The complex As-Au-Sb ore is also an important antimony resource that is predominantly mined in Hunan and other places in China. It is essential to develop an economical and environmentally friendly process for the extraction of antimony from this ore. Antimony production involves hydrometallurgy and pyrometallurgy, the latter being …Web
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Highlights • A complete technological process for extracting antimony from refractory gold ore was proposed. • Antimony can be selectively removed from refractory gold ore by sodium sulfide leaching. • Antimony was recovered in the form of sodium …Web
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Antimony has a negative effect on the gold extraction from antimony–gold concentrate, and it is necessary to remove antimony in advance. For a high calcium low antimony–gold concentrate (Ca–Sb–Au ore), this study proposed to pre-remove antimony using slurry electrolysis in HCl–CaCl 2 system. The results indicated that the optimal …Web
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Since antimony is commonly found in precious metal refractory ore bodies, extraction is essential. The Sunshine Mine in KeIlogg, Idaho has recovered antimony from its precious metal tetrahedrite ...Web
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A range of variables that can affect the process have been studied. According to the results, under optimal conditions (pH = 0.645 T = 34 °C), antimony extraction yield is 94.4%. The reaction product is amorphous, with antimony content close to 70% and Cl and O contents similar to the stoichiometric ratios of complex oxychloride compounds.Web
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Antimony mine areas refer to regions with favorable geological conditions for antimony ore extraction. Antimony ores primarily exist in two forms: sulfides and oxides. ... Sb release characteristics of the solid waste produced in antimony mining smelting process. J. Mater. Cycles Waste Manag., 20 (1) (2016), pp. 193-200, 10.1007/s10163 …Web
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Producers, however, are facing challenges due to falling head grades and more complex ore mineralogy. In this Special Issue, recent advances in copper ore processing and extraction are discussed, focusing on: innovations in hydrometallurgical, pyrometallurgical, electrometallurgical, and pre-concentration technologies; improving copper ore ...Web
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Antimony had a similar effect to arsenic on the nickel extraction (Fig. 8), with a decrease in the rate and extent of nickel extraction as the antimony addition to the system increased (i.e. higher percentages of antimony sulphide in the concentrate mixture). Reduced leaching of aluminium from the solids and precipitation of aluminium as ...Web
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The antimony ore gravity separation process is applicable to most antimony ore dressing plants, because antimony minerals are minerals with high density and coarse particle size, and are easy to ...Web
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Baozhong Ma a, Xiaowu Jie a b, Peng Xing Add to Mendeley https://doi/10.1016/j.hydromet.2019.04.026 Get rights and content Highlights • A …Web
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Abstract On the basis of knowledge of the beneficiation properties of antimony minerals reported in the previous part of this article, this second half reviews the state of …Web
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There are more than 120 kinds of minerals in the natural environment, mainly in the form of stibnite (Sb 2 S 3), antimony ore (Sb 2 O 3), white antimony (Sb 2 O 4 ... Extraction. Extraction is the process of extracting solute from a solution composed of another solvent by taking advantage of the different solubility of the solute in a solvent ...Web
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In this paper, a clean process for extracting antimony from antimonial refractory gold ores is proposed. Antimony is dissolved into the solution with sodium …Web
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During the gold production process, the coexistence of arsenic and antimony will increase the consumption of CN −, OH − and O 2, and produce precipitates coated on the surfaces of gold particles so as to decrease the efficiency of gold extraction (Eisler, 2004; Yang et al., 2017). It is necessary to remove arsenic and antimony from gold ...Web
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Selective separation of antimony from a Sb-Fe mixed solution by hydrolysis and application in the hydrometallurgical process of antimony extraction. Long-gang Ye Zhen Ouyang Yong-ming Chen H. Wang Xiao ... the feasibility, mechanism and process characteristic of treating low-grade antimony ore by bath smelting-continuous fuming …Web
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This work aims to shed light on the leaching kinetics of antimony from stibnite ore in potassium hydroxide (KOH) solution. ... Ubaldini et al.17 developed a new process for the extraction of antimony and gold from refractory auriferous stibnite. They used alkaline sulfide leaching as pretreatment for Sb recovery. Consequently, the gold …Web
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A new pyrometallurgical process to extract antimony from stibnite concentrate was proposed. Thermodynamic analysis of extraction process was conducted. Based on the thermodynamic analysis, the influence of volatilization temperature, volatilization time, blowing oxygen, low melting point slagging on the volatilization rate of …Web
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Tetrahedrite conventional leaching process is strongly chemical-dependent process which needs high temperature values for optimum extraction of antimony. However, this study revealed the fact that antimony dissolution from tetrahedrite by K 2 S and BaS is more economical and environmentally friendly than Na 2 S since mechanical …Web
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The gold in refractory gold ore mainly exists in submicroscopic form, or is encapsulated in the crystal lattice of pyrite and arsenopyrite, the extraction efficiency of gold with traditional cyanide process is extremely low [15,16,17,18,19]. For effective extraction of gold in this type of refractory gold mine, pretreatment is required before ...Web
