Dissolution Kinetics of Carbonates in Low-Grade Microgranular Phosphate Ore Using Organic Acids as Leaching Agents
The present study investigates the process of selective leaching of low-grade phosphate ore of the Karatau basin using organic acids such as formic and citric acids. Chemical and instrumental analyses of the investigated phosphate ore were carried out, including X-ray diffraction (XRD), scanning ele...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-10-01
|
| Series: | Mining |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2673-6489/4/4/43 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1846103541021671424 |
|---|---|
| author | Yerkebulan Raiymbekov Perizat Abdurazova Ulzhalgas Nazarbek |
| author_facet | Yerkebulan Raiymbekov Perizat Abdurazova Ulzhalgas Nazarbek |
| author_sort | Yerkebulan Raiymbekov |
| collection | DOAJ |
| description | The present study investigates the process of selective leaching of low-grade phosphate ore of the Karatau basin using organic acids such as formic and citric acids. Chemical and instrumental analyses of the investigated phosphate ore were carried out, including X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX), and Fourier-transform infrared spectroscopy (FTIR). Based on experimental data, reaction rate constants were calculated, and the obtained activation energies for each of the reagents were used. The reaction rate constants indicate that formic acid led to a more gradual increase in P<sub>2</sub>O<sub>5</sub> concentration over time, while citric acid demonstrates a more significant increase in phosphorus concentration at all temperatures, especially at 70 °C. The activation energy for formic acid is 14.69 kJ/mol, indicating a diffusion-controlled reaction mechanism, whereas the activation energy for citric acid is higher, i.e., 35.78 kJ/mol, suggesting a more complex mechanism involving both diffusion and chemical processes. The present study highlights the importance of selecting appropriate reaction conditions to achieve maximum efficiency for the leaching of phosphate ore, depending on both temperature and reagent used. |
| format | Article |
| id | doaj-art-e3b6f51bea604e3ea74333a6080132c1 |
| institution | Kabale University |
| issn | 2673-6489 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Mining |
| spelling | doaj-art-e3b6f51bea604e3ea74333a6080132c12024-12-27T14:41:59ZengMDPI AGMining2673-64892024-10-014476677610.3390/mining4040043Dissolution Kinetics of Carbonates in Low-Grade Microgranular Phosphate Ore Using Organic Acids as Leaching AgentsYerkebulan Raiymbekov0Perizat Abdurazova1Ulzhalgas Nazarbek2High School of Chemical Engineering and Biotechnology, M.Auezov South Kazakhstan University, Shymkent 160012, KazakhstanFaculty of Natural Sciences, U.Zhanibekov South Kazakhstan Pedagogical University, Shymkent 160012, KazakhstanHigh School of Chemical Engineering and Biotechnology, M.Auezov South Kazakhstan University, Shymkent 160012, KazakhstanThe present study investigates the process of selective leaching of low-grade phosphate ore of the Karatau basin using organic acids such as formic and citric acids. Chemical and instrumental analyses of the investigated phosphate ore were carried out, including X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX), and Fourier-transform infrared spectroscopy (FTIR). Based on experimental data, reaction rate constants were calculated, and the obtained activation energies for each of the reagents were used. The reaction rate constants indicate that formic acid led to a more gradual increase in P<sub>2</sub>O<sub>5</sub> concentration over time, while citric acid demonstrates a more significant increase in phosphorus concentration at all temperatures, especially at 70 °C. The activation energy for formic acid is 14.69 kJ/mol, indicating a diffusion-controlled reaction mechanism, whereas the activation energy for citric acid is higher, i.e., 35.78 kJ/mol, suggesting a more complex mechanism involving both diffusion and chemical processes. The present study highlights the importance of selecting appropriate reaction conditions to achieve maximum efficiency for the leaching of phosphate ore, depending on both temperature and reagent used.https://www.mdpi.com/2673-6489/4/4/43selective leachinglow-grade phosphate orecarbonatesorganic acids |
| spellingShingle | Yerkebulan Raiymbekov Perizat Abdurazova Ulzhalgas Nazarbek Dissolution Kinetics of Carbonates in Low-Grade Microgranular Phosphate Ore Using Organic Acids as Leaching Agents Mining selective leaching low-grade phosphate ore carbonates organic acids |
| title | Dissolution Kinetics of Carbonates in Low-Grade Microgranular Phosphate Ore Using Organic Acids as Leaching Agents |
| title_full | Dissolution Kinetics of Carbonates in Low-Grade Microgranular Phosphate Ore Using Organic Acids as Leaching Agents |
| title_fullStr | Dissolution Kinetics of Carbonates in Low-Grade Microgranular Phosphate Ore Using Organic Acids as Leaching Agents |
| title_full_unstemmed | Dissolution Kinetics of Carbonates in Low-Grade Microgranular Phosphate Ore Using Organic Acids as Leaching Agents |
| title_short | Dissolution Kinetics of Carbonates in Low-Grade Microgranular Phosphate Ore Using Organic Acids as Leaching Agents |
| title_sort | dissolution kinetics of carbonates in low grade microgranular phosphate ore using organic acids as leaching agents |
| topic | selective leaching low-grade phosphate ore carbonates organic acids |
| url | https://www.mdpi.com/2673-6489/4/4/43 |
| work_keys_str_mv | AT yerkebulanraiymbekov dissolutionkineticsofcarbonatesinlowgrademicrogranularphosphateoreusingorganicacidsasleachingagents AT perizatabdurazova dissolutionkineticsofcarbonatesinlowgrademicrogranularphosphateoreusingorganicacidsasleachingagents AT ulzhalgasnazarbek dissolutionkineticsofcarbonatesinlowgrademicrogranularphosphateoreusingorganicacidsasleachingagents |