USAC Antimony Terminology - United States Antimony Corporation

“Crude” means crude antimony trioxide, typically 82-82.5% antimony metal contained. The desirable mineral is senarmontite. This can be refumed directly to “finished” or converted to metal, or sold directly as a feed for other plants. It is typically an off-white color (gray or light brown). · “Finished” means finished antimony...

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

The concentrate of sulfur antimony ore, leached with a solution of caustic alkali according to the known techniques dissolves, as sulfur salts as much Sb as possible, whilst the other heavy and precious metals which accompany the antimony bearing ore remain unchanged in the residue. From the solution of antimony sulfur...

US3944653A - Process for preparing high purity antimony trichloride ...

3,432,255 to Long et al., there is provided a process for converting ores containing a variety of metals including antimony to chloride compounds by reaction with hydrogen chloride and an oxidizing gas, i.e., air or oxygen, at temperatures sufficiently high such that the desired metal values are converted to volatile chloride...

Antimony Compounds - EPA

factories that convert antimony ores into metal, or make antimony oxide, concentrations may be greater than 1,000 ng/m. 3. (0.01 mg/m. 3. ). (1). Soil usually contains very low concentrations of antimony (less than 1 part per million [ppm]). However, higher concentrations have been detected at hazardous waste sites and at...

Antimony - Wikipedia

Antimony is a chemical element with symbol Sb (from Latin: stibium) and atomic number 51. A lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite (Sb2S3). Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the...

Metal Extraction Process for High Grade Stibnite of Kharan ...

Jan 12, 2017 ... is employed directly for extraction of antimony metal as its recovery is better by 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...

The metallurgy of antimony

Antimony is a chalcophile, occurring with sulfur and the heavy metals copper, lead and silver. More than 100 minerals of antimony are found in nature. Some of the more common ones, as summarized by the author, are listed in Table 1. Industrially, stibnite (Sb2S3) is the predominant ore of interest and importance. Stibnite...

Antimony | chemical element | Britannica.com

Jan 23, 2018 ... The metal can also be obtained by conversion of stibnite to the oxide, followed by reduction with carbon. Sodium sulfide solutions are effective leaching agents for the concentration of stibnite from ores. Electrolysis of these solutions produces antimony. After further purification of the crude antimony, the...

Mineral Commodity Profiles: Antimony - Pharos Project

Mineral Commodity Profiles. Antimony. By W.C. Butterman and J.F. Carlin, Jr. 2004. This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards (or with the Northern American Stratigraphic Code). Any use of trade, product, or firm names is for descriptive purposes only...

Mineral Concentrate Marketing - Treatment Charges & Penalties

Mar 17, 2017 ... Flotation, though primarily used in the recovery of copper, lead, zinc, gold, and silver minerals, is also being applied to many non-metallics such as coal, sand, potash salts, talc, etc., as well as to ores of the less common metals such as molybdenum, nickel, antimony and mercury. The products of such...

Antimony in Drinking-water - World Health Organization

Elemental antimony is an inflexible metal and therefore has few technical uses. However, it forms very ... in the form of ATO, which is released as a result of coal burning or with fly ash when antimony-containing ores are ..... Frezard F et al. (2001) Glutathione-induced conversion of pentavalent antimony to trivalent antimony.

Antimony, Chemical Element - reaction, water, uses, elements, metal ...

Not recognized as a chemical element until the Middle Ages, antimony became a common material used by alchemists. Alchemy was a kind ... A metalloid is an element that has characteristics of both metals and non-metals. The metalloids ... They thought that antimony could be used to convert lead into gold. It was during...

First rare earths, now antimony ― it's all about China - InvestorIntel

Dec 2, 2013 ... One interesting presentation by that company shows how antimony can be potentially profitable at what would be low grades for other metals. At $10,500/tonne, in order to achieve $105 value for every tonne of ore that is mined, antimony grades need to be just 1%. Lead, though, at $2,100/tonne would...

Description - NAICS Code 212299 - All Other Metal Ore Mining

What is NAICS code 212299 - All Other Metal Ore Mining - This U.S. industry comprises establishments primarily engaged in developing the mine site, mining, ... Molybdenum ores mining and/or beneficiating; Antimony ores mining and/or beneficiating; Rare-earth metal ores mining and/or beneficiating; Tantalum ores...

Bioleaching of Antimony from Indigenous Stibnite of ... - ASRJETS

oxidation of ferrous iron or reduction of inorganic sulfur compounds present in medium and sulphide ores [4,5]. These microorganisms have ability to convert insoluble sulfides of metals in to their soluble metal sulfates in presence of moisture, air and nutrients such as copper, lead, zinc, antimony and nickel. It is previously...

