CT = Sb concentration when no precipitation occurs (Initial amount of Sb (5 mg/L) added) CE = Sb concentration when inhibitors are present. Dispersion Another set of tests were done to evaluate the dispersency of the antimony sulfide. This procedure was used to determine the relative efficacy of the antimony sulfide dispersant, using

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A mixing time of 40 to 60 minutes is adequate for initial sulfate precipitation. The sulfate content of the wastewater can be lowered to 4000 to 5000 mg/L, with the resulting gypsum easily dewatered in a filter or belt press. Approximately 1.8 pounds of gypsum are precipitated per pound of sulfate.

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Iron Precipitation: Rich sulfide ore or liquated an timony sulfide (crude antimony) is reduced to metal by iron precipitation This is illustrated in equation 6. This process consisting of heating

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0.2 Antimony sulphide occurs naturally as the prey-black mineral stibnite, the most plentiful of the antimony containing minerals. It may be pre­ pared by direct reaction of the elements, or by precipitation with hydrogen sulphide from acid solutions of the trichloride or antimonites. 0.3 Antimony sulphide is mainly used in making safety ...

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Antimony(V) sulfide. . Antimony sulfide (Sb2S5) Antimony Red. Antimonic sulfide. Antimony pentasulfide, pure. Antimonial saffron. Antimony sulfide golden. Golden antimony sulfide. Diantimony pentasulphide [bis(sulfanylidene)-lambda5-stibanyl]sulfanyl-bis(sulfanylidene)-lambda5-stibane. EINECS 215-255-5. S5Sb2. Goldschwefel. C.I. 77061 ...

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The objective of this research was to study the precipitation of Sb and the stability of Sb 2 S 3 during treatment of synthetic Sb(V) wastewater by sulfate-reducing bacteria (SRB). We investigated the transformation and precipitation of Sb, as well as the re-dissolution of Sb 2 S 3 under different pH and carbon sources. The results showed that the precipitation of aqueous Sb and the re ...

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Published experimental data on the solubility of Sb2S3 and As2S3 in sulfide solutions are used to determine the stoichiometry and stability constants of antimony and arsenic sulfide complexes at ...

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In the precipitation process, the addition of hydrogen peroxide to the alkaline sulphide leachate prompts the precipitation of antimony as NaSb(OH) 6. The result also implies that < of stoichiometric hydrogen peroxide is required to completely oxidize the total amounts of both Sb 3 + and S 2 − in the solution and to quantitatively ...

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Antimony, Sb 3+ To 10 drops of solution, add 6 M NH 3 (aq) until neutral. Make the solution acidic by adding one or more drops of 6 M HCl. Add 1 mL of thioacetamide and stir well. Heat the test tube in the boiling water bath for 5 minutes. If antimony is present, a red orange precipitate of antimony sulfide …

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Antimony(III) Sulfide, Powder, (Metals Basis), 10g For Research & Development Not for drug, human, animal, or food use Certificate of Analysis: Appearance (Color) Gray Appearance (Form) Powder Assay (Metals Basis) ICP Analysis Confirms antimony component Total Metallic Impurities (ppm) - ND CAS: FORMULA: Sb2S3

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iron precipitation since stibnite is a sulfide ore. The process is based on a dis-placement reaction in which iron displaces antimony in the sulfide mineral, as a result of which antimony sulfide is converted to antimony metal and iron sulfide is formed as a by-product which can be utilized for production …

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A synthetic solution containing 45 g/L Sb prepared by dissolving antimony (III) sulphide chemical in NaOH-Na2S system was used in the precipitation experiments.

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I.Effect addition onthe precipitation antimony I'hc was starred the quick addition solution to an solution, the additive. The resulting final of the b.5. progress of monitored under a E the the suspension and filtrate for antimony additives dissolved, as in distilled water to the the sulphide solution. additives to allow heating their concentrated solutions under (about 85 minutes to reach ...

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To investigate the precipitation of antimony from the pregnant leach liquor, synthetic solutions were prepared by dissolving antimony (III) sulphide (Sb 2 S 3, 98% metal basis) in alkaline sulphide solutions containing 61.5 g/L S 2 − and 30 g/L NaOH in the presence of hydrogen peroxide (H 2 O 2, 30%w/w) as an oxidant.

