Recovery of elemental sulfur from its chlorides

E. Allain; I. Gaballah; N. Kanari; J. C. Mugica; R. Solozabal

Recovery of elemental sulfur from its chlorides

E. Allain^*
, I. Gaballah
, N. Kanari
, J. C. Mugica
, R. Solozabal

^*Corresponding author for this work

LEM, CNRS UMR 7569, ENSG, INPL

Research output: Contribution to conference › Paper › peer-review

1 Citation (Scopus)

Abstract

Extraction of basic metals from sulfides by conventional pyrometallurgical processing leads to the emission of SO₂. To avoid this inconvenient, low temperature selective chlorination of sulfide concentrates could be an alternative. However, such process generates hazardous chlorides S_xCl_y. A part of sulfur chlorides such as SCl₂ can be recycled as a chlorinating agent of metal sulfides. Hydrolysis of sulfur chlorides, using a solution containing Na₂S.9H₂O, led to the recovery of more than 90 pct of elemental sulfur. Reduction of S_xCl_y by hydrogen was investigated between 300 °C and 800 °C. About 70 and 90 pct of elemental sulfur were recovered from SCl₂ and S₂Cl₂, respectively. A flow sheet for the chlorination of metal sulfides and the treatment of sulfur chlorides was suggested.

Original language	English
Pages	187-196
Number of pages	10
Publication status	Published - 1998
Externally published	Yes
Event	Proceedings of the 1998 TMS Annual Meeting - San Antonio, TX, USA Duration: 15 Feb 1998 → 19 Feb 1998

Conference

Conference	Proceedings of the 1998 TMS Annual Meeting
City	San Antonio, TX, USA
Period	15/02/98 → 19/02/98

Cite this

@conference{cc0ab3b3f9bf4ac8aab99d709178303a,

title = "Recovery of elemental sulfur from its chlorides",

abstract = "Extraction of basic metals from sulfides by conventional pyrometallurgical processing leads to the emission of SO2. To avoid this inconvenient, low temperature selective chlorination of sulfide concentrates could be an alternative. However, such process generates hazardous chlorides SxCly. A part of sulfur chlorides such as SCl2 can be recycled as a chlorinating agent of metal sulfides. Hydrolysis of sulfur chlorides, using a solution containing Na2S.9H2O, led to the recovery of more than 90 pct of elemental sulfur. Reduction of SxCly by hydrogen was investigated between 300 °C and 800 °C. About 70 and 90 pct of elemental sulfur were recovered from SCl2 and S2Cl2, respectively. A flow sheet for the chlorination of metal sulfides and the treatment of sulfur chlorides was suggested.",

author = "E. Allain and I. Gaballah and N. Kanari and Mugica, \{J. C.\} and R. Solozabal",

year = "1998",

language = "English",

pages = "187--196",

note = "Proceedings of the 1998 TMS Annual Meeting ; Conference date: 15-02-1998 Through 19-02-1998",

}

TY - CONF

T1 - Recovery of elemental sulfur from its chlorides

AU - Allain, E.

AU - Gaballah, I.

AU - Kanari, N.

AU - Mugica, J. C.

AU - Solozabal, R.

PY - 1998

Y1 - 1998

N2 - Extraction of basic metals from sulfides by conventional pyrometallurgical processing leads to the emission of SO2. To avoid this inconvenient, low temperature selective chlorination of sulfide concentrates could be an alternative. However, such process generates hazardous chlorides SxCly. A part of sulfur chlorides such as SCl2 can be recycled as a chlorinating agent of metal sulfides. Hydrolysis of sulfur chlorides, using a solution containing Na2S.9H2O, led to the recovery of more than 90 pct of elemental sulfur. Reduction of SxCly by hydrogen was investigated between 300 °C and 800 °C. About 70 and 90 pct of elemental sulfur were recovered from SCl2 and S2Cl2, respectively. A flow sheet for the chlorination of metal sulfides and the treatment of sulfur chlorides was suggested.

AB - Extraction of basic metals from sulfides by conventional pyrometallurgical processing leads to the emission of SO2. To avoid this inconvenient, low temperature selective chlorination of sulfide concentrates could be an alternative. However, such process generates hazardous chlorides SxCly. A part of sulfur chlorides such as SCl2 can be recycled as a chlorinating agent of metal sulfides. Hydrolysis of sulfur chlorides, using a solution containing Na2S.9H2O, led to the recovery of more than 90 pct of elemental sulfur. Reduction of SxCly by hydrogen was investigated between 300 °C and 800 °C. About 70 and 90 pct of elemental sulfur were recovered from SCl2 and S2Cl2, respectively. A flow sheet for the chlorination of metal sulfides and the treatment of sulfur chlorides was suggested.

UR - https://www.scopus.com/pages/publications/0031656365

M3 - Paper

AN - SCOPUS:0031656365

SP - 187

EP - 196

T2 - Proceedings of the 1998 TMS Annual Meeting

Y2 - 15 February 1998 through 19 February 1998

ER -

Recovery of elemental sulfur from its chlorides

Abstract

Conference

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