A Thermodynamic Study of the Reduction of a Limonitic Laterite Ore by Methane
The recovery of nickel from the oxidic nickeliferous laterite ores is receiving increasing attention due to the difficulty of recovering this metal from the sulphide ore deposits. One possible solution is to selectively reduce the nickel oxide in the ore, which could then be upgraded by, for example...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2018-10-01
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| Series: | High Temperature Materials and Processes |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/htmp-2017-0106 |
| _version_ | 1818733706722934784 |
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| author | Pickles C. A. Anthony W. |
| author_facet | Pickles C. A. Anthony W. |
| author_sort | Pickles C. A. |
| collection | DOAJ |
| description | The recovery of nickel from the oxidic nickeliferous laterite ores is receiving increasing attention due to the difficulty of recovering this metal from the sulphide ore deposits. One possible solution is to selectively reduce the nickel oxide in the ore, which could then be upgraded by, for example, magnetic concentration. In this article, a thermodynamic study was performed on the reduction of a limonitic laterite ore by methane. Methane was selected as the reducing agent as it has a lower environmental impact than carbon due to the reduced carbon dioxide emissions. The effects of temperatures and methane additions on the nickel recovery and nickel grade were investigated. High recoveries of over 95 % were predicted, but the grades were limited to about 2.5 % due to the formation of magnetite. The thermodynamic simulations for reduction by methane were in agreement with the experimental results in the literature for other reducing agents, reflecting the fact that the nickel oxide in the limonitic ore is relatively unstable. Thus, high recoveries could be achieved irrespective of the reducing agent involved. |
| first_indexed | 2024-12-17T23:53:44Z |
| format | Article |
| id | doaj.art-599a5bd745ac4133b983e7bac7bde357 |
| institution | Directory Open Access Journal |
| issn | 0334-6455 2191-0324 |
| language | English |
| last_indexed | 2024-12-17T23:53:44Z |
| publishDate | 2018-10-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | High Temperature Materials and Processes |
| spelling | doaj.art-599a5bd745ac4133b983e7bac7bde3572022-12-21T21:28:08ZengDe GruyterHigh Temperature Materials and Processes0334-64552191-03242018-10-01379-1090991910.1515/htmp-2017-0106A Thermodynamic Study of the Reduction of a Limonitic Laterite Ore by MethanePickles C. A.0Anthony W.1The Robert M. Buchan Department of Mining, Queen’s University, Kingston, OntarioK7L 3N6, CanadaThe Robert M. Buchan Department of Mining, Queen’s University, Kingston, OntarioK7L 3N6, CanadaThe recovery of nickel from the oxidic nickeliferous laterite ores is receiving increasing attention due to the difficulty of recovering this metal from the sulphide ore deposits. One possible solution is to selectively reduce the nickel oxide in the ore, which could then be upgraded by, for example, magnetic concentration. In this article, a thermodynamic study was performed on the reduction of a limonitic laterite ore by methane. Methane was selected as the reducing agent as it has a lower environmental impact than carbon due to the reduced carbon dioxide emissions. The effects of temperatures and methane additions on the nickel recovery and nickel grade were investigated. High recoveries of over 95 % were predicted, but the grades were limited to about 2.5 % due to the formation of magnetite. The thermodynamic simulations for reduction by methane were in agreement with the experimental results in the literature for other reducing agents, reflecting the fact that the nickel oxide in the limonitic ore is relatively unstable. Thus, high recoveries could be achieved irrespective of the reducing agent involved.https://doi.org/10.1515/htmp-2017-0106nickellimoniticlateritenickeliferousmethanereductionthermodynamicsmodelling |
| spellingShingle | Pickles C. A. Anthony W. A Thermodynamic Study of the Reduction of a Limonitic Laterite Ore by Methane High Temperature Materials and Processes nickel limonitic laterite nickeliferous methane reduction thermodynamics modelling |
| title | A Thermodynamic Study of the Reduction of a Limonitic Laterite Ore by Methane |
| title_full | A Thermodynamic Study of the Reduction of a Limonitic Laterite Ore by Methane |
| title_fullStr | A Thermodynamic Study of the Reduction of a Limonitic Laterite Ore by Methane |
| title_full_unstemmed | A Thermodynamic Study of the Reduction of a Limonitic Laterite Ore by Methane |
| title_short | A Thermodynamic Study of the Reduction of a Limonitic Laterite Ore by Methane |
| title_sort | thermodynamic study of the reduction of a limonitic laterite ore by methane |
| topic | nickel limonitic laterite nickeliferous methane reduction thermodynamics modelling |
| url | https://doi.org/10.1515/htmp-2017-0106 |
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