Electrolytic extraction of non-ferrous metal insoluble anode titanium plate / iridium oxide titanium anode plate for electrodeposition of copper, nickel and cobalt.

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In the electrolytic extraction of non-ferrous metals in the hydrometallurgical industry, common solution systems include chloride solution, sulfate solution, and chloride mixed solution. The graphite, lead alloy and lead dioxide anodes used in traditional methods have various problems in practical applications, especially the problem of secondary pollution. With the increasingly strict environmental protection requirements in recent years, titanium has been gradually used as The substrate is replaced by a noble metal oxide anode.
When the electrolytic solution system is different, the gas evolved from the anode is also different. When the anode works in different environments, the required active components of various coatings with different properties are also different. After years of research and development and practice, HS metal has produced coated titanium anodes with different formulations for hydrometallurgy. In the actual factory production of customers, it has effectively reduced energy consumption and achieved obvious economic benefits.

Application display of titanium anode for electrolytic copper extraction：

1. Coated titanium anode for electrolytic extraction of non-ferrous metals from chloride solution

When the non-ferrous metals are electrolytically extracted in this solution, the chlorine evolution reaction occurs on the anode. Active coatings require low chlorine overpotential, good electrical conductivity, strong chlorine corrosion resistance, and long anode life. The requirements for the anode are relatively high. According to the characteristics of the solution system, E-Ride Technology adjusted the number of coating brushes. After a large number of pain formula screening tests, after selecting the addition of two active elements, the anodizing potential was increased and the time was prolonged. service life.

2. Coated titanium anode for electrolytic extraction of non-ferrous metals with sulfate solution

This solution system electrodeposition metal often uses lead and silver anodes, but during the electrolysis process, the anode will dissolve, which not only consumes the anode material, but also affects the service life of the anode, and the lead dissolved in the solution will precipitate on the cathode, making the The lead impurity of the product increases, which reduces the quality of the product. Oxygen evolution reaction mainly occurs on the anode when metal is electrodeposited from sulfuric acid salt solution. The requirements for the anode are high electrocatalytic activity, good durability to oxygen, and long working life of the anode.
In order to overcome the problems existing in the use of traditional anodes, after years of efforts and continuous exploration, HS metal has developed a titanium anode with a new coating formula, mainly using Ir as the main element, adding ternary or quaternary formula coating, electrocatalytic activity Strong, good electrical conductivity, effectively reduce the cell voltage, and at the same time, also improve the service life of the anode.

3. Coated titanium anodes for chloride and mixed solutions

During electrolysis in the solution of the mixed system, oxygen evolution and chlorine evolution reactions will occur on the anode. When the concentration of sulfuric acid solution increases, the oxygen evolution reaction on the anode is intensified, which will reduce the current efficiency of chlorine evolution and affect the anode service life of the active coating. On the formula coating of Ir and Ru elements developed by HS metal, the active element palladium is added, which is conducive to the progress of the chlorine evolution reaction and inhibits the progress of the oxygen evolution reaction. It improves corrosion resistance, suppresses the adverse effects of sulfate radicals when electrodepositing metals in mixed solutions, and prolongs the service life of anodes.

With the development of industry in recent years, the composition of the solution system has become more and more complex. How to improve the efficiency of electrodeposited metal, reduce energy consumption, and protect the environment has always been the proposition of HS metal’s “green technology – quality first” product development.

Product Display of Titanium Anode for Electrolytic Copper Extraction：

Iridium oxide anode plate for electrolytic copper extraction—-titanium coated iridium tantalum coated anode titanium plate

The anode plate used for electrodeposition of non-ferrous metals is coated with titanium-based noble metal mixed oxide, and different types of coatings are formulated according to the insoluble system. It can be cited in the electrolytic extraction of non-ferrous metals such as copper, nickel, cobalt, gold and silver. As an insoluble auxiliary anode material, it is used more and more because of its good electrocatalytic performance, not easy to pollute the solution, and high purity of the metal precipitated from the cathode.
The titanium anode plate developed and produced by HS metal for electrolytic extraction of non-ferrous metals can be applied to a variety of solution systems after continuous improvement of the coating process and production process. It has strong corrosion resistance, high electrolysis efficiency and long service life. According to the use of anode plates, it can provide technical services for refurbishment and coating, and after-sales service is guaranteed.

