Contamination of quartz by iron in energy-intensive grinding in air and liquids of various polarity

Tkáčová, K.; Števulová, Nadežda; Lipka, J.; Šepelák, V.

doi:10.1016/0032-5910(94)02953-l

Cited by 21 publications

(11 citation statements)

References 8 publications

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“…The XRD pattern of the nonactivated sample (Figure 3a An extensive study 44,45 of the influence of the milling conditions on the contamination of oxide (SiO 2 ) powders by metallic iron during high-energy milling has shown that the Fe content originating from the abrasion of the metallic milling tools increases with increasing milling time and specific mill power. However, under conditions of dry milling, abrasion exhibits a saturation behavior limiting iron wear to about 0.7 at.…”

Section: Resultsmentioning

confidence: 99%

Mechanochemical Reduction of Magnesium Ferrite

et al. 2002

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The changes in magnesium ferrite, MgFe 2 O 4 , due to high-energy milling in a stainless steel vial have been investigated by Mössbauer spectroscopy, X-ray diffraction, electron microscopy, and thermal analysis. The milling process reduces the average crystallite size of MgFe 2 O 4 to the nanometer range. Prolonged mechanical treatment leads to the chemical reduction of MgFe 2 O 4 and to the formation of a solid solution of FeO and MgO. In addition to the solid solution, metallic iron has been found as a byproduct. The fraction of the reaction products increases with increasing milling time. The range of thermal stability of the metastable milled reduction products has been determined by studying their response to changes in temperature.

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Section: Resultsmentioning

confidence: 99%

Mechanochemical Reduction of Magnesium Ferrite

et al. 2002

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“…In Omarov et al (1994), the participation of the milling tools' steel material in the process of mechanochemical sulfidizing of some oxidized copper minerals in the presence of water was shown and the sulfidizing mechanism was established for the first time. In Tkácová et al (1995), the influence of mill power and grinding environment on the contamination of quartz by iron during vibration grinding was studied. It was found that the Fe content in ground powders increased with increasing specific milling energy.…”

Section: Introductionmentioning

confidence: 99%

Mineral processing by the abrasive–reactive wear

Уракаев

2009

International Journal of Mineral Processing

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“…Many authors mentioned this problem in their works on mechanochemistr y. Moreover, some concrete examples of the possible participation of the milling tools' material in mechanochemical processes were reported [13][14][15][16][17][18][19][20][21] , but these works have not been followed up on.…”

Section: Introductionmentioning

confidence: 99%

“…In 15) , the participation of the milling tools' steel material in the process of mechanochemical sulfidizing of some oxidized copper minerals in the presence of water was shown and the sulfidizing mechanism was established for the first time. In 16) , the influence of mill power and grinding environment on the contamination of quartz by iron during vibration grinding was studied. It was found that the Fe content in ground powders increased with increasing specific milling energy.…”

Section: Introductionmentioning

confidence: 99%

“…The amorphous phase has a rather high Fe content and is distinctly different from the initial amorphous silica. On the other hand, for example, the chemical activity of ammonium thiocyanate or the high hardness of boron resulted in wear to the steel material of the milling tools of the MR, the particles of abraded iron entered into mechanochemical reactions with the treated mix of reagents [22][23][24][25] , and the quartz and other mineral particles were modified by abrasion from iron compounds [13][14][15][16][17][18][19][20][21] . From these scattered repor ts it is evident that regular research of the participation of a material of milling tools in the course of mechanochemical reactions was not carried out.…”

Section: Introductionmentioning

confidence: 99%

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Phenomenology, Kinetics and Application of Abrasive-Reactive Wear during Comminution (Overview)

Уракаев

Шевченко

2007

KONA

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Valuable information on the phenomenology of mechanical activation will be obtained from the accurate characterization of wearing processes that take place within mechanochemical reactors. Favoring the contamination of reactant powders with material from a reactor s debris, for a long time such processes represented one of the greatest limitations to practical mechanochemistry applications. We will focus on two related aspects of mechanochemical processing by grinding in a ball mill: (i) nanoscale wear of the treated substances and of the milling tools (balls and container wall); and (ii) deposition of a powder coating on the surface of the milling tools (self-lining phenomenon). A new technology called abrasive-reactive wear (ARW) has been developed that utilizes wear debris as an integral component of the reaction system rather than treating it as a harmful impurity. This technology is applied to the preparation of nanocomposites and to the processing of mineral raw materials and industrial byproducts. This review includes preparation experiments, material characterization, ARW kinetics and simulation. Besides developing new technologies, ARW will contribute to a better understanding of the mechanochemical or mechanical alloying process in general.

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Contamination of quartz by iron in energy-intensive grinding in air and liquids of various polarity

Cited by 21 publications

References 8 publications

Mechanochemical Reduction of Magnesium Ferrite

Mechanochemical Reduction of Magnesium Ferrite

Mineral processing by the abrasive–reactive wear

Phenomenology, Kinetics and Application of Abrasive-Reactive Wear during Comminution (Overview)

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