Determination of the nucleation and growth rates in MgCO3 system from crystal size distribution

被引：5
|
作者：
Devasahayam, S. [1 ]
Khangaonkar, P. [2 ]
机构：
[1] Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia
[2] Coll Engn, Dept Met & Mat, Pune, Maharashtra, India
来源：
TRANSACTIONS OF THE INSTITUTIONS OF MINING AND METALLURGY SECTION C-MINERAL PROCESSING AND EXTRACTIVE METALLURGY | 2007年 / 116卷 / 03期
关键词：
MgCO3; Crystal size distribution analysisSuper saturation; Crystal growth rate;
D O I：
10.1179/174328507X198609
中图分类号：
TD [矿业工程];
学科分类号：
0819 ;
摘要：
Crystal size distribution analysis of magnesium carbonate for a batch operation is presented. Log normal distribution is assumed in calculating the mean size of the crystals. Change of slope in the particle size distribution v. particle size plot suggests a crystal growth rate independent of crystal size. The order of nucleation process (m) being >4, as correlated by power law kinetics is indicative of nucleation by primary mechanisms. High supersaturation levels are attributed to theses phenomena. Relatively high saturation rates lead to a widening of the metastable region.
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页码：171 / 176
页数：6
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