Electrolytic recovery of antimony from natural stibnite ore (PDF ...

Oct 11, 2017 ... Hydrometallurgical treatment based on leaching with acids, precipitation and electro-deposition of metal values from the ore have been developed. Studies to investigate suitable electrolytic baths for the cathodic deposition of metallic antimony either directly from the leach liquor or in the presence of...

Lead - How The Metal Is Obtained - Copper, Ores, Ore, and Material ...

The raw material from which lead metal is produced is either a naturally occurring ore or, more commonly today, lead products returned for recycling. In the United States, ... The lead produced by either of these methods is still impure, containing small amounts of copper, tin, arsenic, antimony, and other metals. Each metallic...

Glossary of Metals - CDC

Because antimony is found naturally in the environment, people are exposed to low levels of it every day, primarily in food, drinking water, and air. Workers in industries that process or use antimony ore can be exposed to higher levels. Health effects. Breathing high levels of antimony for a long time can irritate a person's...

Antimony | Minerals Education Coalition

A native element, antimony metal is extracted primarily from stibnite, which contains 72 percent antimony and 28 percent sulfur. ... Antimony is found in trace amounts in silver, copper and lead ores, and it is usually economically possible, as well as environmentally desirable, to extract the antimony from these ores when...

Chapter 82 - Metal Processing and Metal Working Industry

In smelting, the worthless material, usually iron, forms a slag with fluxing material and is converted into the oxide. ..... The major hazards are exposure to ore dusts during ore processing and smelting, metal fumes (including lead, arsenic and antimony) during smelting, sulphur dioxide and carbon monoxide during most...

Lead and Zinc - Department of Energy

Black sphalerite may contain as much as 18 percent iron. Lead Ore. The lead produced from lead ore is a soft, flexible and ductile metal. It is bluish-white, very ... Complex ores are also the source of byproduct metals such as bismuth, antimony, silver, copper, .... in air causes the sulfur to be converted to sulfur dioxide gas.

Glossary - Nyrstar

Antimony. A metallic element, often a pathfinder element for gold. Au. Chemical symbol for gold. Base metal. Non precious metal, usually refers to copper, lead, ... of a specific mineral is higher than in the ore. Continuous galvanising. A system for providing a continuous supply of material to be galvanised. Conversion Price.

Production - Element Bismuth, Bi, Poor Metal

(2) In the case of sulphide ores, particularly if associated with sulphides of arsenic and antimony, the ore is first roasted; arsenic and antimony are thus converted into oxides, partly volatilised and partly removed as scum, while bismuth is converted into a mixture of oxide and sulphate. Reduction to metal is carried out as for...

Strategic Materials - Commodity One-Pagers Document.pdf

Domestically, antimony ore and concentrate can be processed into pure metal, oxide, and other compounds required for military applications. The military's consumption of antimony is primarily in small ammunition, lead-acid batteries, flame retardant textiles, and semiconductors. Are there any substitutes for antimony?

Antimony - The Risk Assessment Information System

Aug 29, 1997 ... Antimony (Sb) is a naturally occurring metal that is used in various manufacturing processes. It exists in valence states of 3 and 5 (Budavari, 1989; ..... Study of carcinogenicity and toxicity of inhaled antimony trioxide, antimony ore concentrate and thallic oxide in rats. NIOSH/U.S. Dept. Health. OTS0511065.

Schedule 6. Metals and Metal Products - USITC

_ Part 1 - Metal-Bearing Ores and Other Metal-Bearing. Materials. Part 2 - Metals , Their Alloys, and Their Basic Shapes and. Forms. A. Precious Metals. B. Iron or Steel. C. Copper. D. Aluminum ..... or residuum from burnt pyrites : 601.03 00 Antimony ore. ..... nae aa a flux or aulphur reagent in copper amelting or converting.

CHART of HEAVY METALS, THEIR SALTS AND OTHER - American ...

ANTIMONY (Sb). 7440-36-0. Silver-white, lustrous, hard, brittle solid; scale-like crystals; or a dark-gray, lustrous powder. *Metalloid; semi-metal. On contact with acids may emit toxic gas, Stibine. Antimony metal; Antimony powder; Antimony black;. Antimony regulus; Stibium; C.I. 77050. Mineral: Boulangerite; Bournite...

Electrolysis of a molten semiconductor - Nature

Aug 24, 2016 ... Direct electrochemical reduction of ores can improve metal recovery by simplifying the process, ... high-purity liquid antimony via direct electrolysis of the molten semiconductor, antimony sulfide ... electrolytic conversion of molten semiconducting Sb2S3 into liquid Sb and sulfur vapour. ARTICLE. NATURE...

