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高纯度铝酸三钙的制备 被引量:8

A Preparation Method of High-Purity C_3A
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摘要 以碳酸钙、氢氧化钙和氧化铝为原材料,选用不同煅烧温度、保温时间及煅烧次数,确定制备高纯度铝酸三钙(C3A)的方法。经X射线衍射(XRD)和扫描电镜(SEM)分析,结果表明:最佳制备方法为以氢氧化钙为钙质原料、氧化铝为铝质原料,煅烧温度为1 320℃,保温时间为3 h,经3次煅烧研磨得w(f-CaO)为0.45%的高纯度C3A;水化10 min的C3A具有较高的水化活性。 Using calcium carbonate, calcium hydroxide and alumina as raw materials and choosing different sintering temperature, soaking time and burning times, we confirm the preparation method of high purity Ca A. X-ray diffraction (XRD) and scanning electron microscope (SEM) analyses show that high purity C3 A is synthesized with calcium hydroxide as calcium material, alumina as aluminum material and by sintering at 1 320℃ ,holding for 3 h,grinding and sintering for 3 times. And the f-CaO content in CaA is 0.45%. The C3A hydrated for l0 min has high hydration activity.
出处 《济南大学学报(自然科学版)》 CAS 北大核心 2012年第3期221-224,共4页 Journal of University of Jinan(Science and Technology)
基金 国家自然科学基金(51178363) 国家重点基础研究发展计划(973)(2009CB623201)
关键词 C3A 制备 合成条件 水化反应 C3 A preparation synthesis condition hydration activity
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