Mechanism of Nickel, Magnesium, and Iron Recovery from Olivine Bearing Ore during Leaching with Hydrochloric Acid Including a Carbonation Pre-Treatment
This work continues on from previous studies showing that mineral sequestration by carbonation of magnesium or calcium silicates under high pressure and high temperature can be successfully carried out by processing in an autoclave. The paper is focused on the influence of experimental parameters on...
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MDPI AG
2020-06-01
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| author | Carlos Matus Srecko Stopic Simon Etzold Dario Kremer Hermann Wotruba Christian Dertmann Rainer Telle Bernd Friedrich Pol Knops |
| author_facet | Carlos Matus Srecko Stopic Simon Etzold Dario Kremer Hermann Wotruba Christian Dertmann Rainer Telle Bernd Friedrich Pol Knops |
| author_sort | Carlos Matus |
| collection | DOAJ |
| description | This work continues on from previous studies showing that mineral sequestration by carbonation of magnesium or calcium silicates under high pressure and high temperature can be successfully carried out by processing in an autoclave. The paper is focused on the influence of experimental parameters on avoiding scale formation during pre-treatment in an autoclave and a subsequent leaching. Amorphous silica and magnesite, respectively, were the main reaction products in a carbonation of olivine under high pressure conditions in an autoclave. In addition, the examined peridotites may be accompanied by small to medium amounts of nickel or other metals, the recovery of which will be investigated in the present study: Extraction of metals such as nickel, iron, and magnesium from olivine bearing ore using hydrochloric acid under atmospheric pressure was studied between 50 and 90 °C in 1 h. The obtained results have shown maximal leaching efficiency of about 35% for Ni, Fe, and Mg under atmospheric pressure, in comparison to more than 60% obtained under the same conditions after a carbonation pre-treatment in an autoclave. Silica gel was formed during leaching without a pre-treatment of peridotite blocking the leaching process, which is not the case for the pre-treated material. The influence of temperature, reaction time, particle size and pre-treatment of peridotite in an autoclave during carbonation at 175 °C and 71.5 bar was studied. A new mechanism model for metal extraction from olivine-bearing ore by avoiding silica gel formation during leaching with hydrochloric acid including a carbonation pre-treatment is proposed. This study explains additionally a behavior of metals such as nickel, magnesium, and iron during a carbonation of olivine bearing ore and leaching of a carbonated solid product. |
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| language | English |
| last_indexed | 2024-03-10T19:05:39Z |
| publishDate | 2020-06-01 |
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| spelling | doaj.art-f3b52543e70f4b50893ff5fab42d2eb72023-11-20T04:10:57ZengMDPI AGMetals2075-47012020-06-0110681110.3390/met10060811Mechanism of Nickel, Magnesium, and Iron Recovery from Olivine Bearing Ore during Leaching with Hydrochloric Acid Including a Carbonation Pre-TreatmentCarlos Matus0Srecko Stopic1Simon Etzold2Dario Kremer3Hermann Wotruba4Christian Dertmann5Rainer Telle6Bernd Friedrich7Pol Knops8Refratechnik Cement GmbH, Sales Department, Rudolf-Winkel-Strasse 1, 37079 Gottingen, GermanyIME Process Metallurgy and Metal Recycling, RWTH Aachen University, Intzestrasse 3, 52056 Aachen, GermanyDepartment of Ceramics and Refractory Materials, GHI-Institute of Mineral Engineering, RWTH Aachen University, Mauerstrasse 5, 52064 Aachen, GermanyAMR Unit of Mineral Processing, RWTH Aachen University, Lochnerstrasse 4-20, 52064 Aachen, GermanyAMR Unit of Mineral Processing, RWTH Aachen University, Lochnerstrasse 4-20, 52064 Aachen, GermanyIME Process Metallurgy and Metal Recycling, RWTH Aachen University, Intzestrasse 3, 52056 Aachen, GermanyDepartment of Ceramics and Refractory Materials, GHI-Institute of Mineral Engineering, RWTH Aachen University, Mauerstrasse 5, 52064 Aachen, GermanyIME Process Metallurgy and Metal Recycling, RWTH Aachen University, Intzestrasse 3, 52056 Aachen, GermanyGreen Minerals, Rijksstraatweg 128, NL 7391 MG Twello, The NetherlandsThis work continues on from previous studies showing that mineral sequestration by carbonation of magnesium or calcium silicates under high pressure and high temperature can be successfully carried out by processing in an autoclave. The paper is focused on the influence of experimental parameters on avoiding scale formation during pre-treatment in an autoclave and a subsequent leaching. Amorphous silica and magnesite, respectively, were the main reaction products in a carbonation of olivine under high pressure conditions in an autoclave. In addition, the examined peridotites may be accompanied by small to medium amounts of nickel or other metals, the recovery of which will be investigated in the present study: Extraction of metals such as nickel, iron, and magnesium from olivine bearing ore using hydrochloric acid under atmospheric pressure was studied between 50 and 90 °C in 1 h. The obtained results have shown maximal leaching efficiency of about 35% for Ni, Fe, and Mg under atmospheric pressure, in comparison to more than 60% obtained under the same conditions after a carbonation pre-treatment in an autoclave. Silica gel was formed during leaching without a pre-treatment of peridotite blocking the leaching process, which is not the case for the pre-treated material. The influence of temperature, reaction time, particle size and pre-treatment of peridotite in an autoclave during carbonation at 175 °C and 71.5 bar was studied. A new mechanism model for metal extraction from olivine-bearing ore by avoiding silica gel formation during leaching with hydrochloric acid including a carbonation pre-treatment is proposed. This study explains additionally a behavior of metals such as nickel, magnesium, and iron during a carbonation of olivine bearing ore and leaching of a carbonated solid product.https://www.mdpi.com/2075-4701/10/6/811olivinecarbonationrecoverynickelmagnesiumiron |
| spellingShingle | Carlos Matus Srecko Stopic Simon Etzold Dario Kremer Hermann Wotruba Christian Dertmann Rainer Telle Bernd Friedrich Pol Knops Mechanism of Nickel, Magnesium, and Iron Recovery from Olivine Bearing Ore during Leaching with Hydrochloric Acid Including a Carbonation Pre-Treatment Metals olivine carbonation recovery nickel magnesium iron |
| title | Mechanism of Nickel, Magnesium, and Iron Recovery from Olivine Bearing Ore during Leaching with Hydrochloric Acid Including a Carbonation Pre-Treatment |
| title_full | Mechanism of Nickel, Magnesium, and Iron Recovery from Olivine Bearing Ore during Leaching with Hydrochloric Acid Including a Carbonation Pre-Treatment |
| title_fullStr | Mechanism of Nickel, Magnesium, and Iron Recovery from Olivine Bearing Ore during Leaching with Hydrochloric Acid Including a Carbonation Pre-Treatment |
| title_full_unstemmed | Mechanism of Nickel, Magnesium, and Iron Recovery from Olivine Bearing Ore during Leaching with Hydrochloric Acid Including a Carbonation Pre-Treatment |
| title_short | Mechanism of Nickel, Magnesium, and Iron Recovery from Olivine Bearing Ore during Leaching with Hydrochloric Acid Including a Carbonation Pre-Treatment |
| title_sort | mechanism of nickel magnesium and iron recovery from olivine bearing ore during leaching with hydrochloric acid including a carbonation pre treatment |
| topic | olivine carbonation recovery nickel magnesium iron |
| url | https://www.mdpi.com/2075-4701/10/6/811 |
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