Investigation of a Flotation Process with De-Sliming and Attrition to Upgrade and Recover Cu and Mo from a Cu-Mo Flotation Tailing

Rabatho, Jan Pana; Tongamp, William; Shibayama, Atsushi; Takasaki, Yasushi; Nitta, Sachihito; Imai, Tetsuo

doi:10.2320/matertrans.m-m2011803

Cited by 8 publications

(5 citation statements)

References 20 publications

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“…It has significantly contributed to the upgrade of mineral values thus confirming its attractiveness in flowsheet development where slimes impede value upgrades [55]. Elsewhere desliming has been reported to contribute to some value losses [56,57]. In the present study, significant gains in desliming prior to the flotation process were observed as shown in Figure 11.…”

Section: Relevance Of Deslimingsupporting

confidence: 77%

Recovery of Rare Earth Elements Minerals in Complex Low-Grade Saprolite Ore by Froth Flotation

Abaka-Wood

Johnson²,

Addai‐Mensah

et al. 2022

Minerals

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This study presented the first in a series of investigations currently underway to develop efficacious, cost-effective, and benign processing opportunities to produce rare earth elements (REE)–rich concentrate from an Australian complex low–grade saprolite ore [1.14% total rare earth oxides (TREO) grade], which is primarily exploited for its gold and copper values. This work specifically presented a preliminary flotation investigation carried out on the ore using sodium oleate as a collector. The relative effects of pulp pH, desliming, and depressants were investigated to ascertain any chance of recovering and upgrading REE minerals in saprolite ore using three different processing configurations. Based on the experimental results, flotation processes carried out on raw feed allowed the recovery of the majority of REE minerals (>50%), but the process was unselective, where clay and silicate gangue minerals reported into the flotation concentrate along with the REE minerals. However, desliming before flotation in the presence of depressants (starch and sodium silicate) improved REE minerals flotation selectivity, which produced concentrates assaying 5.87% and 4.22% TREO grades, with corresponding recoveries of 45% and 50% at pulp pH 9 and 10.5, respectively. Mineralogical analysis conducted on selected flotation concentrate indicated that silicate and clay gauge minerals were recovered via the synergistic act of surface activation and entrainment due to their fine to ultrafine nature. A comparison of all the test results revealed a haphazard grade–recovery relationship suggesting that there is an opportunity to further maximize both REE recovery and grade through further flotation studies where other process parameters may be investigated and optimized. The prospect of using magnetic separation has also been suggested.

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Section: Relevance Of Deslimingsupporting

confidence: 77%

Recovery of Rare Earth Elements Minerals in Complex Low-Grade Saprolite Ore by Froth Flotation

Abaka-Wood

Johnson²,

Addai‐Mensah

et al. 2022

Minerals

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“…The grade of iron decreased with increasing the pH of slurry from pH 4 to pH 6 and increased further with increasing the pH of the slurry. The results obtained are verified that high pH value of the slurry has a positive effect on copper beneficiation due to the depression effect of pyrite (FeS 2 ) and gangue minerals including [21][22][23] . Result showed that collectorless flotation is possible to recover copper from the low-grade copper ore containing silicate.…”

Section: Effect Of Slurry Phsupporting

confidence: 54%

Copper Recovery from Silicate-Containing Low-Grade Copper Ore Using Flotation Followed by High-Pressure Oxidative Leaching

Han

Altansukh

Haga

et al. 2017

Resources Processing

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In this paper, we present the results for recovery of copper from silicate-containing low-grade copper ore using flotation followed by atmospheric and high-pressure oxidative leaching. The effects of various flotation parameters, such as flotation time, PAX dosage, slurry pH and air injection rate on beneficiation of copper from the low-grade copper ore were studied. The recovery of copper reached 93.1% and the grade of copper improved to 18.2 mass% from 0.4 mass% under collector-less optimum flotation conditions. The enrichment ratio of copper in the concentrate was 45. The copper concentrate obtained from flotation of the low-grade copper ore was treated by atmospheric leaching and high-pressure oxidative leaching processes. A maximum recovery (>93.0%) of copper was obtained by high-pressure oxidative leaching in the water, whereas the copper recovery was lower than 12% in the sulfuric acid solution under atmospheric leaching conditions. The copper concentration in a pregnant leach solution enriched up to 15.0 g/L under the optimized leaching conditions. The effect of impurity such as iron in the sample on the froth flotation and both leaching processes is also considered. A process flow for the recovery of copper from silicate-containing low-grade copper ores is proposed as a result of these studies.

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“…The benefits of desliming described in this report are supported by similar works done elsewhere. For instance, in the work conducted by authors [43], desliming was performed with the tailings from the first stage of the multi-stage flotation system using a 44 µm screen to remove the −44 µm slime fraction. The flotation was continued from second to fourth stage using the +44 µm fraction.…”

Section: Flotation Tests On Deslimed Materialsmentioning

confidence: 99%

Effect of Desliming on Flotation Response of Kansanshi Mixed Copper Ore

Phiri¹,

Tepa²,

Nyati³

2019

JMMCE

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The Kansanshi mixed copper sulfide-oxide ore contains significant proportions of fine material manifesting in a variety of processing challenges. This paper presents the work which was carried out to evaluate the efficacy of desliming in improving the flotation response of the ore. Two modes of desliming were investigated, namely; sieving and elutriation after which the deslimed material was subjected to Kansanshi standard laboratory flotation conditions. The minimum copper feed grade for the mixed copper ore was 0.5% Total Copper (TCu). The outcome of this work has shown that desliming improves the flotation response of the Kansanshi mixed copper ore. At a rougher copper concentrate grade of 8%, copper metal recoveries obtained with desliming were in excess of 70% compared to 58% achieved with baseline tests without desliming. It was further observed that desliming resulted in improved flotation rates for the sulfide minerals. For a flotation time of 3 minutes, recoveries of 69% and 74% were obtained with elutriation and sieving respectively compared to 58% recovery for baseline tests. From the same results it was also evident that, of the two modes of desliming investigated, sieving yielded better performance than elutriation.

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Investigation of a Flotation Process with De-Sliming and Attrition to Upgrade and Recover Cu and Mo from a Cu-Mo Flotation Tailing

Cited by 8 publications

References 20 publications

Recovery of Rare Earth Elements Minerals in Complex Low-Grade Saprolite Ore by Froth Flotation

Recovery of Rare Earth Elements Minerals in Complex Low-Grade Saprolite Ore by Froth Flotation

Copper Recovery from Silicate-Containing Low-Grade Copper Ore Using Flotation Followed by High-Pressure Oxidative Leaching

Effect of Desliming on Flotation Response of Kansanshi Mixed Copper Ore

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