MANGANESE ORE SINTERING MISCONCEPTS AND FACTS - IIM

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ExampleLUMPY ORE + FINES(WITHOUT SINTERING)SiMn – 2.2 T of 36-37% Mn ore is consumed.Suppose 50% fines are charged. Cost of Lumps & fines at 50:50 is1.1T @ Rs. 12000/T of Lumpy Ore = Rs. 13,200+ 1.1T @ Rs. 6000/T of Fines = Rs. 6,600__________= Rs.19,800 against Rs. 26,400 of100% lumps i.e. difference of Rs. 6,600/T of SiMn. This is the real culprit temptation.SINTERING OF ORECost of sintering -- Rs. 1600 /T of finesTherefore Cost of Sinter = 2.42T @ Rs. 6,600/T = Rs. 15,972+ 2.20T @ Rs.1,600/T =Rs. 3,520+ Add : interest and depreciation @ Rs. 700/T _________=Rs. 20,200/T of SiMnDifference is only Rs. 400/T which can be compensated with all the benefits of useof lumpy, porous, highly resistive sinter.6
SECOND MISCONCEPTDuring sintering, the silica content in finished sinterincreases to great extent leading to higher slag volume,higher Mn losses and higher power, so sinters areuneconomical.FACT• Oxygen loss during sintering is 9 to 10 % only(MnO2 Mn3O4).• Silica (SiO2) addition through coke is 1 to 1.2 %only.• Overall silica (SiO2) increase in Mn input is 0.6 to0.65 % only.7
Page 1 and 2: MANGANESE ORE SINTERINGMISCONCEPTS
Page 3 and 4: COMPANY INTRODUCTION• Established
Page 5: FIRST MISCONCEPTNo need for sinteri
Page 9 and 10: FOURTH MISCONCEPTSinters can not be
Page 11 and 12: RECOMMENDATIONS• Please get to kn
Page 13 and 14: CONCLUSIONSCharacteristics comparis
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

MANGANESE ORE SINTERING MISCONCEPTS AND FACTS - IIM

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