roasting antimony sulfides

Procedure for processing sulphide gold containing arsenic ...

The task is solved in that in the method for processing sulfide gold-arsenic-antimony concentrates and ores, including rihtovanie, roasting, condensation of gaseous compounds of antimony and arsenic, gold leaching of the calcine, according to the invention the mixture is prepared by mixing the concentrate or ore and chloride and/or ammonium ...

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Extraction of metals by roasting and reduction processes ...

Roasting processes. The roasting is a preparation process of ores, where they are heated in kilns of air. The metal sulphides of less noble metals are converted into their oxides. Since many sulphide derivatives also contain traces of other elements, (As), antimony (Sb), selenium (Se) and tellurium (Te), as well as sulfur dioxide.

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Heteronuclear Compounds of Arsenic and Antimony.

During the roasting of copper ores when both arsenic and antimony sulfides are present, the evolution of arsenic is retarded and the volatilization of antimony increased primarily because of the formation of heteronuclear compounds. These heteronuclear compounds exhibit vapor pressure different from ...


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Alkali Leaching of Antimony Sulphide and Electrolytic ...

ALKALI LEACHING OF ANTIMONY SULPHIDE AND EI,ECTROLYLIC RECOVERY OF ANTIMONY}"'ROMTHE RESULTING LEACH SOLUTION by Vincent J. Andrews A Thesis Submitted to the Department of Metallurgy in Partial Fulfillment of the Requirements for the Degree of Bachelor of Soience in Metallurgical Engineering Montana Sohool of Mines Butte, Montana May 7, 19;:38 ...

  • Authors: Vincent J AndrewsAbout: Electrolyte · Stibnite · Antimony · Sodium hydroxide
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(PDF) Kinetics of stibnite (Sb2S3) oxidation at roasting ...

PDF | Experimental work on the oxidation of stibnite (Sb2S3) was carried out at temperatures between 350 and 500 °C and oxygen partial pressures between 1.01 and 21.28 kPa by using a ...


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roasting antimony sulfides

Heteronuclear Compounds of Arsenic and Antimony. During the roasting of copper ores when both arsenic and antimony sulfides are present, the evolution of arsenic is retarded and the volatilization of antimony increased primarily because of the formation of heteronuclear compounds.


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roasting antimony sulfides

roasting antimony sulfides . problem when roasting iron from antimony ore -, Extraction of copper from copper sulfide minerals by roasting and smelting. roasting antimony sulfides - Traduire cette page. Stibnite is a toxic antimony sulfide mineral with an orthorhombic crystal lattice and a source . problem when roasting iron from antimony ore -.


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ANTIMONY TRISULFIDE

Antimony (III) Sulfide; ... The chief ore of antimony is stibnite (Sb 2 S 3, antimony trisulfide) which is produced in China and covers three-fourths of the world's mined antimony. It is also found in isomorphous mixture with arsenic, as allemonite. ... The pure antimony is produced from the ore by roasting it to form the oxide, then reducing ...


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Sulfides, Selenides and Tellurides: rebellious and ...

So what are these nasty problem causing minerals? Well, sulfides, selenides and tellurides are simply minerals which contain sulfur, selenium, and tellurium combined with some metal. Unusually this is the metal we are interested in, but sometimes other valuable metals can be mixed in as trace elements.


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Sulfides - Gold Recovery Methods - ICMJ's Mining Journal ...

Sep 04, 2015 · As I mentioned previously, acidic leaches pull heavy metals out of your sulfides like lead, arsenic, antimony, etc. You end up with a hazardous waste mess that you cant get rid of cheaply, and depending on your sulfide mix, you may have difficulty recovering the precious metal values from the solution. ... Roasting or smelting might be done on ...


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Improved Smelting and Refining Processes for Production of ...

The long-established Herrenschmidt shaft furnace has been enlarged and modified into a Chinese-style antimony oxide furnace for volatilization roasting with use of high-temperature volatilization. Lower fuel consumption, reduced smelting costs and a higher-grade product have resulted.


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Antimony and Antimony Compounds - Grund - - Major ...

The full text of this article hosted at iucr is unavailable due to technical difficulties.


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Full text of "Roasting of gold and silver ores : and the ...

Full text of "Roasting of gold and silver ores : and the extraction of their respective metals without quicksilver" See other formats


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antimony roasting

Antimony is not an abundant element but is found in small quantities in over 100 mineral species. It is most often found as antimony(III) sulfide. It is extracted by roasting the antimony(III) sulfide to the oxide, and then reducing with carbon. Antimony can also be found as the native metal.

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volatilization roasting techniques for antimony

Gold Ore Roasting Techniqu, pyrargyrite (the antimony sulphide), and, has been described for the extraction of gold from a concentrate by volatilization in a . Get More; USAC Metallurgy - us antimony. USAC produces Antimony Oxide VF, MP, HT,, METALLURGY LIQUATION: Liquation, VOLATILIZATION ROASTING: Volatilization Roasting is the process of ...


