Removal of arsenic from liquid blister copper during remelting in an induction vacuum furnace
Using a reduced pressure during the smelting and refining of alloys removes dissolved gasses, as well as impurities with a high vapor pressure. When smelting is carried out in vacuum induction furnaces, the intensification of the discussed processes is achieved by intensive mixing of the bath, as we...
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Technical Faculty, Bor
2021
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oai:doaj.org-article:df637b58b429458199b2d0a15d4172852021-11-22T11:04:01ZRemoval of arsenic from liquid blister copper during remelting in an induction vacuum furnace1450-53392217-717510.2298/JMMB210108033Lhttps://doaj.org/article/df637b58b429458199b2d0a15d4172852021-01-01T00:00:00Zhttp://www.doiserbia.nb.rs/img/doi/1450-5339/2021/1450-53392100033L.pdfhttps://doaj.org/toc/1450-5339https://doaj.org/toc/2217-7175Using a reduced pressure during the smelting and refining of alloys removes dissolved gasses, as well as impurities with a high vapor pressure. When smelting is carried out in vacuum induction furnaces, the intensification of the discussed processes is achieved by intensive mixing of the bath, as well as an enhanced mass exchange surface (liquid metal surface) due to the formation of a meniscus. This is due to the electromagnetic field applied to the liquid metal. This study reports the removal of arsenic from blister copper via refining in an induction vacuum furnace in the temperature range of 1423– 1523 K, at operating pressures from 8 to 1333 Pa. The overall mass transfer coefficient kAs determined from the experimental data ranged from 9.99·10-7 to 1.65·10-5 ms-1. Arsenic elimination was largely controlled by mass transfer in the gas phase. The kinetic analysis indicated that the arsenic evaporation rate was controlled by the combination of both liquid and gas-phase mass transfer only at a pressure of 8 Pa.Łabaj J.Blacha L.Smalcerz A.Chmiela B.Technical Faculty, Borarticleblister copperarsenic removalvacuum furnaceevaporationMining engineering. MetallurgyTN1-997ENJournal of Mining and Metallurgy. Section B: Metallurgy, Vol 57, Iss 3, Pp 371-378 (2021) |
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DOAJ |
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| topic |
blister copper arsenic removal vacuum furnace evaporation Mining engineering. Metallurgy TN1-997 |
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blister copper arsenic removal vacuum furnace evaporation Mining engineering. Metallurgy TN1-997 Łabaj J. Blacha L. Smalcerz A. Chmiela B. Removal of arsenic from liquid blister copper during remelting in an induction vacuum furnace |
| description |
Using a reduced pressure during the smelting and refining of alloys removes dissolved gasses, as well as impurities with a high vapor pressure. When smelting is carried out in vacuum induction furnaces, the intensification of the discussed processes is achieved by intensive mixing of the bath, as well as an enhanced mass exchange surface (liquid metal surface) due to the formation of a meniscus. This is due to the electromagnetic field applied to the liquid metal. This study reports the removal of arsenic from blister copper via refining in an induction vacuum furnace in the temperature range of 1423– 1523 K, at operating pressures from 8 to 1333 Pa. The overall mass transfer coefficient kAs determined from the experimental data ranged from 9.99·10-7 to 1.65·10-5 ms-1. Arsenic elimination was largely controlled by mass transfer in the gas phase. The kinetic analysis indicated that the arsenic evaporation rate was controlled by the combination of both liquid and gas-phase mass transfer only at a pressure of 8 Pa. |
| format |
article |
| author |
Łabaj J. Blacha L. Smalcerz A. Chmiela B. |
| author_facet |
Łabaj J. Blacha L. Smalcerz A. Chmiela B. |
| author_sort |
Łabaj J. |
| title |
Removal of arsenic from liquid blister copper during remelting in an induction vacuum furnace |
| title_short |
Removal of arsenic from liquid blister copper during remelting in an induction vacuum furnace |
| title_full |
Removal of arsenic from liquid blister copper during remelting in an induction vacuum furnace |
| title_fullStr |
Removal of arsenic from liquid blister copper during remelting in an induction vacuum furnace |
| title_full_unstemmed |
Removal of arsenic from liquid blister copper during remelting in an induction vacuum furnace |
| title_sort |
removal of arsenic from liquid blister copper during remelting in an induction vacuum furnace |
| publisher |
Technical Faculty, Bor |
| publishDate |
2021 |
| url |
https://doaj.org/article/df637b58b429458199b2d0a15d417285 |
| work_keys_str_mv |
AT łabajj removalofarsenicfromliquidblistercopperduringremeltinginaninductionvacuumfurnace AT blachal removalofarsenicfromliquidblistercopperduringremeltinginaninductionvacuumfurnace AT smalcerza removalofarsenicfromliquidblistercopperduringremeltinginaninductionvacuumfurnace AT chmielab removalofarsenicfromliquidblistercopperduringremeltinginaninductionvacuumfurnace |
| _version_ |
1718417766736723968 |