摘要：为研制超细氢氧化铝微粉生产所需的活性晶种,提出一种碳化分解制备氢氧化铝微粉晶种的方法,对制备过程中的Al₂O₃的浓度、反应温度、CO₂通气速度等因素进行研究,并进行工业扩大试验。结果表明:用碳化分解法得到的活性晶种粒度分布均匀且稳定;以碳化法制种分解得到的微粉产品指标能够达到或超过现有机械磨、中和法制种得到的微粉产品指标。

关键词： 超细氢氧化铝;碳化法;晶种

Abstract： In order to prepare the active seed crystals for superfine aluminum hydroxide powders， a new way of preparing seed crystals by carbonization process was successfully developed， and the main effective factors of Al₂O₃ concentration， reaction temperature and CO₂ flow were studied. The industrial test was done. The results showed that the active seed crystals prepared by carbonization process had stable and uniform particle size distribution. The product′ s indexes of superfine powder decomposed from the seed crystals by carbonization process achieved or surpassed those prepared by other existing methods.

Keywords：superfine aluminum hydroxide powder； carbonization； seed crystals