Journal
INTERNATIONAL JOURNAL OF MINERAL PROCESSING
Volume 130, Issue -, Pages 108-113Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.minpro.2014.05.010
Keywords
Ferric bauxite; Grindability; Direct reduction
Funding
- National Natural Science Foundation of China [51304012]
- China Postdoctoral Science Foundation [2013M530529]
- Open Foundation of the State Key Laboratory of Advanced Metallurgy (USTB) [KF 13-05]
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This paper investigates the effects of nonmetallic additives on the grindability of iron grains using SEM-EDS and XRD. With different kinds of nonmetallic additives added to direct reduction systems, significant differences were noted in terms of particle size, morphology, and the relationship with slag of iron grains. With the addition of CaO + Na2CO3, CaCO3 + Na2CO3 or without an additive, high iron grain grindability cannot be achieved. However, when Na2CO3 is used, iron grindability is improved. Under optimal conditions, the grade of iron powder is 95.6%, and the recovery is 90.2%. (C) 2014 Elsevier B.V. All rights reserved.
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