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A probabilistic approach to
column flotation
Froth flotation has been employed as a successful means of concentration of
metalliferrous ores. Column flotation is a relatively new development. The
process involves selective attachment of particles of certain minerals out
of a slurry, descending a vertical column, to ascending air bubbles. There
are some particles which attach themselves to the ascending air bubbles from
the collection zone and go right up to the cleaning zone whereas others are
attached for a while and are, then, detached. For certain other particles,
the process of attachment and detachment is repeated. The probabilities of
change from the attachment to detachment state of a particle are determined
from the recoveries of the two zones. The paper explains the steady state
probabilities of a particle from the probabilities of change from one state
to another based on the principle of Markov process. |
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