The customization of graphite crucibles adopts better industrial application methods, which is the beginning of the design needs of future emerging industries, and people need to advocate for industrial spirit even more.
Graphite crucibles have the characteristics of high bulk density, high temperature resistance, fast heat transfer, acid and alkali corrosion resistance, high temperature strength, and high oxidation resistance. Therefore, graphite crucibles are inevitably used to prevent Corrosive substance during use. Graphite crucibles have the ability to withstand acid and alkali, but for the refining of individual raw materials, the cleaning work of the crucible after use is very troublesome.
The main task of graphite crucible cleaning is to clean the chemical substances in the crucible, and then decide what to clean based on the residue in the graphite crucible. Generally speaking, the attachment on the graphite crucible is the residue after inorganic combustion. We can clean with hydrochloric acid, most of which are soluble, and some carbon containing residues cannot be dissolved with hydrochloric acid. At this point, nitric acid can be used for cleaning because it has strong oxidizing properties and can also be heated appropriately during cleaning. The graphite crucible needs to be kept clean and bright both inside and outside. After long-term combustion, the appearance of the crucible may be dull and dull, and over time, it may penetrate deep into the interior, leading to brittle fracture of the crucible. Therefore, it is necessary to clear the unclean things. If there are still five spots or the surface turns black, gently rub with 100 mesh fine sand without sharp edges to restore the surface luster.
