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Thursday, July 23, 2020 | History

3 edition of Silver-catalyzed oxidative leaching of an arsenical copper sulfide concentrate found in the catalog.

Silver-catalyzed oxidative leaching of an arsenical copper sulfide concentrate

Silver-catalyzed oxidative leaching of an arsenical copper sulfide concentrate

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  • 28 Currently reading

Published by U.S. Dept. of the Interior, Bureau of Mines in Avondale, Md (4900 LaSalle Rd., Avondale 20782) .
Written in English

    Subjects:
  • Copper -- Metallurgy,
  • Sulfides,
  • Leaching,
  • Oxidation

  • Edition Notes

    Statementby K.P.V. Lei and T.G. Carnahan
    SeriesBureau of Mines report of investigations, Report of investigations (United States. Bureau of Mines)
    ContributionsCarnahan, T. G.
    The Physical Object
    FormatMicroform
    Paginationiv, 14 p
    Number of Pages14
    ID Numbers
    Open LibraryOL18285066M

    Reactions of sulphur mustard on impregnated carbons. PubMed. Prasad, G K; Singh, Beer. Activated carbon of surface area m2/gm is impregnated with 4% sodium hydrox. Rapid fixation of methylene chloride by a macrocyclic amine. PubMed. Lee, Jung-Jae; Stanger, Keith J; Noll, Bruce C; Gonzalez, Carlos; Marquez, Manuel; Smith, Bradley.

    世界有色金属(2): [11] Lei K P V,Carnahan T G. Silver-catalyzed oxidative leaching of an arsenical copper sulfide concentrate[J]. US Bur. Mines Rep. Invest.,: [12] Padilla R,Vega D,Ruiz M C. Pressure leaching of sulfidized chalcopyrite in sulfuric acid–oxygen media[J].


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Silver-catalyzed oxidative leaching of an arsenical copper sulfide concentrate Download PDF EPUB FB2

Silver-catalyzed oxidative leaching of an arsenical copper sulfide concentrate [K. Lei] on *FREE* shipping on qualifying offers. Silver-catalyzed oxidative leaching of an arsenical copper sulfide concentrate (OCoLC) Material Type: Government publication, National government publication: Document Type: Book: All Authors / Contributors: K P V Lei; T G Carnahan; United States.

Bureau of Mines. This paper describes Bureau pof Mines investigation of a silver-catalyzed oxidative procedure for leaching an arsenical copper sulfide concentrate containing 10 pct As and 32 pct Cu.

Leaching was conducted in a 2-L autoclave reactor. A conceptual process was proposed for treating arsenical copper. This paper describes Bureau of Mines investigation of a silver- catalyzed oxidative procedure for leaching an arsenical copper sulfide concentrate containing 10 pct as and 32 pct cu.

Leaching was conducted in a 2-l autoclave reactor. T.G. Carnahan's 3 research works with 72 citations and 56 reads, including: Copper-catalyzed thiosulfate leaching of low-grade gold ores.

"The Bureau of Mines investigated a silver-catalyzed oxidative procedure for leaching an arsenical copper sulfide concentrate containing 10 pct as and 32 pct cu. Currently, there are no environmentally safe means to treat arsenical copper concentrates in the United States.

Leaching was conducted in a 2-l autoclave by: 2. This paper describes Bureau pof Mines investigation of a silver-catalyzed oxidative procedure for leaching an arsenical copper sulfide concentrate containing 10 pct As and 32 pct Cu.

Leaching was. journal article: intensification of the autoclave soda leaching process for tungsten-- molybdenum concentrates. Buy Silver-catalyzed oxidative leaching of an arsenical copper sulfide concentrate (Bureau of Mines report of investigations) by K.

V Lei (ISBN:) from Amazon's Book Store. Everyday low prices and free delivery on eligible : K. V Lei. Effect of green light on spectral response of cuprous sulfide - cadmium sulfide photovoltaic cells / (Washington, D.C.: National Aeronautics and Space Administration: [For sale by the Office of Technical Services, Dept.

of Commerce], []), by Rose L. Schalla, Henry W. Brandhorst, William B. Berry, Andrew E. Potter, and United States. Role of construction debris in release of copper, chromium, and arsenic from treated wood structures (U.S.) (page images at HathiTrust) Leaching of wood preservative components and their mobility in the environment: summary of pertinent literature Reactions of copper sulfide minerals with chlorine in an aqueous system.

