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 | Spanish (Mexico) |
|---|---|
| Article number | 1 |
| Pages (from-to) | 316-324 |
| Journal | Russian Journal of Non-Ferrous Metals |
| Volume | 57 |
| Issue number | 4 |
| DOIs | |
| State | Published - 2016 |