Lead production from recycled paste of lead acid batteries with SiC-Na2CO3

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...

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Veröffentlicht in:	Russian journal of non-ferrous metals 2016-07, Vol.57 (4), p.316-324
Hauptverfasser:	Sánchez M., Angelica, Gutiérrez P., Victor Hugo, Cruz R., Alejandro, Sánchez A., Ricardo Gerardo
Format:	Artikel
Sprache:	eng
Schlagworte:	Chemistry and Materials Science Materials Science Metallic Materials Metallurgy of Nonferrous Metals
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	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 Na 2 CO 3 and SiC promoted the formation of a lead sulfide compound which decreased the lead recovery.
ISSN:	1067-8212 1934-970X
DOI:	10.3103/S1067821216040118