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Abstract. Chitosan was exploited as a selective depressant in the differential PbZn sulfide flotation at pH 4 on artificial galena and sphalerite mixtures. The mixtures were prepared in two ...
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Differential sorption behaviors of collectors at mineral/water interface play a crucial role in mineral flotation by selectively strengthening the hydrophobicity of the target minerals. To efficiently recover of magnesite from quartz, pentaethoxylated laurylamine (PEOLA) was introduced as a low-cost and high-selectivity collector to replace …
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Microbially induced mineral beneficiation involves three strategies, namely, selective bioleaching of the undesirable mineral from an ore or concentrate, selective flotation …
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The selective collecting performance and differential adsorption mechanisms of DEOSA for both hematite and quartz were studied by flotation experiments and surface analysis.
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In this study, the collection capacity and separation performance of PEOLA were investigated and evaluated through flotation tests. Furthermore, the selective collection mechanisms of PEOLA toward both magnesite and quartz were revealed via surface detection experiments, involving Fourier transform infrared (FT-IR) spectroscopy, …
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Differential flotation of pyrite and Arsenopyrite: Effect of pulp aeration and the critical importance of collector concentration. ... (Zn-S) selective flotation better, favor the beneficiation of high-sulfur polymetallic sulfide ores in study or practice, and provide important inspirations for the theoretical research or practical utilization ...
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Carboxymethyl Chitosan as a Selective Depressant in Differential Flotation of Galena and Chalcopyrite by ... but it was not the reason for N-CMC's selective depression of chalcopyrite. Mineral surface cleaning tests explained the good flotation result in the absence of any chelating reagents, such as EDTA, since N-CMC also possesses the ...
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@article{Yang2021SelectiveCA, title={Selective collection and differential adsorption of pentaethoxylated laurylamine for the flotation recovery of magnesite from quartz}, author={Bin Yang and Wan-zhong Yin and Jin Yao and Zhanglei Zhu and Huiming Sun and Keqiang Chen and Shaohang Cao}, journal={Colloids and Surfaces A: …
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For the micro-flotation test of mixed minerals, the flotation was performed as the procedures mentioned above. The flotation products were assayed for Zn and Pb and the recovery was calculated. Each flotation test was performed at least three times, the mean vale was reported in this work. 2.3. Zeta potential measurement
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Flotation is the process of separation of beneficial minerals from a mixture by creating froth on which minerals separate out. This is a method of mineral processing in which different minerals are separated selectively. The ores containing multiple metals, such as lead, copper and zinc, can be selectively extracted by using froth floatation.
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The selective flotation of arsenopyrite from pyrite can be realized by adding a magnesium-ammonium mixture depressant [26]. As we all know, arsenic is a highly toxic substance that causes great ...
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Huang P, Cao M, Liu Q (2012) Using chitosan as a selective depressant in the differential flotation of Cu–Pb sulfides. Int J Miner Process 106–109:8–15. Article Google Scholar Huang P, Cao M, Liu Q (2012) Adsorption of chitosan on chalcopyrite and galena from aqueous suspensions. Coll Surf Physicochem Eng Asp 409:167–175
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Key Points. Selective media generally selects for the growth of a desired organism, stopping the growth of or altogether killing non-desired organisms. Differential media takes advantage of biochemical properties of target organisms, often leading to a visible change when growth of target organisms are present.
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Differential flotation. Sequential flotation. While all flotation processes are selective or differential in that one mineral or group of minerals is floated away from …
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Zinc sulfate is a well-known selective depressant for zinc sulfide minerals such as sphalerite during the flotation of complex Cu–Pb–Zn sulfide ores. It deactivates sphalerite flotation by substituting the activating metal ions, and depresses sphalerite flotation by forming hydrophilic coatings of zinc hydroxyl species on sphalerite surfaces.
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The conclusion that when SGX was used as selective depressant of pyrite with SBX as collector, the optimal differential flotation of chalcopyrite from pyrite gave a separation with approximately 90% recovery of chalcopyrite and less than 25% recovery of pyrite at a mild alkaline pH range, by which the flotation separation of chalcopyrite and ...
