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以白云鄂博巴润矿为原料,在1 323~1 573 K下,通过热重质谱联用技术研究巴润矿的配碳还原过程以及还原动力学,对比不同矿物在还原过程中以碳的气化反应为限制环节所得到的活化能。研究结果表明,白云鄂博巴润矿配碳还原过程分为三个阶段,同时对应三个温度区间。根据Arrhenius方程计算出的以碳气化反应和气相扩散为限制环节的活化能分别为96.8、76.5 k J/mol,在本研究条件下的配碳还原由碳的气化反应控制。对比Fruehan、Donskoi等研究学者所得到的结论,白云鄂博巴润矿在以碳的气化反应为限制环节时所计算的活化能偏低。
Using Bayan Obo-Bar run as raw material, the process of reducing carbon in Ba-ore mine and its reduction kinetics were studied by TG-MS at 1 323-1 573 K. Compared with different gases, The reaction is to limit the activation energy obtained. The results show that the Bayan Obo-Bar run with carbon reduction process is divided into three stages, at the same time correspond to three temperature intervals. The activation energies calculated by the Arrhenius equation for the carbonization reaction and gas diffusion are 96.8 and 76.5 kJ / mol, respectively. The carbon reduction under the conditions of this study is controlled by the gasification reaction of carbon. Comparing the conclusions drawn by researchers such as Fruehan and Donskoi, the calculated activation energy of the Bayan Obo-Bar Mine is limited when the carbon gasification reaction is the limiting part.