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Initial-Stage Sulfuric Acid Leaching Kinetics of Chalcopyrite Using Radiochemical Techniques.

PB228628

Publication Date	1974
Personal Author	Baur, J. P.; Gibbs, H. L.; Wadsworth, M. E.
Page Count	44
Abstract	The sensitivity of radiochemical techniques makes possible the study of the initial-stage sulfuric acid leaching kinetics of chalcopyrite and other copper sulfide minerals. This Bureau of Mines study of the initial leaching of chalcopyrite used techniques to evaluate the molecular and electrochemical processes. High-grade Transvaal chalcopyrite was neutron-irradiated in a TRIGA reactor to produce radioisotopes copper-64, iron-59, and sulfur-35. Dissolution rates were measured in the time interval zero to 60 minutes, during which time significant anomalies were observed. The effects of solution variables such as pH, oxygen partial pressure, and ferric ion concentration at different temperatures were measured. (Modified author abstract) (Modified author abstract)
Keywords	Copper ores Leaching Sulfuric acid Chalcopyrite Reaction kinetics Neutron irradiation Copper isotopes Iron isotopes Sulfur isotopes pH Oxygen Temperature Isotopic labeling Tracer studies
Source Agency	Invalid Source Agency Code
NTIS Subject Category	71N - Nonferrous Metals & Alloys
Corporate Authors	BUREAU OF Mines, Washington, D.C.
Supplemental Notes	Prepared in cooperation with Bureau of Mines, Salt Lake City, Utah.
Document Type	Technical Report
Title Note	Report of Investigations.
NTIS Issue Number	197409

Initial-Stage Sulfuric Acid Leaching Kinetics of Chalcopyrite Using Radiochemical Techniques.

Initial-Stage Sulfuric Acid Leaching Kinetics of Chalcopyrite Using Radiochemical Techniques.
PB228628

Publication Date	1974
Personal Author	Baur, J. P.; Gibbs, H. L.; Wadsworth, M. E.
Page Count	44
Abstract	The sensitivity of radiochemical techniques makes possible the study of the initial-stage sulfuric acid leaching kinetics of chalcopyrite and other copper sulfide minerals. This Bureau of Mines study of the initial leaching of chalcopyrite used techniques to evaluate the molecular and electrochemical processes. High-grade Transvaal chalcopyrite was neutron-irradiated in a TRIGA reactor to produce radioisotopes copper-64, iron-59, and sulfur-35. Dissolution rates were measured in the time interval zero to 60 minutes, during which time significant anomalies were observed. The effects of solution variables such as pH, oxygen partial pressure, and ferric ion concentration at different temperatures were measured. (Modified author abstract) (Modified author abstract)
Keywords	Copper ores Leaching Sulfuric acid Chalcopyrite Reaction kinetics Neutron irradiation Copper isotopes Iron isotopes Sulfur isotopes pH Oxygen Temperature Isotopic labeling Tracer studies
Source Agency	Invalid Source Agency Code
NTIS Subject Category	71N - Nonferrous Metals & Alloys
Corporate Authors	BUREAU OF Mines, Washington, D.C.
Supplemental Notes	Prepared in cooperation with Bureau of Mines, Salt Lake City, Utah.
Document Type	Technical Report
Title Note	Report of Investigations.
NTIS Issue Number	197409