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Fig. 8


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BSE image, EDS and atomic (%) of reduced product at 700 °C, 60 min with 6% charcoal (a) BHQ (1–2: Wustite; 3: Silicon oxide; 4: silicon oxide surrounded by iron phase; (b) BHJ (1–3: Wustite; 2–4: Silicon oxide) and; (c) Qualitative XRD analysis of reduced magnetic concentrate in a muffle furnace.

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