Details

Autor(en) / Beteiligte

• Zhang, Yonglu
• Wang, Chengyan
• Jie, Xiaowu
• Gao, Wei
• Ruan, Shufeng

Titel

Study on Pre-removal Antimony from Antimony–Gold Concentrate Using Slurry Electrolysis

Ist Teil von

• Rare Metal Technology 2022, p.179-188

Ort / Verlag

Cham: Springer International Publishing

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• AntimonyAntimony has a negative effect on the goldGold extraction from antimony–gold concentrate, and it is necessary to remove antimony in advance. For a high calcium low antimony–goldGold concentrate (Ca–Sb–Au ore), this study proposed to pre-remove antimony using slurry electrolysisSlurry electrolysis in HCl–CaCl2 system. The results indicated that the optimal conditions were CaCl2 300–350 g/L, electric quantity 1.2 times, HCl 30 g/L, time 3.5 h, and temperature 60 ℃. The leaching efficiency of antimony and calcium was higher than 96% and 98%, respectively, and goldGold was less than 1%. The dissolved antimonyAntimony can be directly electrodeposited on the cathode to produce metallic antimonyAntimony, the sulfur present in stibniteStibnite was transformed into elemental sulfur remaining in the residue, and the leaching residue can be used as raw material for further goldGold extraction. Thus, the separation of antimonyAntimonyand goldGold was achieved.