Blar i Øvrige samlinger på forfatter "Kaffash, Hamideh"
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CO2 Gasification of Densified Biomass: The Influence of K on Reaction Rate
Kaffash, Hamideh; Tangstad, Merete (Peer reviewed; Journal article, 2022)The Boudouard reactivity of metallurgical coke and densified charcoals was investigated in this study. Potassium is known to accumulate in ferromanganese furnaces and hence was evaluated as a catalyst of CO2 reactivity. ... -
Densification of Biocarbon and Its Effect on CO2 Reactivity
Kaffash, Hamideh; Tangstad, Merete; Surup, Gerrit Ralf (Peer reviewed; Journal article, 2021)Charcoal is an interesting reducing agent because it is produced from biomass which is renewable and does not contribute to global warming, provided that there is a balance between the felling of timber and growth of trees. ... -
Factors influencing dissolution of carbonaceous materials in liquid Fe– Mn
Kaffash, Hamideh; Tangstad, Merete (Peer reviewed; Journal article, 2020)Carbon dissolution from four types of metallurgical cokes and graphite was investigated by using immersion rods in a resistance furnace to clarify the influence of factors governing the rate of carbon dissolution from ... -
Life Cycle Based Climate Emissions of Charcoal Conditioning Routes for the Use in the Ferro-Alloy Production
Surup, Gerrit Ralf; Kaffash, Hamideh; Ma, Yan; Trubetskaya, Anna; Pettersen, Johan Berg; Tangstad, Merete (Peer reviewed; Journal article, 2022)Renewable reductants are intended to significantly reduce CO2 emissions from ferro-alloy production, e.g., by up to 80% in 2050 in Norway. However, charcoals provide inferior properties compared to fossil fuel-based ... -
Study of the Physical Behaviour and the Carbothermal Reduction of Self-Reducing Briquettes Developed with Iron Ore Fines, Charcoal and Silica Fume Residues
da Luz Pascoal, Aline; Aristides Victor Rossoni, Hygor; Kaffash, Hamideh; Tangstad, Merete; Bicalho Henriques, Andréia (Peer reviewed; Journal article, 2022)Self-reducing briquettes made with waste (silica fume, iron ore and charcoal fines) from the FeSi75 industry were studied. The objective was to determine if these briquettes could be used as a complementary load in submerged ... -
Wettability of cokes by Fe-Mn melt
Kaffash, Hamideh; Xing, Xing; Tangstad, Merete (Peer reviewed; Journal article, 2020)Four metallurgical cokes were heat treated at 1250 °C to 1550 °C in argon atmosphere. The influence of heat treatment on the microstructure of metallurgical cokes was characterized using X-ray diffraction and Raman ...