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Rapid and direct magnetization of goethite ore roasted by biomass fuel
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Teknisk materialfysik.
Vise andre og tillknytning
2012 (engelsk)Inngår i: Separation and Purification Technology, ISSN 1383-5866, E-ISSN 1873-3794, Vol. 94, s. 34-38Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Biomass is a renewable and carbon neutral solid fuel. Utilization of biomass in iron ore roasting process as heating agent and reducing agent contributes to energy conservation and emission reduction, and can partially replace for coal and coke. The biomass instead of coke was mixed together with iron ore powder from the north of Hainan province into ball roasting process to investigate the effects of mixture composition, reduction temperature, reaction time, the thermal reduction and magnetic properties of the mixture. The results show that the reduction temperature, reaction time and dosage of the biomass are correlated to the quality of the reduction and the magnetism of the iron ore, within the experimental conditions. The mechanism of the biomass reducing the weakly magnetic goethite into stronger magnetic iron oxide has been discussed. The results show that the goethite ores is dramatically reduced and magnetized by about 20 wt.% biomass at low roasting temperature. Application of biomass energy in iron ores roasting process is prospective to the effective use of biomass and for decreasing the consumption of fossil fuels in the steelmaking process.

sted, utgiver, år, opplag, sider
2012. Vol. 94, s. 34-38
Emneord [en]
Biomass fuel, Reduction roasting, Goethite ore, Magnetization
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-99233DOI: 10.1016/j.seppur.2012.04.008ISI: 000305711300005Scopus ID: 2-s2.0-84860600027OAI: oai:DiVA.org:kth-99233DiVA, id: diva2:541865
Merknad
Qc 20120725Tilgjengelig fra: 2012-07-25 Laget: 2012-07-23 Sist oppdatert: 2024-03-18bibliografisk kontrollert

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Rao, K. Venkat

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