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本文通过对化学试剂人工合成Fe_2O_3—CaO—SiO_2系及四种进口铁矿石(朝鲜精矿、纽曼山粉矿、哈默斯利粉矿、多西河粉矿)分别研究铁矿石——石灰石系在不同烧结温度(900～1350℃)、不同碱度(石灰石用量10～30%)时,各主要矿物的含量、形态的变化规律及其显微结构特征。并对显微结构与晶体成长条件,以及烧结矿显微结构中,各种晶体的形态差异与发育过程的关系亦作了阐述。用扫描电镜(SEM)及光学显微镜(OM)观察微观结构中矿相转变时的形态特征,比较清晰地说明矿物的形成过程。对我国发展高碱度烧结矿的生产具有一定积极意义。
In this paper, iron ore-limestone was synthesized by artificial synthesis of Fe_2O_3-CaO-SiO_2 and four kinds of imported iron ore (North Korea concentrate, Newman shale ore, Hammersley powder ore and Doxihe powder ore) It is the variation of the content, morphology and microstructure of the main minerals at different sintering temperature (900 ~ 1350 ℃) and different alkalinity (limestone dosage 10 ~ 30%). The relationship between the morphological differences and developmental processes of microstructures and crystal growth conditions, as well as the microstructure of sinter, was also described. Morphology of the microstructure in the microstructure was observed by scanning electron microscopy (SEM) and optical microscope (OM), and the formation process of minerals was clearly demonstrated. It has some positive significance for the development of high basicity sinter in our country.