Carbonated Magnesium Slag

~90% carbonation

Microwave-treated magnesium slag achieves a CO₂ fixation of 459.4 kg/t, offering an efficient mineral carbonation route for construction.

Jingang, Han · Duan, Siyu · Zhou, Xinxing · Lu, Guangjun · Fang, Li · Ma, Zhibin · Guo, Yanxia

Construction and Building Materials 2025

Specifications

Optimal carbonation efficiency

{'zh': '约89.8', 'en': '89.8'} %

固定量

{'zh': '459.4', 'en': ''} kg/t

Activation energy

{'zh': '约34.36', 'en': '34.36'} kJ/mol

Advantages

Needle-like aragonite at 140°C under pressure; block-like calcite dominates above 160°C