ISSN 2594-357X
22° Simpósio de Mineração — vol. 22, num.22 (2023)
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Abstract
As iron ore producers look to minimize their ecological impact, low carbon technologies such as direct-reduced iron (DRI) are gaining increased interest. DRI requires high-quality iron ore feed with stringent quality requirements, making the upgrading of the concentrate necessary. Beneficiation processes such as flotation, magnetic separation, gravity methods, and classification by size can be considered, alone or in conjunction. This paper explores the application of fine screening technology in direct-reduced iron (DRI) production. The mechanisms of screening are discussed with particular focus on how they differ from conventional hydrocyclone technology. Screening can be employed at a variety of applications in an iron ore concentration plant, but the most effective strategy for high purity concentrate is a fundamental shift in the grind-grade relationship in the milling stage. Two historic case studies are explored demonstrating how this has been employed historically.
As iron ore producers look to minimize their ecological impact, low carbon technologies such as direct-reduced iron (DRI) are gaining increased interest. DRI requires high-quality iron ore feed with stringent quality requirements, making the upgrading of the concentrate necessary. Beneficiation processes such as flotation, magnetic separation, gravity methods, and classification by size can be considered, alone or in conjunction. This paper explores the application of fine screening technology in direct-reduced iron (DRI) production. The mechanisms of screening are discussed with particular focus on how they differ from conventional hydrocyclone technology. Screening can be employed at a variety of applications in an iron ore concentration plant, but the most effective strategy for high purity concentrate is a fundamental shift in the grind-grade relationship in the milling stage. Two historic case studies are explored demonstrating how this has been employed historically.
Keywords
Silica Reduction; Direct Reduction (DRI); Fine Screening; Beneficiation
Silica Reduction; Direct Reduction (DRI); Fine Screening; Beneficiation
How to refer
Winterfield, Robert;
Zhang, Dr. Baojie;
Baeta, Marcelo.
THE APPLICATION OF FINE SCREENING TECHNOLOGY IN DR-GRADE CONCENTRATE PRODUCTION
,
p. 132-141.
In: 22° Simpósio de Mineração,
São Paulo,
2023.
ISSN: 2594-357X
, DOI 10.5151/2594-357X-39665
