Understanding the effect of sulphate in mining-process water on sulphide flotation

Sinche-Gonzalez, Maria; Fornasiero, Daniel

doi:10.1016/j.mineng.2021.106865

Cited by 20 publications

(8 citation statements)

References 34 publications

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“…Chalcopyrite is the least affected mineral by water chemistry and flotation. Gonzalo and Forsenario [29] show that sulfate addition has a very small effect on the chalcopyrite flotation rate and recovery. On the other hand, galena and the secondary copper minerals are adversely affected by the presence of tetrathionate, sulfate ions and high temperature, due to probably higher rate of surface oxidation of these minerals.…”

Section: Introductionmentioning

confidence: 98%

The Impact of Pulp Temperature on the Water Chemistry and Flotation Performance

Bicak,

Cakir,

Ozcelik

et al. 2023

Preprint

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: Flotation performance in plants can significantly be affected by seasonal variations in different parts of the world. This is generally attributed to the changes in water temperature and pulp temperature in flotation plants, type and concentration of dissolved ions in process water. Extreme temperature conditions may be the major factor affecting flotation performance and mask the influence of water chemistry. Therefore, the interactive effects of the temperature and water chemistry should be taken into consideration, particularly for mine sites experiencing extreme temperature conditions. In this paper, effects of temperature, sulphate (SO42-), thiosulphate (S2O32-) and calcium (Ca2+) ions on the flotation performance of a Cu-Pb-Zn complex sulfide ore were investigated using a statistical experimental design and modelling approach. Batch scale kinetic flotation tests were conducted using the sequential flotation flowsheet of a bulk Cu-Pb flotation stage followed by a zinc rougher flotation stage. The results of the zinc flotation section were used for the statistical evaluation since the zinc concentrate was the product with an economic value for the mine. The results were evaluated using ANOVA analysis and regression analysis to determine the significant parameters and derive individual regression models for each flotation response with Design Expert software version 6.0.8. Individual regression models were developed using the significant main effects and their interactions for each flotation response. Then, the models were used to determine the concentration of the dissolved ions and pulp temperature required to achieve the maximum zinc recovery, maximum zinc grade or the optimum zinc grade and recovery. The details of statistical experimental design, discussions on the effects of the experimental factors and their interactions on the flotation performance and development of regression models are discussed in this paper.

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Section: Introductionmentioning

confidence: 98%

The Impact of Pulp Temperature on the Water Chemistry and Flotation Performance

Bicak,

Cakir,

Ozcelik

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Chalcopyrite is the least affected mineral by water chemistry and flotation. Gonzalo and Forsenario [23,24] show that sulfate addition has a very small effect on the chalcopyrite flotation rate and recovery. On the other hand, galena and the secondary copper minerals are adversely affected by the presence of tetrathionate, sulfate ions and high temperature, due to probably higher rate of surface oxidation of these minerals.…”

Section: Introductionmentioning

confidence: 99%

The Impact of Pulp Temperature on the Flotation Performance of Copper-Lead-Zinc Sulphide Ore

Bicak,

Cakir,

Ozcelik

et al. 2023

Minerals

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Flotation performance can significantly be affected by seasonal variations due to the changes in water temperature and pulp temperature, type and concentration of dissolved ions in process water. Extreme temperature conditions could be the major factor affecting flotation performance and mask the influence of water chemistry. Therefore, the interactive effects of the temperature and water chemistry should be taken into consideration, particularly for mine sites experiencing extreme temperature conditions. In this paper, effects of temperature, sulphate (SO42−), thiosulphate (S2O32−) and calcium (Ca2+) ions on the flotation performance of a Cu-Pb-Zn complex sulfide ore were investigated using a statistical experimental design and modelling approach. The results were evaluated using ANOVA and regression analysis to determine the significant parameters and derive individual regression models for each flotation response using Design Expert software version 6.0.8. Individual regression models were developed for mass pull, water recovery, grade and recovery of the sulfide minerals using the statistically significant main effects and their interactions. The models were used to determine the concentration of the dissolved ions and pulp temperature required to achieve the maximum zinc recovery, maximum zinc grade or the optimum zinc grade and recovery. The results showed that the water chemistry (i.e., the concentrations of Ca2+, SO42− and S2O32−) affected the flotation performance significantly at low temperature (25 °C). At high pulp temperature (60 °C), however, the temperature was the dominant parameter and masked the effects of water chemistry. Details of the statistical experimental design, discussions of the effects of experimental factors and their interactions on flotation performance, and the development of regression models are presented in this paper.

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“…Los estudios de plantas de procesamiento de minerales de sulfuros muestran que las concentraciones típicas de Mg están alrededor de las 50 ppm [5]. Así mismo, se reportan concentraciones típicas de calcio en el orden de 500 a 650 ppm [6,7].…”

Section: Introductionunclassified

Remoción de los iones Ca2+ y Mg2+ de las aguas de flotación de sulfuros complejos mediante la adición de carbonato de sodio

Ojeda-Villegas

Uribe‐Salas

2023

Epistemus

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Los iones Ca2+ y Mg2+ se encuentran presentes en las aguas del proceso de flotación de sulfuros, lo que afecta negativamente su flotabilidad y el grado de los concentrados finales obtenidos. Recientemente se ha reportado que su remoción mediante la adición de carbonato de sodio (Na2CO3) tiene un efecto benéfico en la flotabilidad, aunque las razones de este comportamiento aún no se conocen con detalle. Este documento presenta los resultados de un estudio diseñado para investigar el mecanismo de reacción entre iones metal-carbonato. Los resultados demuestran que la adición de Na2CO3 a una solución saturada de yeso (0.016 mol/L) conteniendo 50 ppm de Mg(II), promueve la precipitación del ión Ca2+, como calcita y vaterita. El modelo cinético propuesto para describir la cinética de reacción sugiere que se trata de una cinética de segundo orden.

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Understanding the effect of sulphate in mining-process water on sulphide flotation

Cited by 20 publications

References 34 publications

The Impact of Pulp Temperature on the Water Chemistry and Flotation Performance

The Impact of Pulp Temperature on the Water Chemistry and Flotation Performance

The Impact of Pulp Temperature on the Flotation Performance of Copper-Lead-Zinc Sulphide Ore

Remoción de los iones Ca2+ y Mg2+ de las aguas de flotación de sulfuros complejos mediante la adición de carbonato de sodio

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