MEROS Dust Quality of Different Plants and Its Potential Further Uses
Sintering is a process of agglomeration of fine particles into porous sinters for blast furnaces. During the sintering process, high volumes of sinter plant gas containing high loads of dust, SO<sub>2</sub> and NO<sub>X</sub> and toxic pollutants, such as heavy metals (e.g.,...
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| Format: | Article |
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MDPI AG
2021-05-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/11/5/840 |
| _version_ | 1797533341949362176 |
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| author | Claudia Hledik Martin Goetz Franz Ottner Maria Fürhacker |
| author_facet | Claudia Hledik Martin Goetz Franz Ottner Maria Fürhacker |
| author_sort | Claudia Hledik |
| collection | DOAJ |
| description | Sintering is a process of agglomeration of fine particles into porous sinters for blast furnaces. During the sintering process, high volumes of sinter plant gas containing high loads of dust, SO<sub>2</sub> and NO<sub>X</sub> and toxic pollutants, such as heavy metals (e.g., Hg, Pb, Cr and Cd) and PCDD/F, are emitted. The objective of this study was to characterize dusts of different plants as the basis for suggestions of reutilization and treatment options. Dusts, eluates and residues were produced and DOC, T-N, ions and heavy metals were analyzed. The results show that dusts from different plants are very similar in terms of DOC, T-N, Mg, Ca and many heavy metals and only differ in criteria such as suspended solids and ions such as K, Na, Cl and SO<sub>4</sub>. Based on the high levels of alkalis and low levels of iron, direct recycling into the sinter or furnace process is not recommended. The dissolution of the soluble substances in water reduces the MEROS dust by 90% of the weight and extracts the alkalis. The remaining wastewater needs to be treated to reduce DOC, T-N and some heavy metals. The solid residues can be recycled into the sinter to reduce potential PCDD/F, which are attached to the activated carbon. |
| first_indexed | 2024-03-10T11:14:08Z |
| format | Article |
| id | doaj.art-58c59cb096b746809eb592c6a91c20eb |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T11:14:08Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-58c59cb096b746809eb592c6a91c20eb2023-11-21T20:34:27ZengMDPI AGMetals2075-47012021-05-0111584010.3390/met11050840MEROS Dust Quality of Different Plants and Its Potential Further UsesClaudia Hledik0Martin Goetz1Franz Ottner2Maria Fürhacker3Department of Water, Atmosphere and Environment, University of Natural Resources and Life Sciences Vienna, Muthgasse 18, 1190 Wien, AustriaPrimetals Technologies Austria GmbH, 4031 Linz, AustriaDepartment of Water, Atmosphere and Environment, University of Natural Resources and Life Sciences Vienna, Muthgasse 18, 1190 Wien, AustriaDepartment of Water, Atmosphere and Environment, University of Natural Resources and Life Sciences Vienna, Muthgasse 18, 1190 Wien, AustriaSintering is a process of agglomeration of fine particles into porous sinters for blast furnaces. During the sintering process, high volumes of sinter plant gas containing high loads of dust, SO<sub>2</sub> and NO<sub>X</sub> and toxic pollutants, such as heavy metals (e.g., Hg, Pb, Cr and Cd) and PCDD/F, are emitted. The objective of this study was to characterize dusts of different plants as the basis for suggestions of reutilization and treatment options. Dusts, eluates and residues were produced and DOC, T-N, ions and heavy metals were analyzed. The results show that dusts from different plants are very similar in terms of DOC, T-N, Mg, Ca and many heavy metals and only differ in criteria such as suspended solids and ions such as K, Na, Cl and SO<sub>4</sub>. Based on the high levels of alkalis and low levels of iron, direct recycling into the sinter or furnace process is not recommended. The dissolution of the soluble substances in water reduces the MEROS dust by 90% of the weight and extracts the alkalis. The remaining wastewater needs to be treated to reduce DOC, T-N and some heavy metals. The solid residues can be recycled into the sinter to reduce potential PCDD/F, which are attached to the activated carbon.https://www.mdpi.com/2075-4701/11/5/840sinter plantMEROS dustreutilization |
| spellingShingle | Claudia Hledik Martin Goetz Franz Ottner Maria Fürhacker MEROS Dust Quality of Different Plants and Its Potential Further Uses Metals sinter plant MEROS dust reutilization |
| title | MEROS Dust Quality of Different Plants and Its Potential Further Uses |
| title_full | MEROS Dust Quality of Different Plants and Its Potential Further Uses |
| title_fullStr | MEROS Dust Quality of Different Plants and Its Potential Further Uses |
| title_full_unstemmed | MEROS Dust Quality of Different Plants and Its Potential Further Uses |
| title_short | MEROS Dust Quality of Different Plants and Its Potential Further Uses |
| title_sort | meros dust quality of different plants and its potential further uses |
| topic | sinter plant MEROS dust reutilization |
| url | https://www.mdpi.com/2075-4701/11/5/840 |
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