Stepped-Flotation of Mixed Magnetic Concentrate Carbonates-Containing in Donganshan

Abstract:

There are nearly 500 million tons of hematite ores carbonate-containing in Donganshang, China. However, the flotation flowsheet previously of in that area was seriously affected by the siderite. Therefore, many ores could not be processed by ordinary methods. In this study, mixed magnetic concentrate in scene was beneficiated by stepped-flotation, in which siderite was separated in first direct flotation step to eliminate its negative influence on hematite flotation, and then the high quality hematite concentrate could be obtained by second reverse flotation step. When the feed was mixed magnetic concentrate in scene with total iron grade of 42.84% and siderite content of 4.04%, an iron concentrate with iron grade of 67.84% and iron recovery of 69.47% was obtained in closed circuit of stepped-flotation.

• Periodical: Advanced Materials Research (Volume 454)
• Pages: 292-298
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.454.292
• Online since: January 2012
• Authors: An Lin Shao
• Keywords: General Reverse Flotation, Iron Ore, Mixed Magnetic Concentrate, Siderite, Stepped-Flotation

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