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leaching antimony from oxide ore
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The metallurgy of antimony
A description of each of these as well as oxide reduction follows (Motoo, 1974, Vladislav, 1981, Yong-Fu and Wei-Tao, 1981). Oxide volatilization: Removal of antimony as the volatilized trioxide is the only pyrometallurgical method suitable for low grade ores. Combustion of the sulfide components of the ore supplies some of the heat; …
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Gold Leaching from an Oxide Ore Using Thiocyanate as …
maximize gold dissolution, e.g., a ratio between 2 and 20 is ideal for a sul de gold ore12 and a ratio <1 is ideal for an oxide gold ore.5 fi Temperature appears to be less important: the gold ...
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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%, …
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Environmentally Friendly Leaching of Antimony from Mining …
Oxidative leaching can be particularly effective for refractory antimony ores or concentrates that are difficult to treat via conventional methods. The reaction …
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Antimony Ore Dressing and Smelting Methods
Whether it is a single sulfide antimony ore or a sulfide-oxide mixed antimony ore, gravity separation can be used for sorting. Advantages: Gravity separation can effectively sort a large amount of ...
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Production of copper cathode from oxidized copper ores by …
2.2. Leaching experiments. In this research the copper oxide and copper concentrate obtained from copper precipitation step were leached. The leaching experiments were carried out in a flask with mechanical stirrer under the following condition: H 2 SO 4, 2 molar; leaching time, 40 min; at the room temperature. The L:S ratio (v/w) …
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A Selective Method for Chemical Extraction of Antimony …
In the current paper, the detail mechanism of antimony leaching from tetrahedrite-rich concentrate via K 2 S and BaS lixiviants was investigated for the first …
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Antimony Metallurgy | SpringerLink
Fig. 1. Typical pyrometallurgical antimony production process using sulfide ore. Full size image. Antimony Trioxide Production. There are four processes: (1) …
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The exposure to and health effects of antimony
INTRODUCTION. Antimony (Sb) (atomic number 51; atomic mass 121.75 g/mol; density 6.684 g/cm 3; melting point 631°C) occurs naturally as a sulphide ore, stibnite (Sb 2 S 3) and valentinite (Sb 2 0 3).The traditional method of treating the ore is to roast it with charcoal or coke and collect the volatile oxide fume (Sb 4 O 6) from which pure …
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Sulphide Leaching
Methods of leaching sulphide ores can be: in absence of oxidizing agents; in presence of oxidizing agents; Bacterial leaching Sulphide Leaching system; Absence of oxidizing agents. Acid leaching: Dilute acids dissolve some metal sulphides with liberation of H 2 S, e.g. ZnS + 2H+ ^ Zn 2+ + H2S. Three types of sulphides can be encountered.
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Selective leaching of arsenic and antimony from a
The present work aimed to evaluate the selective leaching and precipitation processes of arsenic in oxide form, As 2 O 3, from the dust collected from ESP of a Pierce−Smith copper converter.
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A Comparative Study of Cyanide and Chloride
A Comparative Study of Cyanide and Chloride – Hypochlorite Gold Leaching of Oxide Ore from Placer, Surigao Del Norte ... antimony, and sulfur. It occurs with mercury as gold amalgam. It is generally present to a small extent in iron pyrites; galena, the lead sulfide ore that usually contains silver, sometimes also contains appreciable amounts ...
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CN103866121A
The invention discloses a method for preparing sodium antimonate from an antimony oxide ore via an alkaline approach. The method comprises the following steps: (1) leaching the antimony oxide ore, (2) purifying filtrate, and (3) oxidizing the purified filtrate. The method is high in recovery rate, the leaching rate of antimony is 95-99%, the direct …
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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 humidity and 31-35 o C for 37-44 days. After leaching with distilled …
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Beneficiation of antimony oxide ore: A review | Request PDF
Indeed, antimony oxides are difficult to recover by froth flotation, especially due to their poor response to xanthate collectors (Lager and Forssberg, 1989a) and also …
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Ozonation leaching of a complex sulfidic antimony ore in
Arsenic pre-removal from antimony oxide powder by roasting with pyrite (FeS2) for decreasing arsenic transfer and pollution in the followed antimony smelting process. ABSTRACT Most of arsenic in the stibnite enters the antimony oxide powder after a traditional volatilization smelting/roasting process and further transfers into an arsenic …
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Antimony, a pollutant of emerging concern: A review on …
1. Antimony – general aspects. Antimony comes under group 15 of the periodic table with ground state electronic configuration [Kr]4d 10 5s 2 5p 3. 121 Sb (57.21% abundance) and 123 Sb (42.7% abundance) are the two stable isotopes of antimony. Antimony can possess different oxidation states (such as +5, +3, 0, −3 and −5), but …
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Antimony leaching from polyethylene terephthalate (PET) …
Microwave digestion revealed that the PET plastic used by one brand contained 213±35 mgSb/kg plastic; leaching of all the antimony from this plastic into 0.5 L of water in a bottle could result in an antimony concentration of 376 ppb. Clearly, only a small fraction of the antimony in PET plastic bottles is released into the water.
