Temat: contact rate - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Selected mineral materials grinding rate and its effect on product granulometric composition
Autorzy:: Olejnik, T. P.
Powiązania:: https://bibliotekanauki.pl/articles/110220.pdf
Data publikacji:: 2013
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: ball mill
specific grinding rate
contact points
size distribution
Opis:: The article presents investigation on the grinding rate constant. A selection function was measured for different raw materials using a ball mill, and effects of the grinding ball diameter and feed particle sizes on the materials grinding rate constant were investigated. The study was conducted for the mill on a semi-technical scale. The process was carried out periodically using several sets of grinding media. Relations for all investigated materials were expressed by the modified Snow equation. Additionally, the descriptions of the grinding rate was examined. The tendency in the variation of the grinding rate constant with the particle size was similar for all materials used, and was independent of the ball diameter. The author used two selection functions derived theoretically by Tanaka.
Źródło:: Physicochemical Problems of Mineral Processing; 2013, 49, 2; 407-418
1643-1049
2084-4735
Pojawia się w:: Physicochemical Problems of Mineral Processing
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Analysis of the breakage rate function for selected process parameters in quartzite milling
Autorzy:: Olejnik, T. P.
Powiązania:: https://bibliotekanauki.pl/articles/185104.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: wskaźnik szlifowania
morfologia ziaren
punkt kontaktowy
ball mill
specific grinding rate
grain morphology
contact points
Opis:: The paper presents the results of studies on quartzite milling in a ball mill. The milling was conducted in a batch system, for diversified compositions of balls. The milling product was subjected to granulometrical, morphological and strength analyses. On the basis of the developed Reid's theory and using the Austin-Gardner equation, a form of the function circumscribing the specific rate of comminution of selected size fractions was determined. The values of the breakage rate function bi, for the mill's apparatus conditions were determined. The impact was investigated for a variable number of grinding media contact points on the values of specific rate S and the values of the breakage rate function bij. Furthermore, the values of coefficients occurring in the equations circumscribing the specific rate of milling S and breakage parameter bij were determined.
Źródło:: Chemical and Process Engineering; 2012, 33, 1; 117-129
0208-6425
2300-1925
Pojawia się w:: Chemical and Process Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

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