两种不同焚烧飞灰熔融特性实验研究  

Melting Characteristic and Surface Properties of Two Different Munic ipal Solid Waste Fly Ashes

作　　者：金保升[1] 王学涛[1] 仲兆平[1] 党小剑[1] 

机构地区：[1]东南大学热能工程研究所洁净煤发电及燃烧技术教育部重点实验室,江苏南京210096

出　　处：《锅炉技术》2005年第1期38-42,60,共6页Boiler Technology

基　　金：江苏省建设系统科技发展项目 (JS2 0 0 3 11) ;博士点基金 (2 0 0 3 0 2 860 0 5 )

摘　　要：实验选用了 2种不同地区的垃圾焚烧飞灰进行高温熔融实验 ,对试样FA1和FA2的化学组成、熔融温度、熔融时间及外观形貌等特性进行了测试。 2种飞灰主要成分为 :CaO、SiO2 、Al2 O3 及少量的Na2 O、K2 O、Fe2 O3 、MgO。实验研究结果表明 :2种飞灰试样的熔融温度设定在 1 40 0℃ ,最合适熔融时间为 90min;在 1 40 0℃高温下 ,熔融体表观结构平整光滑 ,有较高的硬度 ,其断面有光泽产生且无明显气孔 ,飞灰试样已达到完全熔融。Two types of MSW incineration fly ashes were melted at high temperature. Two samples of FA1 and FA2 were carried out in terms of chemical composition, me lting temperature, melting time, and morphology. According to the results, the better melting tempe rature was ascertained in 1 400 ℃, the optimum melting time was hold for 90 minutes. In 1 400 ℃ , the results indicated that the main componen ts CaO, SiO 2, and Al 2O 3 of two samples accounted for a large percent, they included a fraction of Na 2O, K 2O, Fe 2O 3, and MgO. It showed that the mo lten sample became full smooth, much hard in surface structure, while the sectio n of the molten sample had lustrous or no apparent aperture. The raw fly ash had completely melted.

关 键 词：飞灰 熔融 熔融时间 熔融温度 

分 类 号：X705[环境科学与工程—环境工程]