REACTION BEHAVIOR OF SULPHUR EXISTED IN DIASPORIC BAUXITE IN BAYER DIGESTION PROCESS

被引：0
|
作者：
Yin Zhonglin [1 ]
Wu Guobao [1 ]
Li Xinhua [1 ]
Lu Peiqian [1 ]
Liu Zhanwei [1 ]
机构：
[1] CHALCO, Zhengzhou Res Inst, Zhengzhou 450041, Henan, Peoples R China
来源：
LIGHT METALS 2009 | 2009年
关键词：
high-sulphur bauxite; Bayer digestion; reaction behavior; calcined bauxite;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The reaction behavior of sulphur in diasporic bauxite in Bayer digestion process is studied in this essay. The reaction extent of sulphur in diasporic bauxite is enhanced along with the increase of the lime dosage in Bayer digestion process. The majority of the sulphur in the bauxite is leached into digestion liquor in the form of S(2-) and the percentage of the sulphur which would be in the red mud was about 20-30%. Only a little sulphur can be removed when the bauxite is calcined at some conditions. The main form of the sulphur in digestion liquor is SO(4)(2-), and about 50 similar to 60% sulphur in the bauxite will come into the red mud, the Na(2)S concentration in the digested liquor is less than 0.05g/L after the bauxite is calcined.
引用
收藏
页码：69 / 73
页数：5
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