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ANTIMONY, AND TIN By ... precipitation with hydrogen sulphide in a nitric acid solution of the sample.8 With nonferrous materials the sulphides are usually obtained after first separating the sulphides, such as copper and lead, which are insoluble in alkaline sulphide solution. With solders the precipi­

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Manganese sulfide is more favorable for antimony precipitation than oxide inclusions. The chemical composition of antimony-enriched phases is close to that of FeSb, which is consistent with the result calculated by the disregistry of lattice parameters between antimony particles and the inclusions.

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The iron precipitation method is used to produce antimony metal from concentrated antimony ores or from the crude antimony issued from the liquation process. In this process, scrap iron is added to molten Sb 2 S 3 to displace the antimony in order to form antimony metal and a matte which contains iron sulfide.

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The successful cyanidation of gold ores containing appreciable amounts of arsenic or antimony sulphide minerals such as orpiment, realgar, and stibnite is usually difficult or even impossible.Extractions are low and the solutions soon become 'foul.' The gold in such ores could be free and uncoated, and no trouble in dissolving it in clean cyanide solutions would be expected.

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Chemical reactions for antimony. Antimony is dissolved in hot concentrated sulphuric acid, H 2 SO 4, or nitric acid, HNO 3, forming Sb(III) solutions.The sulphuric acid reaction produces SO 2.Antimony does not react with hydrochloric acid in the absence of oxygen.

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transport and precipitation chemistry of in antimony aqueous sulphide media at elevated temperatures. We have conducted solubility experiments with natural stibnite in a flow-through apparatus to determine the solubility of stibnite in aqueous sulfide solutions from pH 6.0 to 12.5 and sulfide concentrations from 0.002 to 0.2 mS. total. at 25˚C.

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What is antimony sulphide? Antimony is a metalloid which occurs mainly as the sulphide mineral stibnite (antimony trisulphide Sb2S3) in metamorphic deposits in granites and limestone. Antimony is most commonly used as antimony xide in the manufacture of flame-retardant materials. ... This is a precipitation reaction: Al 2O 3 is the formed ...

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Antimony (III) sulphide has been prepared by precipitation from aqueous solution, under different conditions of concentration, temperature, pH and ageing time. The phase composition, crystallinity and particle size of the precipitates have been studied by X-ray diffraction, electron microscopy and vacuum microbalance technique, and correlated ...

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Sulphide precipitation is applicable for metal containing mine waters when very low effluent concentrations are required or when selective metal removal and recovery are needed. The process can remove lead, copper, chromium (VI), silver, cadmium, zinc, mercury, nickel, thallium, antimony, and vanadium (INAP 2009).

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Abstract. Bismuth antimony sulphide (Bi 1−x,Sb x) 2 S 3 thin films have been deposited on glass substrates using arrested precipitation technique. Ingredients used for the deposition include triethanolamine complex of bismuth, aqueous thioacetamide and antimony trichloride.

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For instance, antimony can be recovered through crystallization [27,28], precipitation [28, 29], or electrolytic [30,31] process from the pregnant alkaline sulfide liquor if it is present in a ...

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in precipitation is the sulphide ion concentration which is controlled by the pH (the hydrogen ion conc.). Therefore, to precipitate cations of group ll (having lower solubility product than those of group llIB), we need relatively small amount of sulphide ion. If the [H+] is controlled to become 0.3 M. the [S2-] …

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A method for extracting antimony from solids containing antimony sulfides is described. An improvement in the method of extracting antimony by oxidation of an aqueous mixture of the solids in an acid or by oxidation of a leaching liquor obtained by leaching the antimony from the solids with an aqueous basic solution comprises conducting the oxidation in the presence of a catalyst comprising a ...

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metric tons consisted of antimony sulfide ores and the crude concentrates. The sole domestic antimony producer in the United States in 2000, Sunshine Mining Company, recovered antimony concentrates as a byproduct of the treatment of complex silver-copper-antimony sulfide ore (Carlin, 2000; USGS, 2002).

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Antimony-Product, Technology, Process, Suppliers, Buyers ... The method used depends on whether the ore is a sulfide, an oxide, or a complex ore, and on the grade, which ranges widely from about 1.5 percent to more than 60 percent antimony by weight.

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containing any number of metals. The alkaline sulfide system is one of these and is essentially a mixture of sodium sulfide and sodium hydroxide. This is a unique hydrometallurgical system as it is a very selective lixiviant for the distinct leaching of tin, gold, antimony, arsenic and mercury (1,2,3,4,5,6,7). Worldwide, it is employed

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