Selective Flotation of Mica from Georgia Pegmatites
James S. Browning · Ralph B. Adair
Jan 1966 · U.S. Department of the Interior, Bureau of Mines
Ebook
9
Pages
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About this ebook
The Bureau of Mines conducted laboratory and small-scale continuous tests of weathered mica pegmatite ores from Hart County, Ga., to determine the technical feasibility of recovering commercial-grade mica concentrates by floatation. Two modifications of the Bureau-developed anionic-cationic method were used. In one method, sodium carbonate and calcium lignin sulfonate were used for Ph control and quartz depression; this method yielded mica concentrates containing 98.5 percent mica with a recovery of 91.4 percent. In the other modification, lime and sodium silicate were used with the calcium lignin sulfonate; concentrates containing 98.9 percent mica with a recovery of 86 percent were obtained.
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