Extraction of valuable metals from lepidolite
The lepidolite in this study was provided by Jiangxi Province (China). The lepidolite was first crushed in a jaw crusher, then ground in a ball mill and screened to < 150 μm. X-ray powder diffraction pattern (XRD) showed that the raw material was primarily lepidolite, albite (NaAlSi 3 O 8) and quartz (SiO 2).