Figure 6 | Scientific Reports

Figure 6

From: Sustainable mining of natural vein graphite via acid-extraction from waste attached to rock pieces of vein banks

Figure 6

The SEM images of (a) graphite attached to rocks recovered from acid-treatment (AEG) before heat-treatment at (a-I) \(\times \) 500 (a-II) \(\times \) 1100 and (a-III) \(\times \) 5500 magnifications. The corresponding SEM images of AEG after heat treatment are given in (b). The corresponding SEM images of (c) ball-milled graphite powder (BMG) before and after heat treatment, respectively, at different magnifications are given in (c) and (d).

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