Comparative analysis of process parameters of talc mechanical activation in centrifugal and attrition mill

• Autorzy: Andric L. , Terzic A. , Acimovic-Pavlovic Z. , Pavlovic L. , Petrov M.

Identyfikatory

DOI

10.5277/ppmp140202

• Języki publikacji: EN

Abstrakty

EN

The efficiency of talc mechanical activation by means of two different mechano-activators - centrifugal and attrition mill is investigated in this study and the comparative analysis of the characteristics of obtained talc powders is presented. A new approach for obtaining high-grade talc concentrate with low Fe2O3 content is achieved through effect of mechanical activation of talc accompanied by hydrometallurgical process. The applied mechanical activation process conditions of ultra-centrifugal mill were defined by number of rotor revolutions, sieve mesh size, and current intensity. These operating parameters of the ultra-centrifugal mill were variable. Ultra fine grinding of talc in attrition mill (attritor) was carried out in various time intervals - from 5 to 15 min. The following technological parameters of the mechanical activation were monitored: time of mechanical activation, circumferential rotor speed, capacity of ultra-centrifugal mill, and specific energy consumption. The investigation was based on a kinetic model. The structure and behavior of activated samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) analysis, and differential thermal analysis (DTA).

Słowa kluczowe

EN

talc; mechanical activation; ultra fine grinding; ultra-centrifugal mill; attrition mill

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2014
• Tom: Vol. 50, iss. 2
• Strony: 433--452
• Opis fizyczny: Bibliogr. 27 poz., rys., tab.

Twórcy

autor

Andric L.

• Institute for Technology of Nuclear and Other Mineral Raw Materials, Franchet d’Esperey 86, Belgrade, Serbia

autor

Terzic A.

• Institute for Materials Testing, Vojvode Misica Blv. 43, Belgrade, Serbia

autor

Acimovic-Pavlovic Z.

• University of Belgrade, Faculty of Technology and Metallurgy, Karnegy st. 4, Belgrade, Serbia

autor

Pavlovic L.

• Institute for Technology of Nuclear and Other Mineral Raw Materials, Franchet d’Esperey 86, Belgrade, Serbia

autor

Petrov M.

• Institute for Technology of Nuclear and Other Mineral Raw Materials, Franchet d’Esperey 86, Belgrade, Serbia

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