Antimony has become an increasingly critical element in recent years, due to a surge in industrial demand and the Chinese domination of primary production. Antimony is produced from stibnite ore (Sb2O3) which is processed into antimony metal and antimony oxide (Sb2O3). The industrial importance of antimony is mainly derived from …Web
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The utility model discloses a comprehensive smelting furnace for performing bottom blowing and flash oxidation on antimony ores. The furnace comprises a furnace body. A lump coal or coking coal or lump ore charging port is arranged at the top of the furnace body. The comprehensive smelting furnace is characterized in that a spray …Web
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The reverberatory furnace for reduction of antimony oxide was also enlarged: refining at lower temperatures and continuous mechanical casting into ingots gave a high-grade regulus. To enlarge the range of antimony products successful testwork was carried out on a technique characterized by fuel-free, self-oxidation volatilization capable of ...Web
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Determination of total antimony and inorganic antimony species by hydride generation in situ trapping flame atomic absorption spectrometry: a new way to (ultra)trace speciation analysis. ... the Determination of Gold in Geological Samples Using the Vapor Generation Technique and Preconcentration in a Graphite Furnace. Applied Spectroscopy 2006 ...Web
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The fuming furnace process can help the plant to treat with such stored antimony smelting slag and can further collect and recover some zinc, lead, and antimony as well. When cold slag is directly fed into fuming furnace, some cold slag goes to following dust collection system rather than falls into bath for reaction due to small particles.Web
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First, the reduction smelting of antimonial dust is carried out in an oxygen-rich bottom blow furnace to enrich antimony and lead in the crude alloy. The antimony and lead contents in the slag can thus be …Web
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Antimony is considered an important metal, and various antimony compounds are widely used in electronics, flame retardants, chemicals, alloys, and semiconductor materials.1 Antimony exists mainly in the form of antimony sulfide, which is usually smelted by volatilization in the blast furnace. However, the process has some problems, such asWeb
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Major Chinese antimony producer Hsikwangshan Twinkling Star restarted its blast furnace this week, after suspending it for more than a month because of a shortage of concentrate feedstock ...Web
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In general, antimony trioxide (Sb 2 O 3), which is considered to be the most important antimony compound, is produced by volatilizing antimony metal in an oxidizing furnace (Anderson, Citation 2012). Antimony enters the environment during the mining and processing of its ores and in the production of antimony metal, alloys, antimony oxide, …Web
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This paper discusses the development of Roman antimony decolourised natron glass, its dominance, and subsequent decline, using new trace element data for colourless glass found in Britain. Experimental glasses are used to investigate the influence of different proportions of raw materials (particularly the ratio of natron to calcium …Web
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antimony. Table of Contents. Antimony - Properties, Reactions, Uses: The most stable form of elemental antimony is a brittle silvery solid of high metallic lustre. Electrolytic …Web
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In a cyclone furnace, antimony is mainly volatilized as antimony sulfide (~75% of the total antimony in the concentrate), the remainder may get oxidized and …Web
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The elimination of arsenic and antimony in this operation is considerably greater than that of bismuth. In the case of slags produced from blast-furnace practice, smelting similar materials, I have never found more than 0.015 per cent, of arsenic, and only traces of antimony.Web
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Smelting in a blast furnace is applied for intermediate grade ores and all other materials containing antimony (25–40% antimony). Rich ores (with 45–60% antimony) …Web
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The invention discloses an oxygen-enriched molten pool antimony refining production process, and belongs to the field of smelting of nonferrous metal. The process comprises the following steps: 1) batching: raw materials are uniformly mixed according to a mass ratio to obtain a mixture; 2) granulation: the uniformly mixed mixture is prepared as spherulites; …Web
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Straight well stove volatilization roasting method is to be fuel with the coke, is raw material with the antimony sulfide, utilizes the easy volatile of antimony, and volatile substances such as antimony, arsenic, lead are become gaseous state, enters cooling, dust collecting system with furnace gas, thereby realizes separating the stibium trioxide …Web
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The gaseous hydrides are stripped from the analytical stream and transported with inert gas to the atomizer (a heated quartz furnace) of the atomic absorption spectrophotometer. For selenium, the quartz furnace is heated by an air acetylene flame to 2000°C; the arsenic and antimony furnace is electrically heated to 900 and 1,000° C respectively.Web
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a conventional furnace for longer periods of time ranging from several minutes to hours. Differential Hall measurements were carried out to obtain carrier concentration profiles, while sheet ... antimony and arsenic implants are shown in Fig. 2. For the high-energy (40-keV) antimony implants, the highest electrical activation (90%) and lowestWeb
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Metallic antimony with a purity of 99.4% is obtained when the antimony oxide is reduced in a reverberatory furnace at 1200°C by reducing coal. During the refining process in a reverberatory furnace, any As accompanying the antimony oxide is removed by the addition of sodium hydroxide. AAR is generated during the As removal process.Web
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Antimony is a regulated contaminant that poses both acute and chronic health effects in drinking water.Previous reports suggest that polyethylene terephthalate (PET) plastics used for water bottles in Europe and Canada leach antimony, but no studies on bottled water in the United States have previously been conducted. Nine …Web
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Industrially, reduction of antimony oxide to metallic antimony is achieved by heating and the addition of carbon in a reverberatory furnace. Volatilization of antimony can be reduced by the addition of an alkaline flux but it cannot be eliminated and volatilized antimony oxide is recovered in flues, condensing pipes, bag houses, precipitators ...Web
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Antimony hydride was then detected in an electrically heated (900 °C) quartz cell mounted in the place of the graphite furnace. 2.6. UV irradiation treatment. A PTFE tube (3 m length; 0.6 mm inner diameter) was wrapped around the mercury lamp of the FIMS system. 2.7. Determination of antimony and antimony species in seawaterWeb
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The current paper reviews the conventional pyrometallurgical processes and technologies that have been practiced for the treatment of antimony concentrates. The blast furnace is the most commonly ...Web
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Antimony (Sb; CASRN ) is a silvery semimetal element with chemical properties similar to lead, arsenic, and bismuth. In nature, it is found associated with sulfur as …Web
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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 …Web
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The phase transformation mechanism of antimony sulfide in the oxygen-enriched smelting system was investigated. The standard Gibbs free energy change (ΔG^θ) of reactions in the smelting system at 100 ~ 1400°C were calculated, indicating that the reaction between Sb_2S_3 and oxygen was liable to occur first, and that the high-valent …Web
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320 to 700°C (600 to 1300°F). Alloying furnaces simply melt and mix ingots of lead and alloy materials. Antimony, tin, arsenic, copper, and nickel are the most common alloying materials. Refining furnaces are used to either remove copper and antimony for soft lead production, or to remove arsenic, copper, and nickel for hard lead production.Web
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provide some indication of the detection limits obtainable by the furnace technique. The detection limits given in Table 1 are somewhat dependent on equipment (such as the type of spectrophotometer and furnace accessory, the energy source, the degree of electrical expansion of the output signal), and are greatly dependent on sample matrix.Web
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Scope and Application. This method determines antimony by graphite furnace atomic absorption spectrometry. Sample pretreatment according to EPA Method 200.0 determines the applicability. Applicable Concentration Range. 20-300 ug/L (optimal range). Interferences. Chloride: Interferences from chloride are prevented by adding an excess …Web
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