Electrolysis (electrowinning) Metal

详情

ProductContent Electrolysis (electrowinning) non-ferrous metals Electrolytic extraction of non-ferrous metals including electrolytic extraction of metals and sulfate solution mixed chloride sulfate liquid electrolytic extraction of metals melt. 1, the electrolytic extraction of metal chloride solution Chloride melt liquid metal electrowinning, factories in the past using graphite anode, graphite resistance large, so power consumption, low strength of graphite anode, easy loss, working life is short, graphite cathode product contamination, it is difficult to obtain high purity metal. Chloride electrolyte solution, electrowinning metals, precipitation of chlorine on the anode, the most important characteristics of active coating over potential of low chlorine, conductivity and good resistance to chloride corrosion, anode and long service life. 2, the electrolytic extraction of metal sulfate solution Electrodeposition of metal sulfate solution commonly used lead-silver anodes, but in the electrolysis process, the lead-silver anode will dissolve both the anode material consumption, but also affect the working life of the anode, and lead dissolved in the solution will be precipitated on the cathode, impurities in the metal content of lead increased, reducing the product quality. Sulfate electrowinning metals, mainly produce oxygen on the anode, coated titanium electrode active coating of the most important feature is the point of oxygen catalytic activity, conductivity, and on the oxygen durability, long life anode, and anode conductive properties, compared with lead-silver anode, cell voltage can be reduced 0.5V, to produce 1 ton of finished products, energy-saving rate of *7%. 3, the chloride electrolytic extraction of metal sulphate mixture Sulfate-chloride electrolyte mixed system, the anode and simultaneous deposition of chlorine and oxygen, a very serious corrosion of the anode, the anode is more work under harsh conditions, according to my experience is the product produced by the actual running performance tests, add in the active coating active elements, titanium anodes in the reaction favor the release of chlorine and oxygen inhibition of the reaction, and can extend the working life of the anode. Electrolytic extraction of metals using insoluble anode, so that by the leaching, purification of the electrolyte in the extraction of metal ions in the cathode to be far, a system of pure metal. Electrowinning In the hydrometallurgy industry already accounts for a large proportion. Non-ferrous metallurgical production by electrolysis has Zn, Cd, Cu, Mn, Co, Cr, Ni and so on. Cathode electrolytic extraction using two. One is the beginning of reusable pole piece. When the metal pole piece in which the beginning of the deposition to a certain thickness (eg **3mm), the sediment layer is about stripping, and the beginning of a pole piece is used again. For example, the electrolytic extraction of zinc, the use of aluminum for the beginning of a pole piece; extraction of cobalt, the use of stainless steel; extraction of copper, the use of titanium. Another one-off kind of cathode plate, when the same kinds of metal deposited on its removal to a certain thickness after melting. In recent years, coated titanium electrode in the electrodeposition of metal areas have been widely used, stable quality, light weight, corrosion resistance, long life, very pitch stable, increase the current density, lower cell voltage, energy efficiency, size, flexible, customized according to user requirements, all aspects are indicative of the superiority of the titanium electrode.