HS metal copper ion recovery titanium anode plate

1. Coating type: The coating provided by our company can be selected, iridium-tantalum mixed metal oxide coating, platinum-iridium-tantalum mixed metal oxide coating, platinum-plating layer, etc.
2. Anode shape: sheet, plate, mesh, rod, etc.
3. Anode size: It can be selected according to the size of the customer’s electroplating tank and electroplating conditions; the size can reach 2.5m x 1.2m.
4. Current density: 600—1500A/m2
5. Service life: About 3 years

Advantages of electrolytic extraction of metal titanium anodes:

1. Low cell voltage and low energy consumption
2. The rate of electrode loss is small and the size is stable
3. The corrosion resistance of the electrode is good, and the anode is less integrated into the bath.
4. The titanium anode adopts a new type of material and structure, which greatly reduces its weight and facilitates daily operation
5. During the production of titanium anode, the bottom layer is coated with an active layer, which enhances the activity and life of the anode.
6. Long service life, and the substrate can be reused, saving costs
The oxygen evolution overpotential is about 0.5V lower than that of the lead alloy insoluble anode, which reduces the cell voltage and reduces energy consumption.

1. How to choose titanium anode for electrolytic extraction of non-ferrous metals

Electrolytic extraction of non-ferrous metals requires anodes that are stable, corrosion-resistant, can be used for a long time, and have good electrocatalytic activity during the anode process to reduce the overpotential and cell voltage of the anode reaction. Titanium anodes have been widely used in electrolytic extraction of non-ferrous metals in many domestic enterprises due to their superior performance.

In electrolytic metallurgy, it can replace the conventional lead alloy anode. Under the same conditions, it can reduce the voltage and save power consumption. Electrometallurgical metal titanium anodes developed by E-Ride Technology can be applied to electrometallurgy of non-ferrous metals such as Zn, Cd, Cu, Mn, Co, Ni, Cr, etc.

2. Product advantages:

Taking the electrowinning of cobalt chloride solution as an example, the cell voltage of the graphite anode is 4.1V, while that of the coated titanium anode is 3.7V, the current efficiency is increased from 91.5% to 94%, and the energy saving of 1t cobalt is 400kw.h, which can save energy by 11%. .

Electrolytic production of Zn has always used lead alloy anodes containing small amounts of silver, antimony or calcium. The following problems often occur: the lead alloy electrode is unstable in size; the oxygen evolution potential is too high (about 800mV); corrosion occurs when the anode is polarized; lead ions are dissolved in the electrolyte and deposited on the cathode cylinder, polluting the precipitated metal and affecting the product quality.

The MMO-coated titanium anode for electrolytic extraction of non-ferrous metals can overcome the drawbacks of lead alloy anodes, and is suitable for high current density operation and electrowinning conditions with narrow electrode spacing; it is suitable for chloride salt systems and chloride mixed systems.

3. Electrolytic copper extraction, electrodeposited copper oxide iridium coated titanium anode plate

1. Substrate: TA1/TA2
2. Coating: iridium-tantalum mixed oxide, platinum-iridium mixed oxide
3. Current density: 200—1600a/sqm
4. Service life: 6M—3Y
5. Dimensions and service life can be customized according to the actual needs of customers.

HS metal has been focusing on the research, development and manufacture of electrocatalytic titanium electrode materials and deep-processed products for many years. You are welcome to inquire about new technologies and new applications of various electrocatalytic electrode materials!
Email:anber@bjhighstar.com