Insight on the reduction of copper content in slags produced from the Ausmelt Converting Process
The reduction of copper content in converting slag using process control is significant to copper smelter. In this study, the slags produced from the Ausmelt Converting Process for copper matte was analyzed using X-ray diffraction and chemical analysis. Thermodynamic calculation and effects of vario...
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University of Belgrade, Technical Faculty, Bor
2021-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2021/1450-53392100013Y.pdf |
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| author | Yuan H.-B. Cai B. Song X.-C. Tang D.-Z. Yang B. |
| author_facet | Yuan H.-B. Cai B. Song X.-C. Tang D.-Z. Yang B. |
| author_sort | Yuan H.-B. |
| collection | DOAJ |
| description | The reduction of copper content in converting slag using process control is significant to copper smelter. In this study, the slags produced from the Ausmelt Converting Process for copper matte was analyzed using X-ray diffraction and chemical analysis. Thermodynamic calculation and effects of various conditions including the lance submerging depth in molten bath, the molten bath temperature, the addition of copper matte, and airflow rate were carried out to lower the content in the slag. Thermodynamic analysis indicated that the decrease of copper content was achieved by reducing Fe3O4, CuFe2O4, and Cu2O in the slag, decreasing the magnetism of slag and lowering the viscosity of slag, which was feasible at the operating temperature of the molten bath. Experiments showed that the optimal combination of operating conditions were found to be the addition of copper matte between 5,000 – 7,000 kg/h, a lance airflow rate of 13,000-14,000 Nm3/h, and a lance submergence depth into the molten bath of 700-900 mm, in which the copper content in the slag was effectively reduced from 22.74 wt. % to 7.70 wt. %. This study provides a theoretical support and technical guidance for promoting the utilization of slags from the Ausmelt Converting Process. |
| format | Article |
| id | doaj-art-5bffcf8926d24914a11c5569b9b1a0cd |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-5bffcf8926d24914a11c5569b9b1a0cd2025-02-02T16:59:47ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752021-01-0157215516210.2298/JMMB201016013Y1450-53392100013YInsight on the reduction of copper content in slags produced from the Ausmelt Converting ProcessYuan H.-B.0Cai B.1Song X.-C.2Tang D.-Z.3Yang B.4Kunming University of Science and Technology, Kunming, China + Copper Branch of Yunnan Tin Company Limited, Yunnan Gejiu, ChinaKunming University of Science and Technology, Kunming, China + Copper Branch of Yunnan Tin Company Limited, Yunnan Gejiu, ChinaCopper Branch of Yunnan Tin Company Limited, Yunnan Gejiu, ChinaCopper Branch of Yunnan Tin Company Limited, Yunnan Gejiu, ChinaKunming University of Science and Technology, Kunming, ChinaThe reduction of copper content in converting slag using process control is significant to copper smelter. In this study, the slags produced from the Ausmelt Converting Process for copper matte was analyzed using X-ray diffraction and chemical analysis. Thermodynamic calculation and effects of various conditions including the lance submerging depth in molten bath, the molten bath temperature, the addition of copper matte, and airflow rate were carried out to lower the content in the slag. Thermodynamic analysis indicated that the decrease of copper content was achieved by reducing Fe3O4, CuFe2O4, and Cu2O in the slag, decreasing the magnetism of slag and lowering the viscosity of slag, which was feasible at the operating temperature of the molten bath. Experiments showed that the optimal combination of operating conditions were found to be the addition of copper matte between 5,000 – 7,000 kg/h, a lance airflow rate of 13,000-14,000 Nm3/h, and a lance submergence depth into the molten bath of 700-900 mm, in which the copper content in the slag was effectively reduced from 22.74 wt. % to 7.70 wt. %. This study provides a theoretical support and technical guidance for promoting the utilization of slags from the Ausmelt Converting Process.http://www.doiserbia.nb.rs/img/doi/1450-5339/2021/1450-53392100013Y.pdftop-blown convertingcopper content in slagcopper matteblister copperausmelt furnace |
| spellingShingle | Yuan H.-B. Cai B. Song X.-C. Tang D.-Z. Yang B. Insight on the reduction of copper content in slags produced from the Ausmelt Converting Process Journal of Mining and Metallurgy. Section B: Metallurgy top-blown converting copper content in slag copper matte blister copper ausmelt furnace |
| title | Insight on the reduction of copper content in slags produced from the Ausmelt Converting Process |
| title_full | Insight on the reduction of copper content in slags produced from the Ausmelt Converting Process |
| title_fullStr | Insight on the reduction of copper content in slags produced from the Ausmelt Converting Process |
| title_full_unstemmed | Insight on the reduction of copper content in slags produced from the Ausmelt Converting Process |
| title_short | Insight on the reduction of copper content in slags produced from the Ausmelt Converting Process |
| title_sort | insight on the reduction of copper content in slags produced from the ausmelt converting process |
| topic | top-blown converting copper content in slag copper matte blister copper ausmelt furnace |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2021/1450-53392100013Y.pdf |
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