Contact angle of water on iron ore fines: Measurement and analysis
The relative contact angle (θRCA) for seven iron ore fines was measured by using Washburn Osmotic Pressure method under laboratory conditions. By choosing cyclohexane as the reference that can perfectly wet iron ore particles, the relative contact angles were measured and varied from 57° to...
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| Format: | Article |
| Language: | English |
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University of Belgrade, Technical Faculty, Bor
2015-01-01
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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/1450-5339/2015/1450-53391500010H.pdf |
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| author | Huang X.B. X.W. Song J.J. Bai C.G. Zhang R.D. Zhou M.J. |
| author_facet | Huang X.B. X.W. Song J.J. Bai C.G. Zhang R.D. Zhou M.J. |
| author_sort | Huang X.B. |
| collection | DOAJ |
| description | The relative contact angle (θRCA) for seven iron ore fines was measured by
using Washburn Osmotic Pressure method under laboratory conditions. By
choosing cyclohexane as the reference that can perfectly wet iron ore
particles, the relative contact angles were measured and varied from 57° to
73°. With the volume % of goethite (φG) as the variable, a new model for
relative contact angle was developed. The expected relative contact angle for
pure goethite is about 56°, while that for goethite free samples is about
77°. Physical properties, such as surface morphology (SMI) and pore volume
(Vpore) can influence the relative contact angle. The φG can be expressed as
a function of SMI and VPore. Thus, we inferred that the relative contact
angle is a function of φG for the iron ores used. The measured relative
contact angles were found to be in good agreement (Radj 2 >0.97) with the
calculated ones based on the research from Iveson, et al. (2004). Comparing
with the model developed by Iveson et al.(2004), the new model for contact
angle proposed in this paper is similar, but more detailed with two
meaningful physical parameters. The modification of physicochemical
properties on iron ores would be another topic in the further study on
granulation. |
| format | Article |
| id | doaj-art-4c45b802f06c4339aeefc4d4e61acfa7 |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-4c45b802f06c4339aeefc4d4e61acfa72025-02-02T00:01:35ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752015-01-01511334010.2298/JMMB140903010H1450-53391500010HContact angle of water on iron ore fines: Measurement and analysisHuang X.B.0X.W.1Song J.J.2Bai C.G.3Zhang R.D.4Zhou M.J.5Chongqing University, College of Materials Science and Engineering, Chongqing, ChinaChongqing University, College of Materials Science and Engineering, Chongqing, ChinaCenter of Material for Chongqing Metrology Institute of Quality Inspection, Chongqing, ChinaChongqing University, College of Materials Science and Engineering, Chongqing, ChinaChongqing University, College of Materials Science and Engineering, Chongqing, ChinaBaoshan Iron & Steel Co., Ltd., Ironmaking plant, Shanghai, ChinaThe relative contact angle (θRCA) for seven iron ore fines was measured by using Washburn Osmotic Pressure method under laboratory conditions. By choosing cyclohexane as the reference that can perfectly wet iron ore particles, the relative contact angles were measured and varied from 57° to 73°. With the volume % of goethite (φG) as the variable, a new model for relative contact angle was developed. The expected relative contact angle for pure goethite is about 56°, while that for goethite free samples is about 77°. Physical properties, such as surface morphology (SMI) and pore volume (Vpore) can influence the relative contact angle. The φG can be expressed as a function of SMI and VPore. Thus, we inferred that the relative contact angle is a function of φG for the iron ores used. The measured relative contact angles were found to be in good agreement (Radj 2 >0.97) with the calculated ones based on the research from Iveson, et al. (2004). Comparing with the model developed by Iveson et al.(2004), the new model for contact angle proposed in this paper is similar, but more detailed with two meaningful physical parameters. The modification of physicochemical properties on iron ores would be another topic in the further study on granulation.http://www.doiserbia.nb.rs/img/doi/1450-5339/2015/1450-53391500010H.pdfwettabilityWashburn osmotic pressure methodrelative contact anglephysicochemical properties |
| spellingShingle | Huang X.B. X.W. Song J.J. Bai C.G. Zhang R.D. Zhou M.J. Contact angle of water on iron ore fines: Measurement and analysis Journal of Mining and Metallurgy. Section B: Metallurgy wettability Washburn osmotic pressure method relative contact angle physicochemical properties |
| title | Contact angle of water on iron ore fines: Measurement and analysis |
| title_full | Contact angle of water on iron ore fines: Measurement and analysis |
| title_fullStr | Contact angle of water on iron ore fines: Measurement and analysis |
| title_full_unstemmed | Contact angle of water on iron ore fines: Measurement and analysis |
| title_short | Contact angle of water on iron ore fines: Measurement and analysis |
| title_sort | contact angle of water on iron ore fines measurement and analysis |
| topic | wettability Washburn osmotic pressure method relative contact angle physicochemical properties |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2015/1450-53391500010H.pdf |
| work_keys_str_mv | AT huangxb contactangleofwateronironorefinesmeasurementandanalysis AT xw contactangleofwateronironorefinesmeasurementandanalysis AT songjj contactangleofwateronironorefinesmeasurementandanalysis AT baicg contactangleofwateronironorefinesmeasurementandanalysis AT zhangrd contactangleofwateronironorefinesmeasurementandanalysis AT zhoumj contactangleofwateronironorefinesmeasurementandanalysis |