Abstract
The concentration of barite by gravity separation generates substantial quantities of fine-particle wastes, and it is estimated that ≈40% of the contained barite is lost to these waste streams. In this study, froth flotation was examined as a potential method for the recovery of fine-barite particles. The study included the use of kinetic equations to estimate the variables effecting flotation, batch-scale rougher flotation tests to study the flotation variables and an examination of alternatives for the cleaning of the rougher concentrate. Results indicated that a concentrate grade of 96.5% could be achieved with a recovery of 77.5%. Although barite flotation from industrial wastes is more difficult than direct barite flotation, the process has considerable economic potential.
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