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stibnite sb s leaching
Ferric chloride leaching of antimony from stibnite
01/06/2019· 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 leaching reagent, under the following optimum conditions
LEACHING OF STIBNITE IN NaOH SOLUTIONS
At the first stage of hydrometallurgical processing of stibnite (Sb2S3), i. e. its leaching, the following acidic leaching media are commonly applied: mixture of hydrochloric and tartaric acids, mixture of nitric and tartaric acids and hot concentrated sulphuric acid [1]. In alkaline leaching, on the other hand, the aqueous solutions of alkali metal sulphides or alkaline earth metal sulphidesОнлайн-запрос
Reductive leaching of stibnite (Sb2S3) flotation
01/11/2006· 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 hydrogen sulphide gas.
Optimisation of Pure Stibnite Leaching Conditions by
In the present work chemical basic leaching of pure Stibnite (Sb2S3) by Na2S and NaOH under different experimental conditions at 40°C, has been studied in order to optimise the reagent concentrations for the antimony dissolution process. Response Surface Methodology has been used to find the best experimental concentrations to maximise the Sb extraction yield. 98-100% of antimonyОнлайн-запрос
Reductive leaching of stibnite (Sb2S3) flotation
01/08/2007· T. Mahlangu, F.P. Gudyanga, D.J. SimbiReductive leaching of stibnite (Sb 2 S 3) flotation concentrate using metallic iron in a hydrochloric acid medium I: Thermodynamics. Hydrometallurgy, 84 (2006), pp. 192-203. Google Scholar. Meza-Saucedo, 1986. L.A. Meza-SaucedoHydrometallurgical treatment of a Colombian stibnite concentrate. D.R. Gaskell, et al. (Eds.), Proceedings of The
BEHAVIOUR OF STIBNITE IN ALKALINE LEACHING
Leaching of natural stibnite (Sb2S3) that occurs together with other minerals such as quartz (SiO2), pyrite (FeS2) and wurtzite (ZnS) is a very important unit operation in which antimony passes into the leaching solution. Leaching is controlled by thermodynamic and kinetic aspects. From the thermodynamic point of view either acidic or alkaline leaching solutions can be applied for recoveringОнлайн-запрос
Antimony Leaching from Stibnite and Complex Ores*
To shed light on the leaching of Sb from mine wastes containing stibnite, two series of experiments were conducted. In one experiment, polished slabs of a museum-grade stibnite and a mixed-sulfide ore sample containing 28% Sb were subjected to accelerated weathering at 100% humidity and 31-35oC for 37-44 days. After leaching with distilled water, insoluble weathering products remaining on theОнлайн-запрос
Ferric chloride leaching of antimony from stibnite
Request PDF | Ferric chloride leaching of antimony from stibnite | A circulatory hydrometallurgical process: ferric trichloride (FeCl 3 ) leaching of antimony sulfide (Sb 2 S 3 ) (production of SbОнлайн-запрос
KINETIC STUDY OF LEACHING STIBNITE IN SODIUM HYDROXIDE
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 compounds to solution according to literature [1, 2] it is possible to use acid and also alkaline solutions. The most commonly used from alkaline dissolvent are solutions of sulphides of alkali metals or alkaline earth metalОнлайн-запрос
(PDF) Leaching of the antimony and accompanying of
The followi ng components were present in stibnite: Sb 2 S 3, SiO 2, ZnS, FeS 2. The aim of this study . was to establish the effect of composition of the aqueous alkaline leaching medium (1 %Онлайн-запрос
Ferric chloride leaching of antimony from stibnite
Request PDF | Ferric chloride leaching of antimony from stibnite | A circulatory hydrometallurgical process: ferric trichloride (FeCl 3 ) leaching of antimony sulfide (Sb 2 S 3 ) (production of SbОнлайн-запрос
Investigation of Alkaline Leaching Parameters on Stibnite
The leaching efficiencies of different sulfur and hydroxide sources were studied and compared to one another to create a better understanding of the reaction process. Kinetic models were investigated to identify the reaction pathway and calculate the activation energy. The activation energy of the stibnite dissolution was assessed as 19.13 kJ/mol using a two-dimensional diffusion-reactionОнлайн-запрос
Oxidative Chlorination Leaching of Stibnite Using Acidic
chlorination leaching of stibnite (Sb 2 S 3) concentrate assaying 64.86% Sb prepared from indigenous low-grade ore containing 20.16% Sb using ferric chloride (FeCl 3) solution in acidic medium as lixiviant followed by purification, precipitation and crystallization of antimony trioxide as end product. An effort was made to investigate the effect of all the important variables encountered inОнлайн-запрос
Antimony Leaching from Stibnite and Complex Ores*
To shed light on the leaching of Sb from mine wastes containing stibnite, two series of experiments were conducted. In one experiment, polished slabs of a museum-grade stibnite and a mixed-sulfide ore sample containing 28% Sb were subjected to accelerated weathering at 100% humidity and 31-35oC for 37-44 days. After leaching with distilled water, insoluble weathering products remaining on theОнлайн-запрос
Original Research Leaching and Releasing Characteristics
on stibnite (Sb 2 S 3) under different dissolved oxygen saturation degrees (0~80%) and different temperatures (25~48ºC), which showed that the higher concentration of dissolved oxygen and higher temperature could make the dissolution release rate of stibnite faster, and they also presented the empirical equation for dissolution and release of stibnite. For this purpose, by taking antimonyОнлайн-запрос
