MANGANESE ORE SINTERING MISCONCEPTS AND FACTS - IIM
MANGANESE ORE SINTERING MISCONCEPTS AND FACTS - IIM MANGANESE ORE SINTERING MISCONCEPTS AND FACTS - IIM
CONCLUSIONSCharacteristics comparison between fines and sinters of Mn Ore forFeMn / SiMn productionSN DETAILS Mn ORE FINES Mn ORE SINTERS1Use in FeMn /SiMn Production2 Silica contentLimited to 10% (maximum) alongwith lumpy ore. Otherwise screenedore i.e. +3mm or +5mm only beVarying from 30% to 85% inused. 100% fines are nevervarious plants.tolerated in furnaces, however, fewRecent development – 100% usecases have been reported to usein SiMn production plant in12mm ore fines with furnace cap ofFrance.7.5 MVA / 9 MVA only. Tolerance inlarge furnaces (12 MVA & above) isrestricted to 5 to 8% only.Normally higher than lumps, leadingto higher slag volume which in turnincreases power.Increases by 1%(Max) over finesdue to addition of Coke finesduring sintering12
CONCLUSIONSCharacteristics comparison between fines and sinters of Mn Ore forFeMn / SiMn productionSN DETAILS Mn ORE FINES Mn ORE SINTERS3 Phos content Normally higher than lumps.4 Porosity5Thermaldissociation in thefurnaceNIL. Fines tend to decreasespermeability of charge mix and withmoisture, certainly forms crust.Tendency to hold moisture and withlow permeability leads to furnaceexplosions and eratic eruption.Eratic dissociation. Fumes lossesare high.Part of Phos reacts duringsintering and hence there isslight decrease in phos content35% to 45% porosity, whichhelps in better permeability ofcharge and much better gas solidreactions. Smelting time reduces.Sinters are stable upto 900degree C which maintainexcellent material descend in F/Cand good reaction zone isachieved. 13
- Page 1 and 2: MANGANESE ORE SINTERINGMISCONCEPTS
- Page 3 and 4: COMPANY INTRODUCTION• Established
- Page 5 and 6: FIRST MISCONCEPTNo need for sinteri
- Page 7 and 8: SECOND MISCONCEPTDuring sintering,
- Page 9 and 10: FOURTH MISCONCEPTSinters can not be
- Page 11: RECOMMENDATIONS• Please get to kn
- Page 15 and 16: CONCLUSIONSCharacteristics comparis
- Page 17 and 18: GESPL SOLUTION FOR INDEGINEOUS SINT
- Page 19 and 20: ADVANTAGES OF MINITEC-GESPL SINTER
- Page 21: GESPL - A Total Solution for Benefi
CONCLUSIONSCharacteristics comparison between fines and sinters of Mn Ore forFeMn / SiMn productionSN DETAILS Mn <strong>ORE</strong> FINES Mn <strong>ORE</strong> SINTERS3 Phos content Normally higher than lumps.4 Porosity5Thermaldissociation in thefurnaceNIL. Fines tend to decreasespermeability of charge mix and withmoisture, certainly forms crust.Tendency to hold moisture and withlow permeability leads to furnaceexplosions and eratic eruption.Eratic dissociation. Fumes lossesare high.Part of Phos reacts duringsintering and hence there isslight decrease in phos content35% to 45% porosity, whichhelps in better permeability ofcharge and much better gas solidreactions. Smelting time reduces.Sinters are stable upto 900degree C which maintainexcellent material descend in F/Cand good reaction zone isachieved. 13
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