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Minerals | Free Full-Text | Preparation of Antimony Sulfide …
However, during this treatment, up to 10.3% of the gold in the ore will be dissolved into the leaching solution, and this gold will be precipitated during electrowinning before the antimony in the leaching solution is reduced; the antimony produced in this solution system contains not only a large amount of sodium salt, but also gold [15,16,17 ...
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Availability, Toxicology and Medical Significance of Antimony
The principal antimony ore exists in the form of ... The storage of plastic water bottles at higher temperatures increases antimony leaching, further contaminating the water contained within ... (III), Bi(III), Zn(II) Oxides, and Antimony Compounds from Metal Oxide Varistors. J. Sustain. Met. 2018; 4:194–204. doi: 10.1007/s40831-017-0156 …
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A Review on Pyrometallurgical Extraction of Antimony from …
Antimony is classified as a critical/strategic metal. Its primary production is predominated by China via pyrometallurgical routes such as volatilization roasting—reduction smelting or direct reduction smelting. The performance of most of the pyro-processes is very sensitive to concentrate type and grade. Therefore, technology …
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A Selective Method for Chemical Extraction of Antimony …
Antimony leaching from tetrahedrite-bearing ores was typically carried out by using Na2S-NaOH solutions. In the current paper, the detail mechanism of antimony leaching from tetrahedrite-rich concentrate via K2S and BaS lixiviants was investigated for the first time. Sample was characterized in terms of chemical, mineralogical, and …
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(PDF) Ozonation leaching of a complex sulfidic antimony ore …
Raschman and Sminčáková (2012) reported that more than 90% antimony recov- Most of antimony produced from antimony-bearing ores is used as ery during 60 min leaching of a stibnite ore at 19 °C using an alkaline so- flame retardants, catalysts in plastics production, pigments in paints lution containing 1% Na2S and 1% NaOH (w/w) has been ...
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Leaching of Gold from an Oxide Gold Ore with …
The leaching behavior of gold from an oxide gold ore using copper–tartrate–thiosulfate solutions has been investigated. Experimental parameters, including temperature, initial pH, and concentrations of copper tartrate and thiosulfate, were systematically studied. The capability of gold leaching using copper–tartrate–thiosulfate …
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Comparative Gold Deportment Study on Direct Leaching …
Tested oxide ore sample showed low recoveries, according to the existing flow sheet in the CIL plant. Cyanidation tests showed some preg-robbing effect on organic matter. Flotation of carbonatious matter with consecutive leaching of flotation tails proved to have better recoveries than direct leaching by reducing preg-robbing on carbon three …
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Trivalent and Pentavalent Antimony
1.1.1. Nomenclature, synonyms, trade names, molecular formulae, and relative molecular mass. Multiple agents are considered in this monograph as follows: the trivalent antimony compounds antimony(III) oxide (Sb 2 O 3) [antimony trioxide], antimony(III) chloride (SbCl 3), antimony(III) potassium tartrate (C 8 H 10 K 2 O 15 Sb 2 or the anhydrous …
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en/leaching antimony from oxide ore.md at main · …
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Gold Leaching from an Oxide Ore Using Thiocyanate as a …
In this study, the following leaching parameters were tested to optimize the gold recovery for the first time from an oxide ore using the response surface methodology: initial thiocyanate ...
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Process Flow-Sheet for Gold and Antimony Recovery from Stibnite
Leaching of Sb 2 S 3 ore in an alkaline system involves the combination of sodium sulphide (Na 2 S) and sodium hydroxide (NaOH) to form a solution of sodium thioantimonite as shown in reactions 1 ...
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Leaching and solvent extraction purification of zinc from …
The optimum alkaline leaching conditions of 5% NaOH, temperature 90 to 95 °C in 90 min was obtained for leaching zinc from an oxide ore 17. The column leaching of low grade zinc oxide ore ...