sulfide precipitation antimony precipitation sandrail tube spec

Precipitation and ageing of antimony (III) sulphide ...

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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Removal of antimony (Sb(V)) from Sb mine drainage ...

The principal compound in the precipitate was stibnite (Sb 2 S 3) at pH 7 and pH 9. The Sb(V) removal mechanism is sulfate-reduction and sulfide oxidization–precipitation, different from the conventional SRB-precipitation processes for heavy metals. The Sb(V)/sulfate ratio is noted an essential parameter affecting the Sb removal efficiency ...

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crusher sulfide precipitation antimony precipitation

Acid autoclave leaching of antimony plant sulfide residue . leaching of antimony plant residue, precipitation and subsequent cementation of silver,. More details It was found that tellurium precipitated by sulfur dioxide from solutions ... off the insoluble sulfide precipitate), first precipitate the sulfides of arsenic, antimony.

Removal of antimony (Sb(V)) from Sb mine drainage ...

The principal compound in the precipitate was stibnite (Sb2S3) at pH 7 and pH 9. The Sb(V) removal mechanism is sulfate-reduction and sulfide oxidization-precipitation, different from the conventional SRB-precipitation processes for heavy metals. The Sb(V)/sulfate ratio is noted an essential parameter affecting the Sb removal efficiency from SMD.

Cited by: 54

Antimony trisulfide - Wikipedia

OverviewPreparation and reactionsStructure

Antimony trisulfide (Sb2S3) is found in nature as the crystalline mineral stibnite and the amorphous red mineral metastibnite. It is manufactured for use in safety matches, military ammunition, explosives and fireworks. It also is used in the production of ruby-colored glass and in plastics as a flame retardant. Historically the stibnite form was used as a grey pigment in paintings produced in the 16th century. It is a semiconductor with a direct band gap of 1.8-2.5 eV. With suitable doping,

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Bioremediation of antimony from wastewater by sulfate ...

Metal sulfide precipitation by sulfate-reducing bacteria (SRB) is considered to be a promising method for antimony (Sb) removal from wastewater. Moreover, the addition of ferrous ions (Fe(II)) to the SRB system is expected to increase the metabolic activity of SRB.

Author: Yanni Xi, Shiming Lan, Xin Li, Yangtao Wu, Xingzhong Yuan, Chang Zhang, Liu Yunguo, Yicai Huang, Ban...

Precipitation For Antimony Ore - ilguardacielo.it

Jul 17, 2012 Iron precipitation: Rich sulfide ore or liquated antimony sulfide (crude antimony) is reduced to metal by iron precipitation This is illustrated in Eq. . This process consisting of heating molten antimony sulfide in crucibles with slightly more than the

US5290338A - Antimony separation process - Google Patents

An antimony recovery process is disclosed in which antimony-containing material is leached in a solvent including elemental sulfur and a caustic to preferentially leach antimony. The antimony-containing leach liquor from the leaching step is separated from the insoluble residue by filtration, and the antimony compounds in the separated leach liquor are crystallized to separate the antimony ...

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Antimony - Wikipedia

Antimony is a chemical element with the symbol Sb (from Latin: stibium) and atomic number 51. A lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite (Sb 2 S 3).Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name kohl. Metallic antimony was also

Pronunciation: UK: /ˈæntɪməni/, (AN-tə-mə-nee), US:

Sulfide versus hydroxide precipitation - BioMineWiki

A high degree of selective metal precipitation is possible with sulfide, as opposed to hydroxide precipitation. Metal sulfide sludges generally are more dense and stable than metal hydroxide sludges , exhibiting better thickening and dewatering characteristics than corresponding metal hydroxide sludge which facilitates further processing.

Sulfide versus hydroxide precipitation - BioMineWiki

A high degree of selective metal precipitation is possible with sulfide, as opposed to hydroxide precipitation. Metal sulfide sludges generally are more dense and stable than metal hydroxide sludges , exhibiting better thickening and dewatering characteristics than corresponding metal hydroxide sludge which facilitates further processing.

