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Chemical Reactions in the Roasting of Copper Sulfides.

PB196613

Publication Date	1970
Personal Author	Shah, I. D.; Kahlafalla, S. E.
Page Count	25
Abstract	An investigation was made of the sequence of principal chemical reactions taking place during the roasting of covellite (CuS). Practically all covellite is converted to digenite (Cu1.8S) before oxidation to Cu2O begins. Part of the Cu2O is then converted to CuO, which in turn forms CuSO4 through CuO. CuSO4 as an intermediary. CuSO4 Cuto.cuSO4 decompose at 600 to 700C to yield CuO and SO3 (g) as final products. An overall mechanism is proposed for chemical reactions occurring at different interfaces of partially oxidized CuS pellets. (Author)
Keywords	Copper ores Roasting Copper inorganic compounds Oxidation Sulfides Copper oxides Chemical reactions Reaction kinetics Phase diagrams Differential thermal analysis Thermogravimetry Copper sulfate Sulfur trioxide Copper sulfides Covellite Chemical reaction mechanisms
Source Agency	Invalid Source Agency Code
NTIS Subject Category	99D - Basic & Synthetic Chemistry 48A - Mineral Industries
Corporate Authors	BUREAU OF Mines, Washington, D.C.
Document Type	Technical Report
Title Note	Rept. of investigations.
NTIS Issue Number	197105

Chemical Reactions in the Roasting of Copper Sulfides.

Chemical Reactions in the Roasting of Copper Sulfides.
PB196613

Publication Date	1970
Personal Author	Shah, I. D.; Kahlafalla, S. E.
Page Count	25
Abstract	An investigation was made of the sequence of principal chemical reactions taking place during the roasting of covellite (CuS). Practically all covellite is converted to digenite (Cu1.8S) before oxidation to Cu2O begins. Part of the Cu2O is then converted to CuO, which in turn forms CuSO4 through CuO. CuSO4 as an intermediary. CuSO4 Cuto.cuSO4 decompose at 600 to 700C to yield CuO and SO3 (g) as final products. An overall mechanism is proposed for chemical reactions occurring at different interfaces of partially oxidized CuS pellets. (Author)
Keywords	Copper ores Roasting Copper inorganic compounds Oxidation Sulfides Copper oxides Chemical reactions Reaction kinetics Phase diagrams Differential thermal analysis Thermogravimetry Copper sulfate Sulfur trioxide Copper sulfides Covellite Chemical reaction mechanisms
Source Agency	Invalid Source Agency Code
NTIS Subject Category	99D - Basic & Synthetic Chemistry 48A - Mineral Industries
Corporate Authors	BUREAU OF Mines, Washington, D.C.
Document Type	Technical Report
Title Note	Rept. of investigations.
NTIS Issue Number	197105