The depression of pyrite in selective flotation by different reagent systems – A Literature review

XPS study on the mechanism of starch-hematite surface chemical complexation

Synthesis of N,N-Bis(2-hydroxypropyl)laurylamine and its flotation on quartz

Recently, beneficiation of iron from low-grade ores with high impurities has been a matter of discussion. Flotation is one of the most effective technologies for the upgrading of low-grade, finely grained iron ores. This method can also be applied to reduce the impurities content in magnetite concentrates obtained using wet low- and high-intensity magnetic separations. In this paper, several studies describing the processing of iron ores via direct and reverse cationic and anionic flotation are reviewed. The objective of this review was to present and identify the effects of different flotation conditions on removal of specific impurities in iron ore such as quartz, alumina, phosphorous, and sulfur. Novel and common used collectors, depressants, auxiliary reagents, and their mixtures in the flotation are tabulated. This paper attempts to provide an explanation for the current state and use of iron ore flotation methods, as well as to present some ideas on future initiatives and potential developme...

Reagents types in flotation of iron oxide minerals: A review

The surface state of hematite and its wetting characteristics

Investigations on different starches as depressants for iron ore flotation

Processing of banded magnetite quartzite (BMQ) ore using flotation techniques

A china clay sample from Jharkhand State, India, containing 65.0 wt.% SiO 2 , 22.7% Al 2 O 3 , 1.77% Fe 2 O 3 and 9.10% LOI was subjected to physical beneficiation and acid leaching studies to improve its quality. The clay was characterized by optical microscopy, XRD, and wet chemical analysis methods. Quartz and goethite are the two major impurities. High intensity magnetic separation removed only 10% of the total iron. Experiments with oxalic acid were carried out to establish the leaching kinetics of iron and the effects of acid concentration, time and temperature on iron leaching were also examined. The study demonstrated that ∼90% of total iron could be removed using 5% oxalic acid. The dissolution of iron from clay is best described by diffusion of ions through the product layer of constant size spherical particles. The activation energy of the leaching process over the temperature range was calculated to be 51.14 kJ/mol.

Bhagyalaxmi Kar

Papers

Investigations on different starches as depressants for iron ore flotation

Processing of banded magnetite quartzite (BMQ) ore using flotation techniques

Characterization and beneficiation studies for the removal of iron from a china clay from India