Browsing by Subject "piana"

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Access status: Open Access ,
Wpływ zmian zagęszczenia mętów flotacyjnych węgla na ilość wody w produktach pianowych
(2006) Małysa, Ewa; Surowiak, Agnieszka
Results of coal flotation depend not only on surface properties of coal grains but can also be significantly affected by a degree of the gas phase dispersion, size of the air bubbles and properties of the froth layer formed. The paper aimed at determination of influence of the coal pulp density (solid parts concentration) and the pulp volume on water contents in the froth concentrates. It was found that amounts of water contained in the froth products depended on the coal pulp density. Highest water contents were obtained for the pulp density of 80 g/dm$^3$. This is an interesting result as it correlates well with the highest yield of the coal, which was obtained also at this pulp density. Water contents in the froth products were also analyzed as a function of the flotation time. It was observed that for all flotation times the highest water contents were at the pulp density of 80 g/dm$^3$. These data seem to indicate that there can exists a correlation between high coal yield and water contents in froth, but this question requires further studies.