Analysis of quartz floatability using design of experiments

Matos, Vanderson Eney de; Peres, Antônio Eduardo Clark; Pereira, Carlos Alberto; Nogueira, Stephânia da Consolação Silva

doi:10.1590/0370-44672018720080

Cited by 8 publications

(4 citation statements)

References 9 publications

(14 reference statements)

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“…Normally, the increase in collector dosage enhances the quartz floatability, as shown by ethermonoamine in Figure 4. Etherdiamine yielded higher values of quartz floatability at 1 mg/L, replicat-ing the results found by Matos et al, (2019). Surprisingly, the results also show that the binary mixture 1:1 produced higher quartz floatability than each etheramine individually, clearly demonstrating the synergistic effect occurrence.…”

Section: Effect Of Etheramines and Their Mixture In Depressant Absencesupporting

confidence: 82%

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Collector mixtures and their synergistic effect on quartz floatability

et al. 2022

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Sinergy is the interaction of two or more agents to produce a combined effect greater than the sum of their separate effects. Etherdiamine yields superior results for quartz floatability in a Hallimond tube and higher selectivity in the reverse bench scale cationic flotation of an iron ore, when compared to ethermonoamine. Blending these collectors yields better results than each one used individually characterizing a synergistic effect. This work evaluated the effects of the collectors ethermonoamine, etherdiamine and the mixture of these at the ratio 1:1 on the flotation of the quartz through the microflotation and bench flotation tests with a typical Brazilian iron ore. The results demonstrated the occurrence of synergistic effects in tests performed at concentrations of 1 and 3 mg/L and pH 10.5, in the absence of a depressant. In the presence of a depressant, the synergy was not observed under the same tested conditions, due to the collector-depressant interaction. On other hand, the bench flotation tests indicated the occurrence of synergy regarding silica content in the concentrate while an additive effect was observed for the iron recovery and Selectivity Index index demonstrating that a feasibility of using collector mixtures in this process, was not clearly achieved on the tested ratio 1:1.

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Section: Effect Of Etheramines and Their Mixture In Depressant Absencesupporting

confidence: 82%

“…In tests using depressant solution, the mineral was initially conditioned for 5 minutes. The conditioning time of the collector and the flotation time was 1 min in each stage, following the procedure described by Matos et al, (2019). Nitrogen gas (60mL/min) was used for generating bubbles.…”

Section: Design Of Experiments (Doe)mentioning

confidence: 99%

Collector mixtures and their synergistic effect on quartz floatability

et al. 2022

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“…Scientific studies in the field of experimentation promotes great technological advances in order to optimize processes and generate more reliable results based on statistical tools, while minimizing the process time [20]. In this context, the increasingly frequent use of design of experiments (DOE) with mixtures stands out, which through mathematical and statistical tools, allows the simulation and optimization of experiments, being able to reduce their quantity and obtain better experimental answers in more efficient way [21,22]. Through DOE, it is possible to verify how the properties of interest are affected by the variation of the proportions of the mixture components as well as to analyze which component has the greatest influence on the response variable [23,24].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Process Parameters for Obtaining Polyethersulfone/Additives Membranes

Medeiros

Silva

Ferreira

et al. 2020

Water

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The membrane separation process has been significantly highlighted for the treatment of water and effluents in a scenario of water resource scarcity. Effective treatments capable of reducing costs and waste are always necessary, with the planning of the experiments before their execution of interest. The purpose of this work was to evaluate, through experimental planning, the influence of the polyethersulfone (PES), polyvinylpyrrolidone (PVP), and clay variables on the membranes’ parameters (viscosity and contact angle), seeking the best compositions for the production of hollow fiber membranes. Membranes were produced according to the compositions proposed by the planning and were characterized by Viscosity, Contact Angle, X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), and flow measurements. Through XRD, it was shown that the characteristic peaks of the clay remained in the membranes with higher concentrations. SEM analysis showed the influence of clay on the membranes’ porosity as well as the relation between “fingers” formation and PVP. From the flow measurement test, the relation between the obtained flow and the polymer and clay contents was verified. These tests showed the significant influence of clay on the membranes’ performance. Thus, the use of experimental planning resulted in the development of membranes and their importance in the design of future studies, making it possible to predict and simulate experiments.

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“…This reuse is possible through technological characterization, which in turn is an essential step for optimum use of mineral resources. It is a specialized branch applied to mineral processing that studies specific aspects of the mineralogy of samples, and the information obtained is used for the development and optimization of the processes (Gomes et al, 2011;Jones & Boger, 2012;Castro & Peres, 2013;Edraki et al, 2014;Kinnunen & Kaksonen, 2019;Matos et al, 2019;Pinto & Delboni Júnior, 2019;Tayebi-Krorami et al, 2019;Chácara & Oliveira Filho, 2021).…”

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Magnetic concentration route for recovering pellet feed fines stored in a mining dam

Gomes

Papini

2022

REM, Int. Eng. J.

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The greatest and noblest challenge of mining engineering for the present and the future of iron ore treatment could be considered as the pursuit of optimizing the use of mineral resources. The use of mining tailings, in the mineral sector itself, or in another industrial branch, meets the needs of circular economy as it increases the useful service life of this material. In order to investigate this scenario, a technological characterization of a sample from a tailings dam was carried out along with magnetic concentration tests in a Wet High-Intensity Magnetic Separator (WHIMS) to propose a possible concentration route. In relation to the characterization itself, the results demonstrated a relative density of 3.04 x 10 3 Kg/m 3 and an average superficial specific area of 3.75 cm³/g. The granulometric analysis classified the material as fine, with d 90 of 0.110 mm and d 50 ≅ 0.049 mm. Quartz, hematite, goethite, kaolinite and manganese oxide were identified in the sample. The test which presented the best results (66.83% Fe and 1.74% SiO 2 ) consisted of the Rougher, Cleaner and Recleaner phases, using a 1.5 mm grooved GAP matrix, a 7,000 Gauss magnetic field, 30% solids, and water pressure at 0.5 kgf/cm 2 (49.0 x 10 3 Pa). Finally, the conclusive results indicate that the studied material can be concentrated through magnetic concentration, keeping in mind the specifications concerning the pellet feed fines commercial product. Besides the financial gain, the activity prolongs the durability of the tailings dam and reduces the environmental impacts associated with these structures.

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Analysis of quartz floatability using design of experiments

Cited by 8 publications

References 9 publications

Collector mixtures and their synergistic effect on quartz floatability

Collector mixtures and their synergistic effect on quartz floatability

Optimization of Process Parameters for Obtaining Polyethersulfone/Additives Membranes

Magnetic concentration route for recovering pellet feed fines stored in a mining dam

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