Electrolysis is the process that the ion transforms into the electrolyte solution or fused electrolyte, bringing about the redox reaction and the substance withdrawal. Normally metal and pure gases are produced through electrolysis, such as magnesium chloride electrolysis magnesium, sodium chloride electrolysis sodium, hydrogen fluoride electrolysis fluorine. Electroplating is a process for coating a new layer of metal or alloy on metal products by electrolysis. Graphite materials like graphite anode powder act as anodes in electrolysis and electroplating.
Advantages of Graphite Anodes
Different grades of graphite material are selected based on different process conditions and electrolyte type. For example, extruded graphite electrode material applied for sodium magnesium electrolysis, while carbon anodes are applied for fluorine electrolysis. Professionals have a deep understanding of electrolysis and electroplating and are able to select the most suitable grade of graphite material for users.
Strong Machining Capacity
Graphite anodes are mainly plates and rods, while some are difficult to machine due to complicated shapes and high hardness. Professionals are able to guarantee accurate machining for all shapes and sizes.
Introduction to Graphite Anodes for Rare Earth Casting
The molten salt electrolysis process is widely used in rare earth foundry, with graphite material as anodes, metal as cathodes. The rare earth metal is separated at the anode or cathode side by electrolysis. Different grades of graphite material are required based on rare-earth types and electrolysis conditions.
Advantages of Rare Earth Casting Graphite Anodes
Cost-effective graphite material solutions
Professionals choose corresponding graphite material for machine graphite anodes according to rare earth type and electrolysis process, to achieve optimal electrolysis effect and cost.
There is little difficulty in machining graphite anodes for rare earth casting, and it is easy to guarantee the allowable tolerance. Professionals make the best of graphite material to improve yield rate, reduce production cost and reduce customers’ purchase cost eventually.
Electrolysis is always performed by placing a free-ion liquid substance that can be fused igneous electrolysis or mixed with water aqueous electrolysis in a container, called an electrolyte vat, with two electrodes immersed in it. It is these electrodes that are connected to a generator, which can be a battery or a battery and that will allow the current to flow through the liquid compound.
The main application of the electrodes is to transfer the electrons of the reagent species, so they do not need to participate in the reaction. For example, in the scheme below, we have the electrolysis of fused sodium chloride, NaCℓ. The inert electrodes used are graphite, which is inert, only for the metallic sodium and chlorine gas produced in the oxidation reactions to be deposited on them and then collected.
Another inert material that conducts electricity and is used as an electrode is platinum. But there are some cases where the electrodes participate in oxidation reactions and are therefore called active electrodes.
The negative electrode cathode is a high purity copper plate, while the positive electrode anode is a metallurgical copper plate, i.e. it contains small amounts of impurities, mainly iron and zinc but may also contain gold, silver and platinum. These electrodes are placed in an electrolytic tank with a copper sulfate solution and a potential difference is applied by passing an electrical current through the system.