| Synthesis of Cordierite Powder from Blast Furnace Slag |
Wu Xingrong*, Wang Huihui, Li Liaosha, Lü Huihong, Wu Zhaojin and Shen Xingmei
pages 197-200
DOI : 10.1080/0371750X.2013/851622 |
| Abstract |
| We report a new process of synthesizing cordierite powder from blast furnace (BF) slag developed by using sol-gel
route. The phase transformation of dried gel calcined under different temperatures was investigated by XRD and
FTIR. It was found that one complicated silicic acid-sulphuric solutions system containing cations of Al3+ and Mg2+
was formed as the precursor of the cordierite by acid treatment of the slag. Cordierite powders with -cordierite as
the main crystalline phase can be obtained when dried gel was calcined in the 1200o-1300oC temperature range.
A viable technology to recover the major constituents from BF slag was provided. |
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