| Behavior of calcium silicate in leaching process |
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| 作者姓名： | 刘桂华 李小斌 彭志宏 周秋生 |
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| 作者单位： | School of Metallurgical Science and Engineering，Central South University，Changsha 410083，China，School of Metallurgical Science and Engineering，Central South University，Changsha 410083，China，School of Metallurgical Science and Engineering，Central South University，Changsha 410083，China，School of Metallurgical Science and Engineering，Central South University，Changsha 410083，China |
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| 基金项目： | Project(G19990 6 4910)supportedbytheStateKeyFundamentalResearchProgramofChina，Project( 5 0 2 740 76)supportedbytheNa tionalNaturalScienceFoundationofChina |
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| 摘 要： | 1 ＩＮＴＲＯＤＵＣＴＩＯＮＩｎｇｅｎｅｒａｌ ,ａｌｕｍｉｎａｃａｎ ｔｂｅｐｒｏｄｕｃｅｄｅｃｏｎｏｍｉｃａｌｌｙｂｙＢａｙｅｒｐｒｏｃｅｓｓｉｎＣｈｉｎａｂｅｃａｕｓｅｔｈｅｂａｕｘｉｔｅｃｈａｒａｃｔｅｒ ｉｚｅｓｉｎｄｉａｓｐｏｒｅａｎｄａｂｏｕｔ 80 %ｂａｕｘｉｔｅｅｘｉｓｔｉｎｌｏｗｄｅ ｇｒｅｅｏｆｔｈｅｍａｓｓｒａｔｉｏｏｆａｌｕｍｉｎａｔｏｓｉｌｉｃａ(Ａ/Ｓ)ｗｈｉｃｈｖａｒｉｅｓｆｒｏｍ 4ｔｏ 91] .Ａｎｄａｂｏｕｔ 4 0 %ｏｆａｌｕｍｉｎａｉｓｐｒｏ ｄｕｃｅｄｂｙｓｉｎｔｅｒｉｎｇ…
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| 关 键 词： | sinter leaching β -2CaO·SiO 2 CaO·SiO 2 |
Behavior of calcium silicate in leaching process |
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| LIU Gui-hua,LI Xiao-bin,PENG Zhi-hong,ZHOU Qiu-sheng.Behavior of calcium silicate in leaching process[J].Transactions of Nonferrous Metals Society of China,2003,13(1). |
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| Authors: | LIU Gui-hua LI Xiao-bin PENG Zhi-hong ZHOU Qiu-sheng |
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| Abstract: | Based on the thermodynamic calculation, the mole ratio of CaO to SiO2, temperature and A/S of bauxitehave a profound influence on the mole ratio of 2CaO @ SiO2 to CaO @ SiO2 in sinter. CaO @ SiO2 and β-2CaO @ SiO2appear stable in caustic solution but unstable in soda solution, and CaO @ SiO2 is more stable than β-2CaO @ SiO2 un-der the same leaching condition. Compared with the conventional sinter, the rate of alumina extraction of the newsinter is large and the secondary reaction is restricted in the leaching, which might be mainly due to the more contentof CaO @ SiO2 in sinter and better stability of CaO @ SiO2 in leaching. |
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| Keywords: | sinter leaching CaO@ SiO2 |
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