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7th April 2016, 09:43 AM
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Join Date: May 2012
Re: Ferruginous Manganese Ore

Ya sure buddy I will help you here to get the notes on Studies on beneficiation of ferruginous manganese ores using solid reductants.

Introduction

A manganese ore sample from TISCO, Joda West analysing 37.5% Mn, 13.6% Fe, 3.4%
810 2 and 7% Al23 0 was studied for its amena- bility bility to beneficiation by reduction roasting followed by magnetic separation.

It contained pyrolusite, cryptomelane, manganite and psilomelane as manganese minerals associated with goethite, limonite and quartz. Manganese minerals were liberated at a size below —48 mesh.

Magnetic Reduction Roasting :
Magnetising reduction roasting employing gaseous or solid reductant below 570°C converts iron oxide minerals into magnetite facilitating magnetic separation at low intensity giving a non-magnetic manganese concentrate with high Mn/Fe ratio suitable for ferromanganese production.

Earlier studies (1,2) on bench scale applying magnetising reduction roast technique using coke oven gas on ferruginous manganese ores of lean and medium grade followed by magnetic separation gave a satisfactory yield of non-magnetic manganese concentrate.

The present sample when subjected to similar treatment yielded a non-magnetic concentrate analyzing 51.59% Mn with Mn/Fe ratio 8.7 and a recovery of 75.5% Mn.

Studies on beneficiation of ferruginous manganese ores using solid reductants




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