The application of Ai(OH)(3) seed in carbonization of sodium aluminate liquors
The application of Ai(OH)(3) seed in carbonization of sodium aluminate liquors
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发表时间：
2005
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通讯作者：
Z. Wang;S. Bi;Y. Yang;Z. Yuan
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作者：
Z. Wang;S. Bi;Y. Yang;Z. Yuan
在烧结工艺中，优选粒度分布窄且颗粒破碎率低的粗料。研究了在铝酸钠溶液中添加晶种对三水铝石粒度和磨耗指数的影响。通过分析在添加和不添加晶种的条件下获得的数据来解释所有结果。结果表明，晶种对产物平均粒径有影响，但这种影响与晶种类型和晶种比例有关。显微图象分析表明，晶种产物不是链状团聚体，而是多晶的镶嵌致密结构，使沉淀出来的三水铝石强度相对提高5-40%。由于种子在碳化过程中的显着作用，通过正交实验确定了适合提高产品粒度和强度的工艺参数。
A coarse material with narrow size distribution and low particle breakage is preferred in the Sinter Process. The particle size and attrition index of gibbsite particles has been investigated through adding seeds to sodium aluminate liquors. All results were explained by analyzing the data obtained at the conditions with and without adding seed. It is shown that the average size of product is influenced by that of seed, but this effect is related to seed type and seed ratio. The image analysis of the micrographs indicates that the seeded product is not chain like agglomerates, but polycrystalline with qmosaicq dense structure, as a result the precipitated gibbsite presents an increase in strength by 5-40% in the relative value. Due to seeds remarkable roles in the carbonization process, the process variables suitable for improving the product granularity and strength has been determined through the orthogonal experiment.