中文摘要：

借助于 Malvern 激光粒子尺寸分析器和扫描电子显微镜学，在 Bayer 的凝块上的种子尺寸和数字的影响处理我们 reinvestigated。凝块几乎在 8 h 被完成，在 5 μ m 下面，特别在 2 μ m 下面，种子很快一起聚在一起并且几乎消失在 8 h。在铝酸盐答案和种子尺寸的一样的过度饱和，种子的数字越小，凝块的度是越多 bigger。与种子的一样的主要数字，更大的种子的凝块比小种子的优异，并且凝块不发生在粗糙的种子之中。凝块主要在好粒子之中发生，并且在好粒子之中的联合是 unconsolidated。

英文摘要：

By means of Malvern laser particle size analyzer and scanning electron microscopy, the influences of seed size and number on agglomeration in Bayer process were investigated. Agglomeration is almost finished in 8 h, seeds, below 5 μm, especially below 2 μm, gather together rapidly and almost disappear in 8 h. In the same supersaturation of aluminate solution and seed size, the smaller the number of seed is, the bigger the degree of agglomeration is. With the same primary number of seed, the agglomeration of larger seed is superior to that of small seed, and the agglomeration does not happen among the coarse seeds. The agglomeration mainly happens among fine particles, and the combinations among the fine particles are unconsolidated.