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RESEARCH PRODUCT
Effect of operating conditions and feedstock composition on the properties of manganese oxide or quartz charcoal pellets for the use in ferroalloy industries
James J. LeahyMarius GroßarthSergey BeloshapkinPierre KibleurHenrik Kofoed NielsenMirko ZiegnerJan Van Den BulckeAnna TrubetskayaMichael MüllerElena YazhenskikhRüdiger DeikeGerrit Ralf Surupsubject
BriquetteMaterials science020209 energyComposite numberPelletsFerroalloy02 engineering and technologyRaw materialIndustrial and Manufacturing Engineering020401 chemical engineeringMaschinenbauPellet0202 electrical engineering electronic engineering information engineering0204 chemical engineeringElectrical and Electronic EngineeringCharcoalbiooilCivil and Structural EngineeringferroalloysMechanical Engineeringdigestive oral and skin physiologyMetallurgyashBuilding and Constructionpyrolysisequipment and suppliesPollutionGeneral Energyvisual_artvisual_art.visual_art_mediumddc:600Pyrolysischarcoaldescription
peer-reviewed The full text of this article will not be available until the embargo expires on the 26/12/2021 This study investigates the effect of heat treatment temperature on the properties of charcoal composite pellets used for the reduction of ferroalloys. The heavy fraction of biooil was used as a binder for the charcoal ore pellet preparation. The effect of heat treatment temperature on the pellet shrinkage was related to the degree of reduction which varied with feedstock and ore composition. The results showed that the size and shape of the charcoal pellets were not affected by the biooil devolatilization. Manganese charcoal pellets showed higher electrical resistance during pyrolysis, whereas the structure, composition and electrical resistance of silica composite pellets remained unaffected by heat treatment temperatures < 1650 °C. However, the secondary heat treatment decreased the CO2 gasification reactivity and electrical resistivity of charcoal composite pellets. In addition, the findings of this work demonstrate the potential for using biooil as a binder for the charcoal composite pellets used in ferroalloy industries. The composite pellets are suitable to pre-reduce the manganese ore in the low temperature zones of an industrial furnace, and the charcoal pellets can be used as an alternative bed material. However, the high CO2 reactivity may create challenges during the direct replacement of metallurgical coke with the bio-reductants.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-02-01 |