— This paper reviews the industrial practices and fundamental research surrounding iron ore flotation. The advantages and disadvantages of direct flotation, cationic reverse flotation, and...

 — In this study, the flotation kinetics of quartz and hematite single mineral systems were studied for a range of particle sizes at different solid concentrations in order to understand their respective flotation behaviors and implications for entrainment during iron ore flotation.

 — A two-stage iron ore flotation process was developed. •. Amidoamine proved an effective collector for silicate. •. Selective flotation of quartz and hematite was achieved with no use of depressant. •. Kaolinite requires higher dosages of amidoamine for flotation. •. Steric hindrance and hydrogen bonding could influence selective flotation. Abstract

 — The main objective within an iron ore flotation circuit is to depress the hematite (Fe 2 O 3) while selectively recovering the quartz (SiO 2), in a reverse flotation operation.

 — The flotation results with oleic acid and dodecylamine show better recovery of iron values in the hematite–quartz mixture as well as in the naturally occurring high silica ore compared to the hematite–clay mixture and the high alumina ore respectively.

 — Based on the obtained results by the investigation of the features of magnetite–hematite ores from the Mikhailovskoye deposit, a technological scheme of magneto-flotation beneficiation was proposed, which allows producing iron concentrates with 69% of iron content and less than 2.7% silicon dioxide for the production of pellets …

 — Low grade deposits containing specular hematite (Fe2 O3) as the major iron mineral as low as 25% Fe can be treated with "Sub-A" Flotation to produce concentrates that average better than 62% Fe with less than 9% SiO2 and with a high recovery.

 — The flotation separation is mainly used for the extraction of iron from the fine-grained and particulate haematite. If it is difficult to recover fine ore particles smaller than 10μm by other methods, the flotation separation method can be adopted.

 — ABSTRACT. The use of a biosurfactant (BS) in mineral flotation offers numerous advantages over conventional surfactants, such as their low toxicity, high degradation kinetics, and potential for selectively treating low-grade ores.

 — To explore the flotation feasibility and flotation law of iron minerals from amphibole-type iron oxide ore with full-size minerals, a systematic study on the flotation behaviors of single minerals hematite, quartz, and amphibole was carried out with the anionic reverse flotation system.