• Iron Sulfide - an overview | ScienceDirect Topics

    Iron Sulfide - an overview | ScienceDirect Topics

    Mining and Pollution. When iron sulfide minerals are exposed to the atmosphere and water, the water becomes acid and enriched in iron that eventually leaves yellow and reddish deposits in its wake. Other metal sulfides also react with the atmosphere and water to release toxic metals such as arsenic, cadmium, cobalt, copper, nickel, and zinc

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  • Sulfide Minerals - an overview | ScienceDirect Topics

    Sulfide Minerals - an overview | ScienceDirect Topics

    Mining and Pollution. When iron sulfide minerals are exposed to the atmosphere and water, the water becomes acid and enriched in iron that eventually leaves yellow and reddish deposits in its wake. Other metal sulfides also react with the atmosphere and water to release toxic metals such as arsenic, cadmium, cobalt, copper, nickel, and zinc

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  • Sulfide precipitation of heavy metals

    Sulfide precipitation of heavy metals

    A full-scale sulfide precipitation process (Na2S as sulfide source) with a capacity of 1.0 x 106 gallons per day is operating at Boliden Metall Corporation of Sweden to treat smelter (Cu, Pb, Zn smelting) wastewaters. One copper smelter in Japan has a sulfide precipitation process to

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  • 12.3 Primary Copper Smelting

    12.3 Primary Copper Smelting

    Pyrometallurgical techniques use heat to separate copper from copper sulfide ore concentrates. Process steps include mining, concentration, roasting, smelting, converting, and finally fire and electrolytic refining. 12.3.2 Process Description2-4 Mining produces ores with less than 1 percent copper. Concentration is accomplished at the

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  • EXTRACTING METALS FROM SULFIDE ORES

    EXTRACTING METALS FROM SULFIDE ORES

    That is, the process involves anodic oxidation of the sulfide, a reaction that gives electrons to the mineral; these electrons are released again by the simultaneous cathodic reduction of oxygen. Since the sulfide ore-body is conducting, the anodic and cathodic processes can occur at different places. Thus, ore-bodies, when exposed to

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  • Sulfide Mining Near BWCA – Ely Minnesota

    Sulfide Mining Near BWCA – Ely Minnesota

    Aug 24, 2010 The process of mining copper and nickel are so different from the process of mining iron ore that we, as residents of this area, and anyone who values the BWCA and their experiences here, must look carefully at the downside of sulfide mining and

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  • Sulphide Gold Ore Treatment by Leaching and Flotation Process

    Sulphide Gold Ore Treatment by Leaching and Flotation Process

    Apr 18, 2016 A Flowsheet to recovery gold from sulfide ores. There are many arrangements and combinations using flotation in conjunction with treatment of gold ores. The two gold process flowsheets shown, with some variations, are probably the most commonly used. In Gold Flowsheet No. 1 the ore is ground in water to such a size as to free the minerals

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  • Chapter 6 Copper Production Technology

    Chapter 6 Copper Production Technology

    Copper minerals, iron and other metallic pyrites, byproducts, and gangue Same as mining but in the form of fine particles Copper minerals, iron pyrites, miscellaneous minerals (including valuable byproducts), and water (8-10%) Copper sulfide (CU2S), iron sulfide (FeS), byproducts, tramp elements, and up to 3 /0 dissolved oxygen

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  • Development of a Reactive Sulfate Transport Model for

    Development of a Reactive Sulfate Transport Model for

    Range in northeastern Minnesota. The sulfate is released via the oxidation of iron sulfide minerals such as pyrite in mine tailings and stock piles. Although iron sulfide minerals occur naturally in small amounts on the Iron Range, the mining process involves blasting and crushing

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  • Sulfide Mining Fact Sheet - MEPartnership

    Sulfide Mining Fact Sheet - MEPartnership

    Sulfide mining is different from traditional iron ore mines and taconite mining (sometimes referred to as ferrous mining). Sulfide mines have never been operated safely – no mine of this type has been known to have operated and closed without polluting local lakes, rivers, or

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  • Sulfide Mining Overview

    Sulfide Mining Overview

    Sulfide Mining Process The sulfide mining process consists of: exploration, site preparation, mining, beneficiation, waste disposal and reclamation:

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  • Sulfur Mining | Processing Equipment | Flow Chart | Cases

    Sulfur Mining | Processing Equipment | Flow Chart | Cases

    Sulfur attaches to metal ions, creating a number of significant sulfide ore minerals such as galena (lead sulfide), pyrite (iron sulfide), chalcocite (copper sulfide), and sphalerite (zinc sulfide). Mined sulfur is mostly from salt domes or bedded deposits. The vast majority is produced as a by-product of oil refining and natural gas processing

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  • Spontaneous Combustion Management - Acid &

    Spontaneous Combustion Management - Acid &

    Spontaneous combustion is a process that affects a broad range of mining operations, including gold, silver, copper, lead-zinc, nickel, tin, iron ore and coal (brown and black). The process is initiated by the spontaneous oxidation of extremely reactive iron sulfide minerals (largely pyrite, marcasite or pyrrhotite), in a highly exothermic process that generates sulfur dioxide gas (SO 2 ) — a sulfide fire

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