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  • Determination of the selenium contents of waste rocks of iron ore

    Western Australian School of Mines. Department of Applied Geology. Determination of the selenium contents of waste rocks of iron ore mining in the. Pilbara, Western Australia using ICPMS. Donya Rajabian Tabesh. This thesis is presented for the Degree of. Master of Philosophy (Geology) of. Curtin University. September 

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  • selenium facts, information, pictures Encyclopedia articles

    In 1989, selenium was reclassified as an essential micronutrient in a balanced human diet when the National Research Council established the first recommended daily allowance (RDA) for it. It is considered a minor mineral, or a trace element, as distinct from a major mineral such as calcium or phosphorus, or an 

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  • Selenium in Some Canadian Sulfides CiteSeerX

    trographic means on pyrite, pyrrhotite, pentlanditc and chalcopyrite from a variety of Canadian ores including a highintensity magnetite replace ment body, several nickeliferous copper sulfide (magmatic) ores of Sud bury, nine massive, nonnickeliferous, copper, iron (zinc) hydrothermal replacement ores chiefly from 

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  • Up Close: Iron Mining in the Upper Peninsula WXPR

    Nov 26, 2013 Controversy continues over a proposed iron mine in Iron and Ashland counties. While Wisconsin hasn't seen an open pit mine in a while, some neighboring.

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  • Evaluation of Treatment Options to Reduce WaterBorne Selenium

    the necessity to manage residues from treatment, such as brines or wash solutions for membrane filtration and ion exchange, or sludges resulting from iron precipitation. These different technologies were evaluated using a scoring system based on nine separate factors relevant to coal mines in WestCentral Alberta.

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  • Mineral Resource of the Month: Selenium EARTH Magazine

    Selenium is recovered as a byproduct of nonferrous metal ore processing, principally from the anode slimes associated with electrolytic refining of copper. Slimes from Selenium is used in the production of container glass and other sodalime silica glass to decolorize the green tint caused by iron impurities. It is also used 

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  • Technical basis for the use of SulfurModified Iron (SMI) for removal

    1. Technical basis for the use of SulfurModified Iron (SMI) for removal of selenium from coal mine waste waters. William L. Bourcier, Ph.D. April 16, 2013. For SMI Inc. Executive Summary. Sulfur modified iron (SMI) is a reactive media for removal of contaminants from water that is very effective at removing selenium.

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  • Electron transfer at the mineral/water interface: Selenium Hal

    Mar 8, 2008 lished or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire transfer at the mineral/water interface: Selenium reduction by ferrous iron sorbed on clay. Geochimica et Cosmochimica Acta 

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  • Minerals Free FullText MiningRelated Selenium Contamination

    Mar 21, 2017 ZVI provides a source of ferrous and ferric iron that stays in the system as hydroxides of iron (ferrous and ferric hydroxides) and directly or indirectly reduces selenate and selenite oxyanions to elemental selenium. The iron dissolution and selenium reduction by ferrous ions are represented by the following 

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  • bhpbilliton iron ore EPA WA

    Nov 18, 2005 BHP Billiton Iron Ore. Orebody 25 Environmental Management Plan. BHP033.1EMP01J.DOC18/11/05. ES3. BHP Billiton Iron Ore Pty Ltd (BHPBIO) owns and operates the Orebody 25 Mine (OB25), which is situated in the Pilbara region of Western Australia (WA), and lies approximately 8 kilometres (km).

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  • Selenium and Tellurium USGS Mineral Resources Program

    The major use of tellurium is as an alloying additive in copper, iron, and steel to improve machining characteristics. of the selenium and tellurium mined in the United States was from Arizona, New Mexico, and Utah. .. Even with the lower selenium and tellurium content of ore and electrowinning causing decreases in the 

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  • Cobalt, nickel and selenium in sulphides as indiors of ore genesis

    A wide range of oretypes occurs in the Lower Palaeozoic rocks of West Tasmania (Australia) which lies in the southern part of the Tasman Geosyncline. The cobalt and nickel contents of pyrites from a number of these ores have been determined by atomic absorption spectrophotometry. Preliminary results show that the 

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  • Selenium, tellurium and precious metal mineralogy in IOPscience

    Selenium, tellurium and precious metal mineralogy in Uchalinsk copper zincpyritic district, the Urals. To cite this their presence in disperse mode in common ore minerals (pyrite, chalcopyrite, sphalerite) have been studied using SEM, EPMA, INAA, . component of tennattitetetrahedrite. Lowiron tennantite (0.10.5 wt.

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  • Iron Mines in Michigan : Image of the Day NASA Earth Observatory

    Aug 28, 2014 It did not take long to determine why: ancient Precambrian rock layers in the area were laced with bands of iron ore. released by Michigan's Department of Environmental Quality found that sediment in Goose Lake sediment and in some nearby streams have elevated levels of selenium due to mining.

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  • Cobalt, nickel and selenium in sulphides as indiors of ore genesis

    A wide range of oretypes occurs in the Lower Palaeozoic rocks of West Tasmania (Australia) which lies in the southern part of the Tasman Geosyncline. The cobalt and nickel contents of pyrites from a number of these ores have been determined by atomic absorption spectrophotometry. Preliminary results show that the 

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  • Mining's last stand? A UP way of life is threatened MLive

    Feb 18, 2016 After all, this is iron ore country and the two yawning openpit mines a few miles southeast might as well be on the endangered species list. Department of Community Health issued a fish advisory for lakes and waterways near the mines because of elevated levels of selenium tied to the mining operation.

