微波处理多种固废制备微晶玻璃  

Microwave treatment of various solid wastes to prepare glass-ceramics

作　　者：徐文策 曹钊 马瑞 吴楠楠 欧阳顺利 XU Wence;CAO Zhao;MA Rui;WU Nannan;OUYANG Shunli(Mining Research Institute of Inner Mongolia University of Science and Technology,Baotou 014010,China;School of Material and Metallurgy,Inner Mongolia University of Science&Technology,Baotou 014010,China;Guangzhou Maritime University,Guangzhou 510725,China)

机构地区：[1]内蒙古科技大学矿业与煤炭学院,包头014010 [2]内蒙古科技大学材料与冶金学院,包头014010 [3]广州航海学院,广州510725

出　　处：《环境工程学报》2023年第2期635-643,共9页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(11964025,11564031);内蒙古自治区重大基础研究开放课题资助项目(0406091701);内蒙古自治区自然科学基金资助项目(2018LH02004);内蒙古科技大学创新基金资助项目(2019YQL06)。

摘　　要：以不锈钢渣、铜渣和粉煤灰为原料,通过熔铸法与微波晶化法相结合制备矿渣微晶玻璃,研究铜渣添加量(Fe_(2)O_(3))对矿渣微晶玻璃结晶特性与重金属迁移规律。结果表明,铜渣中的Fe_(2)O_(3)对微晶玻璃结晶具有调控作用,5%的铜渣添加量会促进辉石结晶;当铜渣超过15%导致了磁铁矿的结晶,抑制辉石析晶。不锈钢渣与铜渣中的重金属Zn、Mn、Cr离子在玻璃结晶过程迁移进入尖晶石,尖晶石为辉石提供形核质点,诱导辉石外延尖晶石析晶。在矿渣微晶玻璃中辉石包裹尖晶石形成“核-壳”结构,对重金属离子有效固化。本研究结果可为高值化利用多种固废制备矿渣微晶玻璃及重金属固化研究提供参考。Taking the fly ash and the slag of the stainless steel, the copper slag as raw materials, slag glassceramics was prepared through the combination of the method of casting and microwave heating, and the purpose of the paper was to study on the crystallization characteristics and the migration law for heavy metal existed in glass-ceramics made of slag by the addition of copper slag(Fe_(2)O_(3)). The results showed that Fe_(2)O_(3)in copper slag had a regulatory effect on glass-ceramics crystallization while the addition of 5% copper slag would forward augite crystallization. However, over 15% that would lead to the crystallization of magnetite, and augite crystallization would be inhibited. The heavy metals Zn, Mn and Cr ions in the slag of the stainless steel and the copper slag would be transferred by migration into spinel during the glass crystallization process, while the spinel provides nucleation points for augite, which would induce the crystallization on epitaxial spinel for augite.Thru augite wrapping of the spinel to form a core-shell structure in slag glass-ceramics, it would lead to an effective curing of the heavy metal cation. The results of this study can provide a reference for highly preparing of the slag glass-ceramics and the curing for heavy metal from a variety of solid wastes.

关 键 词：矿渣微晶玻璃 微波处理 辉石 尖晶石 重金属固化 

分 类 号：O794[理学—晶体学]