水热合成法制备镁铝尖晶石工艺条件研究

Study on the condition for preparation of magnesia-alumina spinel by hydrothermal method

通过水热合成法制备镁铝尖晶石前驱物,在焙烧条件下进行了试验研究,制备理想的超细镁铝尖晶石。研究结果表明,获得理想镁铝尖晶石的条件为:以尿素作结构调变助剂、NH4F作矿化剂,合成温度180℃、焙烧温度550℃。

The precursor for Al-Mg spinel was prepared by hydrothermal method and calcined to synthe- size superfine Al-Mg spinel. The optimal preparation condition was as follows： urea as the structure modifier, NH4F as the mineralization reagent, synthesis temperature 180℃, calcination temperature 550℃.