A gray powder that is a mixture of calcium silicate and calcium aluminate made by heating limestone (calciumcarbonate) and clay (containing silicon. dioxide and aluminum oxide).
灰色粉末。是由石灰石(碳酸钙)和粘土(含二氧化硅和氧化铝)加热而成的，硅酸钙和铝酸钙混合物。
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A water soluble cationic aluminum zirconium coupling agent was synthesized, and the precipitated calciumcarbonate was modified with the cationic aluminum zirconium coupling agent.