Optimization of operating parameters for coarse sphalerite flotation in the HydroFloat fluidised-bed separator

Awatey, Bellson; Thanasekaran, Homie; Kohmuench, J. N.; Skinner, William; Zanin, Massimiliano

doi:10.1016/j.mineng.2013.06.015

Cited by 50 publications

(17 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…2(A) is modified after that which was previously presented in Awatey et al [2]. In the current set-up the entire mass of sample undergoes primary grinding prior to flotation, unlike the previous set-up where the flotation feed was a crushed product.…”

Section: Methodsmentioning

confidence: 99%

Incorporating fluidised-bed flotation into a conventional flotation flowsheet: A focus on energy implications of coarse particle recovery

2015

Self Cite

View full text Add to dashboard Cite

Section: Methodsmentioning

confidence: 99%

Incorporating fluidised-bed flotation into a conventional flotation flowsheet: A focus on energy implications of coarse particle recovery

2015

Self Cite

View full text Add to dashboard Cite

“…obtained with SP/SP SELFRAG treatment, which used more than double the energy of the mechanical comminution, it is evident that SELFRAG is a poor breakage device. These results also showed that the hybrid (SELFRAG treatment with mechanical grinding) treatment process was more energy efficient than the pure electrical comminution process, which consumed on average 2 to 3 times more than conventional mechanical comminution (Andres et al, 2001a;b).…”

Section: Specific Energy Consumptionmentioning

confidence: 76%

“…This would remove the need for shaking tables as a preconcentration stage, thus reducing the time and cost of the process. Andres et al (2001a;b) investigated the effects of HVP treatment, using a laboratory device, on five different ores: three oxides ores (two containing Pt group metals and one containing hematite) and two complex sulphide ores (containing sulphides of Cu and sulphides of Ni). The results showed that liberation improved in the ores containing hematite, Pt group metals, complex Cu sulphides and pentlandite with fewer fines generated.…”

Section: Effect Of High Voltage Pulse Treatment On Separation Recoveriesmentioning

confidence: 99%

“…For the platinum ore, electrical comminution consumed 90 kWh/t, while mechanical comminution consumed only 50 kWh/t, to produce a -0.300 mm product. This is one of the major limitations of electrical comminution, but Andres et al (2001a;b) reasoned that there would be a decrease in concentrate mass going to the smelter, because of the higher grade. This in turn would lead to an overall savings in energy.…”

Section: Effect Of High Voltage Pulse Treatment On Separation Recoveriesmentioning

confidence: 99%

“…Improvements in mineral liberation with high voltage pulse treatment would make it possible to float coarser particles, but new techniques such as HydroFloat or Jameson cells (Awatey et al, 2013;Pokrajcic et al, 2005) would be required for particles exceeding 200 µm.…”

Section: Froth Flotationmentioning

confidence: 99%

See 2 more Smart Citations

The effects of high voltage pulse treatment on ore characteristics and separation performances of a porphyry copper ore

Parker¹

View full text Add to dashboard Cite

Technological advancement in large scale mining has changed little in the past 20 years.Increasing global energy demands and continuously decreasing ore grades are putting pressure on the mining industry to develop new, energy efficient technologies. Comminution has the highest energy consumption across the mining industry, and its energy demands continue to increase as finer grinding is required to liberate the valuable minerals in lower grade ores.Novel devices, such as high voltage pulse devices (HVP), have the potential to reduce the overall energy consumption, as they offer preferential breakage at the mineral grain boundaries. Good liberation occurs in coarser products and gangue can be removed upstream. HVP devices offer the opportunity to replace and change old inefficient comminution circuits or to be strategically incorporated within a current circuit. They also provide an opportunity for improving the downstream separation performances. However, to date, little research has been conducted on the direct effects of HVP treatment on these mineral separation processes.In this thesis the effects of HVP treatment on the characteristics and surface chemistry of a sample of Los Bronces porphyry copper ore were initially investigated to determine the potential for improved separation performance. A commercially available SELFRAG Lab device was used to HVP treat the ore either in batch-mode or using the single-particle/single pulse (SP/SP) method. The results showed that the ore responded well to SELFRAG batch treatment, with improvements seen in the ore's resistance to breakage and mineral liberation. Batch flotation and Wilfley shaking table tests therefore followed, using SELFRAG batch treated and mechanically crushed ore, to determine the differences in the grade-recovery curves. Further froth flotation tests were done using SELFRAG SP/SP treated ore for comparison.Results indicate that SELFRAG batch treatment of Los Bronces ore significantly reduced the ore's resistance to breakage when compared to conventional (mechanical) crushing. However, it consumed 21.8 kWh/t whereas mechanical crushing only consumed 1.5 kWh/t to produce the same extent of breakage. The SELFRAG SP/SP method was developed to reduce the consumed energy so that overall energy savings could be realised. In this method, SELFRAG treatment pre-weakens the particles with little to no breakage, so the JKRBT was used to break the particles ii to -3.35 mm. This method consumed 4.55 kWh/t and the product had the same resistance to breakage as the mechanically crushed product.Mineral liberation results showed that chalcopyrite was more liberated in the SELFRAG batch treated product than in the mechanically crushed product, noticeably in the coarser size fractions.This was confirmed in the preliminary float/sink gravity separation results where improved chalcopyrite recoveries were seen. Although SELFRAG batch treatment improved the valuable mineral liberation, it also led to noticeable surface chemistry changes. The surface chemistry of p...

show abstract

Advanced Techniques on Fine and Coarse Particle Flotation

Şahbaz,

Uçar,

Emer

et al. 2024

Advances in Material Research and Technology

View full text Add to dashboard Cite

Optimization of operating parameters for coarse sphalerite flotation in the HydroFloat fluidised-bed separator

Cited by 50 publications

References 20 publications

Incorporating fluidised-bed flotation into a conventional flotation flowsheet: A focus on energy implications of coarse particle recovery

Incorporating fluidised-bed flotation into a conventional flotation flowsheet: A focus on energy implications of coarse particle recovery

The effects of high voltage pulse treatment on ore characteristics and separation performances of a porphyry copper ore

Advanced Techniques on Fine and Coarse Particle Flotation

Contact Info

Product

Resources

About