Cu^(2+)、Zn^(2+)、Cr^(6+)、Cd^(2+)和Pb^(4+)离子在水泥熟料中的固溶特性研究

Incorporation Features of Cu^(2+)、Zn^(2+)、Cr^(6+)、Cd^(2+) and Pb^(4+) Ions in Cement Clinker

通过制备未掺杂重金属以及同时掺杂Cu2+、Zn2+、Cr6+、Cd2+和Pb4+五种重金属离子的水泥熟料,利用化学分析、XRD、岩相分析、电子探针等方法研究了掺杂Cu2+、Zn2+、Cr6+、Cd2+和Pb4+离子对熟料性能的影响以及重金属在熟料矿物中的分布。研究表明:重金属的掺杂可以增加液相含量、改善生料的易烧性;在煅烧后的熟料矿物中,有巨型的阿利特矿物出现,且多被溶蚀;熟料对重金属的固化具有选择性。

Through the preparation of pure cement clinker and cement clinkers doped with Cu^2＋,Zn^2＋,Cr^6＋,Cd^2＋ and Pb^4＋ ions, the effects of Cu^2＋,Zn^2＋,Cr^6＋,Cd^2＋ 和 Pb^4＋ ions on the properties of the clinker and the distributions of the heavy metals in the clinker are researched using the detecting techniques of chemical analysis, XRD, petrographic analysis, EMPA etc. The results showed that doping heavy metals in the clinker may increase quality of intermediate phase, improve the burnability of raw material ;After calcining , there are huge corrosion alite mineral in the clinker. The incorporation of heavy metals to different clinker minerals is of selectivity.