Table 1 Chemical composition of the kish graphite before purification
Chemical composition | Kish graphite | |
|---|---|---|
Carbon content (wt%) | 84.09 | |
Element (wt%) | Na | 1.07 |
K | 0.70 | |
Mg | 0.32 | |
Ca | 2.95 | |
Al | 1.90 | |
Si | 0.55 | |
Fe | 6.64 | |
Heavy metal (mg kg−1) | Ti | 492 |
Cr | BDL | |
Mn | 413 | |
Co | BDL | |
Ni | BDL | |
Cu | BDL | |
Zn | 260 | |
As | BDL | |
Se | BDL | |
Cd | BDL | |
Ba | BDL | |
Hg | BDL | |
Pb | BDL | |