Kinetics of malachite leaching in alkaline glycine solutions
Aqueous alkaline glycine solutions present technical advantages over acidic solutions for leaching oxidised copper minerals hosted in carbonate mineral matrix phases. In this study, the leaching and kinetics of malachite in alkaline glycine solutions have been studied. The influence of process varia...
| Main Authors: | , , |
|---|---|
| Format: | Journal Article |
| Published: |
2018
|
| Online Access: | http://hdl.handle.net/20.500.11937/73096 |
| _version_ | 1848762922443997184 |
|---|---|
| author | Tanda, B. Oraby, Elsayed Eksteen, Jacques |
| author_facet | Tanda, B. Oraby, Elsayed Eksteen, Jacques |
| author_sort | Tanda, B. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Aqueous alkaline glycine solutions present technical advantages over acidic solutions for leaching oxidised copper minerals hosted in carbonate mineral matrix phases. In this study, the leaching and kinetics of malachite in alkaline glycine solutions have been studied. The influence of process variables such as glycine concentration, temperature, particle size and stirring speed on leaching kinetics was evaluated. The results show that temperature has a significant effect on copper dissolution rates. A temperature increase from 25°C to 50°C resulted in a copper extraction of 32.3–83.6% respectively over 5 min. Increasing glycine concentration and reducing particle size led to an increase in copper extraction rates while no significant influence was observed with stirring speeds above 350 rpm. |
| first_indexed | 2025-11-14T10:55:16Z |
| format | Journal Article |
| id | curtin-20.500.11937-73096 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:55:16Z |
| publishDate | 2018 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-730962019-02-11T02:49:11Z Kinetics of malachite leaching in alkaline glycine solutions Tanda, B. Oraby, Elsayed Eksteen, Jacques Aqueous alkaline glycine solutions present technical advantages over acidic solutions for leaching oxidised copper minerals hosted in carbonate mineral matrix phases. In this study, the leaching and kinetics of malachite in alkaline glycine solutions have been studied. The influence of process variables such as glycine concentration, temperature, particle size and stirring speed on leaching kinetics was evaluated. The results show that temperature has a significant effect on copper dissolution rates. A temperature increase from 25°C to 50°C resulted in a copper extraction of 32.3–83.6% respectively over 5 min. Increasing glycine concentration and reducing particle size led to an increase in copper extraction rates while no significant influence was observed with stirring speeds above 350 rpm. 2018 Journal Article http://hdl.handle.net/20.500.11937/73096 10.1080/25726641.2018.1505211 restricted |
| spellingShingle | Tanda, B. Oraby, Elsayed Eksteen, Jacques Kinetics of malachite leaching in alkaline glycine solutions |
| title | Kinetics of malachite leaching in alkaline glycine solutions |
| title_full | Kinetics of malachite leaching in alkaline glycine solutions |
| title_fullStr | Kinetics of malachite leaching in alkaline glycine solutions |
| title_full_unstemmed | Kinetics of malachite leaching in alkaline glycine solutions |
| title_short | Kinetics of malachite leaching in alkaline glycine solutions |
| title_sort | kinetics of malachite leaching in alkaline glycine solutions |
| url | http://hdl.handle.net/20.500.11937/73096 |