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The contribution of the experiments presented here is the evaluation of tannin as a selective depressant in sulphides differential flotation, particularly for pyrite depression, defining the conditions leading to the optimal selectivity and efficiency in the flotation process. ... (1980), and this can be explained by surface oxidation of pyrite ...
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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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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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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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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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@article{Yang2021DifferentialAO, title={Differential adsorption of a high-performance collector at solid–liquid interface for the selective flotation of hematite from quartz}, author={Bin Yang and Wan-zhong Yin and Jin Yao and Zhanglei Zhu and Haoran Sun and Keqiang Chen and Li-Ying Wang}, journal={Journal of Molecular Liquids}, …
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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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Froth flotation is a selective separation process to separate valuable materials (recyclables, minerals, and other fine-size waste) from unwanted materials (gangue) …
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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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Selective flotation in sulphide systems has been extensively investigated using native starch and dextrin as attractive and eco-friendly depressants. ... The coating affects whether and to what extent starch interacts with the mineral surface and affects the subsequent differential flotation behaviour. ... As explained earlier, ...
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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 in …
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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.
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Use of Microbially Induced Mineral Beneficiation. Microbially induced mineral beneficiation involves three strategies, namely, selective bioleaching of the undesirable mineral from an ore or concentrate, selective flotation of the mineral, or selective …
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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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The selective collecting performance and differential adsorption mechanisms of DEOSA for both hematite and quartz were studied by flotation experiments and surface analysis. Flotation results suggested that DEOSA displayed excellent collecting capacity for quartz against hematite and the effective removal of quartz from hematite was achieved.
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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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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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hydrodynamic properties of frothers and collectors and their effect on flotation performance. This new understanding of the relationship between chemistry and hydrodynamics has …
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ABSTRACT: The selective action mechanism of sodium butyl xanthate (BX), ammonium salt (NH4 +), and sodium m-nitro-benzoate (m-NBO) on pyrite and arsenopyrite was examined by experiments and quantum chemistry. The experiments show that under alkaline conditions, ammonium salt (NH4 +) and m-NBO can have a strong inhibitory …
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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, …
DetailsBulk flotation is where a group of floatable minerals are targets together for maximum recovery whereas selective (or differential) flotation they are targeted sequentially with …
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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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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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In this study, the application of chitosan as a selective depressant in the differential flotation of galena and pyrite was tested. The single mineral flotation results showed that pyrite was depressed as well as galena by chitosan using potassium ethyl xanthate as a collector. However, in the flotation of pyrite–galena mixtures, due to the ...
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DOI: 10.1016/J.MINPRO.2013.04.010 Corpus ID: 93582078; Selective depression of sphalerite by chitosan in differential PbZn flotation @article{Huang2013SelectiveDO, title={Selective depression of sphalerite by chitosan in differential PbZn flotation}, author={Peng Huang and Mingli Cao and Qi Liu}, journal={International Journal of …
DetailsFlotation 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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DOI: 10.1016/J.JCIS.2006.05.036 Corpus ID: 34757709; Reexamining the functions of zinc sulfate as a selective depressant in differential sulfide flotation--the role of coagulation.
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Flotation differences between the scheelite and calcium-bearing minerals can be explained by variations in the electrical charges and steric hindrance at the …
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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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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 …
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Differential Flotation and Its Interaction Mechanism Xuemin Qiu *, Hongying Yang *, Guobao Chen and Wenjie Luo School of Metallurgy, Northeastern University, Shenyang 110819, China; [email protected] (G.C.); ... been reported as candidate selective depressants in the recovery of valuable metals from bulk concentration [14,15]. These ...
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The selective action mechanism of sodium butyl xanthate (BX), ammonium salt (NH4+), and sodium m-nitrobenzoate (m-NBO) on pyrite and arsenopyrite was examined by experiments and quantum chemistry. The experiments show that under alkaline conditions, ammonium salt (NH4+) and m-NBO can have a strong inhibitory effect on arsenopyrite. …
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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
DetailsDifferential 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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@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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The high flotation yield at pH 4 is due to the formation of sulfur-rich products and dixanthogen (Leppinen, 1990, Wang and Forssberg, 1991, López Valdivieso et al., 2005). The yield at pH 8 has been explained to be due to the formation of iron hydroxide-xanthate complexes on pyrite surface (Fornasiero and Ralston, 1992). The depression of ...
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