Stibnite Sb2s3 Leaching

Reductive leaching of stibnite (Sb2S3) flotation concentrate …

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

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Reductive leaching of stibnite (Sb2S3) flotation concentrates …

In this work, the kinetics of reductively leaching stibnite using metallic iron in a hydrochloric acid medium at varying pH, iron-to-concentrate ratio and temperature, …

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Investigation of Alkaline Leaching Parameters on Stibnite Concentrate

In the present study, an alkaline leaching process was carried out on stibnite concentrate to evaluate the effect of reaction parameters on the percentage of antimony extraction.

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(PDF) Effect of selected parameters on stibnite …

High antimony extraction (94.3%) with low iron dissolution (2.3%) is achieved under the following leaching conditions: 4.5 mol/L hydrochloric acid concentration, 2.0 L/min gas flow rate and 8:1 of the L/S ratio, …

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Leaching of natural stibnite using sodium hydroxide solution

This paper presents the results of a laboratory investigation of alkaline leaching of stibnite sample, which originated from Pezinok (Slovakia) mine. The leaching media used was aqueous solution containing sodium hydroxide. This research focused on establishing the effect of the following parameters on alkaline leaching: NaOH …

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Oxidative Chlorination Leaching of Stibnite Using Acidic …

A hydrometallurgical process was developed for the preparation of commercial grade antimony xide (Sb2O3) from indigenous antimony ore. The developed process includes oxidative chlorination leaching of stibnite (Sb2S3) concentrate assaying 64.86%

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High-Temperature Volatilization Mechanism of Stibnite in …

The results show that the leaching efficiency (%) of antimony increases with the temperature (from 35 °C to 65 °C) and hydrochloric acid concentration (from 3.0 mol/L to 4.5 mol/L). ... In regard to the materials used, Sb2S3 (stibnite) was obtained from Aldrich Chemical Co. (St. Louis, MO) and was a fine powder with 96 pct Sb2S3, and nitrogen ...

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Stibnite (Sb2S3) oxidative dissolution kinetics from pH 1 to 11

Semantic Scholar extracted view of "Stibnite (Sb2S3) oxidative dissolution kinetics from pH 1 to 11" by M. Biver et al.

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Effect of NaOH concentration in leaching solution on …

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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Non-oxidative leaching of mechanically activated stibnite

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 ferric chloride (FeCl3) solution in acidic medium as lixiviant followed by purification, precipitation and crystallization of antimony xide as end product.

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Stibnite (Sb2S3) oxidative dissolution kinetics from pH 1 to 11

Subsequent weathering and leaching of other minerals by acidic drainage waters causes elevated concentrations of a broad range of potentially toxic elements, …

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Mechanism of stibnite volatilization at high temperature

The volatilization of stibnite (Sb2S3) in nitrogen from 700 to 1000 °C was investigated by using thermogravimetric analysis. The results indicate that in inert atmosphere, stibnite can be volatilized most efficiently as Sb2S3 (g) at a linear rate below 850 °C, with activation energy of 137.18 kJ/mol, and the reaction rate constant can be …

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Oxidative chlorination leaching of stibnite using acidic ferric

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 ferric chloride ...

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Application of Alkaline Solutions in Leaching of Stibnite

Laboratory leaching tests of natural stibnite (containing Sb2S3, SiO2, ZnS and FeS2) with NaOH or NaOH – Na2S solution were carried out. Antimony recovery in NaOH leaching was lower than that with Na2S – NaOH solutions (1:1). A decrease in particle size led to higher antimony recovery.

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Kinetics of leaching of stibnite by mixed Na2S and NaOH …

Semantic Scholar extracted view of "Kinetics of leaching of stibnite by mixed Na2S and NaOH solutions" by P. Raschman et al.

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Extracting antimony from high arsenic and gold-containing stibnite …

This study investigated the leaching and electrowinning of antimony from a complex, high arsenic and gold-containing stibnite concentrate ore (As-Au-Sb ore) using slurry electrolysis (SE).

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Antimony release and isotope fractionation during leaching …

Antimony release and isotope fractionation during leaching of stibnite (Sb 2 S 3 ): An experimental study. To read the full-text of this research, you can request a copy …

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Kinetics of stibnite (Sb2S3) oxidation at roasting temperatures

Experimental work on the oxidation of stibnite (Sb2S3) was carried out at temperatures between 350 and 500°C and oxygen partial pressures between 1.01 and 21.28 kPa by using a thermogravimetric analysis method. The oxidation rate of stibnite was significantly influenced by both temperature and partial pressure of oxygen. Stibnite oxidized in one …

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Stibnite (Sb2S3) oxidative dissolution kinetics from pH 1 …

The Sb isotope compositions of sulfides and secondary Sb minerals formed on the primary stibnite [Sb 2 S 3] or in mine tailings grains were compared with each other. Furthermore, we experimentally investigated Sb isotope fractionation during stibnite leaching with different acids.

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Leaching of Antimony from Stibnite Ore in KOH Solution for …

This work aims to shed light on the leaching kinetics of antimony from stibnite ore in potassium hydroxide (KOH) solution. Response surface methodology based on central composite design was used ...

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Antimony release and isotope fractionation during …

It appears that slow Sb leaching with weak acids results in the preferential mobilisation of heavier Sb isotope, potentially due to partial re-equilibration of leachate and residue.

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Weathering-induced Sb isotope fractionation during leaching of stibnite

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Selective alkaline leaching of antimony from Low-grade …

Investigation of the characteristics of stibnite (Sb2S3) flotation tailings and extraction of critical metals (Sb and As): Optimization and scale-up. ... This work aims to shed light on the leaching kinetics of antimony from stibnite ore in potassium hydroxide (KOH) solution.

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Reductive leaching of stibnite (Sb2S3) flotation …

In this work, the kinetics of reductively leaching stibnite using metallic iron in a hydrochloric acid medium at varying pH, iron-to-concentrate ratio and temperature, have been investigated. The leaching data was then analysed using the initial rate theory and the unreacted shrinking core model in order to explain the leaching mechanisms as ...

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Reductive leaching of stibnite (Sb2S3) flotation concentrate using

The reductive decomposition of a stibnite (Sb 2 S 3) flotation concentrate using elemental iron was investigated in hydrochloric acid.The leaching process which proceeded via both reductive and non-oxidative chemical decomposition reactions achieved desulphurisation in excess of 95% to produce elemental and dissolved antimony …

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