Potential for recovery of rutile and other byproducts from western copper tailings.
Davis-EG; Sullivan-GV; Lamont-WE
Tuscaloosa, AL: U.S. Department of the Interior, Bureau of Mines, RI 9158, 1988 Jan; :1-19
The Bureau of Mines studies tailings samples from 11 large-scale western copper operations to determine the potential for recovery of rutile and other critical and strategic minerals. Up to 15 pounds per short ton (lb/st) ti02 was found in these samples; however, only 9 to 44 pct of the tio2 was liberated rutile. For one sample, gravity preconcentration, grinding, and flotation recovered 34 pct of the tio2 in a 54.8-Pct-tio2 concentrate. Over 0.38 Lb/st w was found in some of the tailings samples. Scheelite was identified as the major w mineral. Nine of the eleven samples contained about 0.02 to 0.18 Lb/st carbon monoxide Pyrite was the principal co-bearing sulfide mineral, with CO contained in about one-fifth of the pyrite grains. Up to 30 pct of the CO was concentrated in a bulk sulfide flotation concentrate.
Extraction; Metalliferous-minerals; Nonmetalliferous-minerals; Copper; Waste-disposal; Tailings; Pyrite; Flotation; Physical-metallurgy; Beneficiation; Separation; Rutile
IH; Report of Investigations
NTIS Accession No.
Tuscaloosa, AL: U.S. Department of the Interior, Bureau of Mines, RI 9158