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Jan 15, 2018 · This work extends previous research by the authors (Rabieh et al. (2017b), which investigated the interactions between grinding media and pyrrhotite on cyanide leaching of gold from ores containing 2% gold-bearing pyrrhotite. As pyrrhotite is a highly reactive iron sulfide it significantly amplified the grinding media-ore interaction and the effects on cyanide leaching of gold was highly …

Product Articles

  • influence of pyrrhotite on the corrosive wear of grinding

    influence of pyrrhotite on the corrosive wear of grinding

    Jun 01, 1984 · In the absence of sulfide-bearing minerals such as pyrrhotite, corrosive wear of the grinding balls in the wet grinding of magnetite ore was relatively small, even in the pres- ence of oxygen. The presence of pyrrhotite significantly increased the corrosive wear of mild steel and HCLA steel balls, especially in the presence of oxygen

  • practical aspectsof corrosionin thewear of grinding

    practical aspectsof corrosionin thewear of grinding

    Factors affecting the occurrence of pitting include the abrasiveness of the ore, corrosivity of the slurry, corrosion resistance of the media, and galvanic coupling effects. Elimination of pitting substantially improves overall wear resistance. When pitting is not observed, the contributions of general corrosion are significantly less

  • effect of coalon the corrosive wear of grinding media

    effect of coalon the corrosive wear of grinding media

    Marked ball wear tests were performed to study the effects of oxygen, pH, the soluble species of coal, and the addition of pyrrhotite on ball wear. The synergistic action of coal and oxygen greatly enhanced the corrosion of mild steel balls during grinding

  • corrosiveand erosivewearin magnetic taconitegrinding

    corrosiveand erosivewearin magnetic taconitegrinding

    The influence of pyrrhotite on the corrosive wear of grinding balls in magnetite ore grinding was studied using three types of balls, namely, mild steel, high carbon low alloy (HCLA) steel and

  • galvanic interaction of grinding media with arsenopyrite

    galvanic interaction of grinding media with arsenopyrite

    Jan 15, 2018 · This work extends previous research by the authors (Rabieh et al. (2017b), which investigated the interactions between grinding media and pyrrhotite on cyanide leaching of gold from ores containing 2% gold-bearing pyrrhotite. As pyrrhotite is a highly reactive iron sulfide it significantly amplified the grinding media-ore interaction and the effects on cyanide leaching of gold was highly …

  • effect of pyrite and pyrrhotite on the corrosive wear of

    effect of pyrite and pyrrhotite on the corrosive wear of

    Freshly abraded metal debris were magnetically attracted to pyrrhotite and lowered the rest potentials of the mineral particles, thereby affecting the corrosive wear. The investigation was extended to explore the interactions between a nonmagnetic sulfide mineral, pyrite, and abraded metal debris and their effects on the corrosive wear mechanism. The electrochemical behavior of a three

  • corrosive and abrasive wear in ore grinding sciencedirect

    corrosive and abrasive wear in ore grinding sciencedirect

    Jun 01, 1985 · Corrosive wear In the presence of electroactive minerals such as pyrrhotite and mag- netite, galvanic coupling between the mineral and the grinding ball in the slurry would generate a corrosion current which would be further increased as the oxygen partial pressure is increased

  • (pdf) corrosive and abrasive wear in ore grinding

    (pdf) corrosive and abrasive wear in ore grinding

    Results indicate that abrasive wear plays a significant role in ore grinding in the absence of sulfides, and rheological properties of the ore slurry influenced such wear. The effect of oxygen on

  • nature of corrosive and abrasive wear in ball mill grinding

    nature of corrosive and abrasive wear in ball mill grinding

    Apr 01, 1988 · Direct interaction between pyrrhotite and mild steel balls, therefore, leads to higher corrosive wear in the grinding of taconite in the presence of pyrrhotite (Table II). ABRASIVE WEAR Grinding in a ball mill involves breakage via direct impact of falling balls as well as indirect impact propagated through other balls and abrasion between spinning balls

  • corrosive and erosive wear in magnetic taconite grinding

    corrosive and erosive wear in magnetic taconite grinding

    The influence of pyrrhotite on the corrosive wear of grinding balls in magnetite ore grinding was studied using three types of balls, namely, mild steel, high carbon low alloy (HCLA) steel and

  • practical aspects of corrosion in the wear of grinding

    practical aspects of corrosion in the wear of grinding

    May 01, 1987 · Factors affecting the occurrence of pitting include the abrasiveness of the ore, corrosivity of the slurry, corrosion resistance of the media, and galvanic coupling effects. Elimination of pitting substantially improves overall wear resistance. When pitting is not observed, the contributions of general corrosion are significantly less

