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Chemical leaching of pure stibnite has been studied in order to optimise the concentration of the used reagents in the basic leaching (Ubaldini et al., 2000b). A centred 23 full …
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Different leaching agents can be used for treatment of stibnite (Sb 2 S 3) ore: mixture of hydrochloric and tartaric acids, mixture of nitric and tartaric acid and hot concentrated sulfuric acid [4]. Sb 2 S 3 can be dissolved also by alkaline solutions, which consists of sodium sulfide (Na 2 S) and sodium hydroxide (NaOH) [2], [5]. The ...
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DOI: 10.1016/J.HYDROMET.2019.04.026 Corpus ID: 150110101; Extracting antimony from high arsenic and gold-containing stibnite ore using slurry electrolysis @article{Yonglu2019ExtractingAF, title={Extracting antimony from high arsenic and gold-containing stibnite ore using slurry electrolysis}, author={Zhang Yonglu and Chengya …
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Semantic Scholar extracted view of "Kinetics of leaching of stibnite by mixed Na2S and NaOH solutions" by P. Raschman et al. ... This work aims to shed light on the leaching kinetics of antimony from stibnite ore in potassium hydroxide (KOH) solution. ... Mechano-chemical leaching in hydrometallurgy of complex sulphides.
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This group of reagents is capable of acting as acid or base, which makes it interesting to be explored in chemical leaching of Sb 2 S 3 ores. On the other hand, some organic acids have been ...
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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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Leaching of Sb 2 S 3 ore in an alkaline system involves the combination of sodium sulphide (Na 2 S) and sodium hydroxide (NaOH) to form a solution of sodium thioantimonite as shown in reactions 1 ...
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Zinc complexes are more likely to cause trouble in the cyanidation of silver ores because such ores contain much more silver than a gold ore contains gold. Thus, a much larger amount of zinc is required …
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This work aims to shed light on the leaching kinetics of antimony from stibnite ore in potassium hydroxide (KOH) solution. Response surface methodology …
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Chemical leaching of pure stibnite has been studied in order to optimise the concentration of the used reagents in the basic leaching (Ubaldini et al., 2000b). A centred 23 full factorial design has been planned in order to evaluate the effect of Na2S, NaOH and ore concentrations on the Sb extraction yield.
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A circulatory hydrometallurgical process: ferric trichloride (FeCl 3) leaching of antimony sulfide (Sb 2 S 3) (production of Sb by replacing it with iron) followed by membrane electrowinning of ferrous chloride (FeCl 2), was developed to cleanly extract Sb from stibnite.First, Sb was leached (leaching efficiency >98%), using FeCl 3 as …
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gating the kinetics of leaching of stibnite ore in KOH solution using a shrinking core model and optimizing the leaching condition. As RSM mini-mizes the number of experiments and reduces the cost and time, it was applied in this study. EXPERIMENTAL Materials The stibnite concentrate was kindly supplied by Zanjan-Bronze, Iran. First, the ...
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Stibnite-bearing ores continue to be the main source of this critical element, although its sourcing from secondary resources (e.g. mine tailings) is becoming increasingly relevant yet technically ...
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Section snippets Flotation concentrate and reagents. The stibnite flotation concentrate sample from Tiger Reef Mine, Zimbabwe, contained about 70% Sb 2 S 3 with relatively small amounts of pyrite (1.4%), arsenopyrite (1.8%) and chalcopyrite (0.4%). The concentrate was both gold (68.6 g/t) and silver (26.5 g/t) bearing and refractory to …
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The Yangla Cu skarn deposit is located in the central part of the Jinshajiang Suture Zone, southwest China, with a total reserve of 150 Mt Cu @ 1.03%. The newly discovered antimony orebodies at the depth of Yangla are strictly controlled by the stratum, structure, and lithology, which are lenticular and vein-like within the marble fracture …
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One of the small sites, called Hlboká dolka (Tiefengründl-Steingeräusch) was mined historically for stibnite and is located at 48.80338° N, 20.38265° E. Stibnite was the main ore mineral, accompanied by chalcostibite [CuSbS 2] and tetrahedrite [(Cu,Fe) 12 Sb 4 S 13]. All of them are hosted by hydrothermal quartz‑carbonate (ferroan ...
