阅读说明：本技术 一种可收集酸雾的不溶性框状阳极结构 (Insoluble frame-shaped anode structure capable of collecting acid mist ) 是由 赵新泽 康轩齐 冯庆 徐尚元 韦震 万江凯 周小康 于 2020-07-14 设计创作，主要内容包括：本发明提供了一种可收集酸雾的不溶性框状阳极结构,包括框状阳极,框状阳极上固定连接两根连接筋,在连接筋顶端螺纹连接有导电螺杆,导电螺杆上端连接导电梁；在连接筋与导电螺杆之间固定有集气罩,集气罩下边缘密封连接有隔离膜,隔离膜尺寸与框状阳极匹配,框状阳极被完全包裹在集气罩与隔离膜形成的密闭空间内；在集气罩一侧设有酸雾导出口。本发明解决了目前采用整体的槽面密封集气盖无法观察到槽面的通电运行情况、无法及时排查短路情况而易引发火灾,以及阴极出槽时必须整体吊装导致操作繁琐、工人劳动强度大等问题。(The invention provides an insoluble frame-shaped anode structure capable of collecting acid mist, which comprises a frame-shaped anode, wherein two connecting ribs are fixedly connected to the frame-shaped anode, the top ends of the connecting ribs are in threaded connection with a conductive screw, and the upper end of the conductive screw is connected with a conductive beam; a gas-collecting hood is fixed between the connecting rib and the conductive screw, the lower edge of the gas-collecting hood is hermetically connected with an isolating film, the size of the isolating film is matched with that of the frame-shaped anode, and the frame-shaped anode is completely wrapped in a closed space formed by the gas-collecting hood and the isolating film; an acid mist outlet is arranged at one side of the gas-collecting hood. The invention solves the problems that the current integral tank surface sealing gas collection cover cannot observe the electrified operation condition of the tank surface, cannot check the short circuit condition in time and is easy to cause fire, and the cathode is required to be integrally hoisted when being discharged from the tank, so that the operation is complicated, the labor intensity of workers is high, and the like.)

1. An insoluble frame-shaped anode structure capable of collecting acid mist is characterized by comprising a frame-shaped anode (3), wherein a connecting rib (7) is fixed on the frame-shaped anode (3), a conductive screw (6) is connected to the top end of the connecting rib (7) in a threaded manner, and the upper end of the conductive screw (6) is connected with a conductive beam (1); a gas-collecting hood (2) is fixed between the connecting rib (7) and the conductive screw (6), the lower edge of the gas-collecting hood (2) is hermetically connected with an isolating membrane (4), the size of the isolating membrane (4) is matched with that of the frame-shaped anode (3), and the frame-shaped anode (3) is completely wrapped in a closed space formed by the gas-collecting hood (2) and the isolating membrane (4); an acid mist outlet (5) is arranged at one side of the gas-collecting hood (2).

2. The insoluble frame-shaped anode structure for collecting acid mist of claim 1, wherein the isolating membrane (4) is made of 3751 terylene fabric and has permeability; the isolating membrane (4) is pocket-shaped, the length, the width and the height of the isolating membrane are respectively 20-40 mm larger than the corresponding size of the frame-shaped anode (3), and the upper edge of the isolating membrane is tightly connected with the gas collecting hood (2) through a plastic frame clamp sealing ring (8).

3. The insoluble frame-shaped anode structure capable of collecting acid mist according to claim 1, wherein the frame-shaped anode (3) is composed of a frame and a titanium mesh fixed on the frame, and the titanium mesh is one of a flat mesh, a wave mesh and a concave-convex mesh structure.

4. The insoluble frame-shaped anode structure capable of collecting acid mist as claimed in claim 1, wherein the conductive core of the conductive beam (1) is T1 red copper, and the exterior is plated with a silver anti-corrosion layer.

5. The insoluble frame-shaped anode structure capable of collecting acid mist as claimed in claim 1, wherein the joint of the conductive screw (6) and the gas-collecting hood (2) is sealed by a rubber gasket.

6. Insoluble frame-like anode structure for collecting acid mist according to claim 1, characterized in that the acid mist outlet (5) is connected with a suction fan or a negative pressure pump.

7. Insoluble frame-like anode structure for acid mist collectable according to claim 1, characterized in that said gas-collecting hood (2) is made of transparent visible material.

8. The insoluble frame-shaped anode structure for collecting acid mist of claim 1, wherein the number of the connecting ribs (7) and the number of the conductive screws (6) are equal, and two connecting ribs are provided.

