Effects of particle size on flotation performance in the separation of copper, gold and lead

Ran, Jincheng; Qiu, Xianyang; Hu, Zhen; Liu, Quanjun; Song, Baoxu; Yao, Yanqing

doi:10.1016/j.powtec.2018.12.045

Cited by 35 publications

(9 citation statements)

References 39 publications

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“…This indicates that the size of the gangue particles has a strong effect on the recovery of the valuable ones. Ran et al (2019) also performed experiments using a multi-species mineral system. These flotation experiments investigated the effect of particle size on flotation performance for the separation of copper, gold and lead.…”

Section: Fine Particle Flotationmentioning

confidence: 99%

The link between particle size and froth stability - Implications for reprocessing of flotation tailings

Mackay

Videla

Brito-Parada

2020

Journal of Cleaner Production

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Historic tailings dams can often be considered as valuable mineral reserves due to the declining head grades of primary deposits. The reprocessing of such material is of great interest to the minerals processing industry, not only from an economic point of view, but also from an environmental one. However, tailings material is generally comprised of fine particles, which poses a challenge for its reprocessing using froth flotation due to reduced recoveries of these particle sizes. In addition, there is some debate as to the effect that these fine particles have on the froth stability, which in turn is linked to mineral recovery.In this work, air recovery was used as a measure of froth stability to determine the flotation response of a copper tailings ore to changes in particle size distribution and superficial gas velocity. The system exhibited a maximum in air recovery, which correlates well with the local peak in dynamic froth stability presented in previous work. This maximum in froth stability is also shown to correspond to an improvement in flotation performance, thus highlighting the importance of considering the link between particle size, air rate and froth stability when determining the flotation strategy for tailings reprocessing. The results are discussed in terms of the implications for the reprocessing plant from where the ore samples were obtained and, more generally, for the efficient flotation reprocessing of tailings.

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Section: Fine Particle Flotationmentioning

confidence: 99%

The link between particle size and froth stability - Implications for reprocessing of flotation tailings

Mackay

Videla

Brito-Parada

2020

Journal of Cleaner Production

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“…The sample received is a bit coarse and milling to finer sizes prior to flotation is required. The coarse particles present the greatest flotation rate and lowest recovery and separation efficiency [8]. The XRF was conducted to determine the elemental composition of the as received sample and the results are shown in Table 1.…”

Section: Particle Size Distribution Of the As Received Mg (1-4) Samplementioning

confidence: 99%

Investigating The Mineralogy Of An Oxidised South African PGM Ore From The Western Limb

Mailula¹,

Nheta²,

Bhondayi³

2022

Proceedings of the 8th World Congress on Mechanical, Chemical, and Material Engineering

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In this paper, the mineralogical characteristics of a weathered Platinum Group Minerals (PGMs) ore of Middle Group (1-4) was investigated with the main objective of proposing a processing route for the ore. The oxidised PGM ore supplied was 60% passing 710µm and the major elements present were:Cr(27,03%), Fe(20,57%), Si(5,417%), Ca(5,43%), Mg(3,87) and Al(2,17 %). The ore was analysed for 4Es (Pt, Pd, Rh and Au) content using fire assaying followed by inductively coupled plasma -optical emission spectrometry. The results indicated that the grades of the 4Es were as follows: Au (0.04ppm), Pd (0.94ppm), Pt (1.98) and Rh (0.32). The Pd content is much lower than that of Pt, indicating Pd remobilization from the weathered zone to the lower zone which reduces the flotation efficiency by changing Pt:Pd ratio. The X-ray diffraction results indicated that the oxidised PGM ore sample was dominated by chromite, quartz, iron oxide minerals such magnesium/ferric iron, trevorite (nickel iron oxide) and secondary minerals such as covellite which is generally found in zones of secondary enrichment (supergene) of copper sulphide deposits. More mineralogical investigation is recommended such as Mineral Liberation Analysis in order to investigate the PGM's grain size distribution, liberation and their associations.

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“…One of the main parameters is the recovery size before flotation [5,6]. The reagent mode also influences the efficiency of the process, the degree of pulp aeration, flotation time, pH of the medium, conditioning, pulp density [7,8], and many others [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Study of gold ore processing by flotation methods

Федотов

Бурдонов

Novikov

et al. 2022

jour

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The article deals with the studies of gold-bearing ore benefication by flotation methods. The object of the study is a low-sulfide gold-quartz type of ores with the following petrographic composition: quartz – 90 %, quartz-chlorite schists – 10 %. The ore from this deposit consists of the weathering crust rocks including iron-mica rocks with veins and spots of granoblastic quartz. The purpose of the research is to develop an optimal flotation regime for obtaining sulfide gold-bearing concentrate. The influence of ore size, reagent mode, flotation redistribution structure, and flotation time on operations was recorded during the experiment. The paper presents the results of studying the chemical composition of the ore by the method of silicate and optical emission analysis. The flotation process used butyl potassium xanthate as a collector and a combination of pine essential oils as a foaming agent. The Hancock concentration efficiency criterion was determined based on a series of experiments. The following technological indicators of ore processing were identified: gravity concentrate with the gold grade of 1165 g/t with the yield of 0.3 % and the recovery of 73.74 %; flotation concentrate (after purification II) with the gold grade of 68.9 g/t with the yield of 1.52 % and a recovery of 22.05 %. Its silver content was 15.9 g/t. The total gold recovery was 95.79 %, with the yield of 1.82 % and the gold grade of 249.9 g/t. The gold grade in the flotation tailings was 0.19 g/t.

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Effects of particle size on flotation performance in the separation of copper, gold and lead

Cited by 35 publications

References 39 publications

The link between particle size and froth stability - Implications for reprocessing of flotation tailings

The link between particle size and froth stability - Implications for reprocessing of flotation tailings

Investigating The Mineralogy Of An Oxidised South African PGM Ore From The Western Limb

Study of gold ore processing by flotation methods

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