ANODIC ELECTROLYTIC DISSOLUTION OF COPPER SULPHIDES PRECIPITATED FROM AMMONIACAL LEACHING MEDIA

Anodic dissolution of synthetic chalcocite (previously obtained by copper precipitation with S and S0(2) in ammonia media) in two different electrolytic cells is described. One cell has a circular graphite anode placed horizontally, surrounded by a stainless steel cylinder as cathode, and the other...

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Autores principales:	MORALES,ALEJANDRO, HEVIA,JOSÉ FCO, SANTIS,DOMINGO, CIFUENTES,GERARDO
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2009
Materias:	Copper anodic dissolution copper sulphide anodic graphite
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072009000200004
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spelling	oai:scielo:S0717-970720090002000042009-10-07ANODIC ELECTROLYTIC DISSOLUTION OF COPPER SULPHIDES PRECIPITATED FROM AMMONIACAL LEACHING MEDIAMORALES,ALEJANDROHEVIA,JOSÉ FCOSANTIS,DOMINGOCIFUENTES,GERARDO Copper anodic dissolution copper sulphide anodic graphite Anodic dissolution of synthetic chalcocite (previously obtained by copper precipitation with S and S0(2) in ammonia media) in two different electrolytic cells is described. One cell has a circular graphite anode placed horizontally, surrounded by a stainless steel cylinder as cathode, and the other has a rectangular basket-shaped graphite anode, with a rectangular stainless steel cathode placed in front of it. The electrolysis was performed at 0.2 A and 50 °C, the electrolyte contained 20 to 40 g L-1 of Cuand 100 to 160 g L-1 of H2S0(4), and the initial reactions took place at low potential (0.4-0.6 V) until the transformation of Cu2S intoCuS, detected by the considerable increase in cell potential. Anodic and cathodic efficiencies greater than 100% and 95%, respectively, were obtained. The hight anodic efficiencie is duetofaradic and chemical dissolution too. It is also shown that the (CuS) produced as waste material can replace elemental sulphur as copper precipitating agent in ammoniacal media.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.54 n.2 20092009-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072009000200004en10.4067/S0717-97072009000200004
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Copper anodic dissolution copper sulphide anodic graphite
spellingShingle	Copper anodic dissolution copper sulphide anodic graphite MORALES,ALEJANDRO HEVIA,JOSÉ FCO SANTIS,DOMINGO CIFUENTES,GERARDO ANODIC ELECTROLYTIC DISSOLUTION OF COPPER SULPHIDES PRECIPITATED FROM AMMONIACAL LEACHING MEDIA
description	Anodic dissolution of synthetic chalcocite (previously obtained by copper precipitation with S and S0(2) in ammonia media) in two different electrolytic cells is described. One cell has a circular graphite anode placed horizontally, surrounded by a stainless steel cylinder as cathode, and the other has a rectangular basket-shaped graphite anode, with a rectangular stainless steel cathode placed in front of it. The electrolysis was performed at 0.2 A and 50 °C, the electrolyte contained 20 to 40 g L-1 of Cuand 100 to 160 g L-1 of H2S0(4), and the initial reactions took place at low potential (0.4-0.6 V) until the transformation of Cu2S intoCuS, detected by the considerable increase in cell potential. Anodic and cathodic efficiencies greater than 100% and 95%, respectively, were obtained. The hight anodic efficiencie is duetofaradic and chemical dissolution too. It is also shown that the (CuS) produced as waste material can replace elemental sulphur as copper precipitating agent in ammoniacal media.
author	MORALES,ALEJANDRO HEVIA,JOSÉ FCO SANTIS,DOMINGO CIFUENTES,GERARDO
author_facet	MORALES,ALEJANDRO HEVIA,JOSÉ FCO SANTIS,DOMINGO CIFUENTES,GERARDO
author_sort	MORALES,ALEJANDRO
title	ANODIC ELECTROLYTIC DISSOLUTION OF COPPER SULPHIDES PRECIPITATED FROM AMMONIACAL LEACHING MEDIA
title_short	ANODIC ELECTROLYTIC DISSOLUTION OF COPPER SULPHIDES PRECIPITATED FROM AMMONIACAL LEACHING MEDIA
title_full	ANODIC ELECTROLYTIC DISSOLUTION OF COPPER SULPHIDES PRECIPITATED FROM AMMONIACAL LEACHING MEDIA
title_fullStr	ANODIC ELECTROLYTIC DISSOLUTION OF COPPER SULPHIDES PRECIPITATED FROM AMMONIACAL LEACHING MEDIA
title_full_unstemmed	ANODIC ELECTROLYTIC DISSOLUTION OF COPPER SULPHIDES PRECIPITATED FROM AMMONIACAL LEACHING MEDIA
title_sort	anodic electrolytic dissolution of copper sulphides precipitated from ammoniacal leaching media
publisher	Sociedad Chilena de Química
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072009000200004
work_keys_str_mv	AT moralesalejandro anodicelectrolyticdissolutionofcoppersulphidesprecipitatedfromammoniacalleachingmedia AT heviajosefco anodicelectrolyticdissolutionofcoppersulphidesprecipitatedfromammoniacalleachingmedia AT santisdomingo anodicelectrolyticdissolutionofcoppersulphidesprecipitatedfromammoniacalleachingmedia AT cifuentesgerardo anodicelectrolyticdissolutionofcoppersulphidesprecipitatedfromammoniacalleachingmedia
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ANODIC ELECTROLYTIC DISSOLUTION OF COPPER SULPHIDES PRECIPITATED FROM AMMONIACAL LEACHING MEDIA

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