NDLI: Recovery of Hematite from Banded Hematite Quartzite of Southern India by Magnetic Separation and Reverse Flotation

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Recovery of Hematite from Banded Hematite Quartzite of Southern India by Magnetic Separation and Reverse Flotation

Content Provider	MDPI
Author	Swamy, Aspari Kumara Nikkam, Suresh Palthur, Sharath Kumar
Copyright Year	2022
Description	Recovery and grade are the two crucial performance parameters commonly used in mineral processing plant operations. These two parameters are interdependent. An increase in recovery would result in a decreased product grade and vice versa. The present study enumerates concentration efficiency (CE),which can be adopted exclusively for processing low-grade hematite ore by WHIMS—the reverse flotation route to produce a pellet grade concentrate. In this study, the ore’s amenability by wet high-intensity magnetic separation followed by the reverse flotation of a magnetic concentrate route is investigated on BHQ samples of the Sandur schist belt (Kumaraswamy hills), India, after its characterization by microscopic and XRD studies. Dodecyl amine acetate was used as a collector to float siliceous gangue while depressing hematite using the freshly synthesized caustic starch as a depressant. The separation efficiency of the flotation was evaluated by estimating the grade, recovery, and concentration efficiency. The WHIMS conducted using the feed with the particle size minus 106 µm $(d_{80}$ = 82 µm) followed by reverse flotation produced a pellet grade concentrate assaying 64.60% Fe, a 0.32 alumina-to-silica ratio with 60.4% Fe recovery, and a yield of 37.4% with 79.0% concentration separation efficiency.
Starting Page	1095
e-ISSN	2075163X
DOI	10.3390/min12091095
Journal	Minerals
Issue Number	9
Volume Number	12
Language	English
Publisher	MDPI
Publisher Date	2022-08-29
Access Restriction	Open
Subject Keyword	Minerals Bhq Reverse Flotation Concentration Efficiency Beneficiation of Iron Ores
Content Type	Text
Resource Type	Article

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