利用煤矸石合成Sialon类陶瓷材料的研究进展

Research Progress of the Synthesis of Sialon Ceramic Materials by Coal Gangue

围绕煤矸石在Sialon类陶瓷材料领域的应用和研究现状,以煤炭企业废弃煤矸石的循环利用为基本出发点,介绍了Sialon类陶瓷材料的不同合成方法。概述了煤矸石的分类、化学组成及分析了合成Sialon类材料的物质条件基础,可以充分利用煤矸石中Al2O3、Si O2两种主要成分合成Sialon类陶瓷。阐述了利用煤矸石合成Sialon类陶瓷材料及其Sialon复相材料的研究成果和进展,分析了各种煤矸石制取Sialon材料方法的优缺点。列举出几种煤矸石制取Sialon的前处理方法,对煤矸石制备Sialon类陶瓷材料的技术进展作了阐述,简介了今后的发展方向。总结了碳热还原氮化、燃烧合成法存在的技术优点和缺陷。在煤矸石改性研究,制备Sialon类陶瓷的基础上,指出已经实现产业化的方法存在的问题,对未来的研究方向和重点,提出建议和需克服合成技术中的一些问题。

Around the investigative progress of coal gangue used as Sialon ceramic materials, the different synthesis methods of Sialon ceramic materials have been introduced with the starting point of coal gangue waste recycling in the coal enterprises. There is a summary about the classification and chemical composition of coal gangue as well as the material condition of coal gangue to make Sialon ceramics. Some Sialon ceramic materials can be synthesized by full using of the A1203 and SiO2. The investigative progress of coal gangue used in synthesizing Sialon materials or Sialon multiphase materials by different synthesis methods are expatiated, and analyze these advantages and disad- vantages. Several pretreatment methods of coal gangue for Sialon are listed. The technical progress of the preparation of Sialon ceramic materials by coal gangue is described, and the future development direction has been introduced. The advantages and defects of carbon thermal reduction nitriding and combustion synthesis technology are summa- rized. On the basis of study on modification of coal gangue and preparation of Siaton ceramics, point out problems existing in the process of industrialization. The future research direction and focus as well as suggestions existing in the synthesis technology which are necessary to overcome have been put forward.