Scientists believe that new economical and environmentally friendly methods for extracting antimony and gold will be in demand. Gold is widely used in the jewelry industry and medicine, antimony is used in the production of semiconductors, optical glass, enamels, ceramics and phosphors.
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Objective: Extract antimony ore from deposits through surface or underground mining. Methods: Open-pit mining for shallow deposits. Underground mining for deeper reserves. Key Output: Raw antimony ore containing impurities. 2. Crushing and Grinding. Objective: Reduce ore size for easier processing.
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Based on the advantages and disadvantages of every process to extract antimony from antimonial refractory gold concentration, a clean process is proposed, and the process flow is presented in Fig. 1. Firstly, antimony will dissolve into the solution as sodium thioantimonite by leaching of antimonial refractory gold concentration with sodium ...
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Recovery of gold from refractory ores requires a pretreatment to liberate the gold particles from the host mineral. In particular, in the case of stibnite (Sb2S3), the antimony (Sb) forms stable ...
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Cyanide leaching is a method commonly used for extracting gold and silver, but it can also be applied to certain antimony ores. Sodium cyanide (NaCN) is typically used as
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Also, in some gold bearing ores and concentrates, conventional cyanide leaching is not the best method for gold extraction. This is due to gold particle encapsulation, cyanicides or pregrobbing carbon such as found in refractory ores and concentrates. Hence, there is much interest in developing an alternative way to extract gold from ore.
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Pyrometallurgical technologies are primarily employed for sulfide–antimony ores and concentrates with a low arsenic content (up to 1%) and that contain gold [2]. The choice and justification of …
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Hence, it is difficult to extract gold from ores using cyanide leaching, even after ultra-fine grinding [4]. ... The former contains a lot of impurities such as arsenic, sulfur, and antimony. The ...
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remove antimony from ores and concentrates containing gold. The use of one or another method of processing antimony-containing ores and concentrates depends on the antimony content in them and its form of location (Table 1). Antimony metallurgy is intended for the production of metallic antimony by pyrometallurgical and hydrometallurgical methods.
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Scientists believe that new economical and environmentally friendly methods for extracting antimony and gold will be in demand. Gold is widely used in the jewelry industry and medicine, antimony is used in the …
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The results show that it is impractical to remove arsenic (As) and antimony (Sb) from downstream processes by using selective flotation. It was observed that 22% of total Sb and 31.1% of As remained in the final tailings. In this case, 24% of gold was recovered in the initial stage of flotation.
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Antimony is also alloyed with tin to make pewter items such as plates, pitchers and cups, used mostly for decoration. One use of antimony, which is declining, is to make type metal for newspapers and magazines. Antimony is one …
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For centuries mankind has been using antimony, a semi-metallic chemical element that in its non-metallic form is a grey powder and when metallic is hard, brittle and silvery. ... The electrolytic silver refining method is similar to that of gold's, but the silver anodes are dissolved in a nitric acid bath. This process can produce silver at ...
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In order to overcome this problem, Yang et al. utilized the sodium sulfide to extract the antimony from refractory gold ore, and the leaching recoveries of antimony and arsenic were 96.64% and 0. ...
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Cyanidation, a process used for over a century to extract gold from free milling ores, is so effective that it can economically treat low-grade ores (0.5 g/t Au). ... The antimony content of the feed was monitored against the performance of the plant with and without addition of lead nitrate (Figure 26.10). An improvement of about 5% gold ...
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Slurry electrolysis was also presented to extract antimony from high arsenic and gold-containing stibnite ore to produce cathode metal antimony (Zhang et al., 2019). In general, hydrometallurgical ...
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Gold and antimony are associated in a number of gold ores with resulting complications in the gold extraction process. The principal mineralogical forms, in which gold occurs in these ores are metallic gold, free-milling, or associated with silicate gangue, as metallic gold associated with stibnite [Sb 2 S 3] will be seen from the processes used to treat such …
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XU et al [108] proposed a multi-stage leaching process to extract gold and silver from the complex polymetallic sulfide ores containing high concentrations of iron, arsenic and antimony using nickelâˆ'ammoniaâˆ'thiosulfate solutions. The technique mainly consists of three steps: Oxygen pressureâˆ'sulfuric acid leaching ...
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Avraamides et al. (2000) argued that the use of stibnite in assessing the effect of antimony on gold dissolution made it difficult to differentiate between the impacts of antimony and sulfur species. They concluded that the SbO + ion could also inhibit gold dissolution but only when the gold was in a relatively pure form. Their study on stibnite ore from the Big Bell mine …
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Process flow-sheet for gold and antimony recovery from stibnite. Hydrometallurgy (2000) O. Celep ... pollution from cyanide use. In this work, thiourea leaching combined with mechanical activation was employed to extract gold from a refractory gold concentrate calcine. The optimal reaction conditions were determined as: 2.5 g/L thiourea, 2 g/L ...
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conventional leaching process. The gold ores that contain As must be crushed in order to expose the gold for leaching with an appropriate gold leaching agent (Yanget al, (2008); Zhou et al, 2009) In order to maintain the sustainable use of gold resources, effective pre- treatment and processing of complex gold ores is urgently required.
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The raw material, gold-bearing sludge with arsenic and antimony, was collected from a gold smelter in Xinjiang Province, China. In the smelter, the chlorination roasting method was used to extract precious metals (gold and silver) from the cyanide tailing, which is usually contains gold 5–25 g/t (Ellis and Senanayake, 2004).
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Electrodeposited antimony can be treated with sulfuration–volatilization technology, which causes antimony to volatilize in the form of antimony sulfide. During this process, gold is enriched in the residue, thereby realizing the value-added use of antimony and the recovery of gold. In this study, the thermodynamic conditions of antimony sulfide were …
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The use of halides as gold lixiviants occurs earlier than cyanide (La Brooy et al., 1994). Chlorination was extensively used in gold extraction in the late 19th century until the
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The antimony-rich froth is collected and further processed to obtain a concentrated antimony product. (Flotation Machines) 3. Hydrometallurgical Techniques. Hydrometallurgical techniques involve the use of aqueous solutions to extract antimony from its ores. These techniques are often employed for low-grade ores or complex ore compositions.
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This is predicated upon using the method of extracting antimony, gold, silver, lead, zinc, copper, based on the ore as a natural source of nutrition for microorganisms during leaching period [6]. A promising pyrometallurgical method for processing complex mineral ores and concentrates is chlorination roasting [7-
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Commecial application of thiourea in the extraction of gold is performed in Australia on antimony concentrate, on carbonaceous concentrate in China and in roasted zinc ores in France. For Internal Use Only. ... Appendix B Flowsheet for US Patent 7,498,006B2 Process for extracting gold in arsenic-containing concentrate of gold. For Internal Use ...
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The application of slurry electrolysis for high-arsenic antimony–gold concentrate treatment provides several benefits, including a short treatment process, complete separation of antimony and ...
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