Relationship between surface roughness of minerals and their flotation kinetics

Rezai, B and Rahimi, M and Aslani, M R and Eslamian, Atiye and Dehghani, F (2010) Relationship between surface roughness of minerals and their flotation kinetics. In: Proceedings of the XI International Seminar on Mineral Processing Technology (MPT-2010), Dec 2010, NML Jamshedpur, India.

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Surface roughness is due to fluctuations around a surface solid which plays vital role in subsequent processes. Grinding by different mills causes main changes in surface roughness of particles, which these changes are very important for their flotation. In this study, surface roughness of quartz particles is determined with measuring of specific surface area of particles. The wettability characteristics of particles with different surface roughness were determined by measuring of flotation rate using the laboratory flotation cell. Results have shown that flotation rate of particles increases with increasing in surface roughness of particles, but this relationship is non linear. Finally, an empirical relationship between surface roughness (λ) and flotation kinetics constant (k) of particles such as k = a + bλ0.5 (ln(λ)) + cλ0.5 + dln(λ)/(λ2), has been determined, that a, b, c and d are constants related to experimental conditions and mineralogical properties of mineral.

Item Type:Conference or Workshop Item (Paper)
Official URL/DOI:
Uncontrolled Keywords:Flotation rate, Flotation kinetics, Surface roughness
Divisions:Mineral Processing
ID Code:2362
Deposited By:Dr. A K Sahu
Deposited On:13 Jan 2011 11:14
Last Modified:19 Aug 2015 14:55
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