Experimental study of the kinetics of ligand-promoted dissolution …

The present work is part of a broader study of the dissolution behaviour of antimony minerals, particularly stibnite (antimony(III)-sulfide, Sb 2 S 3), in the context of the …

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Kinetics of leaching of stibnite by mixed Na2S and NaOH solutions

The developed process includes oxidative chlorination leaching of stibnite (Sb2S3) concentrate assaying 64.86% Sb prepared from indigenous low-grade ore containing 20.16% Sb using …

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Study of alkaline hydrometallurgical process for stibnite flotation

Nevertheless, recently Dembele et al. (2024) conducted acid leaching on stibnite tailings. On the others hand, several investigations were conducted at laboratory scale. …

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Kinetic Investigation of Dissolution of Sb2S3 in Na2S and NaOH …

Biver, M.; Shotyk, W., Stibnite (Sb2S3) oxidative dissolution kinetics from pH 1 to 11. Geochimica et Cosmochimica Acta 2012, 79, 127–139. [Google Scholar] Raschman, P.; …

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(PDF) Optimisation of Pure Stibnite Leaching Conditions by …

The developed process includes oxidative chlorination leaching of stibnite (Sb2S3) concentrate assaying 64.86% Sb prepared from indigenous low-grade ore containing 20.16% Sb using …

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Reductive-oxidative pretreatment of a stibnite flotation …

Sb2S3 + HS- + OH - = 2SbS2- + H20 (13) Suacedo [13] achieved 90% leaching of a stibnite concentrate in one hour at ambient temperatures using a 12.5% alkaline sodium …

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(PDF) Metal Extraction Process for High Grade Stibnite of Kharan

The developed process includes oxidative chlorination leaching of stibnite (Sb2S3) concentrate assaying 64.86% Sb prepared from indigenous low-grade ore containing 20.16% Sb using …

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Reductive leaching of stibnite (Sb2S3) flotation concentrate using

The reductive decomposition of a stibnite (Sb2S3) flotation concentrate using elemental iron was investigated in hydrochloric acid. The leaching process which proceeded …

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Antimony Leaching from Stibnite and Complex Ores*

In one experiment, polished slabs of a museum-grade stibnite and a mixed-sulfide ore sample containing 28% Sb were subjected to accelerated weathering at humidity and 31-35oC …

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Metal Extraction Process for High Grade Stibnite of Kharan …

The ore was characterized by X-ray diffraction (XRD) technique and found to contain 66% stibnite i.e. antimony sulfide (Sb2S3). The process parameters for the extraction of antimony were …

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Thulani MAHLANGU | University of the Witwatersrand, …

The thermodynamics and kinetics of reductively decomposing stibnite (Sb2S3), a refractory sulphide, using an acidified solution of chromium(II) ions in a chloride medium (for Au …

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Effect of NaOH concentration in leaching solution on variation of

The objective of the research study presented in this paper was to determine, under laboratory conditions, antimony recoveries in alkaline leaching of the stibnite (Sb2S3) sample originated …

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Leaching of Natural Stibnite using Sodium Hydroxide …

The objective of the research study presented in this paper was to determine, under laboratory conditions, antimony recoveries in alkaline leaching of the stibnite (Sb2S3) sample originated from ...

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FIGURE1. Antimony recovery versus temperature at two times of leaching

NaOH, s:l = 1:50) from publication: BEHAVIOUR OF STIBNITE IN ALKALINE LEACHING | Stibnite (Sb2S3) occurs in nature accompanied by quartz (SiO2), pyrite (FeS2) and wurtzite …

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Investigation of the characteristics of stibnite (Sb2S3) flotation

The developed process includes oxidative chlorination leaching of stibnite (Sb2S3) concentrate assaying 64.86% Sb prepared from indigenous low-grade ore containing 20.16% …

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LEACHING OF STIBNITE IN NaOH SOLUTIONS

The objective of the research study presented in this paper was to determine, under laboratory conditions, antimony recoveries in alkaline leaching of the stibnite (Sb2S3) sample originated …

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Reductive leaching of stibnite (Sb2S3) flotation concentrates …

Reductive leaching of stibnite (Sb2S3) flotation concentrates using metallic iron in a hydrochloric acid medium II: Kinetics

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Reductive leaching of stibnite Sb2S3 flotation

Mar 20, 2020 Antimony Leaching from Stibnite and Complex Ores* Leaching and Characterization of Stibnite and Sb-rich Ore Specimens after Accelerated Weathering From the leachate …

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Mercury recovery versus temperature at two leaching

NaOH, s: l = 1:50) from publication: BEHAVIOUR OF STIBNITE IN ALKALINE LEACHING | Stibnite (Sb2S3) occurs in nature accompanied by quartz (SiO2), pyrite (FeS2) and wurtzite …

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Optimisation of Pure Stibnite Leaching Conditions by …

In the present work chemical basic leaching of pure Stibnite (Sb2S3) by Na2S and NaOH under different experimental conditions at 40°C, has been studied in order to optimise the reagent …

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Investigation of the characteristics of stibnite (Sb>2>S>3>) …

title = "Investigation of the characteristics of stibnite (Sb2S3) flotation tailings and extraction of critical metals (Sb and As): Optimization and scale-up", abstract = "The supply of metals is …

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Antimony recovery from two size fractions versus leaching time …

Download scientific diagram | Antimony recovery from two size fractions versus leaching time (1wt.% NaOH; T= 298 K; Stirring rate 10s-1 ) from publication: Leaching of stibnite in NaOH …

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Weathering-induced Sb isotope fractionation during leaching …

compositions of sulfides and secondary Sb minerals formed on the primary stibnite [Sb2S3] or in mine tailings grains were compared with each other. Furthermore, we experimentally …

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(PDF) Effect of selected parameters on stibnite concentrates leaching

The developed process includes oxidative chlorination leaching of stibnite (Sb2S3) concentrate assaying 64.86% Sb prepared from indigenous low-grade ore containing 20.16% Sb using …

WhatsApp: +86 18221755073

Reductive leaching of stibnite (Sb2S3) flotation concentrates …

In the stibnite leaching work, Meza-Saucedo (1986) attributes the diffusion control to ionic diffusion in the liquid phase. Gudyanga et al. (1998) proposed the un-reacted shrinking …

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LEACHING OF STIBNITE IN NaOH SOLUTIONS

No category LEACHING OF STIBNITE IN NaOH SOLUTIONS

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D. J. Simbi's research works | University of Zimbabwe, Harare …

The reductive decomposition of a stibnite (Sb2S3) flotation concentrate using elemental iron was investigated in hydrochloric acid. The leaching process which proceeded via both reductive …

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METALLURGY

Sb2S3 volatilizes, in the absence of air, between 650° and 917° (S.A. Chakhov and I.I. Slobodskai). ... Sb2S33 Na2S = 2 Na3SbS3 Leaching stibnite with sodium sulfide. 2 Na3SbS3 + 6NaOH = 2 Sb + 6 Na2S + 3 H20 + 3/2 O2 Electrowinning.

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Leaching of stibnite in NaOH solutions

The objective of the research study presented in this paper was to determine, under laboratory conditions, antimony recoveries in alkaline leaching of the stibnite (Sb2S3) sample originated...

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