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Chemical Composition: Stibnite is composed of two elements, antimony (Sb) and sulfur (S). It consists of approximately 71.4% antimony and 28.6% sulfur by weight. ... After extraction, the stibnite ore is processed to recover antimony metal or antimony compounds, which find applications in industries such as flame retardants, batteries, and …
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Leaching of Sb 2 S 3 ore in an alkaline system involves the combination of sodium sulphide (Na 2 S) and sodium hydroxide (NaOH) to form a solution of sodium …
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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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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 …
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1. Introduction. Antimony is a trace element that is 62nd in abundance in Earth's crust (Wedepohl, 1995), with typical contents ranging from 0.1 to 0.9 mg kg −1 (Kabata-Pendias and Mukherjee, 2007).It can occur in four oxidation states (−III, 0, III, and V) and is most commonly found in either the trivalent or pentavalent oxidation state in …
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Three types of ores occur at Xikuangshan: (i) quartz-stibnite ore, (ii) calcite-quartz-stibnite ore, and (iii) calcite-stibnite ore (Fig. 4). As documented by Gu et al. (2007) and Zhu and Peng (2015), ores from different ore blocks at Woxi contain distinct mineral assemblages but, the Shangwoxi block is the major Sb producer and contains ...
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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 …
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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 ...
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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 …
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Leaching, often gold, is the process of extracting a soluble constituent from a solid by means of a solvent. In extractive metallurgy, of gold, it is the process of dissolving a certain mineral (or minerals) from an ore or a concentrate, or dissolving certain constituents from materials such as a calcines, mattes, scrap alloys, anodic slimes, etc., …
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chemical reaction (1) is soluble, inert components present in the stibnite ore may create a layer of " ash " through which the reactants and the products should be transported by diffusion.
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It primarily consists of monosulfide ore with a simple mineral composition, where stibnite (Sb 2 S 3) is the dominant ore mineral, associated with pyrite, sphalerite, and arsenopyrite. Analysis of surrounding surface water samples revealed maximum concentrations of 2545 μg/L for arsenic ( Wen et al., 2016 ) and 29423 μg/L for antimony ( Zhu ...
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Stibnite ore at Wadi Abu Quraiya, situated in the central Eastern Desert of Egypt has been subjected to petrographical, mineralogical, infrared, X-ray diffraction, chemical and spectral analyses.
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Chemical analysis of the As-Au-Sb ore (Table 1) indicates that the main valuable metals are antimony and gold. It is clear from the XRD pattern (Fig. 1) that the ore consists of stibnite (Sb 2 S 3), pyrite (FeS 2), arsenopyrite (FeAsS), and quartz (SiO 2), …
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method of processing the antimony-bearing ores, minerals or secondary materials. The rate of leaching antimony, which is present in the form of stibnite mineral (Sb2S3), may be affected by selecting the appropriate leaching solution or by pre-treating the ore. From thermodynamic aspect for conversion of
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The ore also contains 2.8% pyrrhotite, together with several antimony minerals (0.8% berthierite and gudmundite, 0.18% native antimony and stibnite). It also exhibits weak preg-robbing properties ...
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ANTIMONY LEACHING FROM STIBNITE AND COMPLEX ORES1 Y.T. John Kwong2, Allen Pratt2 and Gianluigi Botton2 Abstract. To shed light on the leaching of Sb from …
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The stibnite ore was provided by Twinkling Star Co., Ltd., Hunan Province, PRC. Table 1 summarizes the elemental analysis data of the stibnite ore, which were obtained using chemical titration and X-ray fluorescence (XRF). Fig. 1 illustrates the XRD pattern and SEM images of the stibnite ore. The main phases were identified to be Sb …
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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 ...
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