Effects of flotation operational parameters on froth stability and froth recovery

Ostadrahimi, Mahdi; Farrokhpay, Saeed; Gharibi, Khodakaram; Dehghani, Ali; Aghajanloo, M.

doi:10.17159/2411-9717/1272/2021

Cited by 7 publications

(2 citation statements)

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“…It was also reported that the amount of collector affects the froth stability. In recent work, the researchers [31] examined the separation of particles during bubble coalescence, and they found that increasing the collector dosage increases the rate of froth formation, reduces the bubble coalescence, and, thus, the froth stability.…”

Section: Bench Scale Flotation Testsmentioning

confidence: 99%

Reduction of Amine Consumption in Iron Ore Flotation through Direct Reuse of Process Water on Bench Scale

Monte,

Santos,

Veneu

et al. 2024

Preprint

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The present work investigated the direct reuse effect of process water containing residual amine from tailings and concentrate pulps on the performance of the cationic reverse flotation of iron ore. Iron ore sample collected after the desliming operation in Conceição Industrial Unit (Minas Gerais) was used for the bench scale flotation studies. The experiments used water recirculation for five cycles and amine to achieve the optimal flotation dosage, considering the residual amine contained in process water and according to the amine dosage used in the Conceição industrial circuit. The average recovery of amine in the aqueous phase (process water) was 46%; consequently, the consumption of the new amine fed into the circuit was reduced. The experiment results showed that the direct reuse of process water and reduction in new amine addition could be performed without negatively affecting the quality of the final iron ore concentrate (68% Fe and 1.3% SiO2). According to the results obtained in this work, process water containing residual amine can be reused in the iron ore flotation without loss of concentrate quality and flotation performance. The chemical composition of the water process is essential, and the residual amine in the aqueous phase must be controlled frequently.

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Section: Bench Scale Flotation Testsmentioning

confidence: 99%

Reduction of Amine Consumption in Iron Ore Flotation through Direct Reuse of Process Water on Bench Scale

Monte,

Santos,

Veneu

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…This analysis meets a particular condition. It illustrates estimation-related problems because the parameters must be adjusted to a specific reference, considering the flotation process variability or adding a third pressure measurement point located in the froth zone [31][32][33][34][35][36].…”

mentioning

confidence: 99%

Online Superficial Gas Velocity, Holdup, and Froth Depth Sensor for Flotation Cells

et al. 2022

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In flotation process, the efficiency and selectivity depend on mineralogy, particle size distribution and liberation, reagents added, mixing, and particle coverage. However, the kinetics of particle recovery is highly dependent on cell hydrodynamic and circuit configuration and operational strategy. Controlling froth depth and gas flow rate, measured as superficial gas velocity, is a straightforward alternative related to kinetics in the froth and collection zones. However, these parameters are not measured accurately. Froth depth measurement is based on a floating device coupled with a sonic sensor; this configuration presents hysteresis and deviation due to variation in the gas holdup and pulp density. In self-aspirated machines, there is no technology to measure gas velocity. To address this problem, the intelligent online gas dispersion sensor based on two concentric HDPE cylindres is proposed. The intelligent online gas dispersion sensor is based on two concentric HDPE cylinders. The methodology improves the accuracy of gas velocity calculation with a new algorithm. Froth depth measurement is based on two pressure transducers, reducing the uncertainty of the floating sonic sensor to 1 cm. Pulp bulk density is directly measured, and gas holdup can be estimated. Experimental results and industrial device validation indicate that the new intelligent system can measure superficial gas velocity (Jg) online and self-calibrate, with a 2% error, the froth depth error being ±1 cm. Therefore, a multiparameter sensor for measuring gas dispersion in industrial flotation cells was experimentally designed and validated in an industrial environment (TRL 8). In this context, the proposed online gas dispersion sensor emerges as a robust technology to improve the operation of the flotation process.

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Novel TiO2 nanoparticle-based sensor for xanthate quantification in mineral flotation samples

Vilasó-Cadre,

Reyes-Domínguez,

Thangarasu

et al. 2024

Electrochimica Acta

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Effects of flotation operational parameters on froth stability and froth recovery

Cited by 7 publications

References 0 publications

Reduction of Amine Consumption in Iron Ore Flotation through Direct Reuse of Process Water on Bench Scale

Reduction of Amine Consumption in Iron Ore Flotation through Direct Reuse of Process Water on Bench Scale

Online Superficial Gas Velocity, Holdup, and Froth Depth Sensor for Flotation Cells

Novel TiO2 nanoparticle-based sensor for xanthate quantification in mineral flotation samples

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