化工学报2017，Vol.68Issue(5)：1767-1772,6.DOI:10.11949/j.issn.0438-1157.20160778
成纤性粉煤灰的低熔区组成及分布
Compositions and distribution of fly ash in low-melting zone
摘要
Abstract
The melting temperature distribution of fly ash used to prepare fiber is a key to the composition ratio for reducing the melting temperature. Using X-ray fluorescence spectrometry and ash fusion point determination meter, the compositions and fusion temperature of five kinds of fly ash samples were measured. Ternary phase diagram with Al2O3+SiO2, CaO+MgO, Fe2O3+TiO2 for three-phase coordinate was obtained based on the experimental results in the present study and the data of compositions and melting temperature of 117 fly ash samples in literature. Meanwhile, the fly ash melting temperature profile was derived from the zoning method according to different melting temperature. With the effort of distinguishing the compositions of fly ash in low-melting zone, the regularities of its compositions and melting temperature have been established. It has been proved that the compositions and distribution of fly ash in the low melting regions (FT<1350℃) are well consistent with the low melting point regions of 1350℃ in CaO-Al2O3-SiO2 ternary phase diagrams where the minor components are converted to the equal charge of main components, leading to a method of reducing the melting temperature of the fly ash with high melting temperature.关键词
粉煤灰/低熔区/三元相图/熔融温度/氧化铝/二氧化硅Key words
fly ash/low-melting zone/ternary phase diagram/melting temperature/alumina/silica分类
通用工业技术引用本文复制引用
吴萍萍,张泽武,陈建定..成纤性粉煤灰的低熔区组成及分布[J].化工学报,2017,68(5):1767-1772,6.基金项目
国家自然科学基金项目 (21476083).Foundation item: supported by the National Natural Science Foundation of China (21476083). （21476083）
