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Beneficiation of Georgia Kyanite Ore.
NTIS: PB 191 002 :8 pages
The Bureau of Mines conducted laboratory and small-scale continuous tests of kyanite ore from Georgia to determine the technical feasibility of recovering commercial-grade kyanite concentrates by flotation. The research indicated that combinations of sulfuric acid and petroleum sulfonate may be used effectively for flotation of kyanite from quartzite-kyanite ore. Over 87 percent of the kyanite was recovered in a concentrate analyzing 55.8 percent al2o3 and 5.3 percent acid-soluble fe2o3. Subsequent treatment of the flotation concentrate by high-intensity wet magnetic separation reduced the acid-soluble fe2o3 to 0.8 percent and increased the alumina content to 57.6 percent, with a recovery of 82.7 percent of the total alumina in the ore.
IH; Report of Investigation;
NTIS Accession No.
NTIS: PB 191 002
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division