The oxidative degradation kinetics of chalcopyrite have been studied by thermogravimetric analysis (TGA). The obtained data are necessary for the kinetic description of the flash fusion process, which can contribute to the optimization of the smelting process in copper extractive metallurgy. Activation energy (Ea) evolutions of the involved processes have been determined by several isoconversional methods; in this sense, the chalcopyrite oxidation processes could be adequately described, among studied models (E1641–16, Ozawa–Flynn–Wall, Kissinger–Akahira–Sunose and Friedman), by the Kissinger–Akahira–Sunose kinetic model. Using this method, Ea and A values are found to be very dependent on the conversion. Under lower conversion levels, higher Ea and A values have been calculated with respect to that found for medium and higher conversion levels.

中文翻译：

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氧化环境下黄铜矿热降解动力学演化

已通过热重分析 (TGA) 研究了黄铜矿的氧化降解动力学。获得的数据对于快速熔融过程的动力学描述是必要的，这有助于优化铜提取冶金中的冶炼过程。相关过程的活化能 (Ea) 演化已通过多种等转化方法确定；从这个意义上说，在研究模型（E1641-16、Ozawa-Flynn-Wall、Kissinger-Akahira-Sunose 和 Friedman）中，可以通过 Kissinger-Akahira-Sunose 动力学模型充分描述黄铜矿氧化过程。使用此方法，发现 Ea 和 A 值非常依赖于转换。在较低的转化水平下，相对于中等和较高转化水平所发现的值，计算出较高的 Ea 和 A 值。