Roasting in Metallurgy - Mineral Processing & Metallurgy
In metallurgy, the operation of roasting, as a preliminary to chlorination, has for its object the expulsion of the sulphur, arsenic, antimony and other volatile substances existing in the ore, and the oxidation of the metals left behind, so as to leave nothing (except metallic gold) which can combine with chlorine when the ore is subsequently treated with it in aqueous solution.
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Antimony - Minerals Education Coalition
Description. Named from the Greek words meaning "not alone," antimony is a metalloid element that is primarily found as a very brittle, bluish-white metallic substance. It is unreactive to air, acids or bases. The most important use for antimony in fire-retardant chemicals that are added to plastics and textiles, especially for children's ...
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antimony | Infoplease
Antimony is often found in other ores as well, e.g., silver, copper, and lead. The pure element antimony is produced from the ore by roasting it to form the oxide, then reducing the oxide with carbon or iron; often a flux of sodium sulfate or sodium carbonate is used to …
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Stibnite - an overview | ScienceDirect Topics
6.1 Antimony (Stibnite Ore) Antimony deposits and prospects in the form of quartz- stibnite veins and replacement bodies are scattered in the Slate belt between Papun and 15°N. Clegg gives a summary description, based on Heron in Clegg (1944a), of the deposit at Thabyu village (15°35′N, 98°07′E), 70 km southwest of Thanbyuzayat.
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SELECTIVE EXTRACTION OF MERCURY AND ANTIMONY …
of air, would yield an overall recovery of more than 95 percent of the mercury in the ore and would permit possible recovery of antimony from the furnace calcine. Similar treatment is reported tp have been employed successfully on livingstonite ore from Guerrero, Mexico (j5) ./ Results of preliminary hydrometallurgical tests indicated that ...
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Selective froth flotation concentration of antimonite ore ...
to air bubbles [2]. The mineral composition of the ore sample from Gothic mine Zimbabwe is an antimonite (Sb 2 S 3). The antimony is found in many forms, mainly antimonite, much subordinated in lead-antimony sulphosalts, in compounds with gold (auroantimonite) and in oxides (kermesite, valentinite). The lead is concentrated as monosulphide
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Research on the Characteristics and Mechanism of the ...
The addition of soda ash (Na 2 CO 3) and introducing air during crude antimony smelting allow arsenic to oxidize, which is separated from antimony to produce sodium arsenate. Thus the composition of antimony smelting slag is chemically complex and may contain the antimony oxide losses and antimony compounds produced by redox reactions in the ...
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Lead Ore - an overview | ScienceDirect Topics
It is known that antimony and its oxides are easy to volatilize (Cui et al., 2008a,b), and both exhibit significant vapor pressure above 1073 K. Arsenic is often associated with antimony ore due to their similar chemical properties; in addition to being toxic, arsenic is also volatile (Chen et al., 2012; Awe and Sandstrom, 2010). Thus, smelting ...
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Geology of the Tungsten, Antimony and Gold Deposits Near ...
tungsten and antimony ore. Ore mined at the Meadow Creek mine contained 0.23 ounce of gold per ton and 1.6 percent of antimony. That mined at the Yellow Pine mine contained less gold but about 4 percent of antimony and 2 percent of WO8. The tungsten ore body at the Yellow Pine mine was exhausted in 1945. A total
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Antimony Ore - Cargo Handbook - the world's largest cargo ...
Antimony Element Facts - chemicool.com
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Antimony - Flame Retardants - Polymerinsights
Approximately 20,000 metric tons of antimony trioxide [] (commonly referred to as antimony oxide), Sb 2 O 3, was used in the United States in 1990 to impart flame retardancy to plastics .Although antimony trioxide is found in nature, it is too impure to be used. Flame-retardant grades of antimony oxides are manufactured from either antimony metal or the sulfide ore by oxidation in air ...
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12.3 Primary Copper Smelting
Ore concentration is roasted to reduce impurities, including sulfur, antimony, arsenic, and lead. The roasted product, calcine, serves as a dried and heated charge for the smelting furnace. Smelting of roasted (calcine feed) or unroasted (green feed) ore concentrate produces matte, a molten mixture of copper sulfide (Cu2S), iron sulfide
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Sb, Antimony Ore Mineral Analysis
Sb, Antimony Ore Mineral Analysis. The origin of the word antimony is based on words that mean a metal not found alone in Greek. Antimony is a metal known and used in the seventeenth century. So antimony has been known since ancient times. Its metallic form is bright and silvery, hard and fragile. Its nonmetallic form is a gray powder.
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Tin Ore - an overview | ScienceDirect Topics
It is known that antimony and its oxides are easy to volatilize (Cui et al., 2008a,b), and both exhibit significant vapor pressure above 1073 K. Arsenic is often associated with antimony ore due to their similar chemical properties; in addition to being toxic, arsenic is also volatile (Chen et al., 2012; Awe and Sandstrom, 2010). Thus, smelting ...
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Medical Definition of Antimony - RxList
It may be found in air near industries that process or release it, such as smelters, coal-fired plants, and refuse incinerators. Workers in industries that process it or use antimony ore may be exposed to higher levels. Exposure to antimony at high levels can …
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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 includes ...
