FIELD: process engineering.
SUBSTANCE: invention relates to dressing of minerals and may be used for increasing dressing efficiency. Proposed method comprises grinding initial material, conditioning it with oxygen-bearing gas to extract foamed product from pulp. Said conditioning is performed in ejector of column flotator. Note here that gas flow rate is defined by the following expression: Vgas =k·Qore ·βpyrrhotite/100, where: Vair is optimum gas flow feed to column flotator ejector, m3/h; k is empirically determined coefficient for determination of said coefficient varying from 4.0 to 7.0; Qore is amount of incoming ore, t/h; βpyrrhotite is content of pyrrhotite in ore, %.
EFFECT: higher efficiency.
5 tbl, 1 dwg
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Authors
Dates
2013-02-20—Published
2011-08-16—Filed