Evaluation of Heterogenous Oxidation Reaction of Copper Concentrate/ Silica Sand Mixture by Dropping Method
Mixtures of copper concentrate and silica sand with various CuFeS2/FeS2 ratios and with 5 mg in weight were dropped from the top side of the silica tube filled with O2 gas and were reacted at 470℃. The Fe/SiO2 mass ratio of the mixtures was fixed at 1.1 as a typical composition of flash smelting. Th...
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| Format: | Article |
| Language: | English |
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The Mining and Materials Processing Institute of Japan
2021-06-01
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| Series: | Journal of MMIJ |
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| Online Access: | https://www.jstage.jst.go.jp/article/journalofmmij/137/6/137_63/_pdf/-char/en |
| _version_ | 1797745816796921856 |
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| author | Kyoya FUJII Hiromichi TAKEBE |
| author_facet | Kyoya FUJII Hiromichi TAKEBE |
| author_sort | Kyoya FUJII |
| collection | DOAJ |
| description | Mixtures of copper concentrate and silica sand with various CuFeS2/FeS2 ratios and with 5 mg in weight were dropped from the top side of the silica tube filled with O2 gas and were reacted at 470℃. The Fe/SiO2 mass ratio of the mixtures was fixed at 1.1 as a typical composition of flash smelting. The samples exhibited the white light emission expecting the arrival temperature of > 1500℃ due to the ignition reaction of sulfide minerals. Reaction products were evaluated by using scanning electron micrograph-energy dispersive X-ray spectrometry (SEM-EDS) analysis. In addition to un-reacted oxide and sulfide particles, matte-slag-mineral-magnetite coexisted particles were recognized in microstructure observation. The products supported heterogeneous reactions occurring in the copper concentrate burner. The effect of FeS2 concentration on copper concentration in matte phase and magnetite phase fraction in slag phase was discussed. |
| first_indexed | 2024-03-12T15:29:21Z |
| format | Article |
| id | doaj.art-381e38e960154abb8fa9cd461e26ee41 |
| institution | Directory Open Access Journal |
| issn | 1881-6118 1884-0450 |
| language | English |
| last_indexed | 2024-03-12T15:29:21Z |
| publishDate | 2021-06-01 |
| publisher | The Mining and Materials Processing Institute of Japan |
| record_format | Article |
| series | Journal of MMIJ |
| spelling | doaj.art-381e38e960154abb8fa9cd461e26ee412023-08-10T09:21:35ZengThe Mining and Materials Processing Institute of JapanJournal of MMIJ1881-61181884-04502021-06-011376636810.2473/journalofmmij.137.63journalofmmijEvaluation of Heterogenous Oxidation Reaction of Copper Concentrate/ Silica Sand Mixture by Dropping MethodKyoya FUJII0Hiromichi TAKEBE1Graduate Student, Ehime University, Present: Nippon Magnetic Dressing Co., Ltd.Professor, Graduate School of Science and Engineering, Ehime UniversityMixtures of copper concentrate and silica sand with various CuFeS2/FeS2 ratios and with 5 mg in weight were dropped from the top side of the silica tube filled with O2 gas and were reacted at 470℃. The Fe/SiO2 mass ratio of the mixtures was fixed at 1.1 as a typical composition of flash smelting. The samples exhibited the white light emission expecting the arrival temperature of > 1500℃ due to the ignition reaction of sulfide minerals. Reaction products were evaluated by using scanning electron micrograph-energy dispersive X-ray spectrometry (SEM-EDS) analysis. In addition to un-reacted oxide and sulfide particles, matte-slag-mineral-magnetite coexisted particles were recognized in microstructure observation. The products supported heterogeneous reactions occurring in the copper concentrate burner. The effect of FeS2 concentration on copper concentration in matte phase and magnetite phase fraction in slag phase was discussed.https://www.jstage.jst.go.jp/article/journalofmmij/137/6/137_63/_pdf/-char/encopper concentrateignitionmicrostructuremineral composition |
| spellingShingle | Kyoya FUJII Hiromichi TAKEBE Evaluation of Heterogenous Oxidation Reaction of Copper Concentrate/ Silica Sand Mixture by Dropping Method Journal of MMIJ copper concentrate ignition microstructure mineral composition |
| title | Evaluation of Heterogenous Oxidation Reaction of Copper Concentrate/ Silica Sand Mixture by Dropping Method |
| title_full | Evaluation of Heterogenous Oxidation Reaction of Copper Concentrate/ Silica Sand Mixture by Dropping Method |
| title_fullStr | Evaluation of Heterogenous Oxidation Reaction of Copper Concentrate/ Silica Sand Mixture by Dropping Method |
| title_full_unstemmed | Evaluation of Heterogenous Oxidation Reaction of Copper Concentrate/ Silica Sand Mixture by Dropping Method |
| title_short | Evaluation of Heterogenous Oxidation Reaction of Copper Concentrate/ Silica Sand Mixture by Dropping Method |
| title_sort | evaluation of heterogenous oxidation reaction of copper concentrate silica sand mixture by dropping method |
| topic | copper concentrate ignition microstructure mineral composition |
| url | https://www.jstage.jst.go.jp/article/journalofmmij/137/6/137_63/_pdf/-char/en |
| work_keys_str_mv | AT kyoyafujii evaluationofheterogenousoxidationreactionofcopperconcentratesilicasandmixturebydroppingmethod AT hiromichitakebe evaluationofheterogenousoxidationreactionofcopperconcentratesilicasandmixturebydroppingmethod |