一种河道淤泥人造集料及其制备方法

本发明公开了一种河道淤泥人造集料及其制备方法。该人造集料具备以下特点:一是成分梯度上包含内核-壳层两个部分,内核成分组成按质量比计算分别为水泥10%~15%,河道淤泥55%~70%,石英尾矿9%~25%,粉煤灰6%~10%,外掺激发剂碳酸钠1%~3%,壳层成分为磨细钢渣粉;二是石英尾矿、粉煤灰和外掺剂按配比直接混合后球磨制备成干性激发剂,保证了激发活性;三是采用了可高度自动化的挤压成球法,成球效率高、成本低;四是采用免烧结的水热合成工艺养护人造集料,相比于传统粘土烧结集料该生产方式可节能80%。本发明利用河道淤泥中的石英以及粘土成分在温度180~200℃,饱和蒸汽压1.0~1.5 MPa的条件...

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Zusammenfassung:本发明公开了一种河道淤泥人造集料及其制备方法。该人造集料具备以下特点:一是成分梯度上包含内核-壳层两个部分,内核成分组成按质量比计算分别为水泥10%~15%,河道淤泥55%~70%,石英尾矿9%~25%,粉煤灰6%~10%,外掺激发剂碳酸钠1%~3%,壳层成分为磨细钢渣粉;二是石英尾矿、粉煤灰和外掺剂按配比直接混合后球磨制备成干性激发剂,保证了激发活性;三是采用了可高度自动化的挤压成球法,成球效率高、成本低;四是采用免烧结的水热合成工艺养护人造集料,相比于传统粘土烧结集料该生产方式可节能80%。本发明利用河道淤泥中的石英以及粘土成分在温度180~200℃,饱和蒸汽压1.0~1.5 MPa的条件下合成托贝莫来石(TOB)以及水石榴单击或点击此处输入文字。矿物,使陶集料兼具高强度和保温隔热的优点。 The invention discloses a river sludge artificial aggregate and a preparation method thereof. The artificial aggregate has the following characteristics: 1, the artificial aggregate comprises an inner core part and a shell layer part in component gradient, the inner core comprises the following components in percentage by mass: 10-15% of cement, 55-70% of river sludge, 9-25% of quartz tailings, 6-10% of fly ash and 1-3% of externally doped excitant sodium carbonate, and the shell layer comprises the component of ground steel slag powder; secondly, the quartz tailings, the fly ash and the admixture are directly mixed according to the proportion and then are subject