Leaching curves for the dissolution of copper from the copper-zinc concentrate in primary leaching at different temperatures.

Conditions: pulp density 1 wt%, pH12 g/1 Fe3+, 8 h. Zn Extraction (%) 80 60 40 20 0 0 Time (min) 25 + 60C -X 70 f 80 -X 90 Fig. by: The Activox Process (Corrans et al., ), the CESL Process (Jones, ), the Dynatec Process (Kofluk and Collins, ), and the MIM Albion Process (Hourn and Halbe, ) have been known for some time and are well represented in the this chapter, the focus will be to review a number of newer sulfate processes that show particular commercial promise for advancing the state of Cited by: 1.

ri / silver-catalyzed oxidative leaching of an arsenical copper sulfide concentrate, pb, $ 12 ri / dual leaching method for recovering silver and manganese from domestic manganiferous silver deposits, pb, $ 6 ri / in situ comparison of radial and point-attack bits, pb, $ 7.

In this work, a comparative study is performed using silver and bismuth in the bioleaching of a copper concentrate with thermophilic (68 °C) and mesophilic (35 °C) bacteria.

The experiments were carried out in shake flasks at 1 % pulp density. The quantity of silver added to both the thermophilic and mesophilic cultures was lg Ag/kg by: 6. Abstract. This research was conducted to investigate the biooxidation and copper dissolution from raw low-grade refractory copper sulphide ores located in the Xinjiang Autonomous Region of China using adapted Thiobacillus ferrooxidans bacteria.

In order to accelerate the bioleaching rate, the adapted mixed bacteria and silver ion catalyst were tested in the leach columns at laboratory Author: Tianlong Deng, Tianlong Deng, Yafei Guo, Mengxia Liao, Dongchan Li. World copper (Cu) production has been strongly affected by arsenic (As) content, because As-rich Cu concentrates are not desirable in the metal foundries.

When As-rich Cu concentrates are processed by smelting they release As as volatile compounds into the atmosphere and inside furnaces, generating serious risks to human health. In recent years, exports of Cu concentrates are being penalized Cited by: 3.

Fig. Effect of pulp density on the silver- catalyzed bioleaching of arsenopyrite over 16 days: the arsenic leaching rate (a) redox potential; (b) versus time respectively. of pH.

The pH in the mineral leaching process should not only fit the bacterial growth but also fit the leaching of the mineral. copper mother Download Book Copper Mother in PDF format. You can Read Online Copper Mother here in PDF, EPUB, Mobi or Docx formats.

Silver Catalyzed Oxidative Leaching Of An Arsenical Copper Sulfide Concentrate Author: Kenneth P. Lei. As supplies of high-grade base metal concentrates diminish, the treatment of complex sulphide materials, which often contain a significant fraction of silver must be considered.

Acid pressure oxidation is a promising process for these materials and silver recovery will play a major role in the economy of the process.

However, in acid pressure oxidation processing, silver is incorporated into Cited by: 5. Silver-catalyzed oxidative leaching of an arsenical copper sulfide concentrate | Lei, K.

P. V. | ISBN: | Kostenloser Versand für alle Bücher mit Versand und Verkauf duch : Taschenbuch.Amazon配送商品ならSilver-catalyzed oxidative leaching of an arsenical copper sulfide concentrateが通常配送無料。更にAmazonならポイント還元本が多数。Lei, K.

P. V.作品ほか、お急ぎ便対象商品は当日お .The bioleaching of sulphide minerals The main research topics in the bioleaching literature are (i) fundamentals and modeling of bioleaching chemistry (and to a small extent, mineralogy), (ii) microbiology, (iii) bioleaching of selected sulphide minerals, commonly asso- ciated with specific ores or mines, and (iv) the engineering aspects of.