Mica Process Development.
SME AIME 1970 247:269-273
For the past several years, the Bureau of Mines has conducted laboratory and continuous process development work on the weathered mica pegmatites ores of Alabama, Georgia, and North Carolina to determine the feasibility of recovering commercial-grade mica concentrates by flotation. The research has resulted in the development of two processes for flotation of mica: (1) an acid- cationic method for recovery of coarse mica and (2) an alkaline- anionic-cationic method for recovery of fine mica. The research indicated that the two processes may be effectively utilized separately or in combination for flotation of mica from weathered pegmatite ores. This report summarizes the process development work, and demonstrates the feasibility of producing commercial-grade concentrates with a high recovery of the contained mica.
SME, AIME, V. 247, Sept. 1970, PP. 269-273