Volume 12 Issue 2 November - January 2017
Research Paper
High Temperature
Application of Oil Of Vitriol for Hydrometallurgical Extraction of Manganese
S. V. A. R. Sastry*
Senior Assistant
Professor, Department of Chemical Engineering, MVGR College of Engineering,
Vizianagaram, Andhra Pradesh, India.
Sastry, S.V.A.R.,
(2017). High Temperature Application of Oil Of Vitriol for Hydrometallurgical
Extraction of Manganese. i-manager’s
Journal on Future Engineering and Technology, 12(2), 1-8. https://doi.org/10.26634/jfet.12.2.10360
Abstract
The
current study assesses the prospect of selective leaching of Manganese (Mn)
from complex, in a high temperature sulphuric acid medium. The factors
affecting the sulphuric acid leaching of the manganese complex in presence of
various parameters were investigated. The three variables studied were
temperature of leaching medium, leaching o o time, and concentration of
sulphuric acid. Experiments were carried out at temperature ranging from 40 C
to 110 C, time from 30 minutes to 150 minutes and sulphuric acid concentration
from 2% to 6%. The feed ratio is 1:3 (5g MnSO + 4 15g impurities). The feed
prepared is in close resemblance to pyrolusite ore. Manganese leaching amount
was measured by using the standard manganese concentration curve and estimated
by titration method. Effects of various acid concentrations on leaching
efficiency were studied. The optimum conditions established for maximum metal O
extraction are: 100 C temperature, 120 minutes time, and 5% concentrated
sulphuric acid. Under these conditions, recovery of Mn was 98%, and the leached
residues were analyzed. The present process may find application of separation
of manganese from iron and aluminium at high temperature during various
hydrometallurgical treatment of manganese based ores.
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