Upon completion of preliminary studies, a continuous pilot plant to treat about 300 pounds of ore per hour was assembled. The flowsheet included concurrent grinding, screening, classification, conditioning, and flotation. The pilot plant was designed so that with a minimum alteration of piping and equipment the circuit could be changed to accommodate either the acid cationic flotation procedure, the alkaline anionic-cationic procedure, or combinations of the two procedures. The initial pilot plant operations were devoted to shakedown runs, during which various equipment units and flowsheets were tested and the several unit operations were integrated. Flowsheets of the circuits are shown in the following sections of this report. The continuous test work was conducted on run-of-mine ore obtained from the various mining companies. The method selected for continuous operation was based on the best results obtained in laboratory batch flotation tests.

Mineral Processing:

1. Various methods like gravity separation, froth flotation, and magnetic separation are used to separate mica from other minerals and impurities.

Flotation:

2. Flotation uses chemicals to selectively separate mica from other minerals based on their buoyancy.

Shape Extraction:

3. Mica shape extraction utilizes different sieve sizes to separate flake mica from gangue minerals.

Grinding and Grading:

4. Mica may be ground further and graded to specific sizes for different applications.

Mica Sheet Formation (if applicable):

1. Forming the Sheet: For mica sheets, the mica mixture is often poured onto a mesh mold and allowed to dry.
2. Vacuum Forming: A vacuum can be applied to extract liquid and form a sheet.
3. Coating (if applicable): Sheets can be coated with a resin solution.

Final Products:

• Mica sheets are used as insulation, coatings, and in various industrial applications.
• Mica powder is used in coatings, paints, and other applications.