Copper electrolysis low tank capable of reducing potential safety hazards

Abstract

The copper electrolysis low-position tank capable of reducing the potential safety hazards comprises a filtering tank, a middle tank, a circulating tank and an accident tank, the outlet end of the filtering tank is communicated with an inlet of the middle tank, an inlet and an outlet of the circulating tank are both communicated with the middle tank, and the middle tank is further communicated with the accident tank; the filtering tank, the middle tank, the circulating tank and the accident tank are all welded into frameworks through square pipes, steel plates are laid on the bottom faces of the frameworks, glass fiber reinforced plastic formworks are fixedly connected into the frameworks through bolts to form the side walls, the bottom wall and the top wall of the tank body, and an anti-corrosion structure is laid on the inner wall face of the tank body and comprises woven roving on the bottom layer, and a layer of felt is laid on the woven roving. A layer of resin is laid on the felt, and a layer of polyester fabric is laid on the resin; according to the utility model, the corrosion resistance is greatly enhanced, the condition of the tank body can be conveniently checked in the operation process, and the problems of safety and environmental protection are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of copper electrolysis production in smelters, and particularly to a copper electrolysis low-position tank for reducing potential safety hazards. Background Art

[0002] During the copper electrolysis production process, impurity elements and additives in the anode plates are enriched during the electrolysis production process. The electrolysis production requires the electrolyte to circulate continuously to make the copper ion concentration, sulfuric acid concentration, electrolyte temperature, and additive composition distribution in the tank uniform. The impurity elements and additives are purified and decontaminated by transporting the electrolyte through the low-position tank to ensure the stability of the electrolyte composition. The low-position tank is used for filtering and circulating the electrolyte. The electrolyte in the low-position tank is transported to the high-position tank after passing through the plate heat exchanger and then enters the electrolytic cell for continuous circulation. The traditional low-position tank is of a nested tank design, that is, the main structure is in the form of a concrete skeleton plus a fiberglass-reinforced plastic anti-corrosion layer. The main problems are as follows: Operators cannot check the condition of the low-position tank during its operation. The fiberglass-reinforced plastic is prone to breakage and the concrete skeleton is corroded during the operation of the low-position tank, eroding the pool body. There is a safety risk of collapse of the main structure of the tank body. Conventional detection is difficult to effectively detect the corrosion condition. The electrolyte leaks outside the pool, polluting the soil and groundwater. The low-position tank has perforations and leaks, and the concrete and soil dissolve into the electrolyte, causing the composition of the electrolyte to be unstable and affecting the operation of the electrolysis production. Summary of the Utility Model

[0003] In order to solve the above technical problems, the utility model provides a copper electrolysis low-position tank for reducing potential safety hazards.

[0004] The specific scheme of the utility model is as follows: A copper electrolysis low-position tank for reducing potential safety hazards includes a filtering tank, an intermediate tank, a circulating tank, and an accident tank. The outlet end of the filtering tank is communicated with the inlet of the intermediate tank. The inlet and outlet of the circulating tank are both communicated with the intermediate tank. The intermediate tank is also communicated with the accident tank. The filtering tank, the intermediate tank, the circulating tank, and the accident tank are all welded into a skeleton with square pipes. A steel plate is laid on the bottom surface of the skeleton. The inner side walls, bottom wall, and top wall of the tank body are formed by fixing fiberglass-reinforced plastic templates inside the skeleton through bolts. An anti-corrosion structure is laid on the inner wall surface of the tank body. The anti-corrosion structure includes a bottom layer of square cloth, a layer of felt is laid on the square cloth, a layer of resin is laid on the felt, and a layer of polyester cloth is laid on the resin.

[0005] Preferably, each tank body is connected by a fiberglass pipe and a stainless steel-lined corrugated compensator.

[0006] Preferably, there are two intermediate tanks, namely a first intermediate tank and a second intermediate tank. The filtering tank is connected to the first intermediate tank, the accident tank is connected to the first intermediate tank, the first intermediate tank is connected to the second intermediate tank, and the second intermediate tank is connected to the circulating tank.

[0007] Preferably, the FRP formwork is connected to the framework by bolts.

