Stibnite Sb2s3 Leaching
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 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 …
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 species, ferrous ions and …
Antimony release and isotope fractionation during leaching …
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. …
Reductive leaching of stibnite (Sb2S3) flotation concentrate …
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 …
Investigation of Alkaline Leaching Parameters on …
reaction rate between stibnite and sodium sulfide was higher than that between stibnite and sodium hydroxide. In the present paper, the purpose of this research was to investigate the effect of hydroxide type and molarity on the extraction of Sb from the stibnite concentrate. Additionally, the effect of the sulfide/sulfur-based components ...
Leaching of Natural Stibnite using Sodium …
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 mobility during the early stages of stibnite …
The results show the presence of stibnite (Sb2S3) as the main primary Sb compound, bindhemite (Pb2Sb2O6(O,OH)), and minor proportions of stibiconite (Sb³⁺(Sb⁵⁺)2O6(OH)) as oxidised Sb species.
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 to investigate the effect of time, temperature, solid to liquid ratio (S/L), and KOH concentration as independent parameters on the leaching efficiency of antimony. …
Reductive leaching of stibnite (Sb2S3) flotation concentrate using metallic iron in a hydrochloric acid medium I: …
The present work investigated the characterisation and leaching of metals from stibnite tailings. The sample analysis shown the presence of sufide minerals such as stibnite, …
Mechanism and Kinetics of Stibnite Dissolution in H
This paper is concerned with the kinetics of stibnite (Sb2S3) dissolution in H2SO4-NaCl-Fe(SO4)1.5-O2 solutions. The experimental results of our study showed a positive effect from ferric ions on stibnite dissolution of up to 0.05 M. An increase in H2SO4 concentration from 0.8 to 3 M and NaCl concentration from 0 to 3 M NaCl improved the stibnite dissolution. In …
(PDF) 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 …
Reductive leaching of stibnite (Sb2S3) flotation …
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 core model for the reductive decomposition of stibnite flotation concentrate using Cr(II) ionic species (9), which is also a heterogeneous system. This was on the ...
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 using
Request PDF | Reductive leaching of stibnite (Sb2S3) flotation concentrates using metallic iron in a hydrochloric acid medium II: Kinetics | Reductive leaching of metal sulphides is an interesting ...
Oxidizing Roast; Stibnite the Antimony Mineral
The ignition temperature: According to Friedrich, stibnite, if heated in air, begins to oxidize at 290°C. if the size of a grain is 0.1 mm. in diameter; at 343°, if 0.1 to 0.2 mm.; and 430° if 0.2 mm. The fusibility of a mixture of Sb2S3 and Sb2O3 which in the form of kermesite (Sb2S3)2.Sb2O3 melts at 517°C.
Study on the leaching behavior of antimony in stibnite under …
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 …
Kinetics of leaching of stibnite by mixed Na2S and NaOH solutions
The calculated values of the kinetic parameters indicate that the leaching process is controlled by both the intrinsic chemical reaction between Sb2S3 and Na2S at the liquid/solid interface and ...
(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 ...
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
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.
Clean antimony production from stibnite concentrate with …
The results show that stibnite (Sb2S3) can quickly transform to senarmontite (Sb2O3) in the presence of Fe2O3 and Na2CO3, and then Sb2O3 will be continuously reduced into metallic Sb.
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 adopted to …
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 ...
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).
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. Skip to search form Skip to main content Skip to account menu ... Acid leaching and dissolution of major sulphide ore minerals: processes and galvanic effects in complex systems. P. K. Abraitis R. Pattrick G. Kelsall D. Vaughan.
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 reactor. . …
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 ...
Leaching of the antimony and accompanying of elements …
This paper presents results of the laboratory investigation of alkaline leaching of stibnite that is an important mineral occuring in the antimony-bearing raw materials. The following components …