SEM study of a lead-iron slag flotation process
Abstract Companies producing lead-acid batteries are required by law to recycle their battery scrap. The recycling can be performed by a pyrometallurgical process resulting in slags containing mainly lead and iron. A study was carried out with the aim of recovering the lead contained in this slag. T...
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| Format: | Article |
| Language: | English |
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Fundação Gorceix
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| Series: | REM: International Engineering Journal |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2018000300471&lng=en&tlng=en |
| _version_ | 1811210337779712000 |
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| author | João Alberto de Souza Nunes Carlos Adolpho Magalhães Baltar Luiz Carlos Bertolino Bianca Maria da Silva |
| author_facet | João Alberto de Souza Nunes Carlos Adolpho Magalhães Baltar Luiz Carlos Bertolino Bianca Maria da Silva |
| author_sort | João Alberto de Souza Nunes |
| collection | DOAJ |
| description | Abstract Companies producing lead-acid batteries are required by law to recycle their battery scrap. The recycling can be performed by a pyrometallurgical process resulting in slags containing mainly lead and iron. A study was carried out with the aim of recovering the lead contained in this slag. This work has economic and environmental implications. Slag characterization was performed by X-ray diffraction, X-ray fluorescence and scanning electron microscopy (SEM). A laboratory-scale mechanical cell was used for flotation tests. The results showed that Pb-Fe selectivity is possible using ethyl xanthate as collector. The coke floats together decreasing concentrate grade. However, this is no problem because coke participates in the metallurgical process for the production of lead. A concentrate containing 22.9% Pb was obtained from a slag with 2.2% Pb. The process removes more than 99.6% of the iron contained. However, the recovery was only 19.0 %. Analyses from scanning electron microscopy detected the presence of lead inside the iron particles, limiting the possibility of lead recovery. |
| first_indexed | 2024-04-12T04:53:51Z |
| format | Article |
| id | doaj.art-ba1190222c094887b9341333802e5bcc |
| institution | Directory Open Access Journal |
| issn | 2448-167X |
| language | English |
| last_indexed | 2024-04-12T04:53:51Z |
| publisher | Fundação Gorceix |
| record_format | Article |
| series | REM: International Engineering Journal |
| spelling | doaj.art-ba1190222c094887b9341333802e5bcc2022-12-22T03:47:13ZengFundação GorceixREM: International Engineering Journal2448-167X71347147610.1590/0370-44672017710183S2448-167X2018000300471SEM study of a lead-iron slag flotation processJoão Alberto de Souza NunesCarlos Adolpho Magalhães BaltarLuiz Carlos BertolinoBianca Maria da SilvaAbstract Companies producing lead-acid batteries are required by law to recycle their battery scrap. The recycling can be performed by a pyrometallurgical process resulting in slags containing mainly lead and iron. A study was carried out with the aim of recovering the lead contained in this slag. This work has economic and environmental implications. Slag characterization was performed by X-ray diffraction, X-ray fluorescence and scanning electron microscopy (SEM). A laboratory-scale mechanical cell was used for flotation tests. The results showed that Pb-Fe selectivity is possible using ethyl xanthate as collector. The coke floats together decreasing concentrate grade. However, this is no problem because coke participates in the metallurgical process for the production of lead. A concentrate containing 22.9% Pb was obtained from a slag with 2.2% Pb. The process removes more than 99.6% of the iron contained. However, the recovery was only 19.0 %. Analyses from scanning electron microscopy detected the presence of lead inside the iron particles, limiting the possibility of lead recovery.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2018000300471&lng=en&tlng=enSEM applicationslag flotationlead flotationiron-lead separationlead recovery |
| spellingShingle | João Alberto de Souza Nunes Carlos Adolpho Magalhães Baltar Luiz Carlos Bertolino Bianca Maria da Silva SEM study of a lead-iron slag flotation process REM: International Engineering Journal SEM application slag flotation lead flotation iron-lead separation lead recovery |
| title | SEM study of a lead-iron slag flotation process |
| title_full | SEM study of a lead-iron slag flotation process |
| title_fullStr | SEM study of a lead-iron slag flotation process |
| title_full_unstemmed | SEM study of a lead-iron slag flotation process |
| title_short | SEM study of a lead-iron slag flotation process |
| title_sort | sem study of a lead iron slag flotation process |
| topic | SEM application slag flotation lead flotation iron-lead separation lead recovery |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2448-167X2018000300471&lng=en&tlng=en |
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