US5338460A - Sulfide precipitation of heavy metals from ...

A process is disclosed for the removal of dissolved heavy metals from aqueous solution contaminated therewith wherein at least one of said heavy metals is reacted with a water-soluble inorganic sulfide or hydrosulfide at a defined elevated temperature and a controlled pH of between about 2 to about 3.5 to thereby precipitate heavy metal sulfide, and thereafter separating the precipitate

Antimony - Wikipedia

Antimony is a chemical element with the symbol Sb (from Latin: stibium) and atomic number 51. A lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite (Sb 2 S 3).Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name kohl. Metallic antimony was also

Sulfide precipitation of heavy metals - EPA - Home Page ...

A full-scale sulfide precipitation process (Na2S as sulfide source) with a capacity of 1.0 x 106 gallons per day is operating at Boliden Metall Corporation of Sweden to treat smelter (Cu, Pb, Zn smelting) wastewaters. One copper smelter in Japan has a sulfide precipitation process to recover heavy metals as sulfides.

Precipitation of antimony from the solution of sodium ...

Precipitation of antimony from the solution of sodium thioantimonite by air oxidation in the presence of catalytic agents Article in Journal of Central South University of

Removal of antimony (Sb(V)) from Sb mine drainage ...

Request PDF On Aug 12, 2013, Huawei Wang and others published Removal of antimony (Sb(V)) from Sb mine drainage: Biological sulfate reduction and sulfide oxidation–precipitation Find, read ...

crusher sulfide precipitation antimony precipitation

crusher sulfide precipitation antimony precipitation , PRODUCTION precipitation with iron scrap; this process consists essentially of heating molten , chilled batteries are fed to an enclosed single-roll crusher , sulphate to sulphide, followed by precipitation of heavy metal sulphides, is the , antimony, aluminhun and uranium from . ...

Recovery of antimony compounds from alkaline sulphide ...

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.

Antimony: Chemical reactions Pilgaard Elements

Reaction of antimony with sulfide. Sb(III) is precipitated by hydrogen sulfide in 0.4M hydrochloric acid: 2 Sb 3+ (aq) + 2 S 2− (aq) Sb 2 S 3 (s) [orange/red] The precipitate can be dissolved in sodium hydroxide sodium sulfide and strong hydrochloric acid

Metal Sulfide Precipitation - Pollution Prevention

Apr 25, 2020  The most soluble sulfide (MnS) listed in Table 3 would shown an equilibrium concentration of [Mn] = Kspl 10-7 = 10~7 mol/L = 5.5 mg/L under these precipitation conditions. In practice, processes are designed to operate with lower sulfide concentrations in order to minimize the H2S odor in the working environment.

Review of Metal Sulfide Precipitation Request PDF

Sulfide precipitation plays an important part in hydrometallurgical processes with the several merits over hydroxide precipitation, including lower solubility of precipitate, higher selectivity ...

Antimony and Arsenic Sulfide Scaling in Geothermal Binary ...

Although arsenic sulfide has higher solubility than antimony sulfide, at low temperatures arsenic(III) sulfide can also precipitate and cause the same problems as stibnite. Re-evaluation of the thermodynamic data has led to more accurate data for stibnite equilibrium thermodynamics and has been verified in a

Antimony Passive Treatment by Two Methods: Sulfate ...

In the other treatment method, antimony was removed through precipitation as antimony sulfide (stibnite) in a sulfate-reducing bioreactor. Each system consisted of a 1000 liter plastic tub, filled with the treatment media. The loading ratio of iron oxyhydroxide in the adsorption chamber was 253 grams of precipitate per liter of water.

THE ALKALINE SULFIDE HYDROMETALLURGICAL

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

Review of Metal Sulfide Precipitation Request PDF

Sulfide precipitation plays an important part in hydrometallurgical processes with the several merits over hydroxide precipitation, including lower solubility of precipitate, higher selectivity ...

Antimony and Arsenic Sulfide Scaling in Geothermal Binary ...

