Author/Authors
?zdemir، نويسنده , , Mine and Cak?r، نويسنده , , Dilek and K?pçak، نويسنده , , ?lker، نويسنده ,
DocumentNumber
3267775
Title Of Article
Magnesium recovery from magnesite tailings by acid leaching and production of magnesium chloride hexahydrate from leaching solution by evaporation
شماره ركورد
10291
Latin Abstract
The recovery of magnesium from magnesite tailings in aqueous hydrochloric acid solutions by acid leaching was studied in a batch reactor using hydrochloric acid solutions. Subsequent, production of magnesium chloride hexahydrate (MgCl2.6H2O) from leaching solution was also investigated. The effects of temperature, acid concentration, solid-to-liquid ratio, particle size and stirring speed on the leaching process were investigated. The pseudo-second-order reaction model seemed to be appropriate for the magnesium leaching. The activation energy of the leaching process was estimated to be 62.4 kJ mol− 1. Finally, MgCl2.6H2O in a purity of 91% was produced by evaporation of leaching solution obtained at a temperature of 40 °C, 1.0 M acid, solid-to-liquid ratio of 10 g/L, particle size of 100 µm, stirring speed of 1250 rpm and leaching time of 60 min.
From Page
209
NaturalLanguageKeyword
Magnesite tailings , Hydrochloric Acid , Magnesium leaching , Magnesium chloride hexahydrate
JournalTitle
Studia Iranica
To Page
212
To Page
212
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