Achieving the Carbon-Neutral Production of Magnesia and Silica Products Using a HCl-Based Process in Serpentine Feedstock

Magnesia is mainly produced from carbonate sources (magnesite (MgCO3)), and seawater brines (MgCl2). The calcination of magnesite the precipitation brine using quicklime (CaO) are processes that have significant CO2 footprints, even before considering burning hydrocarbons required to meet energy demand. There also amounts silica-based magnesia raw materials available worldwide, such as serpentine, dunite, olivine. It possible produce synthetic MgO high purity a HCl-based process. HCl can be fully recycled reused. If carbon-neutral heating source electricity, fuel, or plasma used for pyrohydrolysis process, result production via