Analysis of the sulfur decoppering from molten lead by powder injection

Victor Hugo Gutierrez P, Alejandro Cruz R, Jose Antonio Romero S, Jorge Enrique Rivera S

Research output: Contribution to journalArticle

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Abstract

© 2015, Allerton Press, Inc. A copper removal process was carried out in a Pb-Cu alloy through sulfur powder injection of three different sizes (79.23, 202.83 and 597.15 μm) by a top submerged lance with nitrogen as carrying gas. The higher copper removal as CuS<inf>2</inf> was obtained for the sulfur powder size of 79.23 μm, while the lowest copper removal efficiency was attained for the coarse particle size of 597.15 μm. The copper removal was explained according with a relationship between the residence and melting time. The sizes of 202.83 and 597.15 μm presented a longer residence time that promotes the sulfur coalescence and it is lost by burning. An injection-cooling trial was developed and a decoppering fraction of 0.29 with a sulfur efficiency of 72.98% in average was obtained for the fine size. The injection-cooling process represents an attractive route for secondary lead producers in the copper removal from molten lead.
Original languageAmerican English
Pages (from-to)251-260
Number of pages224
JournalRussian Journal of Non-Ferrous Metals
DOIs
StatePublished - 21 May 2015

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Sulfur
Powders
Molten materials
Copper
Lead
Cooling
Coalescence
Melting
Nitrogen
Gases
Particle size

Cite this

Gutierrez P, Victor Hugo ; Cruz R, Alejandro ; Romero S, Jose Antonio ; Rivera S, Jorge Enrique. / Analysis of the sulfur decoppering from molten lead by powder injection. In: Russian Journal of Non-Ferrous Metals. 2015 ; pp. 251-260.
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Analysis of the sulfur decoppering from molten lead by powder injection. / Gutierrez P, Victor Hugo; Cruz R, Alejandro; Romero S, Jose Antonio; Rivera S, Jorge Enrique.

In: Russian Journal of Non-Ferrous Metals, 21.05.2015, p. 251-260.

Research output: Contribution to journalArticle

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