Crystallization of monosodium aluminate hydrate from a concentrated aluminate solution containing silica
作者： Shaowei You , Yifei Zhang , Shaotao Cao , Fangfang Chen , Yi Zhang
DOI: 10.1016/J.HYDROMET.2012.01.001
关键词:
摘要: The influence of silica content in concentrated aluminate solution on the crystallization monosodium hydrate (MAN) has been investigated systematically. resultant crystals were found to be round flakes, with a high concentration significantly inhibiting crystallization. conversion ratio and average particle size MAN decreased increasing SiO2 solution. silicate impurity phases which crystallized simultaneously identified as NaAlSiO4 Na2SiO3 from low Ca3Al2Si3O12, Ca3Al2(SiO4)(2)(OH)(4), Na4Ca4(Si6O18) we obtained when there was concentration. These have much higher than more common desilication product Ca3Al2(SiO4)(n)(OH)(12-4n) Bayer process for alumina production where n is usually below 0.8. (C) 2012 Elsevier B.V. All rights reserved.
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