Kinetic features of breunnerite decarbonization
- 作者: Vusikhis A.1, Gulyaeva R.1, Leont’ev L.1, Ovchinnikova L.1, Selivanov E.1
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隶属关系:
- Institute of Metallurgy, Ural Branch
- 期: 卷 2016, 编号 9 (2016)
- 页面: 793-797
- 栏目: Article
- URL: https://journals.rcsi.science/0036-0295/article/view/170833
- DOI: https://doi.org/10.1134/S0036029516090172
- ID: 170833
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详细
The decarbonization of breunnerite from talc waste is analyzed by thermogravimetry. The temperatures of thermal effects are determined, and kinetic models for the process are proposed to describe the mechanism of breunnerite decomposition. The unit cell parameters of breunnerite (MgxFe1–x)CO3 and the product of its decomposition, iron–magnesium oxide (Mg,Fe)O, are calculated. The apparent activation energies Ea of the decomposition are calculated using the Ozawa–Flynn–Wall and Kissenger model-free methods and the Avrami–Erofeev one-step model. Depending on the chosen model, the values of Ea range within 180–185 kJ/mol. The conditions of breunnerite roasting for the subsequent use of the obtained material in metallurgical processes are substantiated.
作者简介
A. Vusikhis
Institute of Metallurgy, Ural Branch
编辑信件的主要联系方式.
Email: pcmlab@mail.ru
俄罗斯联邦, ul. Amundsena 101, Yekaterinburg, 620016
R. Gulyaeva
Institute of Metallurgy, Ural Branch
Email: pcmlab@mail.ru
俄罗斯联邦, ul. Amundsena 101, Yekaterinburg, 620016
L. Leont’ev
Institute of Metallurgy, Ural Branch
Email: pcmlab@mail.ru
俄罗斯联邦, ul. Amundsena 101, Yekaterinburg, 620016
L. Ovchinnikova
Institute of Metallurgy, Ural Branch
Email: pcmlab@mail.ru
俄罗斯联邦, ul. Amundsena 101, Yekaterinburg, 620016
E. Selivanov
Institute of Metallurgy, Ural Branch
Email: pcmlab@mail.ru
俄罗斯联邦, ul. Amundsena 101, Yekaterinburg, 620016