Antimony trioxide - an overview | ScienceDirect Topics

Antimony (Sb, stibium) is a semimetallic element that belongs to the vanadium family (Group VA) of the periodic table and shares certain chemical and physical properties with lead, arsenic, and bismuth [1]. In nature, antimony is associated with sulfur as stibnite and occurs in ores with arsenic. A silvery white metal, antimony...

Metal Bulletin

Unwanted elements in the ore, such as sulphur, are removed by combining with other additions in the charge. Iron from the blast furnace may be refined for direct use in foundries or (casthouses) but most is usually converted to steel in a basic oxygen furnace (converter). Blast furnaces can operate for several years without...

Simportex : Antimony

Antimony. Name. Antimony. Symbol. Sb. Atomic Number. 51. Atomic Weight. 121.760 (1) g. Metallic antimony is a brittle metal with a crystalline texture. It is not acted on by air at room temperature, but burns brilliantly when heated with the formation of white fumes. It is a poor conductor of heat and electricity.

The Elements of Group 15 (The Pnicogens)

Hence a major source of antimony and bismuth is flue dust obtained by smelting the sulfide ores of the more abundant metals. In group 15, as elsewhere in the p ..... It is highly strained, with bond angles of only 60°, which partially explains why it is so reactive and so easily converted to more stable allotropes. Heating white...

Bismuth: extraction-Metalpedia

Bismuth is extracted from its ores by dry, wet, or electro-metallurgical methods, the choice depending upon the composition of the ore and economic conditions. ... Another process consists in adding water to the solution and so precipitating the bismuth as oxychloride, which is then converted into the metal. The crude metal...

ANTIMONY HAS BILLION-DOLLAR POTENTIAL IN TAJIKISTAN ...

Antimony is one of the rare metals for whom new applications are being devised in electronics, battery manufacture, and flame retardants, but whose worldwide .... The government press reports indicated that the single operational production line at Anzob was converting 350,000 tonnes of ore into 12,000-14,000 tonnes of...

alumina (Al2O3) acid leaching, 7 alumina ore ... - Wiley Online Library

alumina ore carbochlorination, 131 aluminum pig iron desulfurization, 301 steel deoxidation, 299 aluminum carbide (Al4C3), 210 aluminum chloride (AlCl3) ... antimony (Sb) removal from lead, 317. AOD converter, 245, 248. Armstrong process metallothermic reduction, 136 arsenic lead refining, 317 removal from tin, 318.

Metals - Platts

Jun 2, 2014 ... 2. ANTIMONY. 5. ARSENIC. 5. BISMUTH. 5. CADMIUM. 5. COBALT. 5. COPPER. 6. FERROCHROME. 6. FERROMANGANESE. 7. FERROMOLYBDENUM. 8. FERROSILICON. 8. FERROVANADIUM. 9. GOLD. 9. INDIUM. 9. IRIDIUM. 9. LEAD. 9. MAGNESIUM. 10. MANGANESE. 10. MANGANESE ORE. 10.

Untitled

magnesium, sodium, antimony etc. ... 15 metal is obtained in liquid or gaseous state first. 2.2 SOME UNIT PROCESSES FOR PRELIMINARY TREATMENT OF. ORES. A very large number of unit processes are used in pyrometallurgy. ... It brings about chemical conversion and renders the raw materials more suitable.

Critical Metals: Antimony - - ICMJ's Prospecting and Mining Journal

Unfortunately, it was just too difficult to try to recover the lead and antimony, because these metals needed to be smelted out. There were very few smelters in the US, and unlike years past, the ones in existence didn't accept custom ores. Erecting our own smelter for such a small project would have been too expensive and...

Magnesium–Antimony Liquid Metal Battery for Stationary Energy ...

Jan 6, 2012 ... A high-temperature (700 °C) magnesium–antimony (Mg||Sb) liquid metal battery comprising a negative electrode of Mg, a molten salt electrolyte (MgCl2–KCl–NaCl), and a positive electrode of ..... The prospect of high temperature solid state energy conversion to reduce the cost of concentrated solar power.

doctoral thesis - DiVA portal

uel A yow ole A w e Antimony Recovery from Complex Copper Concentrates through Hydro- and Electrometallurgical Processes ... the leaching yield decreased by about 37% when the mineral particle size of the concentrate ... Minerals and Metals Research Laboratory (MiMeR) group for their treasured supports and helps.

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