为实现尾矿整体资源化利用和水泥工业节能减排的目的,将某低活性高硅尾矿作为硅铝原料(基质)进行活化预处理,再分别与四种不同的铝校正料复合以调整硅铝比例,制备矿物聚合材料,并将它们的热稳定性与普通硅酸盐水泥砂浆试样进行比较.结果表明:在1000℃下煅烧以偏高岭土为铝校正料制备的矿物聚合材料试样,或在800℃下煅烧以铝酸盐水泥为铝校正料制备的矿物聚合材料试样,在宏观上造成它们的抗压强度较未煅烧试样的抗压强度更高;在微观上通过TG-DSC、SEM和FTIR分析共同说明这两种煅烧后的矿物聚合材料试样的结构更加致密,且其中对强度起主要支撑作用的“-SiO4-AlO4-”三维网络结构未受到严重破坏,这造成它们的热稳定性优于普通硅酸盐水泥砂浆试样.本研究证实以所选取的尾矿为硅铝原料(基质)制备热稳定性优良的矿物聚合材料产品具备可行性.
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