Technical Field

The invention belongs to the technical field of hydrometallurgy electrodeposition, and particularly relates to an insoluble frame-shaped anode structure capable of collecting acid mist.

Background

In the hydrometallurgical process of nonferrous metals such as zinc, copper, nickel, cobalt, manganese and the like, a lead alloy anode or a graphite anode has been used for many years, and in a sulfate system, the lead alloy anode is widely applied because of low price, easy forming and strong self-repairing, but has the problems of low mechanical strength, easy deformation, short service life, serious anode lead slime and the like. In a chloride system, graphite anode materials are frequently used in the past, and the graphite anode has the disadvantages of high resistance, high electric energy consumption, low strength, easy loss, short service life, pollution to cathode products and difficulty in obtaining high-purity cathode products. The titanium-based metal oxide anode (DSA) adopts industrial pure titanium as a base material, has high mechanical strength, high plasticity and strong corrosion resistance, can change different metal oxide coating systems according to different environments of electrolyte, has stable performance and long service life, and is continuously accepted and applied by the industry.

During electrodeposition, gases are always evolved on the insoluble anode, in addition to the cathodic main metal ions being electrodeposited. In the chloride system, chlorine gas is separated out from the anode, and the chlorine gas has strong toxicity and must be collected in a centralized way. When metal is electrodeposited in a sulfate system, the used anodes are oxygen evolution anodes, such as iridium-based coated titanium anodes and lead dioxide-coated titanium anodes. The anode reaction is to generate oxygen to generate hydrogen ions for enrichment, the process is acid-making reaction, the generated oxygen is flushed out of the electrolyte, and part of acid is brought into the air to form acid mist. The existing treatment method is mostly implemented by sealing an integral tank surface sealing gas collecting cover, when an electrolytic tank is electrified to work, acid mist in the gas collecting cover is pumped to an absorption tower through a fan for treatment, the gas collecting cover is huge and opaque, the electrified running condition of the tank surface cannot be observed, the short circuit condition cannot be checked in time, and a fire disaster is very easy to cause; meanwhile, when the cathode is discharged from the cell, the cathode must be integrally hoisted, the field operation is complicated, the labor intensity of workers is high, an acid mist inhibitor method or a foam ball covering method is adopted, but the effect is general, the cost is high, and the operation is complex.

Disclosure of Invention

The invention aims to provide an insoluble frame-shaped anode structure capable of collecting acid mist, and solves the problems that the current integral tank surface sealing gas collection cover cannot observe the electrified operation condition of the tank surface, cannot timely check the short circuit condition and is easy to cause fire, and the cathode must be integrally hoisted when being discharged from a tank, so that the operation is complicated, the labor intensity of workers is high, and the like.

The invention is realized by the following technical scheme:

an insoluble frame-shaped anode structure capable of collecting acid mist comprises a frame-shaped anode, wherein a connecting rib is fixed on the frame-shaped anode, the top end of the connecting rib is connected with a conductive screw rod in a threaded manner, and the upper end of the conductive screw rod is connected with a conductive beam; a gas-collecting hood is fixed between the connecting rib and the conductive screw, the lower edge of the gas-collecting hood is hermetically connected with an isolating film, the size of the isolating film is matched with that of the frame-shaped anode, and the frame-shaped anode is completely wrapped in a closed space formed by the gas-collecting hood and the isolating film; an acid mist outlet is arranged at one side of the gas-collecting hood.

Furthermore, the isolating membrane is made of 3751 polyester fabric and has permeability; the isolating membrane is pocket-shaped, the length, width and height of the isolating membrane are respectively 20-40 mm larger than the corresponding size of the frame-shaped anode, and the upper edge of the isolating membrane is tightly connected with the gas collecting hood through a plastic frame clamp sealing ring.

Further, the frame-shaped anode is composed of a frame and a titanium net fixed on the frame, and the titanium net is one of a flat net, a wave net and a concave-convex net structure.

Furthermore, the conductive core of the conductive beam is made of T1 red copper, and the exterior of the conductive beam is plated with a silver anti-corrosion layer.

Furthermore, the joint of the conductive screw and the gas-collecting hood is sealed by a rubber gasket.

Further, the acid mist outlet is connected with an exhaust fan or a negative pressure pump.

Further, the gas collecting hood is made of transparent visible materials.

Furthermore, the number of the connecting ribs is equal to that of the conductive screws, and the number of the connecting ribs is two.

The invention has the beneficial effects that:

the application adopts the frame-shaped anode, enlarges the contact area of the titanium anode and the electrolyte, reduces the current density actually born by the anode, and prolongs the service life of the anode. Meanwhile, when air is exhausted, the isolating membrane on the outer side of the anode can be supported, and the inner side of the anode frame can be ensured to have enough space for storing electrolyte.

