Kostakis G
Technical University of Crete, Department of Mineral Resources Engineering, GR 73100 Chania, Greece.
J Hazard Mater. 2009 Jul 30;166(2-3):972-7. doi: 10.1016/j.jhazmat.2008.12.007. Epub 2008 Dec 6.
In the present work, mineralogical analysis of fly ashes produced from the brown coal burning power plants of Agios Dimitrios, Kardia, Ptolemais, LIPTOL, Amynteon, and Achlada-Meliti (Western Macedonia, Greece) was performed, with the aim of characterizing the ashes on the basis of their quantitative mineral phase composition and asses their variability at different time periods. The fly ashes from the Agios Dimitrios, Kardia, and Ptolemais power plants were found to have nearly the same mineralogical composition, consisting mainly of feldspars, lime, anhydrite, quartz, calcium silicates, and high amounts of amorphous phases. The fly ashes from Amynteon were slightly different, having lower content of lime and higher content of feldspars, whilst those from LIPTOL had a relative variable quantitative composition. The fly ashes from the Meliti-Achlada power plant consisted mainly of amorphous phases (very high amounts), mullite, feldspars, and quartz. The mineralogical composition of the ashes produced in all the power plants, except from these of LIPTOL, did not fluctuate significantly over time. An assessment of the hydraulic (cementitious) or pozzolanic character of the ashes is proposed, introducing the use of triangle diagrams A-B-C, which represent the total fraction of the phases with hydraulic or pozzolanic (A), inert (B) character, and the amorphous phases (C).
在本研究中，对希腊西马其顿地区阿吉奥斯·季米特里奥斯、卡尔迪亚、托勒迈伊斯、利普托尔、阿米恩泰翁和阿赫拉达 - 梅利蒂的褐煤燃烧发电厂产生的飞灰进行了矿物学分析，目的是根据其定量矿物相组成对飞灰进行表征，并评估它们在不同时间段的变异性。发现阿吉奥斯·季米特里奥斯、卡尔迪亚和托勒迈伊斯发电厂的飞灰具有几乎相同的矿物学组成，主要由长石、石灰、硬石膏、石英、硅酸钙和大量非晶相组成。阿米恩泰翁的飞灰略有不同，石灰含量较低，长石含量较高，而利普托尔的飞灰具有相对可变的定量组成。梅利蒂 - 阿赫拉达发电厂的飞灰主要由非晶相（含量非常高）、莫来石、长石和石英组成。除利普托尔外，所有发电厂产生的飞灰的矿物学组成随时间变化不大。提出了对飞灰的水硬性（胶凝性）或火山灰特性的评估方法，引入使用三角形图A - B - C，该图表示具有水硬性或火山灰性（A）、惰性（B）特性的相的总分数以及非晶相（C）。
