Leaching kinetics of gibbsitic bauxite with sodium hydroxide
In this paper the results of a leaching kinetics study of bauxite ore with sodium hydroxide are presented. The effect of ore particle size, sodium hydroxide concentration and reaction temperature on the Al2O3 extraction rate was determined. The results obtained showed that 99% of Al2O3 was leached o...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2016-01-01
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| Series: | E3S Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/e3sconf/20160801021 |
| _version_ | 1819174552939266048 |
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| author | Abdel-Aal El-Sayed A. |
| author_facet | Abdel-Aal El-Sayed A. |
| author_sort | Abdel-Aal El-Sayed A. |
| collection | DOAJ |
| description | In this paper the results of a leaching kinetics study of bauxite ore with sodium hydroxide are presented. The effect of ore particle size, sodium hydroxide concentration and reaction temperature on the Al2O3 extraction rate was determined. The results obtained showed that 99% of Al2O3 was leached out using −200+270 mesh ore particle size at a reaction temperature of 105 °C for 60 min reaction time with 250 g/L NaOH. The solid-to-liquid ratio was maintained constant at 1:20. The results indicated that leaching of bauxite is the rate controlling process. The activation energy was determined to be 46.04 kJ/mole, which was characteristic for a chemically controlled process. |
| first_indexed | 2024-12-22T20:40:48Z |
| format | Article |
| id | doaj.art-4cd573e8ceef422ebdca606baf15fdd1 |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-12-22T20:40:48Z |
| publishDate | 2016-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-4cd573e8ceef422ebdca606baf15fdd12022-12-21T18:13:20ZengEDP SciencesE3S Web of Conferences2267-12422016-01-0180102110.1051/e3sconf/20160801021e3sconf_mec2016_01021Leaching kinetics of gibbsitic bauxite with sodium hydroxideAbdel-Aal El-Sayed A.0Central Metallurgical Research and Development Institute (CMRDI)In this paper the results of a leaching kinetics study of bauxite ore with sodium hydroxide are presented. The effect of ore particle size, sodium hydroxide concentration and reaction temperature on the Al2O3 extraction rate was determined. The results obtained showed that 99% of Al2O3 was leached out using −200+270 mesh ore particle size at a reaction temperature of 105 °C for 60 min reaction time with 250 g/L NaOH. The solid-to-liquid ratio was maintained constant at 1:20. The results indicated that leaching of bauxite is the rate controlling process. The activation energy was determined to be 46.04 kJ/mole, which was characteristic for a chemically controlled process.http://dx.doi.org/10.1051/e3sconf/20160801021 |
| spellingShingle | Abdel-Aal El-Sayed A. Leaching kinetics of gibbsitic bauxite with sodium hydroxide E3S Web of Conferences |
| title | Leaching kinetics of gibbsitic bauxite with sodium hydroxide |
| title_full | Leaching kinetics of gibbsitic bauxite with sodium hydroxide |
| title_fullStr | Leaching kinetics of gibbsitic bauxite with sodium hydroxide |
| title_full_unstemmed | Leaching kinetics of gibbsitic bauxite with sodium hydroxide |
| title_short | Leaching kinetics of gibbsitic bauxite with sodium hydroxide |
| title_sort | leaching kinetics of gibbsitic bauxite with sodium hydroxide |
| url | http://dx.doi.org/10.1051/e3sconf/20160801021 |
| work_keys_str_mv | AT abdelaalelsayeda leachingkineticsofgibbsiticbauxitewithsodiumhydroxide |