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[篇名]
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硅酸铝包覆硅灰石复合粉体的制备与表征
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[著者]
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刘桂花; 郑水林
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[机构]
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中国矿业大学（北京）化学与环境工程学院,北京 100083
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[中文关键词]
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硅灰石; 硅酸铝; 复合; 粉体
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[外文关键词]
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wollastonite
Al_2（SiO_3）_3 composite powder
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[分类号]
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[刊名]
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非金属矿
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[出版时间]
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2008年1月
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[来源]
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VOL31,NO.1._22—24
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[中文摘要]
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以硫酸铝和硅酸钠为包覆改性剂,采用化学沉淀法,在硅灰石表面包覆纳米级硅酸铝,在包覆量为5%、硅灰石悬浮液固液比为1∶15,硫酸铝浓度为0.15mol/L、硅酸钠浓度为0.45mol/L、滴加速度为1ml/min、温度为70~80℃、反应时间60min等最佳条件下,制备了硅酸铝/硅灰石复合粉体。结果表明,硅灰石表面均匀地包覆了一层纳米粒级的硅酸铝,白度提高了2.0%。
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[外文摘要]
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A Composite
powder of nano-sized aluminum silicate/wollastonite was made by Al2(SO4)3
and Na2SiO3 reacted and deposited on the surface of wollastonite.
Under best experimental conditions the namo-sized
aluminum silicate/wollastonite was made. The
amount of aluminum silcate is 5%, the S/L ratio
of wollastonite suspension is 1∶15, the concentration of aluminum sulfate and natrium
silicate is 0.15mol/L and 0.45mol/L respectively, the reaction rate and the
reaction temperature and the reaction time is 1ml/min and 70-80℃and
60min respectively.The results were showed that the
surface of the wollastonite was deposited by a nano-sized aluminum silicate film and the whiteness of
it increased by 2.0%.
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