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A. W. Fahrenwald (1921) tried to draw a sharp line between the terms "selective", "differential" and "preferential" and confirmed basically Wright's understanding. Weinig and Palmer (1926) using ...
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Differential adsorption of surfactants (e.g., collectors and depressants) on the minerals plays a key role in mineral flotation through selectively altering the surface wettability of minerals. In this study, to improve the removal efficiency of dolomite from apatite by direct flotation, hydrolytic polymaleic anhydride (HPMA) was introduced as ...
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Pyrite is a gangue mineral widely associated with valuable minerals. It is problematic to deal with in differential flotation because it easily reports to flotation concentrates. Pyrite may float due to natural or self-induced hydrophobicity or collector-induced hydrophobicity. Its flotation can also be enhanced by the activation of copper or lead ions emanating from …
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Carboxymethyl Chitosan as a Selective Depressant in Differential Flotation of Galena and Chalcopyrite. Toxic inorganic depressants are routinely used in the differential flotation of polymetallic sulfide ores and it is desirable that they be replaced with environmentally benign chemicals. Chitosan, as a natural and non-toxic polymer, has …
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Generally, differential flotation of pyrite and arsenopyrite was defined by collector type, hydrogen peroxide addition, pulp pH, collector concentration and mineral surface oxidation species. Flotation of pyrite and arsenopyrite decreased with increase in pulp pH irrespective of the collector type used, owing to an increase in surface oxidation ...
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Froth flotation is a physicochemical process that is used to separate fine mineral particles from aqueous suspensions by selective attachment of some types of minerals to air bubbles. Froth flotation is the most important mineral processing technology for the production of valuable mineral concentrates from which metals and minerals are …
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Differential flotation of the pyrite–arsenopyrite mixture was carried out by interacting 0.5 g each of the two different minerals, either together or separately, with cells and reagents. ... Selective flocculation studies were performed on 1:1 mineral mixtures as explained in Section 2.8. 50-ml sample of the mineral slurry containing 0.5 g of ...
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DOI: 10.1016/J.MINPRO.2012.01.001 Corpus ID: 97341704; Using chitosan as a selective depressant in the differential flotation of Cu–Pb sulfides @article{Huang2012UsingCA, title={Using chitosan as a selective depressant in the differential flotation of Cu–Pb sulfides}, author={Peng Huang and Mingli Cao and Qi …
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Zinc sulfate is a well-known selective depressant for zinc sulfide minerals such as sphalerite during the flotation of complex Cu–Pb–Zn sulfide ores.It deactivates sphalerite flotation by substituting the activating metal ions, and depresses sphalerite flotation by forming hydrophilic coatings of zinc hydroxyl species on sphalerite surfaces. …
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Toxic inorganic depressants are routinely used in the differential flotation of polymetallic sulfide ores and it is desirable that they be replaced with environmentally benign chemicals. Chitosan, as a natural and non-toxic polymer, has been proven to be an efficient depressant for copper sulfide (e.g., chalcopyrite) while allowing lead sulfide (e.g., galena) to be …
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It is worth noting that thionocarbamate used for the flotation of copper-activated pyrite yields abysmal flotation performance and has thus been extensively used for the selective flotation of copper-bearing sulphide minerals from pyrite [16]. This study, therefore, seeks to address the following research questions: a.
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The single mineral flotation tests show that both pyrite and galena were depressed by chitosan in acidic solutions to some degree. However, in the mineral mixture flotation, galena was floated with a recovery of 68% at pH 4 and pyrite was depressed with a recovery of 23%. The flotation results indicated that competitive adsorption of chitosan ...
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Froth flotation is a highly versatile method for physically separating particles based on differences in the ability of air bubbles to selectively adhere to specific mineral surfaces …
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Flotation recovery of pyrite and arsenopyrite at pH 6.4 and 120 g/t: A) DTP and B) PAX as a function of time. Schematic representation of the effect of collector type and H2O2 on depression of ...
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