电厂粉煤灰合成低成本高性能复相陶瓷与耐火材料的研究  

Study on Synthesis of Low Cost and High Performance Multiphase Ceramics & Refractory Using Fly -Ash from Dynamoelectric Factory

作　　者：徐利华[1] 连芳[1] 张微[1] 秦龙[1] 徐斌[1] 夏雯[1] 

机构地区：[1]北京科技大学无机非金属材料系,北京100083

出　　处：《现代技术陶瓷》2004年第2期13-15,22,共4页Advanced Ceramics

基　　金：教育部科学技术研究重点项目(03020);国家自然科学基金项目(50332010;50172008);国家"863"计划联合资助项目(2002AA334080)

摘　　要：目前粉煤灰在综合利用的基础上,提出拟利用电厂粉煤灰合成具有高附加值Sialon复相陶瓷/耐火材料新思路。研究结果表明,通过酸洗工艺参数的控制,可实现粉煤灰中杂质铁的去除,有利于合成陶瓷体积密度的改善。采用胶态成型工艺与碳热还原氮化工艺,可实现低成本高性能环境友好材料的研制。Based on the comprehensive utilization of industrial fly - ash at present, the novel route for obtaining high value sialon ceramic composite/refractory using fly - ash from dynamoelectric factory was put forward in the paper. The results indicate that the removal of iron element in fly - ash controlled by acid - wash purifying process was available for improvement in bulk density of as - fabricated ceramics. The low - cost, high - performance and friendly - environmental materials can be attained while both the colloidal process and carbothermal reduction nitridation (CRN) were used.

关 键 词：粉煤灰 复相陶瓷 耐火材料 合成 胶态成型 净化工艺 碳热还原氮化 注浆成型 阿基米德法 

分 类 号：X773[环境科学与工程—环境工程]