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ABSTRACT Smithsonite was refloated and recovered successfully from a low grade (Zn < 1%) zinc oxide ore sample (Wulagen Pb-Zn sulphide flotation tail) in lab batch scale tests using amines and Na2S. Combining sodium sulphide, sodium carbonate and sodium silicate in the rougher stage is suitable for dressing this ore sample. With 1 kg/t …
In this study, a new flotation approach, a low-alkaline and non-desliming process, was introduced for improving lead and zinc recoveries, lowering production cost and reducing environmental pollution.Lab-scale experiments results show that the new process contributed to the flotation of the complex mixed sulfide-oxide lead and zinc …
After lead flotation at optimum pH 8, the flotation of zinc at a different pH (5–11.5), with two collector types, was performed to study the recovery and grade of zinc in the zinc concentrate.
Surface wettability is the key to affecting the flotation recovery of minerals; to reduce the hydrophilicity of the lead–zinc oxide mineral surface, sulfidation reconstruction is commonly used to form a sulfide film on the mineral surface, thereby modifying the surface properties of the mineral to achieve efficient flotation separation …
Froth flotation is the most popular method for the recovery of zinc oxide minerals. However, easy to slime, complex composition, high solubility, and reagent control difficulty ( Chen and Tang, 2020, Ejtemaei et al., 2011 ) are severe obstacles on the recovery of zinc resource.
Smithsonite is a typical zinc oxide mineral, and the flotation index is not ideal for the recovery of smithsonite via sulfidization–xanthate flotation. In this study, Pb 2+ was used as an activator for the stepwise activation of smithsonite in a sulfidization–xanthate flotation system.
The recovery of zinc from a flotation tailing using 17-different leaching agents, including inorganic and organic acids, alkaline solutions and chelating agents, was investigated. ... The beneficiation of lead–zinc oxide ores using flotation is rather hard compared to sulfides as oxides can dissolve and their surfaces become hydrated easily ...
With more and more attention being given to zinc oxide flotation in order to increase recoveries of Zn, a review of the zinc oxide flotation literature is presented together with some recent findings.
The sulfidization-amine flotation method is commonly used for the beneficiation of zinc oxide ores. Lanping zinc oxide ores contains 8.40% zinc, with the main mineral being smithsonite; additionally, they have a high mud content. Conventional sulfidization–ammonium flotation presents a low flotation index and unsatisfactory …
A representative sample of zinc oxide from Dashteh Sefid mine was obtained and then mineral characterization studies were done. The results of mineralogical analysis showed that the main zinc-bearing minerals are smithsonite, hemimorphite and gangue minerals are quartz and dolomite. In the present paper, the effect of important …
With the continuous depletion of a large number of zinc sulphide ores that are easy to treat, the finely disseminated and refractory low-grade zinc oxide ores has become an important source for the production of zinc minerals. In this paper, a sulfurization-amination flotation process has been proposed for concentrating large …
Flotation of the low-grade zinc oxide ore was achieved after surface modification by sulfidation and reduction at high temperature. A flotation concentrate …
Flotation of zinc oxide ore using cationic and cationic-anionic mixed collectors 155 Conclusion From two amine collectors used in this study, Armac T acts a little more selectively than Armac C and results in smithsonite concentrate with higher Zn grade while Armac C is effective in enhancing the recovery of Zn.
The flotation research of zinc oxide ores has been paid more and more attention with the increasing demand for zinc resources. In this particular study, ... while the Zn operating recovery in zinc oxide concentrate improved by 19.52%. Moreover, the total reagent cost of the whole new process significantly declined by 3.93 yuan per ton of ore. ...
Oxide lead–zinc ore sample containing 10.17% Pb, 10.98% Zn, 57 g/t Ag and 164 g/t Cd was subjected to this experimental study and taken from Kayseri located in the foothills of the Aladağ Mountains, Turkey.Preliminary flotation tests with the ore sample indicated that there was no selectivity in terms of zinc recovery; therefore studies were …
By adopting the new open-circuit process and using a ternary-collector system to treat low-grade zinc oxide ore, favorable flotation indices of 28.71% and …
With the depletion of natural mineral resources, secondary resources such as zinc leaching residue (ZLR) should be processed to recover valuable metals. In this study, flotation recovery of lead (anglesite) in ZLR from a zinc smelting plant was investigated, and the mechanism studied by using Fourier-transform infrared (FTIR) …
economical. Froth flotation methods are essential to the recovery of zinc and lead from these low-grade zinc oxide ores [13]. Of course, flotation reagents and flotation flow-sheets were the keys to addressing this obstacle originating from low-grade, highly oxi-dized properties and the complex co-occurrence relationships between …
The flotation flowsheet includes floating lead minerals at the first step while minimizing the recovery of zinc minerals (lead flotation circuit) and then floating the …
This study aims to investigate the best route to increase the recovery of oxide-sulfide copper ore. Among various methods, using nanoparticles is more desirable because of their high efficiency. So, ZnO nanoparticles were synthesized and surface modified via anionic sodium dodecyl sulfate (SDS) surfactants. The results showed a …
The recovery of zinc (Zn) and lead (Pb) from a citric leach solution of a non-sulfide type ore flotation tailing was examined utilizing sulfuric acid precipitation followed by solvent extraction ...
The flotation recovery of lead–zinc oxide ores remains a formidable challenge to date. One of the most efficient ways to address this challenge is to perform sulfidation …
Fig. 8. Zn grade and recovery of zinc ore flotation for various amount of oleic acid in presence of 1000 g/t sodium silicate at pH 9. Fig. 11. Zn grade and recovery of zinc ore flotation for various mixed collector (Armac C/KAX) concentration ratio in presence of 800 g/t Armac C, 3000 g/t Na2S, 250 g/t SH and 500 g/t sodium silicate at pH = 11.
The flotation of smithsonite from tailing which comes from the cerussite flotation circuit was investigated using Armac C and Armac T as amine collectors. The results indicated that the dosage of sodium sulfide, collector type, and desliming are the main affecting factors on the Zn grade and recovery of smithsonite flotation concentrate.
Separating oxidized zinc minerals from flotation tailings is always a challenge. In this study, a flotation tailing from Wulagen zinc mine in China (Zn grade < 1%) was processed using froth flotation with …
For zinc oxide flotation, the Zn operating recovery in zinc oxide concentrate increased by 19.52%. Moreover, CaO dosage and CuSO 4 dosage significantly …
AbstractA combined process of flotation and high-gradient magnetic separation was proposed to utilize Yulong complex copper oxide ore. The effects of particle size, activators, Na2S dosage, LA (a mixture of ammonium sulfate and ethylenediamine) dosage, activating time, collectors, COC (a combination collector of modified hydroxyl …
DOI: 10.1016/j.chemer.2024.126096 Corpus ID: 268150676; Study on flotation recovery of typical carbon-bearing lead-zinc sulphide ore in Guizhou with pre-decarbonization @article{Li2024StudyOF, title={Study on flotation recovery of typical carbon-bearing lead-zinc sulphide ore in Guizhou with pre-decarbonization}, author={Guanghui Li and Zheyi …
Flotation is a conventional way for treating low grade metal oxide ore which has some advantages such as high efficiency and low cost. In order to recover the zinc from a low grade complex zinc oxide…
The main purpose of this study was to find the optimum values for factors affecting the Zn recovery rate using oxine or dithizone as a chelating agent collector during flotation in a Hallimond tube. Eight control factors, including four levels of pH, oxine/dithizone, corn starch, sodium thiosulfate, sodium citrate, sodium silicate, …