Production of magnesium hydroxide from magnesium silicate for the purpose of CO<sub>2sub> mineralization - Part 2: Mg extraction modeling and application to different Mg silicate rocks
- 作者：Experience Nduagu<sup>asup> ; Thomas Bjö ; rklö ; f<sup>asup><sup> ; sup><sup>1sup> ; Johan Fagerlund<sup>asup> ; Ermei Mä ; kilä ; <sup>bsup> ; Jarno Salonen<sup>bsup> ; Hans Geerlings<sup>csup><sup> ; sup><sup>dsup> ; Ron Zevenhoven<sup>asup><sup> ; sup><sup>ron.zevenhoven@abo.fisup>
- 关键词：Mineral carbonation ; Mg-silicate ; Magnesium hydroxide ; Ammonium sulfate ; Magnesium extraction ; Precipitation
- 刊名：Minerals Engineering
- 出版年：2012
- 期刊代码：130_08926875
- 类别：et
- 出版时间：April, 2012
- 卷：30
- 期：Complete
- 页码：87-94
- 文件大小：1017 K
摘要
Mineral carbonation of Mg silicates via a gas/solid carbonation of magnesium hydroxide, Mg(OH)<sub>2sub> in a fluidized bed (FB) reactor process route is the most actively investigated route of carbon capture and storage by CO<sub>2sub> mineralization (CCS) research in Finland. This paper reports Mg extraction behavior and production of magnesium hydroxide, Mg(OH)<sub>2sub> from different Mg-silicate rocks from worldwide locations (Finland, Lithuania, Australia and Norway). Magnesium hydroxide, the reactive material for gas/solid mineralization of CO<sub>2sub> can be produced from different Mg-silicate minerals via a staged solid/solid reaction with ammonium sulfate (AS) salt followed by precipitation in aqueous ammonia solution. A comparison is made for five different minerals. The kinetics of Mg extraction from Mg-silicate minerals and the possible effects of iron by-products on reactivity and kinetics were studied and modeled as well.