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Friday, July 31, 2020 | History

2 edition of Effect of sulfide minerals on ferrous alloy grinding media corrosion found in the catalog.

Effect of sulfide minerals on ferrous alloy grinding media corrosion

A. E. Isaacson

Effect of sulfide minerals on ferrous alloy grinding media corrosion

by A. E. Isaacson

  • 23 Want to read
  • 10 Currently reading

Published by U.S. Dept. of the Interior, Bureau of Mines in Washington, D.C .
Written in English

    Subjects:
  • Milling machinery -- Corrosion.,
  • Iron alloys -- Corrosion.,
  • Sulphide minerals.

  • Edition Notes

    Bibliography: p. 19.

    Statementby A.E. Isaacson.
    SeriesReport of investigations / United States Dept. of the Interior, Bureau of Mines ;, 9244, Report of investigations (United States. Bureau of Mines) ;, 9244.
    Classifications
    LC ClassificationsTN23 .U43 no. 9244, TN505 .U43 no. 9244
    The Physical Object
    Pagination19 p. :
    Number of Pages19
    ID Numbers
    Open LibraryOL1811085M
    LC Control Number89600005

      Ferrous alloys were widely used as early as BCE, and continue to be used in a wide variety of applications. Some common ferrous alloys include: Carbon steel is used in structural applications. Stainless steel is a type of ferrous alloy that has high amounts of chromium added to enhance its resistance to corrosion. 90/10 and 70/30 Alloys Technical Data, Publication TN 31, September , CDA UK,.; Aluminum Bronzes - Part I, Innovations, August , The aluminum bronzes offer a combination of mechanical and chemical properties unmatched by other alloy series. They have excellent corrosion resistance, especially in seawater and similar environments, where the alloys often outperform many stainless .

    In a hydrometallurgical process for converting zinc sulfide in an ore containing zinc sulfide, the zinc sulfide being chemically converted at elevated temperatures to 2O which crystallizes substantially in the monohydrate form as ZnSO4.H2O in a conversion solution having a high concentration of H2SO4, the improvement comprises: (i) selecting an ore which contains both zinc sulfide . @article{osti_, title = {Effect of iron on transpassive dissolution of stainless alloys}, author = {Arlt, N}, abstractNote = {Investigations were performed on the capacity of the alloying element iron to suppress transpassive dissolution of stainless materials. It was earlier observed that due to this property stainless steels and other ferrous stainless alloys are resistant to.

    @article{osti_, title = {Simultaneous corrosion and abrasion measurements under grinding conditions}, author = {Kotlyar, D. and Pitt, C.H. and Wadsworth, M.E.}, abstractNote = {The contribution of corrosion to the abrasive-corrosive wear of high carbon low alloy steel (HCLA), commonly used for grinding balls, was evaluated in 15% quartz slurries. Because of their energy structure, most of the sulfide minerals exhibit semiconductor properties (Marsden & House, ). Therefore, the contact between constitutive sulfide minerals inside complex sulfurous ores entrains electrochemical phenomena in which sulfide dissolution is a genuine corrosion process (Azizi, Petre, Olsen & Larachi, ).


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Effect of sulfide minerals on ferrous alloy grinding media corrosion by A. E. Isaacson Download PDF EPUB FB2

Additional Physical Format: Online version: Isaacson, A.E. (Alan E.). Effect of sulfide minerals on ferrous alloy grinding media corrosion. Washington, D.C.: U.S.

The U.S. Bureau of Mines determined the effect of common sulfide minerals on the corrosion rates of various types of ferrous alloy grinding media. Data obtained from this study will aid in determining the contribution of any electrochemical reactions between sulfide minerals and grinding media to the total grinding media consumption.

"The U.S. Bureau of Mines determined the effect of common sulfide minerals on the corrosion rates of various types of ferrous alloy grinding media. Data obtained from this study will aid in determining the contribution of any electrochemical reactions between sulfide minerals and grinding media to the total grinding media consumption.

Grinding Media Corrosion. We determined the effect of common sulfide minerals on the corrosion rates of various types of ferrous alloy grinding media. Data obtained from this study will aid in determining the contribution of any electrochemical reactions between sulfide minerals and grinding media to the total grinding media.

Effect of sulfide minerals on ferrous alloy grinding media corrosion / By A. (Alan E.) Isaacson. Abstract. Topics: Sulfide minerals., Iron alloys, Milling machinery.

The electrochemical nature of mineral-grinding media interaction in the wet grinding of one and two sulfide mineral ores was investigated with regard to the flotation behaviors of the minerals.

The iron sulfide minerals present in MB are either greigite or a mixture of greigite and transient nonmagnetic iron ferrous sulfide and HCl, aluminum sulfide and water), sulfate-reducing bacteria, and in mammalian tissues. During hydrogen sulfide production microorganisms can directly or indirectly contribute to the corrosion of metals.