KINETIC STUDY OF LEACHING STIBNITE IN SODIUM HYDROXIDE
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 compounds to solution according to literature [1, 2] it is possible to use acid and also alkaline solutions. The most commonly used from alkaline dissolvent are solutions of sulphides of alkali metals or alkaline earth metalОнлайн-запрос
Effect of selected parameters on stibnite concentrates
•A novel ozonation leaching process of stibnite concentrates•High antimony extraction is obtained in hydrochloric acid s...Онлайн-запрос
(PDF) Leaching of the antimony and accompanying of
The followi ng components were present in stibnite: Sb 2 S 3, SiO 2, ZnS, FeS 2. The aim of this study . was to establish the effect of composition of the aqueous alkaline leaching medium (1 %Онлайн-запрос
Process Flow-Sheet for Gold and Antimony Recovery from
In the present work chemical basic leaching of pure Stibnite (Sb 2 S 3) by Na 2 S and NaOH under different experimental conditions at 40°C, has been studied in order to optimise the reagentОнлайн-запрос
Basic theory and optimization of gold containing antimony
metallic minerals are mainly composed of native gold (Au), arsenopyrite (FeAsS), stibnite (Sb. 2. S. 3), and the gangue minerals were mainly quartz (SiO. 2). 10 20 30 40 50 60 70 80 90 0 1000 2000 3000 4000 5000 6000 7000. A Q Q Q S-Stibnite Q-Quartz A-Arsenopyrite S S S S A S S A S S S S S S Intensity/counts 2θ/deg. Fig. 1. XRD curve of the test sample . 2.2. Leaching test . The samples wereОнлайн-запрос
Effect of selected parameters on stibnite concentrates
•A novel ozonation leaching process of stibnite concentrates•High antimony extraction is obtained in hydrochloric acid s...Онлайн-запрос
Alkali Leaching of Antimony Sulphide and Electrolytic
Time of leaching 1 hour Temperature 200 C. Quantity of solution 250 0 0 Variable amount of Stibnite used Amount of'Stibnite Percentage Grams of Sb per used Extracted Liter of Solution 1 75~ 2.10 2 73% 4.10 3 70% 5.95 4 71% 8.35 8 37% 8.60 From the results obtained it is apparent that the more Stibnite there is introduced into the solutionОнлайн-запрос
Leaching of the antimony and accompanying of elements
The following components were present in stibnite: Sb2S3, SiO2, ZnS, FeS2. The aim of this study was to establish the effect of composition of the aqueous alkaline leaching medium (1 % NaOH, 1 % NaOH + 1 % Na2S2O3, 1 % NaOH + 1 % Na2S) on the recoveries of Sb, Fe, Pb, Zn, Cu, Ni and Hg. The antimony recoveries in the leaching solutions NaOH and NaOH + Na2S2O3 solutions were lower inОнлайн-запрос
Leaching pretreatment for gold-bearing refractory stibnite
The aim of the present experimental study was to ascertain in preliminary manner the best conditions for leaching, by alkaline. Skip to main content. T&F logo. Search: Search all titles. Search all titles. Search all collections. Login; Hi, User . Your Account. Logout. Search: Search all titles ; Search all collections ; Mineral Processing on the Verge of the 21st Century. DOI link forОнлайн-запрос
The Impact of Physical Properties on the Leaching of
The leaching of Sb, As, Hg, Pb, Cd and Zn decreased with an increase in grain size and leachable portions of metal ranged between 0.01% to 1.56% of total PTE content. Leaching tests identified the release of PTEs through three stages: a. alkaline mineral dissolution and H+ exchanging with base cation; b. oxidation and acid production from pyrite and other reducing minerals; and c. theОнлайн-запрос
Leaching of the arsenopyrite/pyrite flotation concentrates
stibnite (Sb 2S 3) (Kadenhe and Makande, 1987; Makande, 1988; Swash, 1988; Casparini, 1983; Husein, 1981). Apart from the conventional roasting pretreatment process prior to cyanidation, hydrometallurgical pretreatment processes can be used as alternatives. The hydrogen sulphide route for the decomposition of sulphides has been widely studied in two main areas of non-oxidative dissolutionОнлайн-запрос
stibnite sbs compounds captain-sarah.de
stibnite sbs compounds. The crystal structure of stibnite sbs, pnma, a, b, c , v at k was refined in situ at , , and k it is a major characteristic of the structure that the sbs secondary bonds enclosing sb s inert lonepair electrons at k are significantly shorter than the corresponding sum of the sb and s van der waals radii concerning theОнлайн-запрос
Stibnite Wikipedia
Stibnite, sometimes called antimonite, is a sulfide mineral with the formula Sb 2 S 3.This soft grey material crystallizes in an orthorhombic space group. It is the most important source for the metalloid antimony. The name is from the Greek στίβι stibi through the Latin stibium as the old name for the mineral and the element antimony.Онлайн-запрос
The Impact of Physical Properties on the Leaching of
The leaching of Sb, As, Hg, Pb, Cd and Zn decreased with an increase in grain size and leachable portions of metal ranged between 0.01% to 1.56% of total PTE content. Leaching tests identified the release of PTEs through three stages: a. alkaline mineral dissolution and H+ exchanging with base cation; b. oxidation and acid production from pyrite and other reducing minerals; and c. theОнлайн-запрос
Antimony is obtained by heating pulverized stibnite (Sb 2
Sb 2 S 3 + 3Fe 2Sb + 3FeS Suppose that 0.600 kg of stibnite and 0.250 kg of iron turnings are heated together to give 0.200 kg of Sb metal. Determine: a. The limiting reactant . b. The percentage