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1000˚C. It is therefore inferred that the optimum temperature for the extraction of antimony metal through this process is 975˚C, as further increase in the tem-perature was found to be ineffective (Figure 2). 3.2.2. Effect of Reaction Time The effect of time on extraction of antimony from stibnite ore was studied and results are given in ...Web
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The flowchart comprised two distinct processes: the metallic antimony extraction and the gold extraction from the nitric acid leaching cake. The first step …Web
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Moreover, China's antimony ore mining accounted for 52% of the world's antimony mining in 2020, with extraction of antimony ores also ranking first in the world . With the increasing development of mining technology, the production process of antimony mineral resources, mainly jamesonite and stibnite, has become increasingly mature.Web
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Fig. 1 shows this new hydrometallurgical process for antimony extraction. This process involves chlorination–oxidation leaching that inhibits the formation of most impurities in solution. By controlling the leaching potential, S 2 − in stibnite is oxidized to elemental sulfur, and antimony becomes SbCl 3 in solution.Web
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Antimony is a strategic critical mineral that is used in all manner of military applications, including the manufacture of armor piercing bullets, night vision goggles, infrared sensors, precision ...Web
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A new process for one-step extraction of antimony in low temperature from stibnite concentrate by reductive sulfur-fixation smelting in sodium molten salt, using iron oxide as sulfur-fixing agent, …Web
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Sb is primarily emitted to the living environment due to anthropogenic activities such as coal-combustion and smelting operations of antimony ore extraction 6. Antimonite (SbIII) and antimonate ...Web
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It can be illustrated that the pre-oxidation of the gold ore by Mn-oxide oxidation controlled Au-extraction efficiency, and with the dissolution of 93.3 % As and 92.5 % Sb from the gold ore in the usage of Mn-oxide-assisted hydrochloric acid oxidation process, it obtains Au extraction ratio of 97.2 % by chlorination leaching.Web
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Antimony metallurgy is the technology that extracts antimony metal from antimony ores or produces antimony compounds. Antimony was discovered in the …Web
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China is the largest producer of antimony in the world (Yang, 2009). The most important antimony resource exploited in China is the antimony ore containing stibnite (Sb 2 S 3). Traditionally, extraction of antimony from stibnite involves a two-step pyrometallurgical process including roasting and carbothermal reduction.Web
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The presence of other metals mainly depends on the ore concentrate feed to the process. The most common elements are usually identified as being Cu, Pb, Ni, and Fe. Hydrolysis appears to be the most appropriate technique for antimony extraction, although other procedures may be of valid application to the case study.Web
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Ultrasound-intensified Leaching of Gold from a Refractory Ore. The effect of ultrasonic energy on the pretreatment and leaching of gold from the refractory ore was investigated. Firstly, the refractory ore was pretreated with …Web
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A full quadratic model was selected to process the experimental results, with the extraction of antimony in the solution serving as the response variable. The chosen variables included the liquid-to-solid (L:S) ratio in the pulp, ranging from 1.2 to 6.7, and the concentrations of NaOH and Na 2 S, ranging from 16.4 to 43.5 g/L and 16.2 to 61.1 g ...Web
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The main valuable metal was antimony (2.22%) in the form of NaSb(OH) 6 and the other elements were Na (20.07%) and As (16.60%). The phase composition was characterized by X-ray diffraction (XRD), the results. Theoretical principles of acid leaching. The leaching process was designed to separate NaSb(OH) 6 from arsenic-bearingWeb
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The effects of various leaching factors on extraction of antimony and inhibition of gold are investigated, and through single-factors experiments, the suitable process conditions are determined as follows: Na 2 S concentration of 60–80 g/L, NaOH concentration of 30–50 g/L, liquid–solid ratio of 1.5–2, leaching at 65–90 °C for 5 min ...Web
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Accordingly, the optimized process results are determined as follows: the extraction rates of antimony and gold reach 94.15% and 3.37%, respectively, under Na 2 S concentration of 85.66 g/L, NaOH concentration of 45.5 g/L, liquid–solid ratio of 1.5, leaching at 90 °C for 5 min, which are very consistent with the predicted values of the ...Web
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Antimony leaching from tetrahedrite-bearing ores was typically carried out by using Na 2 S-NaOH solutions. In the current paper, the detail mechanism of antimony …Web
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Antimony is the 63rd-most abundant element in Earth's crust. It is less abundant than tin, arsenic and the rare earths, but more so than bismuth, mercury and silver. Antimony tends to concentrate in sulfide ores along with copper, lead and silver. It occurs sparingly as a free element, but when it does it is usually in association with ...Web
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The ultrasound increases the extraction rate of copper from oxidized ore from 32% to 78%, shorts the reaction time and reduces energy consumption (Swamy and Narayana, 2001). The introduction of ultrasound greatly increased the leaching rate of Pb and Sb from lead-rich and antimony-rich oxidizing slag, or significantly shortened the …Web
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Antimony oxide ore beneficiation has become one of the world's largest mineral processing conundrums. In recent years, many experimental studies dealing with antimony oxide ore have been carried out, resulting in new technical achievements. Much attention has been paid to improving the mineral processing technology of antimony …Web
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