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Asian Metal - Antimony prices, news and research
Brazil. South Korea. Austradiva. Russia. Switzerland's antimony oxide import volume rose 818.64% MoM in Jun 2021 [10-28] South Korea's unwrought antimony export volume rose 18.22% YoY in Jun 2021 [10-28] China's antimony ingot export volume rose 148.72% MoM in Sep 2021 [10-28] China's lead antimony alloy import volume declined 60.40% MoM in Sep ...
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Metallurgy - US Antimony
The ore is placed on a grate, and the stibnite melts out of the ore and through the grate to collect in pans. Sb 2 S 3 melts at 550° C. (Pelabon); at 540° (Wagemann); at 546° (Borgstrom). Sb 2 S 3 volatilizes, in the absence of air, between 650° and 917° (S.A. Chakhov and I.I. Slobodskai).
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Antimony Trioxide - CAREX Canada
General Information. Antimony trioxide (Sb 2 O 3) is a slightly soluble, white crystalline powder. [] It is produced by smelting antimony-containing ores [] or reacting antimony trichloride with water. [] Antimony is not abundant in the earth's crust. [] Antimony trioxide may also be referred to as diantimony trioxide (DAT), antimony oxide, or in manufacturing as antimony white. []
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(PDF) Antimony Production and Commodites
Since antimony is commonly found in precious metal refractory ore bodies, extraction is essential. The Sunshine Mine in KeIlogg, Idaho has recovered antimony from its precious metal tetrahedrite ...
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How to Remove Arsenic, Antimony & Bismuth from Copper
Antimony is, to a great extent, similar to arsenic in its occurrence in copper-ores, and also in its deportment when subjected to the action of heat and air. It volatilizes as a sulphide and as metallic antimony, but to a less extent than the corresponding compounds of arsenic.
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Antimony Element Facts - chemicool.com
Exposure to 9 milligrams per cubic meter of air (mg/m 3) of antimony as stibnite for a long time can irritate your eyes, skin, and lungs. Breathing 2 mg/m 3 of antimony for a long time can cause problems with the lungs (pneumoconiosis) heart problems (altered electrocardiograms), stomach pain, diarrhea, vomiting and stomach ulcers.
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ANTIMONY & COMPOUNDS (as Sb) | Occupational Safety and ...
A health hazard evaluation of antimony exposure in fire fighters. J Occup Environ Med. 52(1): 81-84, 2010. EPA Air Toxics Website: Antimony Compounds. U.S. Environmental Protection Agency Technology Transfer Network, 2000. EPA: Integrated Risk Information System - Antimony trioxide (CASRN ), 1995.
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Toxicological Profile for Antimony
Antimony (Sb) is naturally present in the earth's crust at levels of about 0.2–0.3 mg/kg (ppm), but these levels vary by location (Telford et al. 2008). It can be transported into streams and waterways from
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Antimony Recovery from End-of-Life Products and Industrial ...
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 its use as flame retardant in plastics, coatings, and …
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: antimony
Antimony (Sb) 24.26mm Metal Disc 99.9% Pure for Collection or Experiments. $39.99. $39. . 99. Get it as soon as Mon, Oct 11. FREE Shipping by Amazon. Only 4 left in stock - order soon.
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Antimony - Simple English Wikipedia, the free encyclopedia
Antimony is made from stibnite by heating it with air. This makes antimony trioxide. Since it gets so hot, the antimony trioxide is evaporated. Other metal oxides in the stibnite ore do not evaporate. The antimony trioxide gas is condensed in a container. The antimony trioxide is then heated with carbon to make carbon dioxide and antimony.
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Antimony - USGS
Antimony Chapter C of. ... C3. Potential additional sources of antimony ore and concentrate, by country ..... C10. iv Conversion Factors ... Concentrations of chemicals in air are given in units of the mass of the chemical (milligrams, micrograms, nanograms, or picograms) per volume of air (cubic meter). ...
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Screening assessment antimony-containing substances ...
Abbreviations: NA, Not Available. a This CAS RN is a UVCB (unknown or variable composition, complex reaction products, or biological materials).. Antimony (Sb) is a naturally occurring semi-metal. Results from surveys under section 71 of CEPA indicate that the 11 antimony-containing substances in this group were manufactured or imported above reporting thresholds in either 2008 or 2011.
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Antimony - Wikipedia
Antimony is a member of group 15 of the periodic table, one of the elements called pnictogens, and has an electronegativity of 2.05. In accordance with periodic trends, it is more electronegative than tin or bismuth, and less electronegative than tellurium or arsenic.Antimony is stable in air at room temperature, but reacts with oxygen if heated to produce antimony trioxide, Sb 2 O 3.
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Antimony | Sb - PubChem
Antimony is a silvery-white metal that is found in the earth's crust. Antimony ores are mined and then mixed with other metals to form antimony alloys or combined with oxygen to form antimony oxide. Little antimony is currently mined in the United States. It is brought into this country from other countries for processing. However, there are companies in the United States that produce antimony ...
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Tungsten / Cobalt / Antimony prices | Minor Metals | SMM ...
171,000-173,000. 172,000. 0. Oct 21, 2021. Change orientation to land scape to view the price table. Tungsten Ore. Chinese Yuan. Download Data. The data you see below is for one week ago, to see the latest spot price, please sign in or sign up for free.
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Antimony: ATSDR Fact Sheet
It may be found in air near industries that process or release it, such as smelters, coal-fired plants, and refuse incinerators. In polluted areas containing high levels of antimony, it may be found in the air, water, and soil. Workers in industries that process it or …
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