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Inventor:

于岩 (于岩.) [1] (Scholars:于岩) | 许亚丽 (许亚丽.) [2] | 李冲 (李冲.) [3] | 张复伟 (张复伟.) [4]

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incoPat

Abstract:

本发明提供了一种以微纳CeO2粉末为重金属离子固定剂的铅锌尾矿免烧砖的制备方法。原料配比为:铅锌尾矿50~80wt%、水泥8~10wt%、河砂12~42wt%、CeO2 0.5~2wt%、Na2SiO3 4~6.3wt%,铅锌尾矿、水泥和河砂的质量百分数之和为100%。将铅锌尾矿、水泥、河砂、CeO2和Na2SiO3混合均匀,加水后,再湿法混合均匀,自然条件下困料1h,15MPa加压成型,1d后脱模并洒水养护至28d,得到所述的铅锌尾矿免烧砖。本发明制备过程简单,无需高温烧结,成本较低,操作方便。掺入CeO2粉末作为重金属离子的固定剂,其表面缺陷多且比表面积较大,与重金属离子间化学成键,成键强度高,吸附能力强,有效阻止制品中重金属离子的溶出,避免重金属离子释放到环境中,污染周边生态环境。

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Patent Info :

Type: 发明授权

Patent No.: CN201410579846.5

Filing Date: 2014/10/27

Publication Date: 2016/8/24

Pub. No.: CN104402354B

公开国别: CN

Applicants: 福州大学

Legal Status: 授权

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 4

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