Abstract
A novel pyrometallurgical route was used to reduce the lead paste to obtain metallic lead with different additions of sodium carbonate at 850°C in a silicon carbide crucible. The process allows to obtain a high recovery of metallic lead in a single step and a slag constituted mainly by lead silicate. Products obtained were characterized by atomic absorption, X-ray powder diffraction and SEM-EDS techniques. A thermodynamic study was carried out with the software FactSage to determinate the compounds formation to the experimental conditions. High amounts of Na2CO3 and SiC promoted the formation of a lead sulfide compound which decreased the lead recovery.
Original language | English |
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Pages (from-to) | 316-324 |
Number of pages | 9 |
Journal | Russian Journal of Non-Ferrous Metals |
Volume | 57 |
Issue number | 4 |
DOIs | |
State | Published - 1 Jul 2016 |
Externally published | Yes |
Keywords
- batteries
- lead paste
- pyrometallurgical
- reduction
- thermodynamic