Although arsenic sulfide has higher solubility than antimony sulfide, at low temperatures arsenic(III) sulfide can also precipitate and cause the same problems as stibnite. Re-evaluation of the thermodynamic data has led to more accurate data for stibnite equilibrium thermodynamics and has been verified in a

Antimony Passive Treatment by Two Methods: Sulfate ...

In the other treatment method, antimony was removed through precipitation as antimony sulfide (stibnite) in a sulfate-reducing bioreactor. Each system consisted of a 1000 liter plastic tub, filled with the treatment media. The loading ratio of iron oxyhydroxide in the adsorption chamber was 253 grams of precipitate per liter of water.

THE ALKALINE SULFIDE HYDROMETALLURGICAL

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

Separation of Toxic Heavy Metals by Sulfide Precipitation ...

Sulfide precipitation with Na 2 S is found to be highly effective to obtain a high degree of separation of heavy metal cations (Cd, Zn, Cu, and Pb) and of the oxyanions of arsenic and selenium from complex wastewaters. The metal separation characteristics are evaluated with a dilute synthetic mixture and with an actual copper smelting plant wastewater.

Antimony - Arizona State University

Antimony, Sb 3+ Most common oxidation states: +3, +5 M.P. 630 o. B.P. 1380 o. Density 6.69 g/cm 3. Characteristics: Brittle, silvery. Not very active, but reacts with oxygen, sulfur and chlorine at high temperatures. Characteristic reactions of Sb

EP0806487A1 - Extraction of antimony from sulfide ores by ...

From the solution of antimony sulfur salts pure Sb 2 S 3 is precipitated by acidification and this sulfide, separated from the solution by filtration, is leached with a ferric fluoborate based electrolyte which oxidizes sulfide into elemental sulfur and dissolves antimony

Antimony Sulfide AMERICAN ELEMENTS

Antimony Trisulfide is a moderately acid soluble Antimony source for uses compatible with sulfates. Antimony Sulfide is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered.

WO2008052324A1 - Selective precipitation of metal sulfides ...

A method for recovering zinc ions by selective sulfide precipitation from an aqueous solution comprising zinc ions and metal ions of a metal that precipitates as metal sulfide at a pH lower than a pH at which zinc ions precipitate as zinc sulfide, the method comprising contacting the aqueous solution with a source of sulfide to precipitate the metal ions as the metal sulfide

Antimony Removal Technology for Mining Industry Wastewaters

As an example, antimony precipitation with chemicals such as lime and sulfide may be Yery ?ffective in reducing the concentration of antimony from 100 mg/1 to 2 to 3 mg/1 (97 to 98 percent removal) in a given wastewater, but as the solubility limits of antimony hydroxides and sulfides are approached, such as for a 2 mg/1 antimony-containing ...

US4078917A - Extraction of antimony trioxide from antimony ...

Disclosed is a process for extracting antimony trioxide from antimony sulfide ore concentrate by solubility differential of the trioxide in lower alkanol solutions of sodium or potassium hydroxide and wherein the total amount of water contained in the concentrate, the alkanol and the hydroxide is not more than 26.52 volume percent of the antimony sulfide content; which process

Sulfide - Wikipedia

Sulfide (British English also sulphide) is an inorganic anion of sulfur with the chemical formula S 2− or a compound containing one or more S 2− ions. Solutions of sulfide salts are corrosive. Sulfide also refers to chemical compounds large families of inorganic and organic compounds, e.g. lead sulfide and dimethyl sulfide. Hydrogen sulfide (H 2 S) and bisulfide (SH −) are the

Quia - Chemistry-Color of Sulfide Precipitate

A B; Lead (Pb) Brown-black (PbS) Copper (Cu) Black (CuS) Silver (Ag) Black (Ag2S) Mercury (Hg) Black (HgS) Nickel (Ni) Black (NiS) Iron (Fe) Black (FeS) Cadmium (Cd)

Basic sulfide precipitates Flashcards Quizlet

An acidic solution containing zinc ions gives a light green precipitate K2Zn3(Fe(CN)6)2 Another confirmatory test for zinc is Addition of thioacemtide which gives a white zinc sulfide