The gas-evolving anode is integrally assembled into a closed structure, acidic harmful gas generated by electrodeposition is uniformly discharged from a guide outlet, the field working condition environment is improved, clean production is realized, and the problem that the cathode needs to be integrally hoisted when being discharged from a tank in the traditional method is solved. In addition, traditional diaphragm bag need use the plastics diaphragm frame to support, can occupy a large amount of electrolysis trough spaces, and the single cell output is low, and the use of frame form positive pole has avoided the plastics isolation frame that traditional individual layer positive pole outside need install additional, has reduced engineering plastics's use, and frame form positive pole can be used for depositing electrolyte in the inboard sufficient space of formation of positive pole, and the at utmost reduces the utmost point interval, increases negative and positive pole quantity, improves the electrolysis trough utilization ratio.

The gas-collecting hood is designed to be transparent, so that the electrified operation condition of the slot surface can be conveniently observed.

Drawings

FIG. 1 is a front view and a side view of the structure of the present invention;

FIG. 2 is a schematic sectional view of the lower part A-A of a frame-shaped anode, wherein three titanium nets are respectively of a flat net, a wave net and a concave-convex net structure from top to bottom;

in the fig. 1 and 2, 1, a conductive beam, 2, a gas collecting hood, 3, a frame-shaped anode, 4, an isolating membrane, 5, an acid mist outlet, 6, a conductive screw, 7, a connecting rib, 8 and a plastic frame clamp sealing ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1, an insoluble frame-shaped anode structure capable of collecting acid mist comprises a frame-shaped anode 3, two connecting ribs 7 are fixedly connected to the frame-shaped anode 3, a conductive screw 6 is connected to the top end of each connecting rib 7 through a thread, and the upper end of each conductive screw 6 is connected to a conductive beam 1; a gas-collecting hood 2 made of transparent visual materials is fixed between the connecting rib 7 and the conductive screw 6, the joint of the conductive screw 6 and the gas-collecting hood 2 is sealed by a rubber gasket, the lower edge of the gas-collecting hood 2 is connected with an isolating membrane 4 in a sealing way, the size of the isolating membrane 4 is matched with that of a frame-shaped anode 3, and the frame-shaped anode 3 is completely wrapped in a closed space formed by the gas-collecting hood 2 and the isolating membrane 4; an acid mist outlet 5 is arranged on one side of the gas-collecting hood 2, and the acid mist outlet 5 is connected with an external equipment exhaust fan. Can carry out convulsions at acid mist delivery port, make airtight space forms the negative pressure state, and during electrolyte got into the barrier film, during anode power-on work, acid mist was directly taken out by the delivery port, avoided acid mist directly to discharge in the environment at the electrodeposition in-process.

The conductive core of the conductive beam 1 is T1 red copper, the outside is plated with a silver anticorrosive coating, the radial section dimension (thickness) is determined according to the anode electrifying current, and the current is conducted to the anode plate surface by contacting with the copper bar of the tank body.

The isolation film 4 is made of 3751 terylene cloth and has permeability; the isolating membrane 4 is pocket-shaped, the length, the width and the height of the isolating membrane are respectively 40mm larger than the corresponding size of the frame-shaped anode 3 (the isolating membrane and the frame-shaped anode are separated by the distance of the size, so that the isolating membrane and the frame-shaped anode can not be tightly attached together when the sealed space is vacuumized), and the upper edge of the isolating membrane is tightly connected with the gas collecting hood 2 through a plastic frame clamp sealing ring.

As shown in fig. 2, the frame-shaped anode is composed of a frame and a titanium mesh fixed on the frame, the titanium mesh is one of a flat mesh, a wave mesh and a concave-convex mesh, and the present embodiment is a flat mesh structure.

The insoluble frame-shaped anode is placed in a cobalt chloride electrolytic cell to operate, the cathode and the anode are staggered, the polar distance of the same name is controlled to be 60-130 mm, the electrifying current of a single anode is 370A, the cell voltage is 3.2V, and the service life of the anode exceeds 60 months.

The frame-shaped anode acid mist outlet is connected to the gas collecting pipeline on one side of the tank body, air is sucked at the acid mist outlet, a negative pressure state is formed in the anode frame, electrolyte enters the isolating membrane, chlorine is directly pumped out from the outlet when the anode is electrified to work, centralized treatment is carried out, no acid mist exists on the operation site basically, and the acid mist is prevented from being directly discharged to the environment in the electrodeposition process.