岩石矿物学杂志2025，Vol.44Issue(5)：1217-1224,8.DOI:10.20086/j.cnki.yskw.2025.4209
纤维用玄武岩熔融过程中的晶相转变研究
Study on crystal phase transition during the melting process of basalt for fiber
摘要
Abstract
Basalt fiber,a type of high-performance fiber,is produced by drawing from basalt or rocks of similar compositions after high-temperature melting.The homogeneity of the melt during fiber preparation critically deter-mines fiber quality,yet the dynamic phase transition process during basalt melting remains poorly understood.This study investigated the melting behavior of Hainan Island basalt for fiber production through high-temperature melting experiments,combined with X-ray diffraction(XRD),scanning electron microscopy(SEM),and differential scan-ning calorimetry(DSC)analyses.The results showed that under an air atmosphere,the sample lost adsorbed water from room temperature to 113℃,smectite melted at 804～849℃,pseudobrookite,clinopyroxene and plagioclase with low-An melted in large quantities at 1 075～1 193 ℃,and high-An plagioclase and hematite melted at 1 220～1 297℃.The various mineral components melted in order of melting point from low to high,but during the melting process,oxidation reactions occurred to produce hematite and pseudobrookite,causing the complete melting tem-perature of basalt to increase by about 120℃.The grain size of hematite increased significantly with increasing tem-perature,which was attributed to crystal regrowth at high temperatures.This study provides a theoretical basis for optimizing the melting process of basalt for fibers.关键词
熔融/晶相转变/玄武岩/玄武岩纤维/赤铁矿Key words
melting/crystal phase transition/basalt/basalt fiber/hematite分类
天文与地球科学引用本文复制引用
李珎,徐冠立,何政伟,史凯文,刘怀铭..纤维用玄武岩熔融过程中的晶相转变研究[J].岩石矿物学杂志,2025,44(5):1217-1224,8.基金项目
四川省自然科学基金项目(2023NSFSC0291) （2023NSFSC0291）
海南省地质矿业集团有限公司技术开发(委托)项目(80303-AH20240296) Natural Science Foundation of Sichuan Province(2023NSFSC0291) （委托）
Technology Development(Commissioned)Project of Hainan Geological and Mining Group Company Limited(80303-AH20240296) （Commissioned）