  • effect of coal on the corrosive wear of grinding media

    effect of coal on the corrosive wear of grinding media

    May 01, 1990 · Marked ball wear tests were performed to study the effects of oxygen, pH, the soluble species of coal, and the addition of pyrrhotite on ball wear. The synergistic action of coal and oxygen greatly enhanced the corrosion of mild steel balls during grinding

  • factors affectingwearin tumbling mills influenceof

    factors affectingwearin tumbling mills influenceof

    Apr 01, 1988 · Change in wear rate due to mixing of mild steel balls with 30% chromium cast iron balls in a quartz + 10% pyrrhotite system. microstructure plus the aggressively corrosive conditions resulted in an in- creased wear rate compared with the HCLA and MSS steel balls, even though the HCCI ball was harder than the HCLA and MSS balls

  • (pdf)an investigation of the corrosive wearof steel

    (pdf)an investigation of the corrosive wearof steel

    The mass losses of steel balls through total wear and corrosive wear in grinding process Figures - available via license: Creative Commons Attribution 4.0 International Content may be subject to

  • assessment of wear mechanisms in grinding media

    assessment of wear mechanisms in grinding media

    The effect of grinding media composition, mineral type, and slurry environment on the wear rate of various grinding media (balls) are discussed. Sufficient wear data have been obtained and correlated. Modes of wear were determined from examination of the ball surfaces using scanning electron microscopy. Five modes of wear have been identified to be operative under certain slurry conditions …

  • influence of pyrrhotite on the corrosive wear of grinding

    influence of pyrrhotite on the corrosive wear of grinding

    The influence of pyrrhotite on the corrosive wear of grinding balls in magnetite ore grinding was studied using three types of balls, namely, mild steel, high carbon low alloy (HCLA) steel and austenitic stainless steel under different aeration conditions

  • pyrrhotite grindingmedia interaction and its effect on

    pyrrhotite grindingmedia interaction and its effect on

    During wet grinding the electrochemical interactions between grinding media and pyrrhotite not only acelerate media wear but also adversely affect the sulfide minerals flotation response. A possible remedy of the adverse effects on floatability by applying electric potentials to grinding media was examined

  • nioshtic 2 publications search 10005788

    nioshtic 2 publications search 10005788

    Freshly abraded metallic debris particles generated by abrasive wear of the grinding media lowered the corrosive wear of the media by affecting the electrochemical behavior of the minerals, particularly for a magnetic mineral such as pyrrhotite

  • a studyon the corrosiveand abrasivewear of grinding

    a studyon the corrosiveand abrasivewear of grinding

    The effect of oxygen on corrosive wear becomes increasingly felt in the presence of a sulfide mineral such as pyrrhotite

  • (pdf)an investigation of the corrosive wearof steel

    (pdf)an investigation of the corrosive wearof steel

    The mass losses of steel balls through total wear and corrosive wear in grinding process Figures - available via license: Creative Commons Attribution 4.0 International Content may be subject to

  • an investigation of thecorrosive wearof steel balls in

    an investigation of thecorrosive wearof steel balls in

    Ball mills are common grinding equipment in mineral processing industries. Ball wear results from three mechanisms namely impact, abrasion and corrosion. Of these, the corrosion mechanism is the least investigated, due to its chemical-electrochemical nature. Therefore, the aims of this research were to investigate the grinding chemistry influence (slurry pH, solid percentage, water chemistry

  • effects ofpercent solids and mill loadingon ballwearin

    effects ofpercent solids and mill loadingon ballwearin

    Natarajan, K.A., Riemer, S.C., and Iwasaki, I., 1984b, “Influence of Pyrrhotite on the Corrosive Wear of Grinding Balls in Magnetic Ore Grinding,” International Journal of Minerals Processing, Vol. 13, pp. 73–81. Article; Google Scholar

  • galvanic interaction between chalcopyrite and pyritewith

    galvanic interaction between chalcopyrite and pyritewith

    It has been widely accepted that the grinding environment of sulfide minerals such as pyrite, arsenopyrite, chalcopyrite, galena, pyrrhotite, and sphalerite has a pronounced effect on the recovery and selectivity of sulphide minerals [ 3 – 10

  • assessment of wear mechanisms in grinding media

    assessment of wear mechanisms in grinding media

    The effect of grinding media composition, mineral type, and slurry environment on the wear rate of various grinding media (balls) are discussed. Sufficient wear data have been obtained and correlated. Modes of wear were determined from examination of the ball surfaces using scanning electron microscopy. Five modes of wear have been identified to be operative under certain slurry conditions …

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