کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6529275 | 48222 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The role of the Silicate Groups in the Extraction of Mg with the Ã
A route method
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The principle of the Ã
A route method for mineral carbonation is to produce magnesite from Mg cations extracted from silicates, precipitate Mg as Mg(OH)2 and fuse it with CO2 to produce magnesite (MgCO3). Since Mg is situated in distinct parts of the crystal lattice in different silicate groups, it varies from group to group how easily Mg can be extracted. This study focuses on how the lattice structure of various silicate groups influences the mineral carbonation method the Ã
A route. Materials on focus include Mg-bearing silicates from neso-, cyclo- and phyllosilicates. The experiments are conducted with the Ã
A route, a mineral carbonation method developed at Ã
bo Akademi University. Based on this study, it can be reinforced that a high Mg content of the raw material does not guarantee success in Mg extraction. Phyllosilicates with high crystalline H2O provide the highest volumes of Mg. However, other features may diminish the importance of crystalline H2O. Structural complexity and the location of Mg in the lattice are important factors. Cyclosilicates are excluded from further studies based on unsuccessful results. Despite their low performance in this study, nesosilicates are not yet discarded. Based on the results gained in this study, it can be stated that the lattice characteristics of different silicate groups play a significant role when raw material is selected for mineral carbonation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of CO2 Utilization - Volume 16, December 2016, Pages 466-473
Journal: Journal of CO2 Utilization - Volume 16, December 2016, Pages 466-473
نویسندگان
Sonja Lavikko, Olav Eklund,