An overview of the beneficiation of iron ores via reverse cationic flotation

Filippov, L.O.; Severov, V.V.; Filippova, I.V.

doi:10.1016/j.minpro.2014.01.002

Cited by 201 publications

(83 citation statements)

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“…As well known, the method choice to concentrate a specific iron ore depends on several factors such as its physical and mineralogical properties, and the liberation fraction size of quartz (Araujo et al, 2003;Filippov et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…The cationic reverse flotation at pH 10.5, using corn starch as iron minerals depressant and amine as silicate gangue collector, is the most successful route used to concentrate fines of iron ores (Filippov et al, 2014, Araujo et al, 2005. However, the particles in fraction size smaller than 4 µm hamper the selectivity of this process route.…”

Section: Introductionmentioning

confidence: 99%

“…However, the particles in fraction size smaller than 4 µm hamper the selectivity of this process route. To solve this problem a previous deslaming operation is used, which causes metal loss (Houot, 1983;Ma et al, 2011;Filippov et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Influence of Mn2+ ion in reverse cationic flotation of iron ore

Cruz¹,

Lima

2015

Rem: Rev. Esc. Minas

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This paper presents the study results of Mn 2+ ion influence on reverse cationic flotation of iron ore at pH 10.5. A small influence was observed on all response variables evaluated: mass recovery, Fe metallurgical recovery, grade of Fe and SiO 2 in obtained concentrates for dosages of MnCl 2 from 600 g/ton. The conditioning of pulp with ethylene diamine tetraacetic acid -EDTA complexing agent (720 g/ton) in presence of MnCl 2 (600 g/ton) at natural pH, before the addition and conditioning with corn starch (400 g/ton) and amine (50 g/ton) at pH 10.5, produced a concentrate with 63% Fe, 5.1% SiO 2 , which is similar to results obtained in flotation test without manganese species present in pulp.keywords: Iron ore; reverse cationic flotation, Mn 2+ ion, EDTA.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Influence of Mn2+ ion in reverse cationic flotation of iron ore

Cruz¹,

Lima

2015

Rem: Rev. Esc. Minas

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“…Turrer and Peres (2010) showed the importance of the amylose/amylopectin ratio in starch during hematite depression and point out that amylopectin reduces the hematite froth flotation more profoundly than amylose when a primary ether amine is used as a collector. According Iwasaki and Lai (1965) and Fillipov, Severov and Fillippova (2014) the effectiveness of the alkali gelatinization is strongly affected by the starch/NaOH ratio used in the gelatinization. The last authors even suggest that alkali gelatinization has been studied less than the thermal method.…”

Section: Introductionmentioning

confidence: 99%

Temperature influence in cornstarch gelatinization for froth flotation

Silva

Peres

et al. 2017

REM, Int. Eng. J.

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Starches are widely used as depressant in froth flotation operations in Brazil due to their efficiency, increasing the selectivity in the inverse flotation of quartz, depressing iron ore. The starch market has been growing and improving in recent years, leading to better products attending the requirements of the mineral industry. The major source of starch used for iron ore is the cornstarch, which needs to be gelatinized, by heat or sodium hydroxide (NaOH) addition (also known as caustisized starch), prior its use. This stage has a direct impact on industrials costs, since the lower consumption of NaOH in gelatinization provides better control of the pH in the froth flotation and reduces the amount of electrolytes present in the pulp. In order to evaluate the influence of temperature on the NaOH consumption, gelatinization tests were carried out with temperatures ranging from 25 to 65 °C, measuring the volume of NaOH. All tests were performed in triplicate. A linear model correlating the temperature and the NaOH need for the cornstarch gelatinization has been stablished. This model can allow mineral industries to optimize the NaOH amount used to prepare the depressant used in froth flotation. For example, the reduction in NaOH could easily reach 480 L per ton of cornstarch when performing gelatinization with the cornstarch solution at 35 °C instead of 25 °C (reduction of approximately 34% in the NaOH consumed).

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“…Flotation is the most effective and economical technology to further upgrade iron concentrates [1]. Intensive investigations on iron ore flotation began in America in the 1930s.…”

Section: Introductionmentioning

confidence: 99%

Discovery of a Novel Cationic Surfactant: Tributyltetradecyl-Phosphonium Chloride for Iron Ore Flotation: From Prediction to Experimental Verification

Pan

Gao

et al. 2017

Minerals

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Abstract:In this work, tributyltetradecyl-phosphonium chloride (TTPC), has been first introduced to be a novel and efficient cationic surfactant for cationic reverse flotation separation of quartz from magnetite. The first-principles density functional theory calculations, Zeta potential measurements and adsorption isotherm measurements consistently predict that TTPC may be a promising collector that is better than dodecyl triethyl ammonium chloride (DTAC), based on the facts that TTPC and DTAC both prefer to physically adsorb on the quartz surface owing to electrostatic force, but the active part (P + (C 4 H 9 ) 3 ) of TTPC takes much more positive charges than that (N + (CH 3 ) 3 ) of DTAC. The micro-flotation and Bench-scale flotation results further verify that TTPC presents a stronger collecting power and much better selectivity for iron ore reverse flotation in comparison to the conventional collector DTAC. Furthermore, the corresponding adsorption mechanism of TTPC on the quartz have also been investigated in detail. This work might show a good example to discover a potential candidate collector by analogy with a known excellent collector based on reasonable prediction.

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An overview of the beneficiation of iron ores via reverse cationic flotation

Cited by 201 publications

References 50 publications

Influence of Mn2+ ion in reverse cationic flotation of iron ore

Influence of Mn2+ ion in reverse cationic flotation of iron ore

Temperature influence in cornstarch gelatinization for froth flotation

Discovery of a Novel Cationic Surfactant: Tributyltetradecyl-Phosphonium Chloride for Iron Ore Flotation: From Prediction to Experimental Verification

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