The fate of iron in blast furnace slag particles during alkali-activation
The fate of iron in blast furnace slag particles during alkali-activation
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DOI：
10.1016/j.matchemphys.2014.03.017
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发表时间：
2014-07-15
影响因子：
4.6
通讯作者：
Provis, John L.
中科院分区：
文献类型：
--
作者：
Bernal, Susan A.;Rose, Volker;Provis, John L.
同步加速器纳米探针X射线荧光图首次显示高炉矿渣颗粒中存在离散的富铁、富钛和富锰/硅颗粒，并且当矿渣用作碱活化矿渣（AAS）的前体时，这些颗粒保持完整。粘合剂。这些颗粒似乎在炉渣生产过程中被夹带，并在碱活化过程中占主导地位的还原条件下保持稳定。没有证据表明这些颗粒与AAS粘合剂之间存在化学相互作用，AAS粘合剂主要包含硅酸钙水合物。这些结果对于理解AAS中的铁化学以及AAS粘合剂中金属和其他氧化还原敏感物种的潜在反应性是重要的。(C)2014爱思唯尔有限公司版权所有。
Synchrotron nanoprobe X-ray fluorescence maps show for the first time discrete iron-rich, titanium-rich and manganese/silicon-rich particles present in blast furnace slag grains, and these particles remain intact when the slag is used as a precursor for alkali-activated slag (AAS) binders. These particles appear to be entrained during slag production, and remain stable under the reducing conditions prevailing during alkali-activation. There is no evidence of chemical interaction between these particles and the AAS binder, which mainly comprises calcium silicate hydrates. These results are important for the understanding of iron chemistry in AAS, and the potential reactivity of metallic and other redox-sensitive species within AAS binders. (C) 2014 Elsevier B.V. All rights reserved.