graphite electrode carbon block
Slag drop problem of graphite electrode carbon block for electrolysis
We know that graphite has many advantages compared with copper, such as processing speed, high-speed grinding speed is 3 times faster than copper, high-speed grinding and polishing speed is 5 times faster than copper, good machinability, complex geometric modeling, light weight, Less than 1/4 of the copper, the electrode is easy to maintain; it can reduce the number of single electrodes, and can be bundled in a combined electrode, and finally has good thermal stability, no deformation, no processing burrs and other advantages.
Graphite has so many high-quality properties, but is the problem of slag falling during electrolysis a shortcoming of graphite?
In fact, electrolytic graphite requires the use of high-purity graphite materials. Slagging is caused by graphite impurities that contain a large amount of binder. The adhesive reacts with the solution and loses the role of the adhesive. In addition, some graphite rods produced are very soft because of insufficient pressure during this process.
When the adhesive changes when it encounters the dissolving liquid, the very soft graphite rod will of course drop slag or melt in the dissolving liquid. However, graphite has the characteristics of acid and alkali resistance, and will not lose slag and dissolve in the solution for a long period of time. Therefore, it is necessary to use high-purity graphite electrode carbon block rods, high-purity graphite electrode carbon block rods, after multiple high-temperature roasting and impregnation, high-temperature roasting at 2000℃ for a long time, so that part of the binder is completely volatilized, so as to achieve high-purity graphite. The purpose is to greatly improve the performance of graphite. When the graphite contains other substances, it will cause the reduction and decrease of graphite performance, so that the graphite electrode carbon block rod containing the binder is dispersed in the solution, so slag drop is very normal. This article chooses: graphite electrode carbon block.