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The Combustion of Chalcopyrite Particles Under Flash-smelting Conditions.
Proc of the Conf on Gas-solid Reactions in Pyromet Univ Mo- Rolla 1986 :17-38
Isothermal and nonisothermal studies have been carried out on the intrinsic rate of sulfur removal from chalcopyrite particles by oxidation. Below about 873 k, direct oxidation of the chalcopyrite particles is the dominant sulfur-removal step, whereas above this temperature sulfur vaporization predominates. The oxidation of chalcopyrite under flash-smelting conditions has been analyzed by combining the kinetics of single-particle oxidation with equations describing heat and mass transfer between the particle and its surroundings. The effect of various parameters, such as oxygen concentration particle size and gas and wall temperatures, on the heating to ignition, maximum particle temperatures, and time to complete reaction has been elucidated.
IH; Final Contract Report;
Proc. of the Conf. on Gas-solid Reactions in Pyromet; Univ. Mo- Rolla, 1986, PP. 17-38
Univ. of Utah