The electrolyzer is very important in copper, zinc, lead, nickel and other heavy metals hydrometallurgy equipment. With the industrial development of China's nonferrous heavy metals, use the number of the cell is increasing. Domestic copper cathode production capacity has reached more than 1.6 million tons, the cathode zinc production capacity has reached more than 1.7 million tons. According to incomplete statistics, the smelter has copper and zinc electrolytic cell by more than 6,000 units. Ready to be launched in recent years will be about 50 million tons of copper and zinc smelter visible, the electrolytic cell has a wide range of markets, and the need to conduct research and development structure and materials of the electrolyzer. A few years ago, mainly to improve the anti-corrosion materials of the electrolyzer, in recent years the development of the overall material of the tank, and achieved gratifying results, to promote the development of the electrolyzer products.
    First electrolytic cell using a wooden tank lined with lead, then switch to the reinforced concrete tank, with the development of China's anti-corrosion materials, lining materials developed by the lead, soft plastic to glass fiber reinforced plastic. However, due to the production of such electrolyzer man-made factors, such as the thickness of the concrete tank, place ramming more difficult, it is difficult to ensure that the tank straight and consistency, has brought a greater trouble to install have a close relationship, the quality of the lining, the lining of quality problems, give the production a certain impact. In order to solve the above ills, development assembled the resin concrete electrolyzer and overall FRP electrolyzer of steel frame sets PVC tank, thus creating a precedent for China's electrolytic cell structure light and continue to progress.
    Foreign electrolytic cell structure development is very rapid, developed in the 1960s in the United States (CTI) 80 polymer (polyethylene) concrete as a whole electrolyzer, its excellent corrosion resistance and high strength properties, more than 70 countries in the world smelter . 20000 polymer concrete electrolytic cell. Another example is Japan since the 1970s, the new wet smelter, electrolytic cell structure, an abandoned the bulky concrete tank. The Sonangol smelter in Japan, Akita smelter steel frame structure, rigid PVC plate welded to the tank inner sleeve. Yan Island smelter smelter Iijima, Shenkang lead and zinc smelter, the steel rubber lined electrolyzer. This indicates that the structure of the new trend of foreign electrolyzer.
    Compared with the reinforced concrete structure electrolyzer, steel electrolytic cell has the following advantages:
    ① light weight. Only one-third of the weight of the electrolytic cell of the reinforced concrete. Thereby reducing the costs of civil foundation, can use lighter lifting equipment, such as the Northwest lead and zinc smelter plastic electrolyzer, just lifting 2.5 tons of insulation hook cranes, concrete electrolyzer, Need to bridge crane lifting 10 tons. Due to the light weight, installation, transportation more convenient.
    (2) production fast. According to drawings manufacture practice routine factory production, greatly reducing production deadlines.
    Province ③ investment. As mentioned above, the tank weight, the choice of lighter lifting equipment. In addition, the slot wall thickness is smaller than the reinforced concrete, so you can shorten the length of the rod of conductive plates, and reduce the plant area, to reduce the zinc electrolysis plant construction costs. The plastic set chastity (including steel frame, and so on) the cost of about 20% higher than the concrete electrolyzer, comprehensive comparison, plastic electrolyzer investment or more provincial.
    ④ long life. The steel electrolyzer have generally been used for more than 15 years has not been scrapped, concrete electrolyzer generally can be used up to 8 to 10 years (lined with glass fiber reinforced epoxy).
    In summary, the advantages of the lightweight structural electrolyzer is obvious. However, the quality and production of raw materials (such as polyvinyl chloride sheet) requirements are higher.
    A Synaptic Plastic Co., Ltd., Hunan plastic rotational molding technology used in the production of electrolytic cell liner. Not only greatly simplifies production and production engineering, but also improve the quality of the product. Liner for the overall molding, no internal stress, no welds, no defects, smooth inner surface, should not generate crystalline and difficult to crack, anti-aging, corrosion resistance and other characteristics, a light electrolytic cell structure than that of Japan, exist The essential difference with unparalleled advantages. This year, the company has developed a second generation product: rotational molding PE corrugated liner coat steel frame, to make the product more uniform wall thickness and increase the rigidity of the liner. The new product uses a steel frame, to make the product more compact appearance, its weight is only one sixth of the the electrolyzer weight of the steel-concrete shell. The appropriate product cost can be further reduced, the useful life of more extended. Therefore, the product won the outstanding technical innovation project certificate issued by the Hunan Provincial Economic and Trade Commission, and declared a national special issue. A legislation in this warm congratulations.
    Better able to meet the production requirements for the new product, according to the practice of electrolytic zinc production at home and abroad, especially to make two points Precautions for reference:
    1, the the electrolyzer both sides of the upper end of the steel, subject to the load of the plate In addition to considering the strength, but also need to consider the stiffness required to withstand long-term load, the deflection of the steel to be as small as possible. Otherwise it will cause poor contact between the plates, the cell voltage increases, leaving the power consumption increases, affecting production costs.
    2, the use of corrugated liner does have many advantages, such as to make the wall thickness more uniform, and increase the rigidity of the liner. But shall take into account the extent of corrugated bump. If the concave portion is too deep, the anode deposition therebetween causes the electrolysis-generated, so that the electrolytic cell cleaning problems, and affect the effect of the corrugations.
    The above two points, through in-depth research, careful design and production practices, will be a good solution. This new generation of products will continue to be in the electrolytic production industry promotion and use.