Occurrence and Recovery of Rutile from Western Copper Mill Tailings.
Pres SME-AIME Fall Mtg & Exhibit Denver Colorado 1981 (18-20):7 pages
The federal Bureau of Mines examined tailings samples from 13 western copper operations to determine the potential for recovering rutile. Results showed that six of the samples contained sufficient liberated titania to be considered potential sources. One sample contained 0.75 percent ti02 or 0.40 percent liberated rutile. Batch flotation studies developed a procedure that recovered 70 percent of the liberated rutile at a grade of 34.7 percent ti02. Sulfuric acid leaching studies on 12 of the samples dissolved 100 to 2,200 grams cu per ton of tailings; leaching of the slimes showed slightly more copper was dissolved, 1,800 to 3,300 grams cu per ton of minus 10- micrometer material. Bulk sulfide flotation of nine of the samples resulted in concentrates that contained 0.38 to 2.0 percent cu and 0.7 to 2.1 and 6.9 to 42.9 Grams per ton au and ag, respectively.
Issue of Publication
Pres. SME-AIME Fall Mtg. & Exhibit, Denver, Colorado, No. 18-20, 1981, SME Preprint 81-333, 7 PP.