Sulfur injection to remove copper from recycled lead

G. Plascencia-Barrera, A. Romero-Serrano, R. D. Morales, S. González-López, F. Chavez-Alcala, D. Silva-Galvan

Research output: Contribution to conferencePaperpeer-review


This work is focussed on lead decopperising by two techniques: conventional top addition of sulfur and injection of sulfur powder. It is found that the first method proceeds under equilibrium conditions and the second one depends on kinetic considerations. Experiments were carried out using 15 kg lead baths at two temperatures, 340°C and 380°C. The carrying gas used for the injection trials was nitrogen at flow rates of 6.3 and 18.6 L min-1. The results show that decopperising process is more efficient at temperatures close to the melting point of lead for the sulfur top addition process, whereas high temperatures produce better copper removal for the injection of sulfur powder. Besides, the sulfur injection with the higher nitrogen flow rate (18.6 L min-1) produced higher decopperising rates. Thermodynamic and kinetic models are used to simulate this lead refining process.

Original languageEnglish
Number of pages14
StatePublished - 2000
Externally publishedYes
Event4th International Symposium on Recycling of Metals and Engineered Materials - , United States
Duration: 22 Oct 200025 Oct 2000


Conference4th International Symposium on Recycling of Metals and Engineered Materials
Country/TerritoryUnited States


Dive into the research topics of 'Sulfur injection to remove copper from recycled lead'. Together they form a unique fingerprint.

Cite this