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  • Minerals Free FullText MiningRelated Selenium Contamination

    Mar 21, 2017 ZVI provides a source of ferrous and ferric iron that stays in the system as hydroxides of iron (ferrous and ferric hydroxides) and directly or indirectly reduces selenate and selenite oxyanions to elemental selenium. The iron dissolution and selenium reduction by ferrous ions are represented by the following 

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  • Mineral Commodity Summaries 2017 USGS Mineral Resources

    Jan 19, 2017 Iron and Steel. Pumice. Titanium. Cesium. Iron Ore. Quartz Crystal. Tungsten. Chromium. Iron Oxide Pigments. Rare Earths. Vanadium. Clays. Kyanite Lime. Salt. Yttrium. Diamond. Lithium. Sand and Gravel. Zeolites. Diatomite. Magnesium. Scandium. Zinc. Feldspar. Manganese. Selenium. Zirconium 

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  • ClevelandCliffs, Inc. 10K Feb. 9, 2017 1:46 PM Seeking Alpha

    Feb 9, 2017 We are a major supplier of iron ore pellets to the North American steel industry from our mines and pellet plants loed in Michigan and Minnesota. .. which is related to our U.S. Iron Ore operations for selenium management and various water treatment, air quality, dust control, tailings management and 

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  • World Mineral Statistics 19982002 British Geological Survey

    sphates Platinum Potash Pyrites Rare earths Salt Selenium Silicon Sillimanite Silver Strontium Sulphur Talc Tantalum Tellurium Tin Titanium Tungsten Uranium Vanadium Vermiculite Wollastonite Zinc Zirconium Alumina. Graphite Gypsum Iodine Iron ore Iron and steel Kaolin Lead Lithium Magnesite and Magnesia 

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  • Methods for Removing Selenium from Aqueous Systems InfoMine

    Nov 6, 2011 The iron can first reduce selenate to selenite, forming ferric and ferrous hydroxides. In turn, the ferric and ferrous hydroxides can complex with selenites, resulting in a precipitate. At Barrick's Richmond Hill Mine, ferric sulfate was used to precipitate "selenium" at a pH of 4.5 and this reduced selenium.

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  • Update on Selenium Projects at Tilden and State of Michigan

    Cliffs Natural Resources' Michigan Operations. Tilden and Empire Mines move over 60 million tons of rock annually in order to produce approximately 12 million tons of iron pellets. This large scale operation generates significant environmental interest. This newsletter will focus on selenium and the Empire Mine closure.

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  • selenium as an indior element in geochemical exploration

    form or to selenite, it is adsorbed onto colloids, and migrates with difficulty. Therefore, high selenium contents occur in colloidrich sediments in restricted areas near sulphide mineralizations. The mineralizations can be loed by analysing such sediments as gossan, till, lake and river sediment, and organic and ironrich 

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  • Mineral Resource of the Month: Selenium EARTH Magazine

    Selenium is recovered as a byproduct of nonferrous metal ore processing, principally from the anode slimes associated with electrolytic refining of copper. Slimes from Selenium is used in the production of container glass and other sodalime silica glass to decolorize the green tint caused by iron impurities. It is also used 

    Online
  • Determination of the selenium contents of waste rocks of iron ore

    Western Australian School of Mines. Department of Applied Geology. Determination of the selenium contents of waste rocks of iron ore mining in the. Pilbara, Western Australia using ICPMS. Donya Rajabian Tabesh. This thesis is presented for the Degree of. Master of Philosophy (Geology) of. Curtin University. September 

    Online
  • Update on Selenium Projects at Tilden and State of Michigan

    the Empire Mine waste rock piles, the historic iron mine caving grounds, and the City of. Negaunee. In the early 20th century, the untreated sewage from Negaunee was routed to Goose Lake. The Michigan Department of. Environmental Quality (MDEQ) estimates that up to 20,000 pounds of phosphorus entered the lake 

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  • Selenium Wikipedia

    Selenium is a chemical element with symbol Se and atomic number 34. It is a nonmetal with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic. It rarely occurs in its elemental state or as pure ore compounds in the Earth's 

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  • Selenium Removal Technologies A Review Water Online

    Jan 15, 2016 This concentrated regenerant must then be disposed of or further treated. BioteQ has its SelenIX process for selenium removal.This system is unique in that a small volume of spent regenerant solution is directed to a selenium electrochemical reduction step, where iron is added to form an ironselenium 

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  • Selenium content in sulfide ores from the Chalkidiki peninsula

    J Environ Pathol Toxicol Oncol. 199817(34):18997. Selenium content in sulfide ores from the Chalkidiki peninsula, Greece. Nicolaidou AE(1). Author information: (1)General Secretariat of Research & Technology, Athens, Greece. Selenium (Se) was assessed in galena, sphalerite, and pyrite samples. These are 

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  • Selenium Tellurium Development Association

    They are widely dispersed in the earth's crust at average levels less abundant than silver. They rank 69th and 75th, respectively, in order of abundance. There are no ores from which Se can be mined as a primary product. It is found principally in sulfide minerals of copper iron, and lead and is most common in chalcopyrite, 

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