Cement clinker doped with industrial waste residues and preparation method of cement clinker: Fid-Bau Portal

Cement clinker doped with industrial waste residues and preparation method of cement clinker

NIU YUNHUI / LU ZHONGYUAN / LI JUN

The invention discloses cement clinker doped with industrial waste residues and a preparation method of the cement clinker, belongs to the technical field of cement materials, and solves the problems in the prior art that heavy metals in cement prepared from lead-zinc tailings as raw materials are easy to seep out to pollute the environment and the setting time is long. The cement clinker comprises the following raw materials: 75-85 parts of a calcium raw material; 10 to 20 parts of construction waste; 1-2 parts of an iron raw material; 1-3 parts of lead-zinc tailings; and 0.5-2 parts of manganese slag. The preparation method comprises the following steps: S1, mixing and grinding the calcium raw material and the construction waste, adding the iron, the lead-zinc tailings and the manganese slag, and mixing and grinding; and S2, calcining the material obtained by mixing and grinding in the step S1 to obtain the cement clinker. According to the invention, various wastes are fully utilized, and reutilization of resources is realized. The cement clinker disclosed by the invention has good burnability, compressive strength and breaking strength, heavy metals are fixed in cement lattices and are not easy to seep, and the retarding effect caused by zinc oxide is solved.

本发明公开了一种掺入工业废渣的水泥熟料及其制备方法，属于水泥材料技术领域，解决了现有技术中以铅锌尾矿为原料制备的水泥重金属易渗出污染环境，凝结时间长的问题。本发明的水泥熟料的原料为：钙质原料75～85份；建筑垃圾10～20份；铁质原料1‑2份；铅锌尾矿1‑3份；锰渣0.5‑2份。本发明的制备方法包括：S1.将钙质原料和建筑垃圾混合研磨后，加入铁质、铅锌尾矿、锰渣混合研磨；S2.将S1混合研磨所得物料进行煅烧得到水泥熟料。本发明充分地利用了各种废弃物，实现了资源的再利用。本发明的水泥熟料具有良好的易烧性能、抗压强度和抗折强度，重金属固定于水泥晶格中，不易渗出，且解决了氧化锌带来的缓凝作用。

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