Processing Dross from Hot-Dip Galvanizing by Chlorination Roasting
Dross from hot-dip galvanizing is an important source of pure zinc ingots and zinc oxide for use as mineral additives in animal and poultry feed. Thermodynamic calculations have shown the possibility of solving the issue of dross processing by roasting using CaCl<sub>2</sub> and NH<su...
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MDPI AG
2021
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oai:doaj.org-article:8cf7aff143c244008b9ad8f4819921f22021-11-25T19:01:49ZProcessing Dross from Hot-Dip Galvanizing by Chlorination Roasting10.3390/su1322125302071-1050https://doaj.org/article/8cf7aff143c244008b9ad8f4819921f22021-11-01T00:00:00Zhttps://www.mdpi.com/2071-1050/13/22/12530https://doaj.org/toc/2071-1050Dross from hot-dip galvanizing is an important source of pure zinc ingots and zinc oxide for use as mineral additives in animal and poultry feed. Thermodynamic calculations have shown the possibility of solving the issue of dross processing by roasting using CaCl<sub>2</sub> and NH<sub>4</sub>Cl. The influence of the consumption of chlorinating reagents, the roasting temperature on the degree of sublimation of Pb, Fe, Ni, Cu and Cd has been investigated. It has been shown that the best results are achieved when roasting the dross with the simultaneous use of CaCl<sub>2</sub> and NH<sub>4</sub>Cl in amounts of 6 and 15% by weight of the feed material. The optimal roasting parameters were established: T = 1000 °C, duration—60 min, air flow—0.1 L/min. Recovered pure zinc oxide composition (%) was: 0.05 Pb, 0.15 Fe, 0.06 Ni, 0.003 Cu and 0.001 Cd. The degree of sublimation of copper, nickel and iron chlorides was ~75%, with lead and cadmium at 90–98% of their initial amount in the dross.Nurlan Kalievich DosmukhamedovArkady KaplanErzhan Esenbaiuly ZholdasbayGulzada Myngyshkyzy KoishinaYeleussiz Bolatovich TazhievAidar ArgynYerzhan Itemenovich KuldeyevValery KaplanMDPI AGarticledrossroastingcalcium chlorideammonium chlorideimpuritiessublimationEnvironmental effects of industries and plantsTD194-195Renewable energy sourcesTJ807-830Environmental sciencesGE1-350ENSustainability, Vol 13, Iss 12530, p 12530 (2021) |
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DOAJ |
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EN |
| topic |
dross roasting calcium chloride ammonium chloride impurities sublimation Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 |
| spellingShingle |
dross roasting calcium chloride ammonium chloride impurities sublimation Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Nurlan Kalievich Dosmukhamedov Arkady Kaplan Erzhan Esenbaiuly Zholdasbay Gulzada Myngyshkyzy Koishina Yeleussiz Bolatovich Tazhiev Aidar Argyn Yerzhan Itemenovich Kuldeyev Valery Kaplan Processing Dross from Hot-Dip Galvanizing by Chlorination Roasting |
| description |
Dross from hot-dip galvanizing is an important source of pure zinc ingots and zinc oxide for use as mineral additives in animal and poultry feed. Thermodynamic calculations have shown the possibility of solving the issue of dross processing by roasting using CaCl<sub>2</sub> and NH<sub>4</sub>Cl. The influence of the consumption of chlorinating reagents, the roasting temperature on the degree of sublimation of Pb, Fe, Ni, Cu and Cd has been investigated. It has been shown that the best results are achieved when roasting the dross with the simultaneous use of CaCl<sub>2</sub> and NH<sub>4</sub>Cl in amounts of 6 and 15% by weight of the feed material. The optimal roasting parameters were established: T = 1000 °C, duration—60 min, air flow—0.1 L/min. Recovered pure zinc oxide composition (%) was: 0.05 Pb, 0.15 Fe, 0.06 Ni, 0.003 Cu and 0.001 Cd. The degree of sublimation of copper, nickel and iron chlorides was ~75%, with lead and cadmium at 90–98% of their initial amount in the dross. |
| format |
article |
| author |
Nurlan Kalievich Dosmukhamedov Arkady Kaplan Erzhan Esenbaiuly Zholdasbay Gulzada Myngyshkyzy Koishina Yeleussiz Bolatovich Tazhiev Aidar Argyn Yerzhan Itemenovich Kuldeyev Valery Kaplan |
| author_facet |
Nurlan Kalievich Dosmukhamedov Arkady Kaplan Erzhan Esenbaiuly Zholdasbay Gulzada Myngyshkyzy Koishina Yeleussiz Bolatovich Tazhiev Aidar Argyn Yerzhan Itemenovich Kuldeyev Valery Kaplan |
| author_sort |
Nurlan Kalievich Dosmukhamedov |
| title |
Processing Dross from Hot-Dip Galvanizing by Chlorination Roasting |
| title_short |
Processing Dross from Hot-Dip Galvanizing by Chlorination Roasting |
| title_full |
Processing Dross from Hot-Dip Galvanizing by Chlorination Roasting |
| title_fullStr |
Processing Dross from Hot-Dip Galvanizing by Chlorination Roasting |
| title_full_unstemmed |
Processing Dross from Hot-Dip Galvanizing by Chlorination Roasting |
| title_sort |
processing dross from hot-dip galvanizing by chlorination roasting |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/8cf7aff143c244008b9ad8f4819921f2 |
| work_keys_str_mv |
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