Open AccessThe study on desiliconization mechanism of sodium aluminate solution prepared from aluminum ash
Author(s) -
Yiru Wang,
Qiupin Zhao,
Xiaolong Li,
Pengkuo Zhi,
Dan Zhao
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/358/3/032046
Subject(s) - sodium aluminate , aluminate , sodium oxide , aluminum oxide , sodium , calcium oxide , sintering , oxide , materials science , inorganic chemistry , sodium silicate , impurity , decomposition , aluminium , calcium , chemistry , chemical engineering , metallurgy , cement , organic chemistry , engineering
The sodium aluminate crude solution prepared by using aluminum ash often contains a certain amount of sodium silicate impurities, and needs refined desiliconization. In this paper, desilication treatment of sodium aluminate solution by adding calcium oxide during sintering and refining. Experimental results show that the amount of calcium oxide added, desiliconization time and desiliconization temperature have an important influence on desiliconization efficiency of sodium aluminate solution. The results show that the desiliconization efficiency can reach 95.80 % under the optimal conditions, which satisfies the crystal decomposition of sodium aluminate solution.