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Reverse flotation of silica from Kudremukh iron ore .2. Optimization of flotation process

Deshpande, RJ and Natarajan, KA and Kittur, SG and Rao, TRR (1997) Reverse flotation of silica from Kudremukh iron ore .2. Optimization of flotation process. In: Transactions of the Indian Institute of Metals, 50 (5). pp. 397-402.

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Abstract

An experimental programme based on statistical analysis was used for optimizing the reverse Rotation of silica from non-magnetic spiral preconcentrate of Kudremukh iron ore. Flotation of silica with amine and starch as the Rotation reagents was studied to estimate the optimum reagent levels at various mesh of grind. The experiments were first carried out using a two level three factor design. Analysis of the results showed that two parameters namely, the concentration level of the amine collector and the mesh of grind, were significant. Experiments based on an orthogonal design of the hexagonal type were then carried out to determine the effects of these two variables, on recovery and grade of the concentrate. Regression equations have been developed as models. Response contours have been plotted using the 'path of steepest ascent', maximum response has been optimized at 0.27 kg/ton of amine collector, 0.5 kg/ton of starch and mesh of grind of 48.7% passing 300 mesh to give a recovery of 83.43% of Fe in the concentrate containing 66.6% Fe and 2.17% SiO2.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to INDIAN INST METALS.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 30 Jun 2011 12:29
Last Modified: 30 Jun 2011 12:29
URI: http://eprints.iisc.ernet.in/id/eprint/38444

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