stibnite sb2s3 leaching
Stibnite
Stibnite or antimonite is sulfide metalloid mineral of antimony with chemical formula (Sb2 S 3 ). The color is shiny lead-gray tarnishing to black with massive, granular, radiating, and elongated crystals habits ( Fig. 1.50 ). The mineral contains 71.7% antimony in its natural purest form. Stibnite crystallizes in orthorhombic system, needle ...
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Stibnite | Properties, Occurrence, Formation and …
Chemical Formula: Sb2S3. 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. Physical …
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Stibnite Mineral Data
02.DB.05a Stibnite Sb2S3 Pbnm 2/m 2/m 2/m : Other Stibnite Information: References: NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) See Also: Links to other databases for Stibnite : 1 - Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 - Athena 4 - Franklin …
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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 @article{Mahlangu2006ReductiveLO, …
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Stibnite (Sb2S3) Solubility in Sodium Sulfide Solutions
Stibnite solubility increases at an increasing rate with rising Na2S concentration, and the reaction that best fits the experimental data is 2Sb2S3 + HS- + OH-= Sb4S72- + H2O, for which an equilibrium constant was estimated to be about 5.0. The solubility of stibnite ( Sb2S3) was measured at 25 C and 1 atmosphere in solutions ranging from 0.45 to 7.16 …
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Extracting antimony from high arsenic and gold-containing stibnite ore
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). The results indicated that the leaching efficiency of antimony was higher than 98%, and those of iron and arsenic were about 5.50% and 1.14%, respectively.
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(PDF) Effect of selected parameters on stibnite concentrates leaching
Reductive leaching of stibnite (Sb2S3) flo- tation concentrate using metallic iron in a hydrochloric acid medium II: kinetics. Hy- O3 þ Cl− þ Hþ ¼ HClO þ O2 ð8Þ drometallurgy 88, 132–142. ...
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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 …
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Process flow-sheet for gold and antimony recovery from stibnite
A study of stibnite acid oxidative leaching. Rudy (1991) View more references. Cited by (89) ... Leaching of Sb2S3 ore in an alkaline system involves the combination of sodium sulphide (Na2S) and sodium hydroxide (NaOH) to form a solution of sodium thioantimonite as shown in reactions 1 and 2 respectively. Commonly, NaOH is …
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Oxidative Chlorination Leaching of Stibnite Using Acidic …
The developed process includes oxidative chlorination leaching of stibnite (Sb2S3) concentrate assaying 64.86%. 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) …
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Stibnite (Sb2S3) oxidative dissolution kinetics from pH 1 …
The kinetics of oxidative dissolution of natural stibnite (Sb2S3) under environmentally relevant conditions is investigated. The effects of hydrogen ion activity (pH 1.08–10.63), dissolved ...
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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 ...
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Investigation of Alkaline Leaching Parameters on Stibnite Concentrate
The leaching parameters were 800 ppm NaCN, DO 16 ppm and pH 10.5 for a duration of 120 hours. The associated cyanide consumption was 4.0 kg/t. Gold leaching was not sensitive to cyanide concentration.
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Kinetics of leaching of stibnite by mixed Na2S and NaOH …
1966. TLDR. Stibnite solubility increases at an increasing rate with rising Na2S concentration, and the reaction that best fits the experimental data is 2Sb2S3 + HS- + OH-= Sb4S72- + H2O, for which an equilibrium constant was estimated to be about 5.0.
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Stibnite (Sb2S3) oxidative dissolution kinetics from pH 1 to 11
The kinetics of oxidative dissolution of natural stibnite (Sb 2 S 3) under environmentally relevant conditions is investigated. The effects of hydrogen ion activity …
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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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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 ...
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Stibnite (Sb2S3) oxidative dissolution kinetics from pH 1 to 11
Enhancement Mechanism of Stibnite Dissolution Mediated by Acidithiobacillus ferrooxidans under Extremely Acidic Condition. Oxidative dissolution of stibnite (Sb2S3), one of the most prevalent geochemical processes for antimony (Sb) release, can be promoted by Sb-oxidizing microbes, which were studied under alkaline …
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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 …
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Reductive leaching of stibnite (Sb2S3) flotation concentrate …
The reductive decomposition of a stibnite (Sb2S3) flotation concentrate using elemental iron was investigated in hydrochloric acid. The leaching process which …
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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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Leaching of Natural Stibnite Using Na2S and NaOH Solutions
Leaching of Natural Stibnite Using Na2S and NaOH Solutions. pavel raschman. 2011, International Journal of Energy Engineering. See Full PDF Download PDF.
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Application of alkaline solutions in leaching of stibnite
Request PDF | 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 ...
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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 …
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Reductive leaching of stibnite (Sb2S3) flotation …
Reductive leaching of stibnite (Sb2S3) flotation concentrates using metallic iron in a hydrochloric acid medium II: Kinetics @article{Mahlangu2006ReductiveLO, title={Reductive leaching of stibnite (Sb2S3) flotation concentrates using metallic iron in a hydrochloric acid medium II: Kinetics}, author={T. Mahlangu and Francis P. Gudyanga …
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Kinetics of leaching of stibnite by mixed Na2S and NaOH …
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-reacted ...
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Effect of NaOH concentration in leaching solution on …
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 ...
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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 ...
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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 species, …
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Clean antimony production from stibnite concentrate with …
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 ...
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