Leaching of Antimony from Stibnite Ore in KOH SolutionUp to12%cash back· Jan 13, 2021· The optimum leaching condition was obtained at a KOH concentration of 0.5 mol/L, temperature of 25°C, S/L of 100 g/L, and time of 133 min, with an antimony leaching yield of 56.5%. Kinetic studies based on the shrinking core model illustrated that the diffusion process through the ash layer is the ratelimiting step, with an activation energy of 4.97 kJ mol−1.Cited by 2 A. Awe(1), Caisa sson(2), Åke SandströmThe influence of leaching time on antimony dissolution from the copper sulphide concentrate was investigated. Leaching experiments were conducted under the following conditions 200 g/L solid concentration, 90C reaction temperature, 1
Jan 01, · Antimony concentrates at that time assayed 3040 g/t g and were leached on a batch basis, of approximately 8 t/8 h. Leaching was rapid and occurred in less than 15 min with pH, redox potential and thiourea concentration being critical to process control. Due to rapid reduction of redox potential in the leach, relatively high thiourea and
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Method for removing essentially all of the chemically bonded arsenic and antimony from copper sulfide ores. The arsenic and antimony are selectively leached out using Na 2 S in a basic solution. The resulting Na 3 AsS 4 and Na 3 SbS 4 are converted to the sulfides or to ferric arsenate and ferric antimonate for safe disposal. Sodium and sulfur values are recovered for recycling in the process.
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Feb 01, 2021· Antimony dissolution from tetrahedrite concentrate obtained from froth flotation experiments was investigated with Na 2 SNaOH as lixiviant agent. Min. Run Res. V and CCD methods were applied for the first time, to identify and optimize the effects of Na 2 S concentration, NaOH concentration, stirring speed, leaching time, temperature and solid percent on antimony recovery.
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A rapid and simple process has been developed for the recovery of antimony metal from stibnite ore of Kharan area (Balochistan) of Pakistan. The ore was characterized by Xray diffraction (XRD) technique and found to contain 66% stibnite i.e. antimony sulfide (Sb2S3). The process parameters for the extraction of antimony were optimized on laboratory scale by varying reaction temperature from
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The dependence of antimony leaching from an antimonycontaining copper concentrate on temperature is shown in Fig. 5. The leaching experiments were investigated by conducting tests at 40C to 100C while keeping the concentrations of sodium sulphide and solid material constant at 150 g/L and 100 g/L, respectively.
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Up to12%cash back· Jan 13, 2021· The optimum leaching condition was obtained at a KOH concentration of 0.5 mol/L, temperature of 25°C, S/L of 100 g/L, and time of 133 min, with an antimony leaching yield of 56.5%. Kinetic studies based on the shrinking core model illustrated that the diffusion process through the ash layer is the ratelimiting step, with an activation energy of 4.97 kJ mol1.
Cited by 2 Chat
A process for lixiviation of concentrates of copper sulphides of tetrahedral type containing high concentration of arsenic and antimony to recover copper and noble metals. The concentrates are repulped into an aqueous ferrous sulphate solution with an established and controlled solidliquid ratio which is thereafter oxidized by an oxygen containing gas in a reactor, thereby oxidizing the
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A method is disclosed for leaching a g ore which is refractory due to the presence of sulphide minerals of arsenic and antimony. The ground ore is leached with cyanide in a pipe reactor at a...
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Table 6 Optimized AS L laboratory lea ch testing Biotechnology of Concentrate and Antimony Ore Processing The perspective is shown for leaching antimony by alkaline solution of sulfate
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For example, depending on the ore or concentrate, the alkaline sulphide leaching consumes high reagents (Multani et al., ). In addition, stibnite leaching with Na 2 S leads to the huge production of byproducts such as Na 2 SO 4 and Na 2 S 2 O 3 that pose problems for solution disposal (
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Jan 01, · Antimony concentrates at that time assayed 3040 g/t g and were leached on a batch basis, of approximately 8 t/8 h. Leaching was rapid and occurred in less than 15 min with pH, redox potential and thiourea concentration being critical to process control. Due to rapid reduction of redox potential in the leach, relatively high thiourea and ferric ion concentrations were used.
Cited by 1 Chat
A method is disclosed for leaching a g ore which is refractory due to the presence of sulphide minerals of arsenic and antimony. The ground ore is leached with cyanide in a pipe reactor at a pressure of between 5 and 8 MPa. The terminal pH value of the pulp is controlled to be 10 or less than 10.
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antimony xide (Sb 2 O 3) from indigenous antimony ore. The developed process includes oxidative chlorination leaching of stibnite (Sb 2 S 3) concentrate assaying 64.86% Sb prepared from indigenous lowgrade ore containing 20.16% Sb using ferric chloride (FeCl 3) solution in acidic medium as
Author Muhammad Arif Bhatti, Ahmad Adnan, Abdul Ahad, Kamran Raza Kazmi, Adnan Akram Chat
This study investigated the leaching and electrowinning of antimony from a complex, high arsenic and gcontaining stibnite concentrate ore (AsAuSb ore) using slurry electrolysis (SE).
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Sodium sulfide leaching of a lowgrade jamesonite concentrate in the production of sodium pyroantimoniate through the air oxidation process and the influencing factors on the leaching rate of antimony were investigated. In order to decrease the consumption of sodium sulfide and increase the concentration of antimony in the leaching solution, twostage leaching of jamesonite concentrate
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Sep 21, · 10 OPERATIONS ORE PROCESSING 10.1 PROCESS OVERVIEW Ore processing for the Stibnite G Project is the separation of g, silver and antimony from its host rock. The processing will result in production of an antimony concentrate and a g r and silver rrich
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Aug 01, 2013· To have an effective and efficient leaching of antimony from its minerals (e.g. tetrahedrite), it would be beneficial to the leaching process if the mineral particles of the concentrate are finely ground prior to the leaching step (Filippou et al., 2007, Awe et al., 2010, Awe and Sandström, 2010b). Moreover, high concentration of the alkaline
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Jamaica Antimony Ore Safe And Reliable Antimony News Antimony Prices Antimony Market Trend and Antimony Trade the latest Antimony News the most authoritative Antimony Price on antimony ore concentrate. Iodine iodide leaching g ore is a promising method alternative to cyanide leaching In this paper EhpH diagram of Au I I2 H2O system
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method to ore ground to approximately 80mesh, 96.0 percent of the mercury in the ore was recovered in a cinnabar concentrate that assayed 80.3 percent Hg and 1.3 percent Sb. The antimony product contained 80.7 percent of the antimony; it assayed 0.82 percent Hg and 62.3 percent Sb. The mercury product contained 11.6 percent of
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The influence of leaching time on antimony dissolution from the copper sulphide concentrate was investigated. Leaching experiments were conducted under the following conditions 200 g/L solid concentration, 90C reaction temperature, 150 g/L Na 2S and NaOH concentration was 20%w/w of Na 2S concentration. The experimental results are presented in
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