Views: 1
What is a titanium anode? The full name of titanium anode is Titanium oxide coated titanium anode (MMO).Also called KSA anode.(Size shape stable anode).The titanium substrate is coated with precious metal to make it have good electrocatalytic activity and conductivity.Titanium anode classification: according to the anode precipitated gas in the electrochemical reaction to distinguish,the precipitation of chlorine gas is called chlorine evolution anode,such as ruthenium coated titanium electrode:the precipitation of oxidation is called oxygen evolution anode,such as iridium coated titanium electrode and platinum titanium net/plate.Chlorine out anode (ruthenium-coated titanium):electrolyte chloride content is high:generally in the environment of hydrochloric acid and electrolytic seawater,electrolytic salt water environment.Such as ruthenium-iridium titanium anode,ruthenium-iridium tin titanium anode.Oxygen evolution anode (Iridium series coated titanium electrode):electrolyte is generally sulfuric acid environment.Corresponding products of our company are Iridium tantalum anode, iridium tantalum tin anode, high iridium anode.Platinum-plated anode (platinum titanium mesh/platinum titanium plate):titanium as the substrate.The surface is plated with precious metal platinum,and the coating thickness is generally 1-5um (micron).Platinum titanium mesh size is generally 12.7*4.5mm or 6*3.5mm.
At present domestic titanium anode mainly brush coating.This electrode has a very wide range of applications,titanium anode with its light and flexible production process,also known as DSA anode,compared with similar anode titanium anode superior performance has the following points;
1.The anode size is stable,and the distance between electrodes does not change during electrolysis, which can ensure electrolysis.The operation is carried out under stable tank voltage.
2.Low working power, small power consumption,DC power consumption can be reduced by 10-20%.
3.Titanium anode has long service life and strong corrosion resistance.
4.The dissolution of graphite anode and lead anode can be overcome,and the pollution of electrolyte and cathode products can be avoided,so the purity of metal products can be improved.
5.High current density,small overpotential,high catalytic activity of electrode,can effectively capture high production efficiency.
6.The short-circuit problem after lead anode deformation can be avoided and the current efficiency can be improved.
7.The shape is easy to make and can be refined with high precision.
8.The titanium matrix can be reused.
9.Low over potential characteristics,the surface between electrodes and electrode bubbles are easy to eliminate,can effectively reduce the voltage of electrolytic cell.Electrodeposition metal extraction is a method of preparing pure metal by cathode reduction of metal ions to be extracted from the electrolyte after leaching and purification.It is composed of Ti matrix,the precious metal coated on it and/or the precious metal oxide electrochemically active layer.In electrolytic metallurgy,the conventional lead alloy anode can be replaced.Under the same conditions, the voltage can be reduced and the power consumption can be saved.For example, electrolytic zinc production has been using lead alloy anodes containing small amounts of silver,antimony or calcium. Often appear the following problems:lead alloy electrode size is not stable;Oxygen evolution potential is too high (about 800mV);Corrosion occurs when the anode is polarized.Lead ions dissolve in the electrolyte and deposit on the cathode,contaminating metal zinc and affecting product quality.Titanium anode for electrodeposition metal can overcome the disadvantages of lead alloy anode and adapt to the electrodeposition conditions of high current density and narrow electrode spacing.Not only suitable for sulfate system,but also suitable for chlorine salt system and sulfate and chloride mixed system.
The earliest date from 1786 to more than 200 years ago.The process of electrolysis is to convert electrical energy into chemical energy.The most representative caustic soda industry aqueous solution electrolysis industry can explain the development history of electrode materials.Saline electrolysis at first in the laboratory,the use of platinum electrodes,natural carbon electrodes,natural.Graphite electrode,magnetic iron oxide electrode, lead dioxide electrode.These were the first electrode materials to be tested.Salt water electrolysis requires that the anode material has good spot catalytic performance for chlorine precipitation,good durability,and has the ability to inhibit oxygen precipitation.Graphite electrode was first used in industrial production.When the concentration of salt water is high,the graphite electrode can fully meet the above requirements,but in the long-term production,it is found that the graphite anode has the following shortcomings: large resistance.So the power consumption is large;With the progress of electrochemical reaction,the loss of graphite electrode is large,and the electrode distance changes,resulting in the instability of electrolytic production.The active surface of chlorination reaction is difficult to maintain.After the beginning of the 1960s, the petrochemical industry developed rapidly,many large ethylene plants were established in various places,and the synthesis production of organic chlorides increased greatly.This requires a big leap in chlor-alkali production. At this time, the graphite anode is required to have mechanical processing capacity to open holes in the graphite anode,the processing performance of the graphite anode itself is not very good,it is required to have a new material instead.The development of metal anodes is particularly important.The development of metal anodes has a long history.The earliest metal anodes were mainly platinum anodes, but they were expensive and not widely used.
From 1910 to 1940, the production of titanium sponge by magnesium thermal reduction and sodium thermal reduction was completed.And mass produce them.Titanium substrate anode exposed Angle, titanium is also known as:valve type metal, has a stable oxide layer protection,so that the anode electrode can not pass,so in brine electrolysis conditions have good durability and stability. Titanium metal can be freely machined, you can make titanium plate,titanium rod,titanium wire,titanium mesh, titanium tube,porous plate and so on.It is widely used.In addition to the development of coating electrodes in the 1960s,widely used in chemical industry,environmental protection, water electrolysis,water treatment,electrometallurgy,electroplating,metal foil production,electromechanical synthesis,electrodialysis,cathodic protection and many other industries.Qinhuang Water specializes in the production of titanium anode.Simply put, brush or spray precious metal oxide on the basis of titanium material.At present or internal titanium anode mainly brush coating.This electrode has a very wide range of applications,titanium anode with its light and flexible production process,also known as DSA anode,compared with similar anode titanium anode superior performance has the following points;The anode size is stable, and the distance between electrodes does not change during the electrolytic process,which can ensure that the electrolytic operation can be carried out under the condition of stable tank voltage.Low working power, small power consumption,DC power consumption can be reduced by 10-20%. Titanium anode has long service life and strong corrosion resistance.The solution of graphite anode and lead anode can be overcome and the pollution of electrolyte and cathode products can be avoided.High current density,small overpotential, high catalytic activity of electrode,can effectively capture high production efficiency.The short-circuit problem after lead anode deformation can be avoided and the current efficiency can be improved.The shape is easy to make and can be refined with high precision.The titanium matrix can be reused.Low overpotential characteristics,the surface between electrodes and electrode bubbles are easy to eliminate,can effectively reduce the voltage of electrolytic cell.
