Mica Beneficiation
13/01/2022 · The principal equipment in a spiral plant consists of grinding, classification, screening, spirals, and storage facilities. Figure 7 is a flowsheet of a Humphreys spiral plant for recovering flake mica. In a typical Humphreys spiral plant, the run-of-mine ore is washed by a high-pressure hose into a bowl-rake classifier for an initial desliming