Why the electrodes are made of graphite? Life of graphite electrode
By:Amanda Jun 19, 2020
The life of a graphite electrode is closely related to its production materials, So let DanCarbon talk about Why the electrodes are made of graphite? Life of graphite electrode and Life of graphite electrode.
1. Why the electrodes are made of graphite?
Electrodes are made of graphite because only graphite can withstand such intense heat. The furnace is then tipped on its side to pour the molten steel into giant buckets called ladles. The ladles then carry the molten steel to the steel mill's caster, which makes new products from the recycled scrap.
2. Is graphite an inert electrode?
The electrolysis time in the laboratory is short, basically at normal temperature, so the oxidation of graphite is not obvious. In industry, when smelting aluminum using graphite as the electrode electrolytically fused alumina, the anode carbon is easily oxidized to carbon dioxide, and carbon needs to be replenished regularly
Inertness refers to properties that do not readily react with other substances. Inert electrodes are those that are not susceptible to corrosion and are not easily involved in the reaction. Common inert electrodes are graphite and platinum.
3. Life of graphite electrode
One of the reasons affecting the life of a graphite electrode is its own density. Studies have shown that, 1. 5 and 1. 7 density life comparison, the latter is more than twice as large as the first.The higher the density, the longer the service life. Secondly, the control of the layout of the graphite electrode material also determines the lifespan.
The life of a graphite electrode is closely related to its production materials. The main raw material of the graphite electrode is crystalline natural graphite.Therefore, it has natural graphite conductivity, initial good thermal and high temperature resistance.
The graphite electrodes is in use, the thermal expansion coefficient is small, in heat , quenches with some resistance to voltage properties. Due to its excellent chemical resistance, strong corrosion resistance to acids and alkaline solutions, the use of graphite electrodes, avoiding direct contact of the flame with the electrode, otherwise it will affect the life of the oxidation of the raw materials of the electrode.