Hydrometallurgical processing of low grade Egyptian magnesite
1
Alexandria University
Publication date: 2010-01-01
Corresponding author
Ashraf M. Amer
Environmental Science Dept. Fac. of Science; Alexandria University, 21511 Moharrem Bek, Alexandria , Egypt
Environmental Science Dept. Fac. of Science; Alexandria University, 21511 Moharrem Bek, Alexandria , Egypt
Physicochem. Probl. Miner. Process. 2010;44(1):5-12
KEYWORDS
ABSTRACT
The pressure leaching with carbon-dioxide for the production of high purity magnesium oxide from low grade magnestie oxide from (Halaib) deposit (Eastern Desert) has been studied. It was found that more than 90% of magnesium can be extracted under the following conditions: calcinations temperature 700oC, leaching temperature 50oC, carbon dioxide pressure 600 kPa and leaching time 120 min. The kinetics of the carbonation process was investigated and the activation energy of the process was determined (30 kg/mole).
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