微波作用高岭质固体废弃物热活化机理研究

For changing kaolinitic solid waste to high quality cement additives, and avoidance low efficiency, high energy consumption, again pollution due to use tradition thermal activation, this research project content is that kaolinitic solid waste is activated with microwave irradiation and improves level of solid waste treatment, this research will establish theory foundation of microwave irradiation activation kaolinitic solid waste. Research content as follows:.1. Control model research of activation process and properties. According to theoretical analysis and computer simulation, this research project will study that kaolinitic solid waste may arise various kinds active substances formed process model and properties control model..2. Study on microscopic mechanism of phase transitions. The research projects will study influence factor and regular pattern of microwave irradiation activation kaolinitic solid waste such as mineral composition and microstructure, microwave field distribution, temperature and heating time. Meanwhile, this research project will searches sensitive factors of influence microwave activation, and characters activation effect with microscopic properties..3. Microscopic properties test, activation appraisal, microwave activation model study. By theoretical analysis, test detection and computer simulation, the research projects will make microscopic properties test and micro-structure study to kaolinitic solid waste-composite cement hydrates, at the same time, improve activation process and properties control model. Finally, this research projects will build theoretical model and mechanism of microwave irradiation activation kaolinitic solid waste.

为使高岭质固体废弃物成为优质的水泥辅助性胶凝组份，并避免传统热活化效率低、能耗高和二次污染的弊病,本研究项目旨在利用微波能活化高岭质固体废弃物，提高固体废弃物处理水平，其研究成果将为建立微波活化高岭质固体废弃物理论体系奠定基础，研究内容为1.活化过程及性能控制模式研究:以理论分析和计算机仿真为指导，研究微波活化高岭质固体废弃物可能产生的各种活性物质形成过程模式和性能控制模式；2.相变微观机理研究:探讨矿物组成及显微结构、微波场分布、温度及加热时间等对微波活化高岭质固体废弃物的影响和贡献规律，寻找影响微波活化的敏感因素，研究用宏观性能表征活化效应的方法；3.宏观性能测试、活性评价及微波活化模型研究:对高岭质固体废弃物复合水泥水化物进行宏观性能测试和微结构研究，评价其活性，利用理论分析、试验检测及计算机仿真，修改完善活化过程及性能控制模式，构建微波活化高岭质固体废弃物机理及理论模型。

本课题组经过为期4年的研究，完成了如下研究内容：1、以理论分析和计算机仿真为指导，开展微波热活化煤矸石的试验研究，以及微波热活化煤矸石可能产生的各种活性物质形成过程模式和性能控制模式的建立；2、采用X射线衍射仪（XRD）和扫描电镜（SEM）等技术进行微波激发煤矸石和磷石膏活性的微观结构研究，如晶体结构和玻璃体结构分析、微观结构分析和转晶方法等；阐述了矿物组成及显微结构、微波场分布、温度及加热时间等对微波激发煤矸石和磷石膏的影响和贡献规律；寻找影响煤矸石和磷石膏活化的敏感因素，用宏观性能表征活化效应的方法；3、构建微波活化煤矸石-硅酸盐水泥体系，并对其进行矿物组成和宏观性能（凝结时间和强度等技术指标）测试；利用理论分析、试验观测及计算机仿真相结合的研究方法，修改完善活化过程及性能控制模式，构建微波激发煤矸石和磷石膏活化模型，并通过试验验证所确立的微波活化煤矸石和磷石膏反应机理和理论的正确性及有效性。