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Roasting: Read Books Online for Free

The purpose and effect of roasting ore for lixi-viation is, as to gold, to burn all base metals, sulphur, and other substances, such as arsenic, antimony, and tellurium, and either expel them by volatilization, or leave them in such condition as to be harmless in the chlorination of the gold, and, as to silver, to change its condition in the ...


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List of alchemical substances - Wikipedia

Flowers of antimony – antimony trioxide, formed by roasting stibnite at high temperature and condensing the white fumes that form. SbO 3; Fool's gold – a mineral, iron disulfide or pyrite; can form oil of vitriol on contact with water and air.


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Recovery of Gold in Pyritic Sulfide Ores

Recovery of gold in sulfide ores has fallen into several categories. First is froth flotation, and second is cyanidation of the ores. Using cyanide to recover gold from sulfide ores generally results in 30 to 35% recovery, and the best I have heard of is around 50% recovery.


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Oxidizing Roast; Stibnite the Antimony Mineral

The leading antimony mineral is stibnite. In smelting stibnite ore two processes are available, precipitation and roasting-reduction. The former is suited, only for high-grade ores. As low-grade ores are more common than high-grade, roasting-reduction is of greater importance than precipitation. In the roasting process the aim may be to leave the oxidized antimony in the ore, or it may be to ...


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What is roasting of a sulfide ore? - Quora

Jun 20, 2018 · In roasting, the ore or ore concentrate is treated with very hot air. This process is generally applied to sulfide minerals. During roasting, the sulfideis converted to an oxide, and sulfur is released as sulfur dioxide, a gas.


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List of alchemical substances - Wikipedia

Flowers of antimony – antimony trioxide, formed by roasting stibnite at high temperature and condensing the white fumes that form. SbO 3; Fool's gold – a mineral, iron disulfide or pyrite; can form oil of vitriol on contact with water and air.

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Roasting Arsenic & Antimony Ores

The difficulty of roasting arsenical and antimonial ores may be avoided by taking ore, 1 A.T. ; red lead, 1,000 grains; sodium carbonate, 500 grains; potassium ferrocyanide, 550 grains, with a cover of salt or borax. The button is scorified, together with the matte formed, before cupellation. E. A. Smith found this method unsatisfactory and recommends the oxidation of sulphide of antimony by ...


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roasting iron from antimony ore

roasting antimony sulfides - sagarhotelin. Jun 3, 2014 Antimony can be extracted by reacting scrap iron with lowgrade ores that contain antimony sulfide (Sb2S3) Write an equation for the reaction of iron with antimony sulfide to form antimony and [1 mark] [1 mark] In the first stage of the extraction of antimony from a highgrade ore, antimony,


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RECOVERING MERCURY FROM CINNABAR-STIBNITE ORE BY .

of the antimony in a concentrate that assayed 20.4 percent Hg and 34.6 percent Sb. ... ess included bulk flotation of the sulfides, followed by oxidation roasting with close control of temperature and atmosphere. A similar process was employed by Menardi6/ on livingstonite concentrate.


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What is roasting of a sulfide ore? - Quora

Jun 20, 2018 · In roasting, the ore or ore concentrate is treated with very hot air. This process is generally applied to sulfide minerals. During roasting, the sulfideis converted to an oxide, and sulfur is released as sulfur dioxide, a gas.


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ANTIMONY TRISULFIDE

Antimony (III) Sulfide; ... The chief ore of antimony is stibnite (Sb 2 S 3, antimony trisulfide) which is produced in China and covers three-fourths of the world's mined antimony. It is also found in isomorphous mixture with arsenic, as allemonite. ... The pure antimony is produced from the ore by roasting it to form the oxide, then reducing ...


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roasting stibnite

roasting antimony sulfides . problem when roasting iron from antimony ore, Extraction of copper from copper sulfide minerals by roasting and smelting. roasting antimony sulfides Traduire cette page. Stibnite is a toxic antimony sulfide mineral with an orthorhombic crystal lattice and a source . problem when roasting iron from antimony ore .

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KINETICS OF STIBNITE (S b S ) OXIDATION AT ROASTING ...

Roasting has been an effective method for preferential removal of the minor components from the concentrates, particularly arsenic and antimony, in the form of volatile compounds at high temperatures [3]. Besides temperature, another parameter that has an important effect on the removal of impurities in roasting is the type of atmosphere, which ...


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SELECTIVE EXTRACTION OF MERCURY AND ANTIMONY .

the sulfides of both mercury and antimony to develop a method or methods for the ... roasting only a portion of the ore. For this reason, aside from a few small operations, concentration of mercury ores never has been accepted for plant practice.


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USAC Metallurgy - us antimony

SULFIDE ORES: The mineral dressing of sulfide ores is primarily accomplished by flotation although it can be accomplished by gravity and hand -sort methods. Recoveries of un-oxidized sulfides can be in the mid 90% range with concentrate grades of 60 to 68% for stibnite ores.

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