Kinetics of calcium minerals flotation from Scheelite-carbonate ores

Шепета, Е. Д.; Саматова, Л. А.; Кондратьев, С. А.

doi:10.1134/s106273914804020x

Cited by 20 publications

(6 citation statements)

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“…Figure 6 indicates the Zeta potential results of scheelite with pH, which shows a good agreement with conventional studies [14,19]. The zeta potentials of scheelite without the collector and depressant are negatively charged over the entire pH range (2)(3)(4)(5)(6)(7)(8)(9)(10)(11), and the zeta potentials are lower negatively when the flotation reagents are added. Since the zeta potentials of scheelite with the collector or with the collector and depressant show similar behaviors over the entire pH range, the addition of depressant does not have a significant effect on the adsorption of the collector on the surface of scheelite.…”

Section: Resultssupporting

confidence: 73%

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Effects of Ferrous Sulfate Addition on the Selective Flotation of Scheelite over Calcite and Fluorite

Jung

Park²,

Yoo

2020

Minerals

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The addition of ferrous sulfate as a depressant for Ca-bearing minerals such as calcite and fluorite during scheelite flotation was investigated to recover scheelite from tungsten mine tailings, using Hallimond-tube flotation tests, zeta-potential measurement and Fourier-transform infrared (FT-IR) analyses. The flotation tests indicate that the selectivity of scheelite recovery was the largest over calcite and fluorite under the following conditions: 0.5 g sample, 50 g/ton AF65, 1 × 10−3 M sodium oleate, 1200 g/ton SF2 (sodium silicate and ferrous sulfate) depressant with the 8:2 ratio of sodium silicate and ferrous sulfate, 50 mL/min air injection rate, 5 min flotation time, and pH 8. The selectivity of scheelite flotation increased when the amount of SF2 depressant addition increased to 1200 g/ton, but it decreased by adding 1400 g/ton SF2, which would result from the precipitation of iron components. In the zeta potential results, the zeta potentials of scheelite with the collector show similar results regardless of the addition of SF2, while the change of zeta potentials of calcite and fluorite by adding NaO collector diminished when SF2 was added. In FT-IR analyses, the spectrum of NaO in scheelite results was observed regardless of the addition of SF2, while the spectra of NaO in calcite and fluorite results disappeared when SF2 was added. These results suggest that the addition of SF2 prevents the adsorption of NaO on the surface of calcite and fluorite. Therefore, the addition of SF2 could enhance the selectivity of scheelite flotation over calcite and fluorite.

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Section: Resultssupporting

confidence: 73%

“…It is known that scheelite can be selectively floated by using fatty acid and a fatty acid derivative as a collector [10,11]. However, since scheelite (CaWO 4 ) contains calcium components, it is closely related to other Ca-bearing minerals such as calcite (CaCO 3 ) and fluorite (CaF 2 ).…”

Section: Introductionmentioning

confidence: 99%

Effects of Ferrous Sulfate Addition on the Selective Flotation of Scheelite over Calcite and Fluorite

Jung

Park²,

Yoo

2020

Minerals

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“…It is one of the strategic metals identified for stockpiling in many countries. Scheelite is the principle mineral of tungsten and usually associated with other calcium-bearing minerals in ore deposits, from which it shall be separated by means of flotation (Hu et al, 2012;Shepeta et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

The flotation separation of scheelite from calcite using acidified sodium silicate as depressant

Feng

Wang

et al. 2015

Minerals Engineering

187

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“…The main tungsten minerals exploited for primary tungsten extraction are scheelite (CaWO 4 ) and wolframite ((Fe,Mn)WO 4 ), which is a member of a solid solution comprised of hubnerite (MnWO 4 ) and ferberite (FeWO 4 ). Approximately two thirds of the world's tungsten reserves consist of skarn deposits [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Modeling the Liberation of Comminuted Scheelite Using Mineralogical Properties

et al. 2019

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In this paper, the modeling of the liberation of scheelite is presented. A pattern of concentration experiments was performed to investigate the scheelite liberation and distribution density calculation procedure. In this work, one sample from a Mittersill tungsten ore was studied. This work describes a method for determining the downstream milling energy requirements for rod mill products based on a Bond mill test performance. The grade distribution of particles at a given size fraction was calculated using a predictive liberation model. The concentration behavior of these particles in size fractions was evaluated using batch concentrate tests. The recovery of particles in size/grade classes, image analysis using mineral liberation analysis (MLA), and function calculations were implemented for the modeling of the liberation. By describing the size, grade, and recovery data of particles in size/grade classes, a technique for the measurement of distribution functions was developed that relates beta distribution, a model for the function based on the incomplete beta function, and a solution to produce liberation modeling. It was shown that the predicted results agreed well with the observed results. With a procedure for measuring the liberation, it was possible to carry out the first experimental measurement of the beta distribution. This liberation/concentrate model has wide potential applications for metallurgy and plant design, where the liberation modeling is to be determined with the distribution density solution to the predictive mineral liberation function equation, which includes the liberation of ore samples and their liberation characteristics.

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Kinetics of calcium minerals flotation from Scheelite-carbonate ores

Cited by 20 publications

References 0 publications

Effects of Ferrous Sulfate Addition on the Selective Flotation of Scheelite over Calcite and Fluorite

Effects of Ferrous Sulfate Addition on the Selective Flotation of Scheelite over Calcite and Fluorite

The flotation separation of scheelite from calcite using acidified sodium silicate as depressant

Modeling the Liberation of Comminuted Scheelite Using Mineralogical Properties

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