Optimisation of gold recovery by selective gold flotation for copper-gold-pyrite ores

Forrest, K; Yan, D.S.; Dunne, R.

doi:10.1016/s0892-6875(00)00178-3

Cited by 50 publications

(17 citation statements)

References 7 publications

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“…3). Total Sulphur content has been increased to about 19 % S and 84 % yield (Table 4), similar to Forrest et al (2001), which shows the importance of not overdosing collector. Fig.…”

Section: Units Bulk Flotation Without Microwave Pretreatmentsupporting

confidence: 67%

Modeling and box-Behnken design optimization of microwave pretreatment of sulphidic gold flotation tailing

Benli¹,

Baştürkçü²

2022

Physicochem. Probl. Miner. Process.

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As raw minerals become scarcer every passing day, the need for the recovery of mine tailings becomes essential. This research highlights the use of microwave energy as a green alternative to otherwise environmentally harmful methods of ore tailing recovery. The obtained results indicate that a 1.4 ppm Au and 3.5 % S sample floated with Aeroflot 208 and Aerophine 3418A increased the concentration of tailings over 18 % S and 4 ppm, Au, for recovery yield, resulting in 84 % and 80 % recovery, respectively. After microwave irradiation, 90 % of sulphur removal was reached under the optimum conditions of 50 minutes of irradiation using 1000 W for 4 g of the sample. Overall with 96. 74 % correlation of the quadratic model using the Box-Behnken design and expressed coefficient R2 regression the model was proven to be suitable for heating and roasting processes of gold-bearing tailings.

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“…3). Total Sulphur content has been increased to about 19 % S and 84 % yield (Table 4), similar to Forrest et al (2001), which shows the importance of not overdosing collector. Fig.…”

Section: Units Bulk Flotation Without Microwave Pretreatmentsupporting

confidence: 67%

Modeling and box-Behnken design optimization of microwave pretreatment of sulphidic gold flotation tailing

Benli¹,

Baştürkçü²

2022

Physicochem. Probl. Miner. Process.

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“…Designations of the combinations of experimental conditions are summarized in Table 2. Compared with natural mineral investigations with values such as 1200 rpm impeller speed and 1.8-5.4 l/min and higher aeration (Forrest et al, 2001;Lins and Adamian, 1993;Miller et al, 2006), the low regimes chosen for these parameters is based on initial microflotation and the Leeds cell exploratory trials. Above the range of 500 rpm agitation and 1000 ml/min aeration, the turbulence reached the pulp surface.…”

Section: Flotation Investigationmentioning

confidence: 99%

Investigation of froth flotation for beneficiation of printed circuit board comminution fines

Ogunniyi

Vermaak

2009

Minerals Engineering

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a b s t r a c tFroth flotation for beneficiation of printed circuit board comminution fines was investigated in this work, via reverse flotation under a scheme described as natural hydrophobic response. With no reagents, the scheme employed variation of kinetic parameters of airflow rate and impeller speed to optimize metallic enrichment of the sink. The impeller energy and aeration rate required to keep the pulp in suspension and avoid excessive turbulence were found to be much lower compared with conventional mineral flotation. The natural hydrophobic response was found to exist, and stable froth was observed even without the use of any frother. It was submitted that the dynamic froth stability observed is due to fine particle stabilization. Mass pulls obtained were high and cumulative mass pull under the varying kinetic regimes were found to fit very well to the general first order kinetics. The extents of fit, the sink enrichment and the recovery in respect of metallic values were assessed to evaluate the beneficiation performance. Many of the metallic elements were found to concentrate into the sink, while some prefer the froth phase. Notably, gold and palladium were among the best recovered to the sink; with about 64% recovery at enrichment ratio of 3.1 (676 ppm actual assay) for Au. The flotation scheme proved effective for PCB comminution fines, and performance improvement also looks very feasible.

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“…This combination gives satisfactory results in respect of copper concentrate grade and copper and gold recoveries. Recent laboratory testing on a copperegold ore containing pyrite showed that Aerofloat 7249 achieved the highest gold recovery (Forrest et al, 2001). Dithiophosphate collectors are found to be more selective against pyrite and better gold collectors than xanthate (Bulatovic, 1997).…”

Section: Flotation Of Copperegold Oresmentioning

confidence: 98%

Flotation of Gold and Gold-Bearing Ores

Dunne

2016

Gold Ore Processing

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Optimisation of gold recovery by selective gold flotation for copper-gold-pyrite ores

Cited by 50 publications

References 7 publications

Modeling and box-Behnken design optimization of microwave pretreatment of sulphidic gold flotation tailing

Modeling and box-Behnken design optimization of microwave pretreatment of sulphidic gold flotation tailing

Investigation of froth flotation for beneficiation of printed circuit board comminution fines

Flotation of Gold and Gold-Bearing Ores

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