工程科学学报2018，Vol.40Issue(1)：51-58,8.DOI:10.13374/j.issn2095-9389.2018.01.007
铝酸钠溶液种分过程中草酸钠结晶析出的行为
Behavior of sodium oxalate in seeded precipitation process of sodium aluminate solution
范尚 1陈文汨 1梁高杰1
作者信息
- 1. 中南大学冶金与环境学院,长沙410083
- 折叠
摘要
Abstract
Sodium oxalate has negative effects on alumina produced by the Bayer process. The behavior of sodium oxalate in the seeded precipitation process of a sodium aluminate solution was investigated. The particle size and morphology of crystallization, as well as the crystal habit of sodium oxalate, and the interaction between sodium oxalate and gibbsite in synthetic or industrial sodium alumi-nate solutions were also investigated. The results show that sodium oxalate precipitates on the surface or gibbsite clearance, such that the secondary nucleation of gibbsite increases, and the agglomeration of gibbsite is seriously hindered. This is considered as the main cause of gibbsite refinement.关键词
铝酸钠溶液/晶种分解/草酸钠/粒度Key words
sodium aluminate solution/seeded precipitation/sodium oxalate/granularity分类
矿业与冶金引用本文复制引用
范尚,陈文汨,梁高杰..铝酸钠溶液种分过程中草酸钠结晶析出的行为[J].工程科学学报,2018,40(1):51-58,8.
