The electrolytic cell is the core equipment for the nonferrous metal wet smelting production, and its technological advancement directly affects product quality and production efficiency. The vinyl resin integrally cast electrolytic cell was successfully invented by an American company in the 1990s and began to be used in the electrolytic copper production process. Due to its excellent corrosion resistance, thin wall and light weight, saving installation space and low maintenance costs, It has a long service life and is currently widely used in the world, and it is popularized in electrolytic processes such as zinc and nickel.
The electrolytic cell is composed of a cell body, an anode and a cathode, and the anode chamber and the cathode chamber are mostly separated by a diaphragm. According to the different electrolytes, it can be divided into three categories: aqueous solution electrolytic cell, molten salt electrolytic cell and non-aqueous electrolytic cell. When the direct current passes through the electrolytic cell, an oxidation reaction occurs at the interface between the anode and the solution, and a reduction reaction occurs at the interface between the cathode and the solution to prepare the desired product. The optimal design of the electrolysis cell structure and the reasonable selection of electrode and diaphragm materials are the keys to improving current efficiency, reducing cell voltage, and saving energy consumption. The cell body and inner lining of the traditional electrolyzer are independent of each other in structure and function. After the inner lining fails, the cell will soon be corroded and destroyed; and the vinyl resin electrolyzer combines the support function and the anti-corrosion function perfectly. , Using vinyl ester resin, quartz sand and curing agent, accelerator, etc. as the main raw materials, through the physical, chemical, mechanical and other composite processing methods to make multi-base composite materials, which has corrosion resistance, heat resistance, high mechanical strength, resistance Excellent performance such as high compressive strength.
The product has novel structure, strong integrity, thin tank wall, heat insulation and insulation, and does not generate induced current, which improves the amount of electrolyte and electrical efficiency. In addition, the excellent strength and hardness ensure that the tank body will not be damaged by the impact of the anode and cathode plates, which greatly extends the service life of the electrolytic cell. Due to its unique advantages, the vinyl ester resin integrally cast electrolytic cell has become an important equipment for the electrolysis process of non-ferrous metal smelting, and gradually replaced the traditional electrolytic cell. It is widely used in the wet metal smelting industry of copper, zinc, manganese, nickel and other metals.
However, my country's vinyl ester resin concrete electrolytic cell technology started late, and more than 90% of the existing various types of copper, zinc, and nickel electrolytic cells still use cement concrete lined with FRP. Although domestic non-ferrous metallurgical enterprises have long recognized the advantages of integrally cast vinyl resin concrete electrolyzers, vinyl resin concrete electrolyzers have not been widely used in my country due to the technological monopoly of foreign companies and the high cost of international transportation.