International Journal of Mineral Processing, 12 () 39 Elsevier Science Publishers B.V., Amsterdam -- Printed in The Netherlands GRINDING MEDIA WEAR AND ITS EFFECT ON THE FLOTATION OF SULFIDE MINERALS K.

ADAM, K.A. NATARAJAN and I. IWASAKI Mineral Resources Research Center, University of Minnesota, 56 East River Road, Minneapolis, MN.

Grinding media wear is very dependent upon manufacturing processes, alloying elements, heat treatments, grinding conditions and chemical corrosion reactions. View Show abstract. At present, the mineral processing technology of non-ferrous metal sulfide ore mainly is flotation electrochemical technology, bioleaching technology, grinding and floating technology, the bioleaching technology of which used most widely.

The good application of bioleaching process can extract mineral resource scientific, quality, and low cost. USA US06/, USA USA US A US A US A US A US A US A US A US A US A Authority US United States Prior art keywords process ferrous sulfide ferrous sulfide maleic acid Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.

Iron sulfide corrosion product layers commonly form on mild steel surfaces corroding in aqueous H 2 S environments. These porous layers present a barrier which may reduce the corrosion rate, however, their semi-conductive nature leads to an acceleration of corrosion via galvanic coupling, by increasing the cathodic surface area.

Grinding Media — Its Effect on Pulp Chemistry and - Magotteaux. Broadly, most sulfide minerals are more noble than forged steel grinding media used Total wear in grinding mills is made up of abrasion, corrosion and impact. Copper and its alloys undergo a different form of crevice corrosion than do ferrous or in veneer mills.

The research work on the influences of grinding media on mineral flotation behavior has been conducted previously by various scholars. In the early s, Rey and Formanek pointed out that the floatability of iron-ball milling of galena and sphalerite was worse than the porcelain ball milling of galena [].The work by Forssberg, Yuan and their collaborators found that the grinding of minerals.

Abstract. A study made of factors influencing sulfide-stress corrosion of a number of low alloy and medium alloy steels showed that their delayed failures when exposed simultaneously to stress and the corrosive action of acidified brine-hydrogen sulfide solutions have most of the features of hydrogen induced, delayed brittle failures.

Effect of sulfide minerals on ferrous alloy grinding media corrosion A. IsaacsonCongresses, Corrosion Dept.

of Scientific and Industrial Research., 1 book Association of Operative Millers., 1 book Cincinnati Milling Machine Company. In addition, articles focus on clays, ceramics, composites, ferrous metals, non-ferrous metals, minerals, electronic, magnetic, environmental, advanced and soft materials.

This book will serve the dual purpose of furnishing a broad introduction of the field to novices while simultaneously serving to keep subject matter experts up-to-date. Due to the differences in beneficiation methods and mineral properties between cassiterite ore and polymetallic sulfide ore, there is an inherent contradiction between cassiterite overgrinding and sulfide ore undergrinding.

A method to optimize and characterize the grinding performance is presented in this paper. In this method, the grinding characteristics are defined by the qualified.

Corrosion is a natural process that converts a refined metal into a more chemically stable form such as oxide, hydroxide, or is the gradual destruction of materials (usually a metal) by chemical and/or electrochemical reaction with their environment.

Corrosion engineering is the field dedicated to controlling and preventing corrosion. In the most common use of the word, this means. Effects of Alloying Elements in Nickel-Base Alloys The different elements that make up an alloy can drastically change the mechanical properties, corrosion resistance and the metal's microstructure.

While chromium, nickel, molybdenum, iron may be the primary alloying elements, other elements like tungsten, carbon, aluminum, titanium, copper and sulfur. The sulfide minerals are a class of minerals containing sulfide (S 2−) or persulfide (S 2 2−) as the major sulfide minerals are economically important as metal sulfide class also includes the selenides, the tellurides, the arsenides, the antimonides, the bismuthinides, the sulfarsenides and the sulfosalts.

Sulfide minerals are inorganic compounds.The composition of the sulfide minerals can be expressed with the general chemical formula A m S n, in which A is a metal, S is sulfur, and m and n are integers, giving A 2 S, AS, A 3 S 4 and AS 2 stoichiometries. The metals that occur most commonly in sulfides are iron, copper, nickel, lead, cobalt, silver, and zinc, though about fifteen others enter sulfide structures.This study was aimed to investigate the galvanic interaction between pyrite and chalcopyrite with two types of grinding media (low alloy and high carbon chromium steel ball) in grinding of a porphyry copper sulphide ore.

Results indicated that injection of different gases into mill altered the oxidation-reduction environment during grinding.