 30-50 g/L.

Example 7:

The electrolyzed liquid in this embodiment is an electrolytic nickel solution, and the composition of the electrolytic nickel solution includes: H2SO4 10-60 g/L, and Ni2+40-80 g/L.

Example 8:

The electrolyzed liquid in this embodiment is an electrolytic manganese solution, and the composition of the electrolytic manganese solution includes: H2SO4 10-50 g/L, Mn2+ 15-30 g/L, and (NH4)2SO4 120-180 g/L.

It is to be understood that those skilled in the art will be able to make modifications and changes in accordance with the above description, and all such modifications and variations are intended to be included within the scope of the appended claims.

Claims

An inductively suppressing electro-acid mist device, characterized in that it comprises a plate (1);

a first isolation net (3) and a second isolation net (4) are respectively disposed on both sides of the plate (1), and the first isolation net (3) and the second isolation net (4) respectively a gap is left between the two sides of the plate (1); a first isolation strip (5) and a second isolation strip (6) are respectively disposed on two sides of the top of the plate (1), and the first isolation strip ( 5) and the second isolation strip (6) are located above the first isolation net (3) and the second isolation net (4), respectively.
The apparatus for inducing an electrolytic acid mist according to claim 1, further comprising an acid mist frame plate set comprising an outer frame (7), an inner frame (8) and a diaphragm cloth (9) The diaphragm cloth (9) is embedded in the outer frame (7) through an inner frame (8), together with the first isolation net (3) and the second isolation net ( 4) The first isolation strip (5) and the second isolation strip (6) are inserted together in the inner frame (8), and the first isolation strip (5) and the second isolation strip (6) are both Connected to the diaphragm cloth (9).
The inductively suppressed electrodeposited acid mist device according to claim 1, wherein the first isolation net (3) and the electrode plate (1) are connected by a first insulating connecting member (10), the second The insulation mesh (4) and the electrode plate (1) are connected by a second insulating connection (11).
The inductively suppressing electro-acid mist device according to claim 1, wherein the first isolation strip (5) and the second isolation strip (6) are respectively coupled to the plate (1) by a fixing assembly The tops of the top are connected.
The inductively suppressed electrodeposited acid mist device according to claim 4, wherein the fixing assembly comprises a buckle (12), a first insulating sleeve (13) and a second insulating sleeve (14). The first insulating sleeve (13) and the second insulating sleeve (14) are respectively disposed on two sides of the buckle (12);

The first isolation strip (5) is clamped between the first insulating sleeve (13) and the side of the plate (1), and the second isolation strip (6) is clamped at the second insulation Between the sleeve (14) and the side of the plate (1).
The inductively suppressing electrodeposited acid mist device according to claim 5, wherein the first insulating sleeve (13) and/or the second insulating sleeve (14) are sleeved with a sleeve fixing sleeve ( 15).
The inductively suppressing electro-acid mist device according to claim 2, wherein both ends of the outer frame (7) pass through the buckle (2) and the conductive rod on the top of the plate (1) ( 1.1) Connected.
The inductively suppressed electrodeposited acid mist device according to claim 7, wherein the hanging buckle (2) comprises a hanging piece (2.1) having a triangular cross section and is disposed at both sides of the bottom end of the hanging piece (2.1) The first gusset plate (2.2) and the second gusset plate (2.3) are provided with fasteners (2.4) on the inner side of the first gusset plate (2.2) and the second gusset plate (2.3); the fasteners (2.4) ) mating with a fastener mounting hole (7.1) at the top of the outer frame (7), the conductive rod (1.1) of the electrode plate (1) is bored in the hollow interior of the pendant (2.1).
An inductively inhibiting electro-accumulation acid mist process using the inductive suppression electro-coal acid mist device according to any one of claims 1-8, comprising the steps of:

Providing a first isolation net and a second isolation net respectively on both sides of the anode plate, and leaving a gap between the first isolation net and the second isolation net and the two sides of the anode plate;

Connecting the first isolation mesh and the side of the anode plate through the first insulating connector, and connecting the second isolation mesh and the side of the anode plate through the second insulating connector;

A first isolation strip and a second isolation strip are respectively disposed on two sides of the top of the anode plate, such that the first isolation strip and the second isolation strip are respectively located above the first isolation net and the second isolation net, thereby forming the induced suppression Electrolytic acid mist device;

The obtained inductively inhibiting the electro-coal acid mist device is disposed in the electric storage tank at intervals from the cathode plate, and the spacing between the adjacent inductively inhibiting the electro-accumulation acid mist device is 50-150 mm;

After the inductive suppressing electro-coal acid mist device and the cathode plate are disposed in the electrode collecting tank, a large number of bubbles are generated on the anode plate, and the bubbles flow from bottom to top between the first separating net and the second separating net. When the bubble rises to the liquid level of the effusion, the acid mist in the bubble is blocked by the first isolation strip and the second isolation strip, and the gas in the bubble overflows through the first isolation strip and the second isolation strip .
The inductive suppression electrodeposited acid mist process according to claim 9, wherein a first isolation strip and a second isolation strip are respectively disposed on both sides of the top of the anode plate in the step, so that the first isolation strip and the second isolation strip The steps further after the first isolation net and the second isolation net are respectively included:

Select the diaphragm cloth, inner frame and outer frame that meet the requirements, and insert the selected diaphragm cloth into the outer frame through the inner frame;

Inserting the anode plate together with the first isolation net, the second isolation net, the first isolation strip and the second isolation strip into the inner frame, and the first and second isolation strips and the diaphragm cloth connect them;

Wherein, the gap between the first isolation net and the side of the anode plate is 2-50 mm, and the gap between the second isolation net and the anode plate side is also 2-50 mm.