Record Display for the EPA National Library Catalog
RECORD NUMBER: 2 OF 2| Main Title | Pyrite Depression by Reduction of Solution Oxidation Potential. | |||||||||||
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| CORP Author | Utah Univ., Salt Lake City. Dept. of Mineral Engineering. | |||||||||||
| Year Published | 1970 | |||||||||||
| Report Number | EPA-WQO-12010-DIM; 09078,; 12010-DIM-08/70 | |||||||||||
| Stock Number | PB-200 257 | |||||||||||
| Additional Subjects | ( Pyrite ; Depressing reagents) ; ( Frothing reagents ; Xanthates) ; ( Sulfide minerals ; Flotation) ; ( Depressing reagents ; Sodium sulfites) ; Flotation reagents ; Cyanides ; Toxicity ; Hazardous materials ; Lead sulfides ; Copper inorganic compounds ; Sulfides ; Formates ; Formic acid/O-O-(diethyl-ester)-dithio-bis(thio-) ; Copper sulfides | |||||||||||
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| Collation | 63p | |||||||||||
| Abstract | A study of pyrite depression by reducing agents with potassium ethylaxanthate as collector indicates that pyrite may be depressed effectively in the flotation of both lead and copper sulfide ores without the use of poisonous cyanide salts. More specifically, the use of sodium sulfite as the depressant may result in metallurgical, economical, environmental and safety advantages over the poison, cyanide. For example, in the case of the copper ore, the best results with cyanide as the depressant were a rougher concentrate recovery of 90.2% and a grade of 4.3% Cu. However, when sulfite was used as the depressant for the same recovery a grade of 7.3% Cu was obtained. (WRSIC abstract) |