| 醚类添加剂B35对铝酸钠溶液晶种分角过程的影响 |
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| 引用本文： | 李小斌,阎丽,周秋生,彭志宏,刘桂华. 醚类添加剂B35对铝酸钠溶液晶种分角过程的影响[J]. 中国有色金属学报, 2011, 21(2) |
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| 作者姓名： | 李小斌 阎丽 周秋生 彭志宏 刘桂华 |
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| 作者单位： | 中南大学冶金科学与工程学院,长沙,410083 |
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| 基金项目： | 国家重点基础研究发展计划资助项目 |
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| 摘 要： | 研究醚类添加剂B35对铝酸钠溶液晶种分解过程的影响,采用红外光谱仪分析溶液的结构,采用微电泳仪测定Al(OH)3颗粒表面的Zeta电位.结果表明:加入适量醚类添加剂可强化分解过程,当添加剂B35用量为500mg/L时,相对空白样可提高分解率4%;醚类添加剂B35对分解过程的强化不是山铝酸钠溶液结构的改变引起的;添加剂B35可使Al(OH)3晶种表面Zeta电位明显升高,说明Al(OH)3对该表面活性剂发生特性吸附,导致铝酸钠溶液在Al(OH)3颗粒表面的润湿角减小,其固液界面张力降低,从而使分解过程得以强化;此外,醚类添加剂B35使产品Al(OH)3半均粒径增大10 μm左右,而粗颗粒在溶液中的平衡溶解度较小,分解过程推动力较大,也应是强化分解过程的原因之一.
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| 关 键 词： | 铝酸钠溶液 晶种分解 添加剂 润湿性 |
Effect of ethers additive B35 on seeded precipitation of sodium aluminate solution |
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| LI Xiao-bin,YAN Li,ZHOU Qiu-sheng,PENG Zhi-hong,LIU Gui-hua. Effect of ethers additive B35 on seeded precipitation of sodium aluminate solution[J]. The Chinese Journal of Nonferrous Metals, 2011, 21(2) |
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| Authors: | LI Xiao-bin YAN Li ZHOU Qiu-sheng PENG Zhi-hong LIU Gui-hua |
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| Affiliation: | LI Xiao-bin,YAN Li,ZHOU Qiu-sheng,PENG Zhi-hong,LIU Gui-hua(School of Metallurgical Science and Engineering,Central South University,Changsha 410083,China) |
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| Abstract: | The effect of ethers additive B35 on the seeded precipitation of sodium aluminate solution was investigated,the structure of the sodium aluminate solution was analyzed by FTIR,the zeta potential of the solid surface of Al(OH)3 particles was measured by micro-electrophoresis.The results show that proper dosage of ethers additive can improve the seeded precipitation process of sodium aluminate solution.The precipitation rate can be raised by 4% when the B35 dosage is 500 mg/L.The change of the solution struct... |
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| Keywords: | sodium aluminate solution seeded precipitation additive wettability |
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