Patent
Method and system of activation of mineral silicate minerals
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TLDR
A method for activation of magnesium silicate minerals by conversion to magnesium hydroxide for sequestration of carbon dioxide (CO 2 ) is provided in this article, where the method includes heating a dry solid-solid mixture of an alkaline earth Silicate-based material with an alkali metal compound at a temperature below 300 C to form a solid product predominantly comprising a mixture of magnesium hydoxide and metal silicate.Abstract:
A method for activation of magnesium silicate minerals by conversion to magnesium hydroxide for sequestration of carbon dioxide (CO 2 ) is provided. The method includes heating a dry solid-solid mixture of an alkaline earth Silicate-based material with an alkali metal compound at a temperature below 300 C to form a solid product predominantly comprising a mixture of magnesium hydroxide and alkali metal silicate, wherein the Silicate-based material comprises a naturally occurring Olivine, Serpentine mineral and alkali metal silicate. The method includes a subsequent dissolution of the solid product in aqueous solution to form an alkaline aqueous liquid slurry, comprising solid and aqueous phase products and the reaction of the solid phase thus formed with Carbon Dioxide (CO 2 ), producing a metal Carbonate. The method provides a process that has shown significant cost and energy efficiencies for producing magnesium hydroxide and CO 2 sequestration via mineral carbonation.read more
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References
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Patent
Carbonation of metal silicates for long-term CO2 sequestration
TL;DR: In this article, the authors describe a process of sequestering carbon dioxide in a metal silicate with a caustic alkali-metal hydroxide to produce a carbonate of the metal formerly contained in the silicate.
Patent
A process for sequestration of carbon dioxide by mineral carbonation
TL;DR: In this article, a process for carbon dioxide sequestration by mineral carbonation is described, which involves converting a magnesium or calcium sheet silicate hydroxide into a carbonate or chain silicate by bringing the hydroxides in direct or indirect heat exchange contact with hot synthesis gas.
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Quick-setting concrete and a method for making quick-setting concrete
TL;DR: In this paper, a method for producing quick setting concrete is provided comprising hydrng a concrete dry mixture with carbonate solution to create a slurry, and allowing the slurry to cure.
Patent
A process for preparing an activated mineral
TL;DR: In this paper, a process for the activation of a magnesium or calcium sheet silicate hydroxide mineral comprising: (a) preheating the preheated silicates hydroxides mineral particles at elevated temperature to obtain at least hot activated mineral particles; and (b) cooling the hot activated miner particles, wherein energy released during cooling in step (c) is used for preheasting the magnesium or calc sheet silicated hydroxile mineral particles in step(a) by heatintegration.
Journal ArticleDOI
Carbon Storage by Mineralisation (CSM): Serpentinite Rock Carbonation via Mg(OH)2 Reaction Intermediate Without CO2 Pre-separation
TL;DR: The Abo Academi route of producing Mg(OH) 2 from serpentinite rock followed by gas-solid carbonation in a pressurised fluidized bed (PFB) has been further developed and optimized towards industrial demonstration as mentioned in this paper.