采用外加表面活性剂类添加剂的方法来改善碳酸化分解产物的粒度和强度,并探讨了其作用机理.结果表明,适宜的添加剂及添加量能够明显减少产物中的细粒子含量,加强附聚过程的进行,改善产物Al(OH)3的强度.添加剂CF2在200 mL/L时,产物平均粒径提高12μm左右,小于45μm细粒子质量分数降低17%左右,磨损指数降低10%.结晶形貌分析表明,添加剂促进了晶粒的附聚和单晶间的交互生长,产物氢氧化铝形成近似球形的"镶嵌"式多晶体.
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