Reaction of Bauxite with Hydrochloric Acid Under Autoclave Conditions

被引：1
|
作者：
D. V. Valeev
Yu. A. Lainer
A. B. Mikhailova
I. V. Dorofievich
M. V. Zheleznyi
M. A. Gol’dberg
S. V. Kutsev
机构：
[1] Russian Academy of Sciences (IMET RAN),Baikov Institute of Metallurgy and Materials Science
[2] National University of Science and Technology MISiS,undefined
来源：
Metallurgist | 2016年 / 60卷
关键词：
bauxite; hydrochloric acid; autoclave decomposition; boehmite; kaolinite;
D O I：
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学科分类号：
摘要：
Studies are made of the use of hydrochloric acid for the autoclave decomposition of boehmite-kaolinite bauxites from the North Onezhky Deposit. The spatial location and structure of the bauxites are investigated, and the solid residue left after autoclave decomposition is examined by x-ray phase analysis and electron microscopy to study the mechanism of the bauxites’ dissolution. The data that is obtained confirms the presence of hard films of amorphous silica. These films prevent complete dissolution of the aluminum-bearing minerals: boehmite and kaolinite.
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页码：204 / 211
页数：7
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