float-and-sink analysis

float-and-sink analysis

[¦flōt ən ′siŋk ə‚nal·ə·səs]
(mining engineering)
Use of a series of heavy liquids diminishing (or increasing) in density by accurately controlled stages in order to divide a sample of crushed coal or other minerals or metals into fractions that are either equal-settling or equal-floating at each stage.