Leaching kinetics for iron from partially laterised khondalite rocks by hydrochloric acid solution

Swain, Ranjita and Rao, R Bhima (2010) Leaching kinetics for iron from partially laterised khondalite rocks by hydrochloric acid solution. In: Proceedings of the XI International Seminar on Mineral Processing Technology (MPT-2010), Dec 2010, NML Jamshedpur, India.

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Abstract

Partially Lateritised Khondalite (PLK) rocks are the waste materials generated during the mining of bauxite. The major discolouring elemental impurity in the PLK rock is iron oxides; render it unsuitable for its use as a filler material. In this paper an attempt is made to remove iron by leaching using hydrochloric acid. The best condition found for the leaching study is 3 M acid concentration at 80°C temperature for 4 hours time period. The apparent activation energy calculated from the first order reaction kinetics is 40.72 kJ/ mol. The product is characterized by particle size analysis, surface morphology, mineral phases and brightness. The brightness of the product is found about 80%, which is suitable for filler industrial application.

Item Type:Conference or Workshop Item (Paper)
Official URL/DOI:http://www.nmlindia.org
Uncontrolled Keywords:Partially Laterised Khondalite (PLK) rock, XRD, SEM/EDAX, Iron, Acid leaching, Dissolution kinetics, Activation energy.
Divisions:Mineral Processing
ID Code:2504
Deposited By:Dr. A K Sahu
Deposited On:14 Feb 2011 13:55
Last Modified:19 Aug 2015 16:46
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