对某低活性高硅型尾矿进行活化,以使其适合作为矿物聚合反应的硅铝原料使用.通过碱溶浸出试验、SEM和XRD表征手段系统研究湿法加碱煅烧、干法加碱煅烧以及干式机械球磨的方式对尾矿活化的效果,并探索适合于该尾矿的活化方式,揭示相关活化机理;以最合适技术参数下活化的尾矿与四种不同铝校正料复合制备矿物聚合材料试样,分析试样抗压强度与复合硅铝原料在强碱溶液中(Si+ Al)浸出浓度的关系.结果表明,经过三种不同方式活化之后,尾矿活性均有一定程度的提高,其中以湿法加碱煅烧方式对该尾矿活化的效果最好,且采用该方式最适合的技术参数为:煅烧温度为450℃,尾矿/NaOH(质量比)为5/1,煅烧时间为lh;矿物聚合材料的抗压强度与复合硅铝原料的(Si+ Al)浸出浓度具有良好的线性相关性,从而验证通过碱溶浸出试验定量判断硅铝原料在矿物聚合反应中的活性具有很好的可靠性.
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