FIELD: process engineering.
SUBSTANCE: invention relates to ore processing and may be used at mining plants for concentration of minerals. Proposed method comprises crushing ore samples, sizing crushed samples, fractionation of grain-size categories to content of valuable component. After fractionation, slime fractions of valuable mineral is integrated with slime fraction of country rock to define optimum parameters of crushing from extremum dependence of contrast ratio on duration of grinding. Marginal diameter of slime fraction grains of both valuable minerals and country rock makes 5 to 20 mcm depending upon used concentration method.
EFFECT: higher quality of concentrates and yield of valuable minerals.
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