Hydromagnesite was calcined into light-burned magnesia, and the effects of calcination conditions, such as the size fraction of the ore and calcination temperature, and holding time on the loss on ignition and MgO grade were investigated. The calcination mechanism of hydromagnesite ore was analyzed by characterizing the calcinate with respect to its chemical and physical properties. The results indicate that the most suitable particle size of the ore is −2 mm and calcination after grinding leads to the incomplete decomposition of the hydromagnesite ore. With an increase in calcination temperature and holding time, the loss on ignition of calcination and MgO grade of light-burned magnesia was higher until the calcination temperature is 900°C for 3 h, after which the hydromagnesite ore was completely decomposed. At 800°C, the gangue aragonite was completely decomposed. As the calcination temperature increased, the crystal form of periclase became perfect and the crystal grain size increased.

将菱镁矿煅烧成轻质氧化镁，并研究了煅烧条件对矿石尺寸分数和煅烧温度以及保温时间对灼烧损失和MgO品位的影响。通过表征煅烧产物的化学和物理特性，分析了菱镁矿矿石的煅烧机理。结果表明，最合适的矿石粒度为-2 mm，并且研磨后的煅烧导致水菱镁矿矿石的不完全分解。随着煅烧温度和保温时间的增加，轻烧氧化镁的煅烧灼烧损失和MgO品级更高，直到煅烧温度达到900°C 3 h，此后菱镁矿才被完全分解。在800°C下 石文石被完全分解。随着煅烧温度的升高，过氧化物酶的晶形变得完美，晶体晶粒尺寸增大。