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Received May 10, 2017
Accepted June 7, 2017
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Dissolution of North Korean Magnesite by using Hydrochloric Acid
1Strategic Minerals Utilization Research Department, Korea Institute of Geoscience and Mineral Resources, 124, Gwahak-ro, Yuseong-gu, Daejeon, 34132, Korea 2Department of Resources Recycling, University of Science and Technology, 217, Gajeong-ro, Yuseong-gu, Daejeon, 34113, Korea
jskang@kigam.re.kr, jskang@ust.ac.kr
Korean Chemical Engineering Research, October 2017, 55(5), 711-717(7), 10.9713/kcer.2017.55.5.711 Epub 19 October 2017
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Abstract
A fundamental study was conducted on the dissolution of North Korean magnesite using hydrochloric acid to understand the dissolution behavior of the magnesium and impurities. The influence of the acid concentration, particle size of the magnesite, reaction temperature, and pulp density on the dissolution of magnesium, iron, calcium, aluminum, and silicon dioxide was studied. The experimental results showed that 98.5% of magnesium, 86.9% of iron, 87.3% of calcium, 23.6% of aluminum, and 20.4% of silicon dioxide were dissolved when magnesite particle sizes within the range of 75~105 μm were reacted using 3 M HCl solution under 6% pulp density at 363 K for 3 h. The residues that remained after the dissolution were silicon dioxide, talc, and clinochlore.
Keywords
References
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Wagman DD, Evans WH, Parker VB, Schumm RH, Halow I, Bailey SM, Churney KL, Nuttall RL, J. Phys. Chem. Ref Data, 11, 2 (1982)
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