[0008] Compared with the prior art, the utility model has the following beneficial effects: the corrosion resistance is greatly enhanced, and it is convenient to check the condition of the tank during operation, avoiding the occurrence of safety and environmental protection problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a schematic structural diagram of the low-level tank of the utility model;

[0010] Figure 2 is a schematic structural diagram of the circulation tank of the utility model;

[0011] Figure 3 is Figure 2 a side view of DETAILED DESCRIPTION OF THE EMBODIMENTS

[0012] As Figures 1-3 shown, this embodiment is a copper electrolysis low-level tank for reducing safety hazards, including a filtration tank, an intermediate tank, a circulation tank and an accident tank. The outlet end of the filtration tank is communicated with the inlet of the intermediate tank. The inlet and outlet of the circulation tank are both communicated with the intermediate tank, and the intermediate tank is also communicated with the accident tank. The filtration tank, the intermediate tank, the circulation tank and the accident tank are all welded into a framework with square pipes. A steel plate is laid on the bottom surface of the framework. Inside the framework, an FRP formwork is fixedly connected by bolts to form the side wall, bottom wall and top wall of the tank. An anti-corrosion structure is laid on the inner wall surface of the tank. The anti-corrosion structure includes a grid cloth at the bottom layer, a layer of felt is laid on the grid cloth, a layer of resin is laid on the felt, and a layer of polyester cloth is laid on the resin.

[0013] Preferably, the resin adopts Shanghai Huachang MEF-2 vinyl resin or Shangwei Company SW901 vinyl resin.

[0014] Preferably, each tank is connected by a glass steel pipe and a stainless steel lined corrugated compensator. The prefabricated parts can be manufactured in advance and have unified specifications, ensuring the same expansion coefficient and small leakage risk.

[0015] Preferably, there are two intermediate tanks, namely a first intermediate tank and a second intermediate tank. The filtration tank is connected to the first intermediate tank, the accident tank is connected to the first intermediate tank, the first intermediate tank is connected to the second intermediate tank, and the second intermediate tank is connected to the circulation tank.

[0016] Preferably, the FRP formwork is connected to the framework by bolts.

[0017] During operation, the electrolyte in the filtration tank flows by gravity to the middle tank. After the suspended particles settle in the middle tank, the electrolyte enters the circulation tank, and the electrolyte in the circulation tank is transported to the subsequent process; the accident tank is an electrolyte storage tank in case of emergency. When the system power is cut off or during maintenance, the remaining liquid in the pipeline flows back and is temporarily stored in the accident tank. Since the tank body of the present utility model is made of a skeleton plus a fiberglass reinforced plastic formwork lining, it can be placed on the ground surface. Therefore, the staff can directly observe the situation of each tank body, promptly detect leaks and perform repairs in a timely manner.

Claims

1. A copper electrolysis low-position tank for reducing safety hazards, characterized in that: It includes a filtration tank, an intermediate tank, a circulation tank and an accident tank. The outlet end of the filtration tank is communicated with the inlet of the intermediate tank. The inlet and outlet of the circulation tank are both communicated with the intermediate tank, and the intermediate tank is also communicated with the accident tank. The filtration tank, the intermediate tank, the circulation tank and the accident tank are all welded into a framework with square pipes. A steel plate is laid on the bottom surface of the framework. A fiberglass template is fixedly connected to the inside of the framework by bolts to form the side wall, bottom wall and top wall of the tank body. An anti-corrosion structure is laid on the inner wall surface of the tank body. The anti-corrosion structure includes a bottom layer of square cloth, a layer of felt is laid on the square cloth, a layer of resin is laid on the felt, and a layer of polyester cloth is laid on the resin.

2. A copper electrolysis low-level tank for reducing potential safety hazards according to claim 1, characterized in that: The various tanks are connected by fiberglass pipes and stainless steel lined bellows compensators.

3. A copper electrolysis low-position tank for reducing potential safety hazards according to claim 1, characterized in that: There are two intermediate tanks, namely the first intermediate tank and the second intermediate tank. The filtration tank is connected to the first intermediate tank, the accident tank is connected to the first intermediate tank, the first intermediate tank is connected to the second intermediate tank, and the second intermediate tank is connected to the circulation tank.

4. A copper electrolysis low-position tank for reducing potential safety hazards according to claim 1, characterized in that: The fiberglass template is connected to the framework by bolts.

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