Notwithstanding, in the separation of gold bearing sulphides during froth flotation, a concentrate made up of both pyrite and arsenopyrite is obtained due to their similar characteristics and ...
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DOI: 10.1016/J.APSUSC.2019.02.172 Corpus ID: 104388733; Enhance flotation separation of arsenopyrite and pyrite by low-temperature oxygen plasma surface modification @article{Ran2019EnhanceFS, title={Enhance flotation separation of arsenopyrite and pyrite by low-temperature oxygen plasma surface modification}, …
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Having some arsenopyrite in your gold ore sample does not insure a full refractory gold processes is needed for recovery. ... 12 and 5 percent, respectively. At this grind size, liberations would be considered sufficient for good rougher separation. Ap-Arsenopyrite, Py/Po-Pyrite and Pyrrhotite, Cs-Copper Sulphides including Chalcopyrite ...
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However, the use of GA in the flotation separation of scheelite from cassiterite remains unexplored, and corresponding research on its separation behavior and depression mechanism is limited. ... Flotation separation of pyrite from arsenopyrite using sodium carbonate and sodium humate as depressants. Colloids Surf. A Physicochem. Eng. Asp, …
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2.2. Micro-flotation experiments. A small-scale mechanical agitation/flotation machine was used for the flotation experiments. The arsenopyrite sample (2 g) was mixed with deionized water (40 mL) and the pH was adjusted to the desired value by the addition of NaOH/H 2 SO 4, as measured by a pH meter (PHS-3C, …
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The flotation separation efficiency of pyrite and arsenopyrite can be enhanced by low-temperature oxygen plasma pretreatment. In this study, the plasma modification mechanism on arsenopyrite and ...
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Here, the flotation of artificial mixed ore of pyrite/arsenopyrite was conducted to verify the separation effect of ZnSO 4 on pyrite/arsenopyrite system in Na 2 CO 3 and SBX solution. When the pyrite:arsenopyrite was 10:1, the S and As grade of the mixed ore were 50.26% and 4.18%; when the ratio was 5:1, the S and As grade were …
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Understanding the crystal structure and the electronic properties of arsenopyrite and pyrite helps us to further understand the difficulties of the separation of arsenopyrite and pyrite from the theoretical point of view, as well as providing a theory basis for efficient flotation separation of arsenopyrite and pyrite.
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Microflotation was conducted in a 40 mL flotation cell to investigate the flotation behaviors of pyrite and arsenopyrite under different conditions. The mineral samples were cleaned by ultrasonication prior to the tests.
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The effects of pre-treatment methods and the use of different types of depressants on the flotation of arsenopyrite are illustrated in Figure 4. The arsenic …
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DOI: 10.1016/s1003-6326(22)66053-9 Corpus ID: 254318737; Interaction mechanism of ferrate(VI) with arsenopyrite surface and its effect on flotation separation of chalcopyrite from arsenopyrite
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In this research work, the characterization of arsenopyrite depression was studied during collectorless flotation, in the presence of Al 2 (SO 4) 3 and Na 2 SiO 3 …
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Mixed pyrite–arsenopyrite flotation separation tests were carried out to verify the selective activation performance of ammonium oxalate in the lime system. As shown in Fig. 2(b), the flotation reagent system of the mineral mixture (1 g pyr-ite and 1 g arsenopyrite) flotation was consistent with the single-mineral flotation.
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Separation of arsenopyrite and arsenian pyrite minerals from arsenic-barren pyrite phases, therefore, promises savings in reagent costs and power …
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Separation of pyrite and arsenopyrite by flotation using xanthates presents difficulties due to the fact that xanthates adsorb onto both these minerals as dixanthogen, which is not cation selective. Therefore, a number of separation techniques have been employed by a number of authors to produce separate arsenopyrite and pyrite streams …
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DOI: 10.1016/j.mineng.2022.107426 Corpus ID: 246598808; Effect of peracetic acid as a depressant on the flotation separation of chalcopyrite from arsenopyrite @article{Liu2022EffectOP, title={Effect of peracetic acid as a depressant on the flotation separation of chalcopyrite from arsenopyrite}, author={Yang Liu and Zhicong Wei and …
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Keywords: flotation, arsenopyrite, pyrite, selective separation 1. Introduction Arsenic in sulfide minerals (arsenopyrite, arsenian-pyrite, etc.), sulfosalts minerals (tennantite, …
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Furthermore, selective separation of pyrite from arsenopyrite in an auriferous bulk flotation concentrate, stockpiled in the mine area (in Stratoni Halkidiki, Greece), was found to be possible under carefully controlled flotation conditions; the latter could be beneficial to the gold recovering process.
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Four oxidants, NaClO, KMnO 4, K 2 Cr 2 O 7, and H 2 O 2, were used to promote the flotation separation of pyrite (FeS 2) from arsenopyrite (FeAsS). Ore …
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DOI: 10.1016/j.colsurfa.2020.124669 Corpus ID: 216452190; Flotation separation of pyrite from arsenopyrite using sodium carbonate and sodium humate as depressants @article{Liu2020FlotationSO, title={Flotation separation of pyrite from arsenopyrite using sodium carbonate and sodium humate as depressants}, author={Ruizeng Liu and Jialei …
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The flotation separation efficiency of pyrite and arsenopyrite can be enhanced by low-temperature oxygen plasma pretreatment. In this study, the plasma …
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Pyrite and arsenopyrite are common associated sulfides. Because their crystal structures and surface properties are very similar, their flotation separation has been an important research topic. In the flotation process of arsenic and sulfur minerals, the oxidation reaction is easy to occur in different degrees.
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A 2 kg/t hydrogen peroxide addition and 120 g/t PAX collector concentration gave the best separation efficiency with 63.1% pyrite and 5.1% arsenopyrite recovery into the flotation concentrate.
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At present, the most commonly used technology to separate copper-bearing ore from other ores is froth flotation (Liu et al. 2017), and separation of different ores is a common problem in flotation process.However, in the flotation separation of chalcopyrite and arsenopyrite, it is difficult to separate chalcopyrite and arsenopyrite because of …
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Arsenopyrite is an As-bearing mineral, which is often recovered by flotation. The flotation separation of arsenopyrite and target minerals such as chalcopyrite is very significant to decrease the ...
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In this study, the surface modification of arsenopyrite and pyrite with low temperature oxygen plasma was developed as an effective approach to improve the flotation separation efficiency of minerals. The micro-flotation experiments results indicated that plasma pre-treatment can achieve selective flotation of arsenopyrite …
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Thus, flotation separation of arsenopyrite from pyrite was only possible for pH ≥ 11. The authors propose that, the flotation of pyrite at pH 8.5 was a result of chemisorption of IPETC with copper-treated pyrite and arsenopyrite to form a Cu-IPETC chelate. At higher pH conditions, the reaction changes to a physisorption with minimal ...
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Therefore, a crucial problem that needs to be solved in the flotation process is the selective separation of pyrite from arsenopyrite. Although much effort has been spent on the flotation of pyrite to separate arsenopyrite, the surface properties of toxic sands and pyrite and the adsorption properties of flotation agents are so similar that it ...
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Flotation is the most commonly used mineral beneficiation technique to separate scheelite from above calcium-bearing gangue minerals (Wills and Napier-Munn, 2005). At present, studies mainly focus on the separation of scheelite from calcite and fluorite, but there are relatively few reports on the flotation separation of scheelite from …
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Reducing the adhesion of mica on arsenopyrite surface using sodium phytate and the application in flotation separation. ABSTRACT The adhesion of clay …
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