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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%

(PDF) Ozonation leaching of a complex sulfidic antimony ore …

Compared with the pyrometallurgy technology, the hydrometallurgical process is considered as an environmental friendly technique which has attracted more attention due to their potential to deal with low grade complex stibnite. Leaching of stibnite in an alkaline solution was proposed by previous researchers (Raschman and Sminčáková, 2012 ...

Study on the leaching behavior of antimony in stibnite …

In order to investigate the release process of antimony from stibnite under the leaching effect of rain and snow in Hunan Xikuangshan(XKS) mining area, some important environmental factors are selected: dissolved oxygen, Fe(III) and Pseudomonas sp. AO-1 (referred to as AO-1). The one-factor batch sequence experimental method is …

Kinetics of leaching of stibnite by mixed Na

The kinetics of the reaction between particulate stibnite and mixed Na 2 S + NaOH solutions were studied. The effects of the concentration of the Na 2 S and NaOH (from 0.5% to 2.0%), temperature (from 292 K to 327 K) and particle size (from 40 μm to 500 μm) were investigated. The results are presented in terms of the shrinking (non …

Kinetics of leaching of stibnite by mixed Na2S and NaOH …

Kinetics of leaching of stibnite by mixed Na2S and NaOH solutions. pavel raschman. 2012, Hydrometallurgy. See Full PDF Download PDF. See Full PDF Download PDF.

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.

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 ...

Stibnite (Sb2S3) oxidative dissolution kinetics from pH 1 …

The kinetics of oxidative dissolution of natural stibnite (Sb 2 S 3) under environmentally relevant conditions is investigated.The effects of hydrogen ion activity (pH 1.08–10.63), dissolved oxygen saturation (p(O 2) from 0 to 80% of atmospheric pressure), and temperature (25–48 °C) on the reaction rate were studied using a mixed flow …

FIGURE1. Antimony recovery versus temperature at two times of leaching

Stibnite (Sb2S3) occurs in nature accompanied by quartz (SiO2), pyrite (FeS2) and wurtzite (ZnS). This paper describes the behavior of antimony and some minor accompanying elements (Hg, Fe, Zn, Cu ...

Weathering-induced Sb isotope fractionation during leaching of stibnite

The observations in the field settings are supported by laboratory stibnite leaching experiments with various acids for which Sb concentrations and isotopic compositions of the released Sb were determined. The results of this work can be used to develop Sb isotopic composition as a tracer for a better understanding of weathering …

Investigation of the characteristics of stibnite (Sb2S3) …

Tailings from mineral processing plants are generated in various categories, depending on the type of ore (mineralogy) and the mineral processing technology …

Reductive leaching of stibnite (Sb2S3) flotation …

Semantic Scholar extracted view of "Reductive leaching of stibnite (Sb2S3) flotation concentrates using metallic iron in a hydrochloric acid medium II: Kinetics" by T. Mahlangu et al.

Antimony release and isotope fractionation during leaching of stibnite …

Request PDF | On Jan 1, 2023, Marina Lazarov and others published Antimony release and isotope fractionation during leaching of stibnite (Sb 2 S 3 ): An experimental study | Find, read and cite ...

Reductive leaching of stibnite (Sb2S3) flotation concentrates …

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

Investigation of the characteristics of stibnite (Sb2S3) …

The present work investigated the characterisation and leaching of metals from stibnite tailings. The sample analysis shown the presence of sufide minerals such …

LEACHING OF STIBNITE BY MIXED Na^sub 2^S AND NaOH …

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(PDF) Leaching of stibnite in NaOH solutions

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 ...

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 (ZnS). This paper ...

Kinetics of Sb2S3 leaching in NaOH solution

The results obtained by leaching stibnite with a basic solution of sodium hydrogen sulphide are presented in this paper. ... in the case of stibnite (Sb2S3), the antimony (Sb) forms stable ...

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 …

Determination of the Optimum Conditions for the Dissolution of Stibnite

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% Sb prepared from indigenous low-grade ore containing 20.16% Sb using ferric chloride …

Process Flow-Sheet for Gold and Antimony Recovery from Stibnite

Recovery of gold from refractory ores requires a pretreatment to liberate the gold particles from the host mineral. In particular, in the case of stibnite (Sb2S3), the antimony (Sb) forms stable ...

Weathering-induced Sb isotope fractionation during …

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 investigated Sb isotope fractionation …

Optimisation of Pure Stibnite Leaching Conditions by …

A hydrometallurgical process was developed for the preparation of commercial grade antimony xide (Sb2O3) from indigenous antimony ore. The developed process …

Oxidative Chlorination Leaching of Stibnite Using Acidic …

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.

FIGURE1. Antimony recovery versus temperature …

Stibnite (Sb2S3) occurs in nature accompanied by quartz (SiO2), pyrite (FeS2) and wurtzite (ZnS). This paper describes the behavior of antimony and some minor accompanying elements (Hg, Fe, Zn, Cu ...

Leaching of Natural Stibnite using Sodium Hydroxide Solution …

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 ...

Antimony release and isotope fractionation during leaching …

DOI: 10.7185/gold2023.20321 Corpus ID: 266296428; Antimony release and isotope fractionation during leaching of stibnite (Sb2S3): An experimental study …

Antimony release and isotope fractionation during …

We have performed leaching expetiments with three reagents: 0.5 M HNO 3, 0.05 M HCl, and 0.1 M oxalic acid on stibnite powder (0.1 g Sb) to test antimony release and isotopic fractionation. Duration of each experiment was from 10 minutes to up to 7 days at room temperature and pressure. Element concentration and isotope composition was ...

Non-oxidative leaching of mechanically activated stibnite

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% Sb prepared from indigenous low-grade ore containing 20.16% Sb using ferric chloride …

Investigation of the characteristics of stibnite (Sb2S3) …

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 ...

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 analyses, the net releases of elements of interest from the semi-polished slabs of stibnite and Sb-containing mixed-sulfide ores after 44 days of accelerated weathering …

Stibiconite (Sb3O6OH), senarmontite (Sb2O3) and valentinite (Sb2O3

The most important natural source of antimony is the ore mineral stibnite (Sb 2 S 3), which, in the supergene environment, is associated with its principal weathering products senarmontite (cubic Sb 2 O 3), valentinite (orthorhombic Sb 2 O 3), and stibiconite (Sb 3 O 6 OH), along with (minor) sulfo-salts and sulfates such as kermesite (Sb 2 S 2 …

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 ...